WO2017092639A1 - 一种在密集小基站部署场景下的寻呼方法、装置及系统 - Google Patents

一种在密集小基站部署场景下的寻呼方法、装置及系统 Download PDF

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Publication number
WO2017092639A1
WO2017092639A1 PCT/CN2016/107548 CN2016107548W WO2017092639A1 WO 2017092639 A1 WO2017092639 A1 WO 2017092639A1 CN 2016107548 W CN2016107548 W CN 2016107548W WO 2017092639 A1 WO2017092639 A1 WO 2017092639A1
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base station
small base
type
cell reselection
reselection threshold
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PCT/CN2016/107548
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English (en)
French (fr)
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王建中
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深圳市金立通信设备有限公司
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Publication of WO2017092639A1 publication Critical patent/WO2017092639A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a paging method, apparatus, and system for a dense small base station deployment scenario.
  • the core network follows the traditional paging mechanism when treating the small base station, that is, the core network uses the Mobility Management Entity (MME) to base stations in all jurisdictions (ie, all cells), including the macro base station. And small base stations, sending paging signaling. All the base stations that receive the paging signaling sent by the MME, including the macro base station and the small base station, broadcast the paging signaling to the user equipment (User Equipment, UE) in the coverage area.
  • MME Mobility Management Entity
  • UE User Equipment
  • the embodiment of the invention provides a paging method and a device in a dense small base station deployment scenario, which can prevent the MME from sending paging signaling to all the densely deployed small base stations, thereby reducing system resource waste.
  • the first aspect of the embodiments of the present invention provides a paging method in a scenario of a dense small base station deployment, which may include:
  • the mobility management entity MME determines, according to the signaling sent by the macro base station, the first type of small base station and the second type of small base station that are connected to the macro base station;
  • the MME determines, according to the first cell reselection threshold corresponding to the first type of small base station and the second cell reselection threshold corresponding to the second type of small base station, a target small cell corresponding to the target cell reselection threshold, where the first cell reselection threshold and the second cell reselection threshold are different;
  • the MME sends paging signaling to the macro base station and the target small base station to trigger the macro base station and the target small base station to broadcast paging signaling to user equipment UEs in respective coverage areas.
  • a second aspect of the embodiments of the present invention provides a paging method in a scenario of a dense small base station deployment, which may include:
  • the macro base station receives signaling sent by each small base station included in its coverage area
  • the macro base station determines, according to the identifier information carried in the signaling sent by each of the small base stations, the type of the small base station, where the small base station includes a small base station of a first type and a small base station of a second type;
  • the macro base station sends signaling to the mobility management entity MME, where the signaling carries the first cell reselection threshold corresponding to the first type of small base station and the second cell corresponding to the second type of small base station Selecting a threshold to trigger the MME to send paging signaling to a target small base station corresponding to a target cell reselection threshold included in each of the small base stations when receiving the paging request, where the first cell reselection threshold Not the same as the second cell reselection threshold;
  • the macro base station When receiving the paging signaling sent by the MME, the macro base station broadcasts the paging signaling to the user equipment UE of its coverage area.
  • a third aspect of the embodiments of the present invention provides a paging method in a scenario of a dense small base station deployment, which may include:
  • the user equipment UE receives the signaling sent by the macro base station, and determines, according to the signaling, a first type of small base station and a second type of small base station that are connected to the macro base station, and a corresponding one of the first type of small base stations. a cell reselection threshold and a second cell reselection threshold corresponding to the second type of small base station, where the first cell reselection threshold and the second cell reselection threshold are different;
  • the cell reselection threshold used for cell reselection is set to the first cell reselection threshold corresponding to the first type of small base station according to the type of the small base station to which the UE belongs. Or a second cell reselection threshold corresponding to the second type of small base station;
  • the UE performs cell reselection and camping according to the first cell reselection threshold or the second cell reselection threshold.
  • a fourth aspect of the embodiments of the present invention provides a paging apparatus in a scenario of a dense small base station deployment, which may include:
  • a determining unit configured to determine, according to signaling sent by the macro base station, a first type of small base station and a second type of small base station connected to the macro base station;
  • the determining unit is further configured to: according to the first cell reselection threshold corresponding to the first type of small base station and the second cell reselection threshold corresponding to the second type of small base station, when receiving the paging request Determining, by the target cell reselection threshold, the target small cell, wherein the first cell reselection threshold and the second cell reselection threshold are different;
  • a paging unit configured to send paging signaling to the macro base station and the target small base station, to trigger the macro base station and the target small base station to broadcast paging signaling to user equipment UEs in respective coverage areas.
  • a fifth aspect of the embodiments of the present invention provides a paging apparatus in a scenario of a dense small base station deployment, which may include:
  • a receiving unit configured to receive signaling sent by each small base station included in a coverage area of the macro base station
  • a determining unit configured to determine, according to the identifier information carried in the signaling sent by each of the small base stations, the type of the small base station, where the small base station includes a first type of small base station and a second Type of small base station;
  • a sending unit configured to send signaling to the mobility management entity MME, where the signaling carries a first cell reselection threshold corresponding to the first type of small base station and a second cell corresponding to the second type of small base station Reselecting a threshold to trigger the MME to send paging signaling to a target small base station corresponding to a target cell reselection threshold included in each of the small base stations when receiving a paging request, where the first cell is reselected
  • the threshold and the second cell reselection threshold are not the same;
  • a broadcast unit configured to: when receiving the paging signaling sent by the MME, broadcast the paging signaling to a user equipment UE in a coverage area of the macro base station.
  • a sixth aspect of the embodiments of the present invention provides a paging apparatus in a scenario of a dense small base station deployment, which may include:
  • a receiving unit configured to receive signaling sent by the macro base station
  • a determining unit configured to determine, according to the signaling received by the receiving unit, a connection with the macro base station a first type of small base station and a second type of small base station, and a first cell reselection threshold corresponding to the first type of small base station and a second cell reselection threshold corresponding to the second type of small base station, where The first cell reselection threshold and the second cell reselection threshold are different;
  • a setting unit configured to set, when the UE performs cell reselection, a cell reselection threshold used by the UE to perform cell reselection according to a type of the small base station to which the UE belongs, to be corresponding to the first type of small base station a first cell reselection threshold or a second cell reselection threshold corresponding to the second type of small base station;
  • a processing unit configured to perform cell reselection and camping according to the first cell reselection threshold or the second cell reselection threshold set by the setting unit.
  • a seventh aspect of the embodiments of the present invention provides a paging system in a scenario of a dense small base station deployment, which may include: the apparatus provided in the foregoing fourth aspect, the apparatus provided in the fifth aspect, and the apparatus provided in the sixth aspect.
  • the MME may determine the type of each small base station connected to the macro base station according to the signaling sent by the macro base station, and may, according to the cell reselection corresponding to each type of small base station, when the MME receives the paging request.
  • the threshold determines a target small base station corresponding to the target cell reselection threshold, and sends paging signaling to the target base station of the macro base station and the plurality of small base stations connected to the macro base station, and selectively sends the paging to the small base station in the TA.
  • the signaling can prevent the MME from sending paging signaling to all the small base stations that are densely deployed, reducing the number of paging signaling sent by the MME to the base stations in the TA, and reducing system resource waste.
  • FIG. 1 is a schematic diagram of a paging mode of a prior art in a dense small base station deployment scenario
  • FIG. 2 is a schematic flowchart of a first embodiment of a paging method in a scenario of a dense small base station deployment according to an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of an MME transmitting paging signaling to a macro base station and a blind spot coverage small base station;
  • FIG. 4 is a schematic flowchart diagram of a second embodiment of a paging method in a scenario of a dense small base station deployment according to an embodiment of the present disclosure
  • FIG. 5 is a schematic flowchart diagram of a third embodiment of a paging method in a scenario of a dense small base station deployment according to an embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram of an embodiment of a paging apparatus in a scenario of a dense small base station deployment according to an embodiment of the present disclosure
  • FIG. 7 is another schematic structural diagram of an embodiment of a paging apparatus in a scenario of a dense small base station deployment according to an embodiment of the present disclosure
  • FIG. 8 is another schematic structural diagram of an embodiment of a paging apparatus in a scenario of a dense small base station deployment according to an embodiment of the present disclosure
  • FIG. 9 is a schematic structural diagram of another embodiment of a paging apparatus in a scenario of a dense small base station deployment according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of another embodiment of a paging apparatus in a scenario of a dense small base station deployment according to an embodiment of the present disclosure
  • FIG. 11 is a schematic structural diagram of an embodiment of an MME according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of an embodiment of a macro base station according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of an embodiment of a UE according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of an embodiment of a paging system in a scenario of a dense small base station deployment according to an embodiment of the present invention.
  • FIG. 1 it is a schematic diagram of a paging mode in the prior art deployment scenario of a dense small base station.
  • LTE Long Term Evolution
  • the paging function in the Long Term Evolution (LTE) system can notify the UE in the IDLE Mode (or idle state) to establish a connection with the network, so that the UE is in Connected Mode (or connected state). ).
  • the MME of the LTE core network needs to send paging (Paging) signaling to all base stations (including macro base stations and small base stations) in the Tracking Area (TA) where the UE is located, and the above macro base station or The small base station broadcasts the paging signaling through air interface Radio Resource Control (RRC) signaling to find the UE in idle mode.
  • RRC Radio Resource Control
  • a large number of small base stations will be deployed in a TA where the UE is located. If the existing paging mode is used, the MME needs to provide all base stations (including macro base stations and small base stations) in the TA where the UE is located. Sending paging signaling, which imposes a huge signaling burden on the core network (Signaling Overhead). In addition, after receiving the paging signaling broadcast by the MME, the large number of small base stations need to broadcast the paging signaling to the UE in the cell covered by the MME, thereby causing a huge air interface letter to the access network. Make a burden.
  • the UE in idle mode needs to select a suitable base station to perform camping and perform cell reselection.
  • the cell selection and reselection rules of the UE in the idle mode specified in the 3GPP standardization protocol are:
  • the UE needs to meet the S criterion when performing cell selection, that is, Srxlev>0and Squal>0, where
  • Srxlev is a cell selection reception level value
  • Squal is a cell selection quantity value
  • Qrxlevmeas is a measurement cell reception level value
  • Qrxlevmin is a minimum required reception level value
  • Qrxlevminoffset is a minimum required reception level value offset value
  • Qqualmeas is a measurement cell number.
  • Qqualmin is the minimum required quantity value
  • Qqualminoffset is the minimum required quantity value offset value.
  • the above variables such as Srxlev, Squal, Qrxlevmeas, Qrxlevmin, Qrxlevminoffset, Qqualmeas, Qqualmin, and Qqualminoffset are all variables defined in the 3GPP standardization protocol. For details, refer to 3GPP TS 36.304, and details are not described herein.
  • the signal quality of the neighboring cell needs to be higher than the threshold Thresh X-low for the neighboring cell with lower priority, and the signal quality of the current serving cell is lower than the threshold Thresh Serving-Low . And continue Treselection for a long time. For a neighboring cell with a high priority, as long as the signal quality of the neighboring cell is higher than the threshold Thresh X-High , and the Treselection is long.
  • the variables such as the above-mentioned Thresh X-low , Thresh Serving-Low , Thresh X-High, and Treselection are variables defined in the 3GPP standardization protocol.
  • Thresh X-low the value range of Thresh X-low , Thresh Serving-Low, and Thresh X-high can be (0 to 31)*2 dB, and the range of Treselection can be (0 to 31) seconds, which can be determined according to the application scenario. There is no limit here.
  • a paging method and apparatus in a dense small base station deployment scenario according to an embodiment of the present invention will be specifically described below with reference to FIG. 2 to FIG.
  • FIG. 2 is a schematic flowchart diagram of a first embodiment of a paging method in a scenario of a dense small base station deployment according to an embodiment of the present invention.
  • the method described in the embodiments of the present invention includes the following steps:
  • the mobility management entity MME determines, according to signaling sent by the macro base station, a first type of small base station and a second type of small base station that are connected to the macro base station.
  • the small base station in the dense small base station deployment scenario may be connected to the macro base station, and then the macro base station may be sent to the macro base station through the X2 interface connected to the macro base station to inform the macro base station of its type.
  • a small base station including a small base station 1, a small base station 2, and a small base station 3 may be included, and the small base station 1 (or the small base station 2, or the small base station 3) may be sent through an X2 interface connected to the macro base station.
  • the information is given to the macro base station to which it belongs, and the macro base station is informed of the type of the small base station 1 (or the small base station 2, or the small base station 3).
  • the macro base station may send a signaling to the MME connected thereto through the S1 interface, and notify the MME of the type of each small base station connected to the macro base station.
  • the signaling sent by the macro base station carries the identification information of the type of each small base station, that is, the type of the small base station is preset by the operator, and is marked by the corresponding identification information.
  • the MME may parse the signaling, and determine the type of each small base station connected to the macro base station according to the identifier information of the type of the small base station carried in the signaling.
  • the small base station connected to the macro base station includes multiple types (including at least two types of the first type and the second type) of small base stations.
  • the macro base station may send signaling to the MME through the S1 interface, and notify the MME of the types of the small base station 1, the small base station 2, and the small base station 3 connected thereto through the foregoing signaling.
  • the MME may parse the signaling to determine that the macro base station is connected.
  • the type of the small base station may include: a first type of small base station and a second type of small base station, etc., wherein the first type of small base station may be a hotspot coverage small base station, and the second type
  • the small base station can cover the small base station for the blind spot.
  • the small base station can inform the macro base station that is connected to it by the X2 interface whether the type is hotspot or blind, to trigger the macro base station to inform the MME of the type of the small base station, or notify the small UE of the coverage cell corresponding to the small base station by the macro base station.
  • the type of base station is a first type of small base station and a second type of small base station, etc., wherein the first type of small base station may be a hotspot coverage small base station, and the second type
  • the small base station can cover the small base station for the blind spot.
  • the small base station can inform the macro base station that is connected to it by the X2 interface whether the type is hotspot or blind, to
  • the small base station 1, the small base station 2, and the small base station 3 may include hotspot coverage small base stations (assumed to be small base station 1 and small base station 3) and blind spot coverage small base stations (assumed to be small base stations 2).
  • the macro base station may broadcast the types of the respective small base stations to the UEs in the coverage cells corresponding to the respective small base stations.
  • the MME may parse the signaling sent by the macro base station, and acquire the types of the small base stations connected to the macro base station carried in the signaling sent by the macro base station.
  • the identification information may further determine a first type of small base station and a second type of small base station connected to the macro base station according to the foregoing identification information.
  • the small base station of the first type may be a small base station for a hotspot
  • the small base station of the second type may be a small base station for a blind spot.
  • the MME may determine, according to the related information of the small base station carried in the signaling, the small base station connected to the macro base station, where the small base station is At least two types of small base stations, such as a second type of small base station and a second type of small base station, may be included.
  • the MME may determine the type of each small base station according to information such as the traffic volume or load of each small base station, and further set a cell reselection threshold for each small base station according to the type of each small base station.
  • the MME may set the cell reselection threshold corresponding to the first type of small base station to be the first cell reselection threshold, and the cell reselection threshold corresponding to the second type of small base station is the second cell reselection threshold, the second The cell reselection threshold is less than the first cell reselection threshold.
  • the MME When the MME receives the paging request, the MME is configured according to the first cell reselection threshold corresponding to the first type of small base station and the second cell reselection threshold corresponding to the second type of small base station. And determining a target small base station corresponding to the target cell reselection threshold.
  • the MME may be configured according to each small base station connected by the macro base station.
  • the type, the small base station (ie, the target small base station) of the target type is determined.
  • the MME may perform signaling on the macro base station. The first cell reselection threshold corresponding to the first type of small base station and the second cell reselection threshold corresponding to the second type of small base station are obtained from the signaling sent by the macro base station.
  • the MME may also set different cell reselection thresholds for different types of small base stations according to the information of the small base station, such as the traffic volume or the load, and the like, to set the different cell reselection thresholds according to the set cells.
  • the reselection threshold updates the cell reselection threshold corresponding to each type of small base station carried in the macro base station signaling.
  • the MME may determine which small base stations send paging signaling according to cell reselection thresholds of different types of small base stations.
  • the MME may search for the small base station corresponding to the target cell reselection threshold from each of the small base stations according to the cell reselection threshold corresponding to each small base station, and determine the target base station as the target small base station to send the paging message to the target small base station. make. For example, the MME searches for the small base station corresponding to the second cell reselection threshold (that is, the target cell reselection threshold is the second cell reselection threshold), that is, the blind spot coverage small base station, and the target cell reselection threshold is corresponding.
  • the blind spot coverage small base station is determined as the target small base station.
  • the MME may find the target small base station of the type of blind spot coverage as the small base station 2 from the small base station 1, the small base station 2, and the small base station 3.
  • the MME sends paging signaling to the macro base station and the target small base station.
  • the MME may send paging signaling to the macro base station and the target small base station to trigger the macro base.
  • the station and the target small base station broadcast paging signaling to UEs in respective coverage areas.
  • FIG. 3 is a schematic diagram of the MME transmitting paging signaling to the macro base station and the blind spot coverage small base station.
  • the UE#1 is the UE described in the embodiment of the present invention
  • the small base station #1 is the small base station 1 described in the embodiment of the present invention
  • the small base station #2 is the small one described in the embodiment of the present invention
  • the base station 2 and the small base station #3 are the small base stations 3 described in the embodiments of the present invention, and are not limited herein.
  • the MME may determine the type of each small base station connected to the macro base station according to the signaling sent by the macro base station, and may, according to the cell reselection corresponding to each type of small base station, when the MME receives the paging request.
  • the threshold determines a target small base station corresponding to the target cell reselection threshold, and sends paging signaling to the target base station of the macro base station and the plurality of small base stations connected to the macro base station, selectively to the TA
  • the small base station sends the paging signaling to prevent the MME from sending paging signaling to all the densely deployed small base stations, reducing the number of paging signaling sent by the MME to the base station in the TA, and reducing system resource waste.
  • FIG. 4 is a schematic flowchart diagram of a second embodiment of a paging method in a scenario of a dense small base station deployment according to an embodiment of the present invention.
  • the method described in the embodiments of the present invention includes the following steps:
  • the macro base station receives signaling sent by each small base station included in the coverage area.
  • the small base station in the dense small base station deployment scenario may be connected to the macro base station, and then the macro base station may be sent to the macro base station through the X2 interface connected to the macro base station to inform the macro base station of its type.
  • a small base station including a small base station 1, a small base station 2, and a small base station 3 may be included, and the small base station 1 (or the small base station 2, or the small base station 3) may be sent through an X2 interface connected to the macro base station.
  • the information is given to the macro base station to which it belongs, and the macro base station is informed of the type of the small base station 1 (or the small base station 2, or the small base station 3).
  • the macro base station can receive the signaling sent by each small base station included in the coverage area through the X2 interface, and further determine the type of each small base station according to the foregoing signaling.
  • the macro base station determines, according to the identifier information carried in the signaling sent by each of the small base stations, the type of each of the small base stations.
  • the macro base station may parse the signaling sent by each small base station, according to the signaling carried in each small base station.
  • the identification information determines the type of each small base station.
  • the type of the small base station may include: a first type and a second type, where the small base station of the first type covers the small base station as a hot spot, and the small base station of the second type covers the small base station as a blind spot.
  • the small base station 1, the small base station 2, and the small base station 3 may include a hotspot coverage small base station (assumed to be a small base station 1 and a small base station 3) and a blind spot coverage small base station (assumed to be a small base station 2), and the small base station 1 and the small base station 2 and the type of the small base station 3 are merely examples, and are not exhaustive, and are not limited herein.
  • the macro base station sends signaling to the mobility management entity MME.
  • the macro base station receives the signaling sent by the small base station that obtains its coverage area, and after determining the type of each small base station, may send signaling to the MME through the S1 interface, and the types of the foregoing small base stations and The corresponding cell reselection threshold is sent to the MME by using the foregoing signaling.
  • the macro base station may carry the first cell reselection threshold corresponding to the first type of the small base station and the second cell reselection threshold corresponding to the second type of the small base station in the foregoing small base station, and send the foregoing
  • the MME is provided for the MME to selectively send paging signaling to each small base station.
  • the first cell reselection threshold is different from the second cell reselection threshold, and specifically, the second cell reselection threshold is smaller than the first cell reselection threshold.
  • the macro base station When receiving the paging signaling sent by the MME, the macro base station broadcasts the paging signaling to a UE in its coverage area.
  • the MME after the macro base station informs the MME of the type of the small base station in its coverage area, the MME sends a page to the macro base station and the designated type of small base station when the MME receives the paging request. Signaling. After receiving the paging signaling sent by the MME, the macro base station may broadcast the paging signaling to the UE in its coverage area.
  • the macro base station may further notify the cell corresponding to each type of the small base station of the UE included in the coverage area by using the broadcast information.
  • the threshold is selected to trigger the UE included in the coverage area of each small base station to perform cell reselection according to the cell reselection threshold.
  • the cell reselection threshold corresponding to the type of the small cell that is covered by the hotspot is Thresh x-low_pico_boost
  • the cell reselection threshold of the small cell with the blind spot coverage is Thresh x-low_pico_dc
  • the Thresh x- Low_pico_dc is less than the default cell reselection threshold Thresh x-low defined in the 3GPP standardization protocol
  • Thresh x-low is less than Thresh x-low_pico_boost .
  • the cell reselection threshold may be set to perform the cell reselection to select the corresponding cell camping. Specifically, it is assumed that, at time T1, the UE detects that it is in the coverage area of the macro base station, and there is no small base station around, the UE may reselect the cell Threshold x for cell reselection when performing cell reselection. -low is set to cover the corresponding cell reselection threshold Thresh x-low , that is, the default cell reselection threshold Thresh x-low .
  • the UE may use the cell threshold Thresh x- for cell reselection when performing cell reselection.
  • Low is set to cover the cell reselection threshold Thresh x-low_pico_boost corresponding to the small base station. Since the value of Thresh x-low_pico_boost is large, the link signal strength between the UE and the hotspot coverage small base station cannot be higher than Thresh x-low_pico_boost .
  • the UE will continue to select the currently served macro base.
  • the station is camping. It is assumed that, at time T3, the UE detects that it is in the coverage area of the small base station 2, and the small base station 2 covers the small base station as a blind spot, the UE may use the cell threshold Thresh x- for cell reselection when performing cell reselection. Low is set to cover the cell reselection threshold Thresh x-low_pico_dc corresponding to the small base station.
  • Thresh x-low_pico_dc Since the value of Thresh x-low_pico_dc is small, the link signal strength between the UE and the blind spot coverage small base station is easily higher than Thresh x-low_pico_dc . Therefore, according to the cell reselection criterion described above, the UE will quickly select the blind spot coverage small base station. Resident. It can be ensured that the hotspot coverage small base station is not selected for camping when performing cell reselection, but the macro point base station of the small base station or the neighboring cell is selected to camp on the blind spot, thereby reducing the number of objects that the MME sends paging signaling.
  • the MME sends the paging signaling only to the macro base station and the blind spot coverage small base station, and the hotspot coverage small base station does not send the paging signaling, thereby reducing the signaling burden brought by the MME to send the paging signaling to the core network and the access network.
  • the macro base station receives the signaling sent by each small base station in its coverage area, and after determining the type of each small base station, can notify the MME of the type of each small base station.
  • the MME may determine, according to the signaling sent by the macro base station, the type of each small base station connected to the macro base station, and further, when the MME receives the paging request, to the target small base station among the macro base station and the plurality of small base stations connected to the macro base station.
  • Sending paging signaling can prevent the MME from sending paging signaling to all the densely deployed small base stations, and reducing the MME sending paging signaling to the base station in the TA The amount of resources that reduce the system's waste.
  • the cell reselection threshold may be configured for different types of small base stations, and the cell reselection threshold of each type of small base station is broadcasted to the UE, and the UE is triggered to perform cell weight.
  • FIG. 5 is a schematic flowchart diagram of a third embodiment of a paging method in a scenario of a dense small base station deployment according to an embodiment of the present invention.
  • the method described in the embodiments of the present invention includes the following steps:
  • the user equipment UE receives the signaling sent by the macro base station, and determines, according to the signaling, a first type of small base station and a second type of small base station that are connected to the macro base station, and the first type of small base station.
  • the first cell reselection threshold and the second cell reselection threshold corresponding to the second type of small base station.
  • a cell reselection threshold used for performing cell reselection to a first cell weight corresponding to the first type of small base station according to the type of the small base station to which the UE belongs. Selecting a threshold or a second cell reselection threshold corresponding to the second type of small base station.
  • the UE performs cell reselection and camping according to the first cell reselection threshold or the second cell reselection threshold.
  • the first type of small base station is: a hotspot covers a small base station, and the second type of small base station is a blind spot coverage small base station;
  • the first cell reselection threshold is different from the second cell reselection threshold, and the second cell reselection threshold is smaller than the first cell reselection threshold.
  • the specific implementation process of the cell reselecting the threshold according to the type of the small cell that is broadcast by the macro base station, and performing the cell reselection and the camping according to the newly set cell reselection threshold may be referred to the foregoing first embodiment.
  • the implementations described in the respective steps in the second embodiment are not described herein again.
  • the UE may determine the type of each small base station and the cell reselection threshold of different types of small base stations according to the signaling sent by the macro base station, and may perform heavy cell reselection according to the type of the small base station.
  • the cell reselection threshold is set, and the blind spot coverage small base station or the neighbor cell macro base station is further selected for camping, which can reduce the receiving object of the paging signal sent by the MME, and reduce the MME to send paging signaling to the core network and connect.
  • FIG. 6 is a schematic structural diagram of an embodiment of a paging apparatus in a scenario of a dense small base station deployment according to an embodiment of the present invention.
  • the apparatus described in the embodiments of the present invention includes: a determining unit 10 and a paging unit 12.
  • the paging apparatus described in the embodiment of the present invention may specifically be a function module included in the MME or the MME, which is described in the embodiment of the present invention. It may include modules such as determining unit 10 and paging unit 11.
  • the implementation manner of each module included in the MME will be described below in combination with the implementation manner described in the foregoing steps in the first embodiment of the paging method in the dense small base station deployment scenario:
  • the determining unit 10 is configured to determine, according to signaling sent by the macro base station, a first type of small base station and a second type of small base station that are connected to the macro base station.
  • the determining unit 10 is specifically configured to:
  • the small base station includes a first type of small base station and a second type of small base station;
  • the small base station of the first type covers the small base station as a hotspot, and the small base station of the second type covers the small base station as a blind spot.
  • the small base station in the dense small base station deployment scenario may be connected to the macro base station, and then the macro base station may be sent to the macro base station through the X2 interface connected to the macro base station to inform the macro base station of its type.
  • a small base station including a small base station 1, a small base station 2, and a small base station 3 may be included, and the small base station 1 (or the small base station 2, or the small base station 3) may be sent through an X2 interface connected to the macro base station.
  • the information is given to the macro base station to which it belongs, and the macro base station is informed of the type of the small base station 1 (or the small base station 2, or the small base station 3).
  • the macro base station may send a signaling to the MME connected thereto through the S1 interface, and notify the MME of the type of each small base station connected to the macro base station.
  • the signaling sent by the macro base station carries the identification information of the type of each small base station, that is, the type of the small base station is preset by the operator, and is marked by the corresponding identification information.
  • the determining unit 10 of the MME may parse the signaling, and determine the type of each small base station connected to the macro base station according to the identification information of the type of the small base station carried in the signaling.
  • the small base station connected to the macro base station includes multiple types (including at least two types of the first type and the second type) of small base stations.
  • the macro base station may send signaling to the MME through the S1 interface, and notify the MME of the types of the small base station 1, the small base station 2, and the small base station 3 connected thereto through the foregoing signaling.
  • the determining unit 10 receives the signaling sent by the macro base station, the signaling may be analyzed to determine the types of the small base station 1, the small base station 2, and the small base station 3 connected to the macro base station.
  • the type of the small base station may include: a first type of small base station and a second type of small base station, etc., wherein the first type of small base station may be a hotspot coverage small base station, and the second type
  • the small base station can cover the small base station for the blind spot.
  • the small base station can inform the macro base station that is connected to it by the X2 interface whether the type is hotspot or blind, to trigger the macro base station to inform the MME of the type of the small base station, or notify the small UE of the coverage cell corresponding to the small base station by the macro base station.
  • the type of base station is a first type of small base station and a second type of small base station, etc., wherein the first type of small base station may be a hotspot coverage small base station, and the second type
  • the small base station can cover the small base station for the blind spot.
  • the small base station can inform the macro base station that is connected to it by the X2 interface whether the type is hotspot or blind, to
  • the small base station 1, the small base station 2, and the small base station 3 may include hotspot coverage small base stations (assumed to be small base station 1 and small base station 3) and blind spot coverage small base stations (assumed to be small base stations 2).
  • the macro base station may broadcast the types of the respective small base stations to the UEs in the coverage cells corresponding to the respective small base stations.
  • the determining unit 10 may parse the signaling sent by the macro base station, and acquire each small base station connected to the macro base station carried in the signaling sent by the macro base station.
  • the identification information of the type, and further, the first type of small base station and the second type of small base station connected to the macro base station may be determined according to the foregoing identification information.
  • the determining unit 10 is specifically configured to:
  • Determining at least two types of small base stations connected to the macro base station according to the signaling sent by the macro base station, and determining a type of each of the small base stations according to traffic or load of each of the small base stations, the small base station The first type of small base station and the second type of small base station are included;
  • the small base station of the first type covers the small base station as a hotspot, and the small base station of the second type covers the small base station as a blind spot.
  • the apparatus (see FIG. 7) described in the embodiments of the present invention further includes:
  • the setting unit 13 is configured to set a first cell reselection threshold corresponding to the first type of small base station and a second cell reselection threshold corresponding to the second type of small base station.
  • the determining unit 10 may determine, according to the information about the small base station carried in the signaling, the small base station connected to the macro base station, where The small base station may include at least two types of small base stations, such as a second type of small base station and a second type of small base station.
  • the determining unit 10 may determine the type of each small base station according to information such as the traffic volume or the load of each small base station, and may further set a cell reselection threshold for each small base station according to the type of each small base station by the setting unit 13.
  • the setting unit 13 may set the cell reselection threshold corresponding to the first type of small base station to be the first cell reselection threshold, and the cell reselection threshold corresponding to the second type of small base station is the second cell reselection threshold.
  • the second cell reselection threshold is less than the first cell reselection threshold.
  • the determining unit 10 is further configured to: according to the first cell reselection threshold corresponding to the first type of small base station and the second cell reselection corresponding to the second type of small base station, when receiving the paging request And determining, by the threshold, a target small base station corresponding to the target cell reselection threshold, where the first cell reselection threshold and the second cell reselection threshold are different.
  • the apparatus (see FIG. 8) described in the embodiments of the present invention further includes:
  • the obtaining unit 12 is configured to parse the signaling sent by the macro base station, and obtain, from the signaling, a first cell reselection threshold corresponding to the first type of small base station and the second type of small base station Corresponding second cell reselection threshold.
  • the determining unit 10 may parse the signaling sent by the macro base station by using the acquiring unit 12, and obtain the first corresponding to the first type of small base station from the signaling sent by the macro base station.
  • the cell reselection threshold and the second cell reselection threshold corresponding to the second type of small base station.
  • the determining unit 10 can determine which small base stations send paging signaling according to the cell reselection thresholds of different types of small base stations. Specifically, the determining unit 10 may search for the small base station corresponding to the target cell reselection threshold from each of the small base stations according to the cell reselection threshold corresponding to each small base station, and determine the target as a target small base station, to send the target to the target small base station. Call signaling.
  • the determining unit 10 searches for the small base station corresponding to the second cell reselection threshold (that is, the target cell reselection threshold is the second cell reselection threshold) from the foregoing small base stations, that is, the blind spot coverage small base station, and reselects the target cell.
  • the blind spot coverage small base station corresponding to the threshold is determined as the target small base station.
  • the determining unit 10 may find the target small base station of the type of blind spot coverage from the small base station 1, the small base station 2, and the small base station 3 as the small base station 2.
  • the paging unit 11 is configured to send paging signaling to the macro base station and the target small base station, to trigger the macro base station and the target small base station to broadcast paging signaling to user equipment UEs in respective coverage areas.
  • the paging unit 11 may send the paging to the macro base station and the target small base station. Signaling to trigger the macro base station and the target small base station to broadcast paging signaling to UEs in respective coverage areas.
  • the paging unit 11 may be directed to the macro base station and the small base station 2 Broadcast signal signaling, without transmitting paging signaling to the small base station 1 and the small base station 3, selectively transmitting paging signaling to the small base station in the TA, reducing the number of paging signaling that the MME sends to the base station in the TA, Reduce system resource waste, as shown in Figure 3.
  • the MME may determine the type of each small base station connected to the macro base station according to the signaling sent by the macro base station, and may, according to the cell reselection corresponding to each type of small base station, when the MME receives the paging request.
  • the threshold determines a target small base station corresponding to the target cell reselection threshold, and sends paging signaling to the target base station of the macro base station and the plurality of small base stations connected to the macro base station, and selectively sends the paging to the small base station in the TA.
  • the signaling can prevent the MME from sending paging signaling to all the small base stations that are densely deployed, reducing the number of paging signaling sent by the MME to the base stations in the TA, and reducing system resource waste.
  • a paging device in a scenario of dense small base station deployment according to an embodiment of the present invention is provided.
  • the apparatus described in the embodiments of the present invention includes: a receiving unit 20, a determining unit 21, a transmitting unit 22, and a broadcasting unit 23.
  • the paging device described in the embodiment of the present invention may be a certain function module included in the macro base station or the macro base station described in the embodiment of the present invention. Description), which may include modules such as the receiving unit 20, the determining unit 21, the transmitting unit 22, and the broadcasting unit 23.
  • the implementation of each module included in the macro base station will be described below in conjunction with the implementation described in the various steps in the second embodiment of the paging method in the dense small base station deployment scenario.
  • the receiving unit 20 is configured to receive signaling sent by each small base station included in a coverage area of the macro base station.
  • the small base station in the dense small base station deployment scenario may be connected to the macro base station, and then the macro base station may be sent to the macro base station through the X2 interface connected to the macro base station to inform the macro base station of its type.
  • a small base station including a small base station 1, a small base station 2, and a small base station 3 may be included, and the small base station 1 (or the small base station 2, or the small base station 3) may be sent through an X2 interface connected to the macro base station.
  • the information is given to the macro base station to which it belongs, and the macro base station is informed of the type of the small base station 1 (or the small base station 2, or the small base station 3).
  • the receiving unit 20 of the macro base station can receive the signaling sent by each small base station included in its coverage area through the X2 interface, and can further determine the type of each small base station according to the foregoing signaling.
  • a determining unit 21 configured to determine, according to the identifier information carried in the signaling sent by each of the small base stations, the type of the small base station, where the small base station includes the first type of small base station and the first Two types of small base stations.
  • the determining unit 21 may parse the signaling sent by each small base station according to the information sent by each small base station.
  • the identification information carried in the order determines the type of each small base station.
  • the type of the small base station may include: a first type and a second type, where the small base station of the first type covers the small base station as a hot spot, and the small base station of the second type covers the small base station as a blind spot.
  • the small base station 1, the small base station 2, and the small base station 3 may include a hotspot coverage small base station (assumed to be a small base station 1 and a small base station 3) and a blind spot coverage small base station (assumed to be a small base station 2), and the small base station 1 and the small base station 2 and the type of the small base station 3 are merely examples, and are not exhaustive, and are not limited herein.
  • the sending unit 22 is configured to send signaling to the mobility management entity MME, where the signaling carries a first cell reselection threshold corresponding to the first type of small base station and a second cell reselection threshold corresponding to the second type of small base station, to trigger the MME to send each paging message when receiving the paging request
  • the target small base station corresponding to the target cell reselection threshold included in the base station sends paging signaling, where the first cell reselection threshold and the second cell reselection threshold are different.
  • the receiving unit 20 receives the signaling sent by the small base station that obtains its coverage area, and after the determining unit 21 determines the type of each small base station, the sending unit 22 may send signaling to the MME through the S1 interface, The types of the foregoing small base stations and their corresponding cell reselection thresholds are sent to the MME by using the foregoing signaling.
  • the sending unit 22 may carry the first cell reselection threshold corresponding to the first type of small base station and the second cell reselection threshold corresponding to the second type of the small base station in the foregoing small base station, and send the foregoing
  • the MME is provided for the MME to selectively send paging signaling to each small base station.
  • the first cell reselection threshold is different from the second cell reselection threshold, and specifically, the second cell reselection threshold is smaller than the first cell reselection threshold.
  • the broadcast unit 23 is configured to: when receiving the paging signaling sent by the MME, broadcast the paging signaling to the user equipment UE in the coverage area of the macro base station.
  • the foregoing broadcast unit 23 is further configured to:
  • the UE included in the coverage area of the small base station performs cell reselection according to a cell reselection threshold corresponding to the small base station.
  • the sending unit 22 informs the MME of the type of the small base station in the coverage area of the macro base station
  • the MME sends the paging request to the macro base station and the designated type of small base station. Paging signaling.
  • the broadcasting unit 23 may broadcast the paging signaling to the UE in its coverage area.
  • the broadcasting unit 23 may also notify the macro base station of the coverage area included in the coverage area of the UE by using the broadcast information.
  • the cell reselection threshold corresponding to the base station triggers the UE included in the coverage area of each small base station to perform cell reselection according to the cell reselection threshold.
  • the cell reselection threshold corresponding to the type of the small cell that is covered by the hotspot is Thresh x-low_pico_boost
  • the cell reselection threshold of the small cell with the blind spot coverage is Thresh x-low_pico_dc
  • the Thresh x- Low_pico_dc is less than the default cell reselection threshold Thresh x-low defined in the 3GPP standardization protocol
  • Thresh x-low is less than Thresh x-low_pico_boost .
  • the cell reselection threshold may be set to perform the cell reselection to select the corresponding cell camping. Specifically, it is assumed that, at time T1, when the UE detects that it is in the coverage area of the macro base station, and there is no small base station around, the UE may reselect the cell Threshold x for cell reselection when performing cell reselection. -low is set to cover the corresponding cell reselection threshold Thresh x-low , that is, the default cell reselection threshold Thresh x-low .
  • the UE may use the cell threshold Thresh x- for cell reselection when performing cell reselection.
  • Low is set to cover the cell reselection threshold Thresh x-low_pico_boost corresponding to the small base station. Since the value of Thresh x-low_pico_boost is large, the link signal strength between the UE and the hotspot coverage small base station cannot be higher than Thresh x-low_pico_boost .
  • the UE will continue to select the currently served macro base.
  • the station is camping. It is assumed that, at time T3, the UE detects that it is in the coverage area of the small base station 2, and the small base station 2 covers the small base station as a blind spot, the UE may use the cell threshold Thresh x- for cell reselection when performing cell reselection. Low is set to cover the cell reselection threshold Thresh x-low_pico_dc corresponding to the small base station.
  • Thresh x-low_pico_dc Since the value of Thresh x-low_pico_dc is small, the link signal strength between the UE and the blind spot coverage small base station is easily higher than Thresh x-low_pico_dc . Therefore, according to the cell reselection criterion described above, the UE will quickly select the blind spot coverage small base station. Resident.
  • the hotspot coverage small base station is not selected for camping, but the blind spot is used to cover the small base station or the macro base station of the neighboring cell to camp, thereby reducing the number of objects that the MME sends paging signaling, that is, The MME sends the paging signaling only to the macro base station and the blind spot coverage small base station, and the hotspot coverage small base station does not send the paging signaling, and reduces the signaling burden brought by the MME to send the paging signaling to the core network and the access network.
  • the macro base station receives the signaling sent by each small base station in its coverage area, and after determining the type of each small base station, can notify the MME of the type of each small base station.
  • the MME may determine, according to the signaling sent by the macro base station, the type of each small base station connected to the macro base station, and further, when the MME receives the paging request, to the target small base station among the macro base station and the plurality of small base stations connected to the macro base station.
  • Sending paging signaling can prevent the MME from sending paging signaling to all the densely deployed small base stations, and reducing the MME sending paging signaling to the base station in the TA The amount of resources that reduce the system's waste.
  • the macro base station determines the classes of the respective small base stations. After the type, the cell reselection threshold may be configured for different types of small base stations, and the cell reselection threshold of each type of small base station is broadcasted to the UE, which triggers the UE to select more blind spots to cover the small base station or perform cell reselection.
  • the neighboring cell macro base station camps, which can reduce the receiving object of the paging signal sent by the MME, and reduce the signaling burden brought by the MME to send the paging signaling to the core network and the access network.
  • FIG. 10 is a schematic structural diagram of another embodiment of a paging apparatus in a scenario of a dense small base station deployment according to an embodiment of the present invention.
  • the apparatus described in the embodiments of the present invention includes: a receiving unit 30, a determining unit 31, a setting unit 32, and a processing unit 33.
  • the paging device described in the embodiment of the present invention may be a certain function module included in the UE or the UE described in the embodiment of the present invention. It may include modules such as the receiving unit 30, the determining unit 31, the setting unit 32, and the processing unit 33.
  • the implementation manner of each module included in the UE will be described below in combination with the implementation described in each step in the third embodiment of the paging method in the dense small base station deployment scenario.
  • the receiving unit 30 is configured to receive signaling sent by the macro base station.
  • the specific implementation process of the foregoing receiving unit 30 for receiving the signaling sent by the macro base station can be referred to the implementation manners described in the foregoing embodiments, and details are not described herein again.
  • a determining unit 31 configured to determine, according to the signaling received by the receiving unit, a first type of small base station and a second type of small base station connected to the macro base station, and a first corresponding to the first type of small base station a cell reselection threshold and a second cell reselection threshold corresponding to the second type of small base station, where the first cell reselection threshold and the second cell reselection threshold are different.
  • the determining unit 31 may parse the signaling, and determine, according to the information carried in the signaling, each small base station connected to the macro base station.
  • the type includes a small base station of a first type and a small base station of a second type.
  • the small base station of the first type is: the hotspot covers the small base station, and the second type of small base station covers the small base station by the blind spot.
  • the macro base station may notify the cell reselection threshold corresponding to each type of the small base station of the UE included in the coverage area by using the broadcast information, and trigger The UE included in the coverage area of each small base station performs cell reselection according to the above-mentioned cell reselection threshold.
  • the determining unit 31 of the UE may determine, according to the foregoing broadcast information, a first cell reselection threshold corresponding to the first type of small base station and a second cell reselection threshold corresponding to the second type of small base station.
  • the second cell reselection threshold is smaller than the first cell reselection threshold.
  • the cell reselection threshold corresponding to the type of the small cell that is covered by the hotspot is Thresh x-low_pico_boost
  • the cell reselection threshold of the small cell with the blind spot coverage is Thresh x-low_pico_dc
  • the Thresh x- Low_pico_dc is less than the default cell reselection threshold Thresh x-low defined in the 3GPP standardization protocol
  • Thresh x-low is less than Thresh x-low_pico_boost .
  • the specific implementation process of the determining unit 31 for determining the type of the small base station and the corresponding cell reselection threshold according to the signaling sent by the macro base station may be referred to the implementation manners described in the foregoing embodiments, and details are not described herein again. .
  • the setting unit 32 is configured to: when the UE performs cell reselection, set a cell reselection threshold used by the UE to perform cell reselection according to a type of the small base station to which the UE belongs, and set the cell reselection threshold to be used by the first type of small base station.
  • the first cell reselection threshold or the second cell reselection threshold corresponding to the second type of small base station.
  • the processing unit 33 is configured to perform cell reselection and camping according to the first cell reselection threshold or the second cell reselection threshold set by the setting unit.
  • the setting unit 32 may set a cell reselection threshold to select a corresponding cell when the UE performs cell reselection. Resident.
  • the UE may detect a pilot signal of a base station in a region where the UE is located, and acquire pilot signals of each base station that can be received by the UE, including a pilot signal of the macro base station and a pilot signal of the small base station. Further, the UE may select the base station with the strongest pilot signal as the base station to which the UE belongs according to the received strength of the pilot signal of each base station.
  • the area may be a coverage area of multiple base stations, and the UE may receive a pilot signal transmitted by each base station that covers the area, and then determine the pilot signal according to the pilot signal strength.
  • a strong base station which is the base station to which it belongs. If the UE can only detect the pilot signal of the macro base station, it can be determined that there are no small base stations around. If the UE detects the pilot signal of the macro base station and detects the pilot signal of the small base station, the base station to which the pilot station belongs may be determined according to the strength of the detected pilot signal.
  • the UE detects that it is in the coverage area of the macro base station, and there is no small base station in the vicinity, it can be determined that the base station to which the UE belongs is a macro base station, and when the UE performs cell reselection, the setting unit 32 can use
  • the cell reselection threshold Thresh x-low for cell reselection is set to the corresponding cell reselection threshold Thresh x-low , that is, the default cell reselection threshold Thresh x-low .
  • the UE detects that it is in the coverage area of the small base station 1 (ie, the small base station to which the UE belongs is the small base station 1), and the determining unit 31 determines that the small base station 1 is the hotspot coverage small base station according to the broadcast information of the macro base station, and the UE
  • the setting unit 32 may set the cell threshold Thresh x-low used for performing cell reselection as the cell reselection threshold Thresh x-low_pico_boost corresponding to the hot spot coverage small base station.
  • Thresh x-low_pico_boost Since the value of Thresh x-low_pico_boost is large, the link signal strength between the UE and the hotspot coverage small base station cannot be higher than Thresh x-low_pico_boost . Therefore, according to the cell reselection criterion described above, the UE will continue to select the currently served macro base. The station is camping.
  • the UE detects that it is in the coverage area of the small base station 2 (ie, the small base station to which the UE belongs is the small base station 2), and the determining unit 31 determines that the small base station 2 is a blind spot coverage small base station according to the broadcast information of the macro base station, and the UE
  • the setting unit 32 may set the cell threshold Thresh x-low for performing cell reselection as the cell reselection threshold Thresh x-low_pico_dc corresponding to the blind spot coverage small base station.
  • Thresh x-low_pico_dc Since the value of Thresh x-low_pico_dc is small, the link signal strength between the UE and the blind spot coverage small base station is easily higher than Thresh x-low_pico_dc . Therefore, according to the cell reselection criterion described above, the UE will quickly select the blind spot coverage small base station. Resident.
  • the hotspot coverage small base station is not selected for camping, but the blind spot is used to cover the small base station or the macro base station of the neighboring cell to camp, thereby reducing the number of objects that the MME sends paging signaling, that is, The MME sends the paging signaling only to the macro base station and the blind spot coverage small base station, and the hotspot coverage small base station does not send the paging signaling, and reduces the signaling burden brought by the MME to send the paging signaling to the core network and the access network.
  • the processing unit 33 may perform the first cell reselection threshold or the second cell according to the setting unit 32. Reselect the threshold for cell reselection and residency.
  • the specific implementation process of the cell reselecting the threshold according to the type of the small cell that is broadcast by the macro base station, and performing the cell reselection and the camping according to the newly set cell reselection threshold may be referred to the foregoing first embodiment. The implementations described in the respective steps in the second embodiment are not described herein again.
  • the UE may determine the type of each small base station and the cell reselection threshold of different types of small base stations according to the signaling sent by the macro base station, and may perform heavy cell reselection according to the type of the small base station.
  • the cell reselection threshold is set, and the blind spot coverage small base station or the neighbor cell macro base station is further selected for camping, which can reduce the receiving object of the paging signal sent by the MME, and reduce the MME to send paging signaling to the core network and connect.
  • FIG. 11 is a schematic structural diagram of an embodiment of an MME according to an embodiment of the present invention.
  • the MME described in the embodiment includes: at least one input device 1001; at least one output device 1002; at least one processor 1003, such as a CPU; and a memory 1004, the input device 1001, the output device 1002, the processor 1003, and the memory 1004 Connected via bus 1005.
  • the above memory 1004 may be a high speed RAM memory or a non-volatile memory such as a disk memory.
  • the above memory 1004 is configured to store a set of program codes, and the input device 1001, the output device 1002, and the processor 1003 are configured to call the program code stored in the memory 1004, and perform the following operations:
  • the input device 1001 is configured to receive signaling sent by the macro base station.
  • the processor 1003 is configured to determine, according to signaling sent by the macro base station, a first type of small base station and a second type of small base connected to the macro base station.
  • the processor 1003 is further configured to: when the input device 1001 receives the paging request, according to the first cell reselection threshold corresponding to the first type of small base station and the second cell corresponding to the second type of small base station Reselecting a threshold, determining a target small base station corresponding to the target cell reselection threshold, where the first cell reselection threshold and the second cell reselection threshold are different.
  • the output device 1002 is configured to send paging signaling to the macro base station and the target small base station, to trigger the macro base station and the target small base station to broadcast paging signaling to user equipment UEs in respective coverage areas.
  • the processor 1003 is specifically configured to:
  • the small base station includes a first type of small base station and a second type of small base station;
  • the small base station of the first type covers the small base station as a hotspot, and the small base station of the second type covers the small base station as a blind spot.
  • the processor 1003 is further configured to:
  • Parsing the signaling sent by the macro base station and acquiring, from the signaling, a first cell reselection threshold corresponding to the first type of small base station and a second cell corresponding to the second type of small base station Select the threshold.
  • the processor 1003 is specifically configured to:
  • Determining at least two types of small connections to the macro base station according to signaling sent by the macro base station Determining, by the base station, a type of each of the small base stations according to a traffic volume or a load of each of the small base stations, where the small base station includes a first type of small base station and a second type of small base station;
  • the small base station of the first type covers the small base station as a hotspot, and the small base station of the second type covers the small base station as a blind spot.
  • the processor 1003 is further configured to:
  • the first cell reselection threshold and the second cell reselection threshold are different, including: the second cell reselection threshold is smaller than the first cell reselection threshold.
  • the input device 1001, the output device 1002, and the processor 1003 included in the MME according to the embodiment of the present invention may perform the first implementation of the paging method in the dense small base station deployment scenario provided by the embodiment of the present invention.
  • the specific steps in the example refer to the foregoing embodiment, and details are not described herein.
  • FIG. 12 is a schematic structural diagram of an embodiment of a macro base station according to an embodiment of the present invention.
  • the macro base station described in the embodiment of the present invention includes: at least one input device 2001; at least one output device 2002; at least one processor 2003, such as a CPU; and a memory 2004, the input device 2001, the output device 2002, the processor 2003
  • the memory 2004 is connected via a bus 2005.
  • the above memory 2004 may be a high speed RAM memory or a non-volatile memory such as a disk memory.
  • the above memory 2004 is used to store a set of program codes, and the input device 2001, the output device 2002, and the processor 2003 are used to call the program code stored in the memory 2004, and perform the following operations:
  • the input device 1001 is configured to receive signaling sent by each small base station included in a coverage area of the macro base station.
  • the processor 1003 is configured to determine, according to the identifier information carried in the signaling sent by each of the small base stations, which is received by the input device 1001, the type of the small base station, where the small base station includes the first type of small base station and The second type of small base station.
  • the output device 1002 is configured to send signaling to the MME, where the signaling carries a first cell reselection threshold corresponding to the first type of small base station and a second corresponding to the second type of small base station
  • the cell reselection threshold is used to trigger the MME to send paging signaling to the target small base station corresponding to the target cell reselection threshold included in each of the small base stations when receiving the paging request, where the first cell is heavy
  • the selected threshold and the second cell reselection threshold are not the same.
  • the input device 1001 is further configured to receive paging signaling sent by the MME.
  • the output device 1002 is further configured to: when the input device 1001 receives the paging signaling sent by the MME, broadcast the paging signaling to the user equipment UE in the coverage area.
  • the output device 1002 is further configured to:
  • the UE included in the coverage area of the small base station performs cell reselection according to the cell reselection threshold corresponding to the small base station.
  • the first type of small base station is: a hotspot covers a small base station, and the second type of small base station is a blind spot coverage small base station;
  • the first cell reselection threshold is different from the second cell reselection threshold, and the second cell reselection threshold is smaller than the first cell reselection threshold.
  • the input device 2001, the output device 2002, and the processor 2003 included in the macro base station according to the embodiment of the present invention may perform the second paging method in the dense small base station deployment scenario provided by the embodiment of the present invention.
  • the steps in the embodiments refer to the foregoing embodiments, and details are not described herein.
  • FIG. 13 is a schematic structural diagram of an embodiment of a UE according to an embodiment of the present invention.
  • the UE described in the embodiment of the present invention includes: at least one input device 3001; at least one output device 3002; at least one processor 3003, such as a CPU; and a memory 3004, the input device 3001, the output device 3002, the processor 3003, and The memory 3004 is connected by a bus 3005.
  • the above memory 3004 may be a high speed RAM memory or a non-volatile memory such as a disk memory.
  • the above-mentioned memory 3004 is used to store a set of program codes, and the input device 3001, the output device 3002, and the processor 3003 are used to call the program code stored in the memory 3004, and perform the following operations:
  • the input device 1001 is configured to receive signaling sent by the macro base station.
  • the processor 1003 is configured to determine, according to the signaling, a first type of small base station and a second type of small base station that are connected to the macro base station, and a first cell reselection corresponding to the first type of small base station. And a second cell reselection threshold corresponding to the second type of small base station, where the first cell reselection threshold and the second cell reselection threshold are different.
  • the processor 1003 is further configured to: when the UE performs cell reselection, set a cell reselection threshold used for cell reselection to be the first corresponding to the first type of small base station according to the type of the small base station to which the UE belongs. a cell reselection threshold or a second cell reselection threshold corresponding to the second type of small base station.
  • the processor 1003 is further configured to perform cell reselection and camping according to the first cell reselection threshold or the second cell reselection threshold.
  • the input device 3001, the output device 3002, and the processor 3003 included in the UE in the embodiment of the present invention may perform the third implementation of the paging method in the dense small base station deployment scenario provided by the embodiment of the present invention.
  • the specific steps in the example refer to the foregoing embodiment, and details are not described herein.
  • FIG. 14 is a schematic structural diagram of an embodiment of a paging system in a scenario of a dense small base station deployment according to an embodiment of the present invention.
  • the system described in the embodiment of the present invention includes: a terminal device such as an MME, a macro base station, a user equipment, and a small base station, where each of the foregoing terminal devices cooperates to implement a paging method in a scenario of dense small base station deployment, and the specific implementation process thereof
  • a terminal device such as an MME
  • MME mobile phone
  • Units or modules or sub-units (or sub-modules) in all embodiments of the present invention may be implemented by a general-purpose integrated circuit, such as a CPU (Central Processing Unit), or an ASIC (Application Specific Integrated Circuit). Circuit) to achieve.
  • a general-purpose integrated circuit such as a CPU (Central Processing Unit), or an ASIC (Application Specific Integrated Circuit). Circuit) to achieve.
  • CPU Central Processing Unit
  • ASIC Application Specific Integrated Circuit
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

Abstract

本发明实施例公开了一种在密集小基站部署场景下的寻呼方法，包括：MME根据宏基站发送的信令确定与所述宏基站连接的第一类型的小基站和第二类型的小基站；当所述MME接收到寻呼请求时，所述MME根据所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值，确定目标小区重选阈值对应的目标小基站；所述MME向所述宏基站和所述目标小基站发送寻呼信令，以触发所述宏基站和所述目标小基站向各自覆盖区域的UE广播寻呼信令。本发明实施例还公开了一种在密集小基站部署场景下的寻呼装置。采用本发明实施例，具有可避免MME向密集部署的所有小基站发送寻呼信令，减少系统资源浪费的优点。

Description

一种在密集小基站部署场景下的寻呼方法、装置及系统
本申请要求于2015年12月2日提交中国专利局、申请号为201510875340.3，发明名称为“一种在密集小基站部署场景下的寻呼方法、装置及系统”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
本发明涉及通信技术领域，尤其涉及一种在密集小基站部署场景下的寻呼方法、装置及系统。
背景技术
随着移动宽带的蓬勃发展，各种智能终端带来数据业务井喷式增长，以宏基站为主的网络部署已经很难满足容量需求，小基站(Small Cell)方案也因此应运而生，它能大幅度提升热点地区的容量，并提供盲点地区覆盖和室内覆盖。随着移动业务数据量的飞速增长，小基站也会部署的越来越密集，这样就会使得相关网络信令急剧增加，给接入网和核心网都带来巨大的信令负担。
在现有技术中，核心网对待小基站时遵循着传统的寻呼机制，即，核心网通过移动管理实体(Mobility Management Entity，MME)向所有管辖区(即所有小区)内的基站，包括宏基站和小基站，发送寻呼信令。所有收到MME发送的寻呼信令的基站，包括宏基站和小基站，再向自己所覆盖区域的用户设备(User Equipment，UE)广播寻呼信令。在密集小基站部署场景中，由于小基站部署很密集，每个小基站收到寻呼信令之后都会向其覆盖区域的所有UE广播寻呼信令，这将产生大量的核心网和接入网的寻呼信令，浪费系统资源。
发明内容
本发明实施例提供一种在密集小基站部署场景下的寻呼方法及装置，可避免MME向密集部署的所有小基站发送寻呼信令，减少系统资源浪费。
本发明实施例第一方面提供了一种在密集小基站部署场景下的寻呼方法，其可包括：
移动管理实体MME根据宏基站发送的信令确定与所述宏基站连接的第一类型的小基站和第二类型的小基站；
当所述MME接收到寻呼请求时，所述MME根据所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值，确定目标小区重选阈值对应的目标小基站，其中，所述第一小区重选阈值和第二小区重选阈值不相同；
所述MME向所述宏基站和所述目标小基站发送寻呼信令，以触发所述宏基站和所述目标小基站向各自覆盖区域的用户设备UE广播寻呼信令。
本发明实施例第二方面提供了一种在密集小基站部署场景下的寻呼方法，其可包括：
宏基站接收其覆盖区域中包含的各个小基站发送的信令；
所述宏基站根据各个所述小基站发送的信令中携带的标识信息确定各个所述小基站的类型，所述小基站中包含第一类型的小基站和第二类型的小基站；
所述宏基站向移动管理实体MME发送信令，所述信令中携带所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值，以触发所述MME在接收到寻呼请求时向各个所述小基站中包含的目标小区重选阈值对应的目标小基站发送寻呼信令，其中，所述第一小区重选阈值和第二小区重选阈值不相同；
当接收到所述MME发送的寻呼信令时，所述宏基站向其覆盖区域的用户设备UE广播所述寻呼信令。
本发明实施例第三方面提供了一种在密集小基站部署场景下的寻呼方法，其可包括：
用户设备UE接收宏基站发送的信令，根据所述信令确定与所述宏基站连接的第一类型的小基站和第二类型的小基站，以及所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值，其中，所述第一小区重选阈值和第二小区重选阈值不相同；
当所述UE进行小区重选时，根据所述UE所属小基站的类型将用来进行小区重选的小区重选阈值设定为所述第一类型的小基站对应的第一小区重选阈值或者所述第二类型的小基站对应的第二小区重选阈值；
所述UE根据所述第一小区重选阈值或者所述第二小区重选阈值进行小区重选和驻留。
本发明实施例第四方面提供了一种在密集小基站部署场景下的寻呼装置，其可包括：
确定单元，用于根据宏基站发送的信令确定与所述宏基站连接的第一类型的小基站和第二类型的小基站；
所述确定单元，还用于在接收到寻呼请求时，根据所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值，确定目标小区重选阈值对应的目标小基站，其中，所述第一小区重选阈值和第二小区重选阈值不相同；
寻呼单元，用于向所述宏基站和所述目标小基站发送寻呼信令，以触发所述宏基站和所述目标小基站向各自覆盖区域的用户设备UE广播寻呼信令。
本发明实施例第五方面提供了一种在密集小基站部署场景下的寻呼装置，其可包括：
接收单元，用于接收宏基站覆盖区域中包含的各个小基站发送的信令；
确定单元，用于根据所述接收单元接收的各个所述小基站发送的信令中携带的标识信息确定各个所述小基站的类型，所述小基站中包含第一类型的小基站和第二类型的小基站；
发送单元，用于向移动管理实体MME发送信令，所述信令中携带所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值，以触发所述MME在接收到寻呼请求时向各个所述小基站中包含的目标小区重选阈值对应的目标小基站发送寻呼信令，其中，所述第一小区重选阈值和第二小区重选阈值不相同；
广播单元，用于在接收到所述MME发送的寻呼信令时，向所述宏基站覆盖区域的用户设备UE广播所述寻呼信令。
本发明实施例第六方面提供了一种在密集小基站部署场景下的寻呼装置，其可包括：
接收单元，用于接收宏基站发送的信令；
确定单元，用于根据接收单元接收的所述信令确定与所述宏基站连接的第 一类型的小基站和第二类型的小基站，以及所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值，其中，所述第一小区重选阈值和第二小区重选阈值不相同；
设置单元，用于当UE进行小区重选时，根据所述UE所属小基站的类型将所述UE用来进行小区重选的小区重选阈值设定为所述第一类型的小基站对应的第一小区重选阈值或者所述第二类型的小基站对应的第二小区重选阈值；
处理单元，用于根据所述设置单元设定的所述第一小区重选阈值或者所述第二小区重选阈值进行小区重选和驻留。
本发明实施例第七方面提供了一种在密集小基站部署场景下的寻呼系统，其可包括：上述第四方面提供的装置、第五方面提供的装置和第六方面提供的装置。
实施本发明实施例，具有如下有益效果：
在本发明实施例中，MME可根据宏基站发送的信令确定与宏基站相连的各个小基站的类型，进而可在MME接收到寻呼请求时，根据各个类型的小基站对应的小区重选阈值确定目标小区重选阈值对应的目标小基站，向宏基站和与宏基站相连的多个小基站中的目标小基站发送寻呼信令，有选择性地向TA内的小基站发送寻呼信令，可避免MME向密集部署的所有小基站发送寻呼信令，减少MME给TA内的基站发送寻呼信令的数量，减少系统的资源浪费。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是现有技术在密集小基站部署场景下的寻呼方式示意图；
图2是本发明实施例提供的在密集小基站部署场景下的寻呼方法的第一实施例流程示意图；
图3是MME向宏基站和盲点覆盖小基站发送寻呼信令的示意图；
图4是本发明实施例提供的在密集小基站部署场景下的寻呼方法的第二实施例流程示意图；
图5是本发明实施例提供的在密集小基站部署场景下的寻呼方法的第三实施例流程示意图；
图6是本发明实施例提供的在密集小基站部署场景下的寻呼装置的一实施例的一结构示意图；
图7是本发明实施例提供的在密集小基站部署场景下的寻呼装置的一实施例的另一结构示意图；
图8是本发明实施例提供的在密集小基站部署场景下的寻呼装置的一实施例的另一结构示意图；
图9是本发明实施例提供的在密集小基站部署场景下的寻呼装置的另一实施例的结构示意图；
图10是本发明实施例提供的在密集小基站部署场景下的寻呼装置的另一实施例的结构示意图；
图11是本发明实施例提供的MME的实施例结构示意图；
图12是本发明实施例提供的宏基站的实施例结构示意图；
图13是本发明实施例提供的UE的实施例结构示意图；
图14是本发明实施例提供的密集小基站部署场景下的寻呼系统的实施例结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
具体实现中，为了更好地描述本发明实施例提供的在密集小基站部署场景下的寻呼方法，下面将结合图1对密集小基站部署场景下的现有寻呼方式进行描述。
参见图1，是现有技术在密集小基站部署场景下的寻呼方式示意图。长期 演进(Long Term Evolution，LTE)系统中的寻呼功能可以通知在空闲模式(IDLE Mode)(或称空闲状态)的UE和网络建立连接，使得UE处于连接模式(Connected Mode)(或称连接状态)。要实现上述寻呼功能，LTE核心网的MME需要向UE所在的跟踪区域(Tracking Area，TA)内的所有基站(包括宏基站和小基站)发送寻呼(Paging)信令，上述宏基站或者小基站通过空口无线资源控制(Radio Resource Control，RRC)信令广播该寻呼信令，以找到处于空闲模式的UE。处于空闲模式的UE收到基站发出的寻呼信令后，开始建立和网络的连接，进入连接模式。
在密集小基站部署场景下，UE所在的一个TA内将会部署有数量巨大的小基站，如果根据现有寻呼方式，MME需要向UE所在的TA内的所有基站(包括宏基站和小基站)发送寻呼信令，这会对核心网带来巨大的信令负担(Signaling Overhead)。此外，如此数量巨大的小基站在收到MME广播的寻呼信令后还需要向自己所覆盖的小区中的UE广播该寻呼信令，对接入网造成巨大的空口(Air Interface)信令负担。
现有的寻呼方式中，处于空闲模式的UE需要选择一个合适的基站进行驻留并进行小区重选，3GPP标准化协议中规定了空闲模式的UE的小区选择及重选规则为：
UE进行小区选择时需要满足S准则，即Srxlev>0and Squal>0，其中，
Srxlev＝Qrxlevmeas-(Qrxlevmin+Qrxlevminoffset)；
Squal＝Qqualmeas-(Qqualmin+Qqualminoffset)；
其中，上述Srxlev为小区选择接收等级值，Squal为小区选择数量值，Qrxlevmeas为测量小区接收等级值，Qrxlevmin为最小需求接收等级值，Qrxlevminoffset为最小需求接收等级值偏移值，Qqualmeas为测量小区数量值，Qqualmin为最小需求数量值，Qqualminoffset为最小需求数量值偏移值。上述Srxlev、Squal、Qrxlevmeas、Qrxlevmin、Qrxlevminoffset、Qqualmeas、Qqualmin、Qqualminoffset等变量均为3GPP标准化协议中定义好的变量，具体可参见3GPP TS 36.304，在此不再赘述。
UE进行小区重选时，对于优先级低的相邻小区，需要相邻小区的信号质量高于门限值ThreshX-low，并且当前服务小区的信号质量低于门限值 ThreshServing-Low，并持续Treselection长的时间。对于优先级高的相邻小区，只要相邻小区的信号质量高于门限值ThreshX-High，并持续Treselection长的时间。其中，上述ThreshX-low、ThreshServing-Low、ThreshX-High和Treselection等变量均为3GPP标准化协议中定义好的变量，具体可参见3GPP TS 36.331，在此不再赘述。其中，ThreshX-low，ThreshServing-Low和ThreshX-high的取值范围可为(0～31)*2dB，Treselection的取值范围可为(0～31)秒，具体可根据应用场景确定，在此不做限制。
下面将结合图2至图14对本发明实施例提供的在密集小基站部署场景下的寻呼方法及装置进行具体说明。
参见图2，是本发明实施例提供的在密集小基站部署场景下的寻呼方法的第一实施例流程示意图。本发明实施例中所描述的方法，包括步骤：
S101，移动管理实体MME根据宏基站发送的信令确定与所述宏基站连接的第一类型的小基站和第二类型的小基站。
在一些可行的实施方式中，在密集小基站部署场景中的小基站可与宏基站相连接，进而可通过与宏基站相连接的X2接口发送信令给宏基站，告知宏基站其类型。例如，在密集小基站部署场景中包括小基站1、小基站2和小基站3等小基站，小基站1(或者小基站2，或者小基站3)可通过与宏基站相连接的X2接口发送信息给其所属的宏基站，告知宏基站该小基站1(或者小基站2，或者小基站3)的类型。宏基站收到小基站发送的信令之后，则可通过S1接口向与之相连的MME发送信令，告知MME与上述宏基站相连的各个小基站的类型。其中，上述宏基站发送的信令中携带各个小基站的类型的标识信息，即运营商预先设定好小基站的类型，并通过相应的标识信息进行标记。MME接收到宏基站发送的信令之后，可对上述信令进行解析，根据上述信令中携带的小基站的类型的标识信息确定与上述宏基站连接的各个小基站的类型。其中，上述宏基站连接的小基站中包括多个类型(至少包括第一类型和第二类型两种类型)的小基站。例如，宏基站可通过S1接口向MME发送信令，通过上述信令告知MME与其连接的小基站1、小基站2和小基站3的类型。MME接收到宏基站发送的信令之后，则可对上述信令进行解析确定与宏基站连接的小 基站1、小基站2和小基站3的类型。
在一些可行的实施方式中，上述小基站的类型可包括：第一类型的小基站和第二类型的小基站等，其中，第一类型的小基站可为热点覆盖小基站，第二类型的小基站可为盲点覆盖小基站。小基站可通过X2接口告知与其连接的宏基站其类型为热点覆盖还是盲点覆盖，以触发宏基站告知MME该小基站的类型，或者通过宏基站向该小基站对应的覆盖小区的UE通知该小基站的类型。上述小基站1、小基站2和小基站3中可包括热点覆盖小基站(假设为小基站1和小基站3)和盲点覆盖小基站(假设为小基站2)。宏基站可向各个小基站对应的覆盖小区中的UE广播各个小基站的类型。
在一些可行的实施方式中，MME接收到宏基站发送的信令之后，可对宏基站发送的信令进行解析，获取宏基站发送的信令中携带的与宏基站连接的各个小基站的类型的标识信息，进而可根据上述标识信息确定与宏基站连接的第一类型的小基站和第二类型的小基站。其中，上述第一类型的小基站可为热点覆盖小基站，上述第二类型的小基站可为盲点覆盖小基站。
进一步的，在一些可行的实施方式中，MME接收到宏基站发送的信令之后，可根据上述信令中携带的小基站的相关信息确定与上述宏基站连接的小基站，其中，上述小基站可包括第二类型的小基站和第二类型的小基站等至少两种类型的小基站。MME可根据各个小基站的业务量或者负载等信息确定各个小基站的类型，进而可根据各个小基站的类型为各个小基站设定小区重选阈值。具体的，MME可设定第一类型的小基站对应的小区重选阈值为第一小区重选阈值，第二类型的小基站对应的小区重选阈值为第二小区重选阈值，上述第二小区重选阈值小于第一小区重选阈值。
S102，当所述MME接收到寻呼请求时，所述MME根据所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值，确定目标小区重选阈值对应的目标小基站。
在一些可行的实施方式中，MME根据宏基站发送的信令确定了与宏基站相连接的各个小基站的类型之后，当MME接收到寻呼请求时，MME可根据宏基站连接的各个小基站的类型，确定类型为目标类型的小基站(即目标小基站)。具体实现中，MME在接收到寻呼请求时，可对宏基站发送的信令进行 解析，从宏基站发送的信令中获取第一类型的小基站对应的第一小区重选阈值和第二类型的小基站对应的第二小区重选阈值。
进一步的，在一些可行的实施方式中，MME也可根据小基站的业务量或者负载等信息确定小基站的类型之后为不同类型的小基站设置不同的小区重选阈值，以根据设定的小区重选阈值更新宏基站信令中携带的各个类型的小基站对应的小区重选阈值。MME可根据不同类型的小基站的小区重选阈值确定向哪些小基站发送寻呼信令。具体的，MME可根据各个小基站对应的小区重选阈值，从上述各个小基站中查找目标小区重选阈值对应的小基站，将其确定为目标小基站，以向目标小基站发送寻呼信令。例如，MME从上述各个小基站中查找第二小区重选阈值(即目标小区重选阈值为第二小区重选阈值)对应的小基站，即盲点覆盖小基站，将上述目标小区重选阈值对应的盲点覆盖小基站确定为目标小基站。例如，MME可从小基站1、小基站2和小基站3中查找得到类型为盲点覆盖的目标小基站为小基站2。
S103，所述MME向所述宏基站和所述目标小基站发送寻呼信令。
在一些可行的实施方式中，MME接收到寻呼请求，并且从宏基站连接的各个小基站中查找得到目标小基站之后，可向宏基站和上述目标小基站发送寻呼信令，以触发宏基站和目标小基站向各自覆盖区域内的UE广播寻呼信令。具体的，当MME确定了宏基站相连的小基站1、小基站2和小基站3中包含的盲点覆盖小基站为小基站2之后，则可向宏基站和小基站2广播信号信令，而不对小基站1和小基站3发送寻呼信令，选择性地向TA内的小基站发送寻呼信令，减少MME给TA内的基站发送寻呼信令的数量，减少系统的资源浪费。如图3，为MME向宏基站和盲点覆盖小基站发送寻呼信令的示意图。其中，UE#1即为本发明实施例中所描述的UE，小基站#1即为本发明实施例中所描述的小基站1，小基站#2即为本发明实施例中所描述的小基站2，小基站#3即为本发明实施例中所描述的小基站3，在此不做限制。
在本发明实施例中，MME可根据宏基站发送的信令确定与宏基站相连的各个小基站的类型，进而可在MME接收到寻呼请求时，根据各个类型的小基站对应的小区重选阈值确定目标小区重选阈值对应的目标小基站，向宏基站和与宏基站相连的多个小基站中的目标小基站发送寻呼信令，有选择性地向TA 内的小基站发送寻呼信令，可避免MME向密集部署的所有小基站发送寻呼信令，减少MME给TA内的基站发送寻呼信令的数量，减少系统的资源浪费。
参见图4，是本发明实施例提供的在密集小基站部署场景下的寻呼方法的第二实施例流程示意图。本发明实施例中所描述的方法，包括步骤：
S201，宏基站接收其覆盖区域中包含的各个小基站发送的信令。
在一些可行的实施方式中，在密集小基站部署场景中的小基站可与宏基站相连接，进而可通过与宏基站相连接的X2接口发送信令给宏基站，告知宏基站其类型。例如，在密集小基站部署场景中包括小基站1、小基站2和小基站3等小基站，小基站1(或者小基站2，或者小基站3)可通过与宏基站相连接的X2接口发送信息给其所属的宏基站，告知宏基站该小基站1(或者小基站2，或者小基站3)的类型。宏基站可通过X2接口接收其覆盖区域中包含的各个小基站发送的信令，进而可根据上述信令确定各个小基站的类型。
S202，所述宏基站根据各个所述小基站发送的信令中携带的标识信息确定各个所述小基站的类型。
在一些可行的实施方式中，宏基站接收到其覆盖区域内的各个小基站包含的信令之后，则可对各个小基站发送的信令进行解析，根据各个小基站发送的信令中携带的标识信息确定各个小基站的类型。其中，上述小基站的类型可包括：第一类型和第二类型，其中第一类型的小基站为热点覆盖小基站，第二类型的小基站为盲点覆盖小基站。上述小基站1、小基站2和小基站3中可包括热点覆盖小基站(假设为小基站1和小基站3)和盲点覆盖小基站(假设为小基站2)，上述小基站1、小基站2和小基站3的类型仅是举例，而非穷举，在此不做限制。
S203，所述宏基站向移动管理实体MME发送信令。
在一些可行的实施方式中，宏基站接收得到其覆盖区域的小基站发送的信令，确定了各个小基站的类型之后，可通过S1接口向MME发送信令，将上述各个小基站的类型及其对应的小区重选阈值通过上述信令发送给MME。具体实现中，宏基站可将上述各个小基站中第一类型的小基站对应的第一小区重选阈值和第二类型的小基站对应的第二小区重选阈值携带在上述信令中发送 给MME，以供MME对各个小基站进行选择性地发送寻呼信令。其中，上述第一小区重选阈值和第二小区重选阈值不相同，具体可为第二小区重选阈值小于第一小区重选阈值。
S204，当接收到所述MME发送的寻呼信令时，所述宏基站向其覆盖区域的UE广播所述寻呼信令。
在一些可行的实施方式中，宏基站将其覆盖区域内的小基站的类型等信息告知给MME之后，当MME接收到寻呼请求时，MME将向宏基站和指定类型的小基站发送寻呼信令。宏基站接收到MME发送的寻呼信令后，则可向其覆盖区域内的UE广播该寻呼信令。
进一步的，在一些可行的实施方式中，宏基站确定了其覆盖区域内的各个小基站的类型之后，还可通过广播信息告知其覆盖区域内包含的UE上述各个类型的小基站对应的小区重选阈值，触发各个小基站的覆盖区域内包含的UE根据上述小区重选阈值进行小区重选。具体实现中，上述类型为热点覆盖的小基站对应的小区重选阈值为Threshx-low_pico_boost，上述类型为盲点覆盖的小基站对应的小区重选阈值为Threshx-low_pico_dc，其中，上述Threshx-low_pico_dc小于3GPP标准化协议中定义的默认小区重选阈值Threshx-low，上述Threshx-low小于Threshx-low_pico_boost。UE获取得到宏基站广播的各个小基站的类型对应的小区重选阈值之后，则可在进行小区重选时设定小区重选阈值以选定相应的小区驻留。具体的，假设在T1时刻，UE检测得到其处于宏基站的覆盖区域内，周围没有任何小基站，则UE在进行小区重选时，可将用来进行小区重选的小区重选阈值Threshx-low设为宏基站覆盖对应的小区重选阈值Threshx-low，即默认小区重选阈值Threshx-low。假设在T2时刻，UE检测得到其处于小基站1的覆盖区域内，小基站1为热点覆盖小基站，则UE在进行小区重选时，可将用来进行小区重选的小区阈值Threshx-low设定为热点覆盖小基站对应的小区重选阈值Threshx-low_pico_boost。由于Threshx-low_pico_boost取值较大，UE与热点覆盖小基站之间的链路信号强度不可能高于Threshx-low_pico_boost，因此根据前面描述的小区重选准则，UE将继续选择当前服务的宏基站进行驻留。假设在T3时刻，UE检测得到其处于小基站2的覆盖区域内，小基站2为盲点覆盖小基站，则UE在进行小区重选时，可将用来进行小区重选的小区阈值Threshx-low设定为盲点覆 盖小基站对应的小区重选阈值Threshx-low_pico_dc。由于Threshx-low_pico_dc取值较小，UE与盲点覆盖小基站之间的链路信号强度很容易高于Threshx-low_pico_dc，因此根据前面描述的小区重选准则，UE将迅速选择盲点覆盖小基站进行驻留。可保证在进行小区重选时不会选择热点覆盖小基站进行驻留，而是选择盲点覆盖小基站或者邻小区的宏基站进行驻留，进而可减少MME发送寻呼信令的对象数量。即，MME只给宏基站和盲点覆盖小基站发送寻呼信令，热点覆盖小基站不发送寻呼信令，减少MME发送寻呼信令给核心网和接入网带来的信令负担。
在本发明实施例中，宏基站接收到其覆盖区域内的各个小基站发送的信令，确定了各个小基站的类型之后，可将各个小基站的类型告知给MME。MME可根据宏基站发送的信令确定与宏基站相连的各个小基站的类型，进而可在MME接收到寻呼请求时，向宏基站和与宏基站相连的多个小基站中的目标小基站发送寻呼信令，有选择性地向TA内的小基站发送寻呼信令，可避免MME向密集部署的所有小基站发送寻呼信令，减少MME给TA内的基站发送寻呼信令的数量，减少系统的资源浪费。进一步的，宏基站确定了各个小基站的类型之后，还可为不同类型的小基站配置小区重选阈值，进而将各个类型的小基站的小区重选阈值广播给UE，触发UE在进行小区重选时更多的选择盲点覆盖小基站或者邻小区宏基站进行驻留，进而可减少MME发送寻呼信令的接收对象，减少MME发送寻呼信令给核心网和接入网带来的信令负担。
参见图5，是本发明实施例提供的在密集小基站部署场景下的寻呼方法的第三实施例流程示意图。本发明实施例中所描述的方法，包括步骤：
S301，用户设备UE接收宏基站发送的信令，根据所述信令确定与所述宏基站连接的第一类型的小基站和第二类型的小基站，以及所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值。
S302，当所述UE进行小区重选时，根据所述UE所属小基站的类型将用来进行小区重选的小区重选阈值设定为所述第一类型的小基站对应的第一小区重选阈值或者所述第二类型的小基站对应的第二小区重选阈值。
S303，所述UE根据所述第一小区重选阈值或者所述第二小区重选阈值进行小区重选和驻留。
在一些可行的实施方式中，上述所述第一类型的小基站为：热点覆盖小基站，所述第二类型的小基站为盲点覆盖小基站；
所述第一小区重选阈值和所述第二小区重选阈值不相同，包括：所述第二小区重选阈值小于所述第一小区重选阈值。
具体实现中，上述UE根据宏基站广播的各个小基站的类型设定小区重选阈值，并根据新设置的小区重选阈值进行小区重选和驻留的具体实现过程可参见上述第一实施例和第二实施例中各个步骤所描述的实现方式，在此不再赘述。
在本发明实施例中，UE可根据宏基站发送的信令确定各个小基站的类型，以及不同类型的小基站的小区重选阈值，在进行小区重选时可根据所处小基站的类型重选设置小区重选阈值，进而可更多地选择盲点覆盖小基站或者邻小区宏基站进行驻留，可减少MME发送寻呼信令的接收对象，减少MME发送寻呼信令给核心网和接入网带来的信令负担。
参见图6，是本发明实施例提供的在密集小基站部署场景下的寻呼装置的一实施例结构示意图。本发明实施例中所描述的装置，包括：确定单元10和寻呼单元12。
具体实现中，本发明实施例中所描述的寻呼装置具体可为本发明实施例中所描述的MME或者MME中包含的某个功能模块(本发明实施例将以MME为例进行说明)，其可包括确定单元10和寻呼单元11等模块。下面将结合上述在密集小基站部署场景下的寻呼方法的第一实施例中各个步骤所描述的实现方式对MME包含的各个模块的实现方式进行描述：
确定单元10，用于根据宏基站发送的信令确定与所述宏基站连接的第一类型的小基站和第二类型的小基站。
在一些可行的实施方式中，上述确定单元10具体用于：
对所述宏基站发送的信令进行解析，获取所述信令中携带的与所述宏基站连接的各个小基站的类型的标识信息，并根据所述标识信息确定各个所述小基站的类型，所述小基站中包括第一类型的小基站和第二类型的小基站；
其中，所述第一类型的小基站为热点覆盖小基站，所述第二类型的小基站为盲点覆盖小基站。
在一些可行的实施方式中，在密集小基站部署场景中的小基站可与宏基站相连接，进而可通过与宏基站相连接的X2接口发送信令给宏基站，告知宏基站其类型。例如，在密集小基站部署场景中包括小基站1、小基站2和小基站3等小基站，小基站1(或者小基站2，或者小基站3)可通过与宏基站相连接的X2接口发送信息给其所属的宏基站，告知宏基站该小基站1(或者小基站2，或者小基站3)的类型。宏基站收到小基站发送的信令之后，则可通过S1接口向与之相连的MME发送信令，告知MME与上述宏基站相连的各个小基站的类型。其中，上述宏基站发送的信令中携带各个小基站的类型的标识信息，即运营商预先设定好小基站的类型，并通过相应的标识信息进行标记。MME的确定单元10接收到宏基站发送的信令之后，可对上述信令进行解析，根据上述信令中携带的小基站的类型的标识信息确定与上述宏基站连接的各个小基站的类型。其中，上述宏基站连接的小基站中包括多个类型(至少包括第一类型和第二类型两种类型)的小基站。例如，宏基站可通过S1接口向MME发送信令，通过上述信令告知MME与其连接的小基站1、小基站2和小基站3的类型。确定单元10接收到宏基站发送的信令之后，则可对上述信令进行解析确定与宏基站连接的小基站1、小基站2和小基站3的类型。
在一些可行的实施方式中，上述小基站的类型可包括：第一类型的小基站和第二类型的小基站等，其中，第一类型的小基站可为热点覆盖小基站，第二类型的小基站可为盲点覆盖小基站。小基站可通过X2接口告知与其连接的宏基站其类型为热点覆盖还是盲点覆盖，以触发宏基站告知MME该小基站的类型，或者通过宏基站向该小基站对应的覆盖小区的UE通知该小基站的类型。上述小基站1、小基站2和小基站3中可包括热点覆盖小基站(假设为小基站1和小基站3)和盲点覆盖小基站(假设为小基站2)。宏基站可向各个小基站对应的覆盖小区中的UE广播各个小基站的类型。
在一些可行的实施方式中，确定单元10接收到宏基站发送的信令之后，可对宏基站发送的信令进行解析，获取宏基站发送的信令中携带的与宏基站连接的各个小基站的类型的标识信息，进而可根据上述标识信息确定与宏基站连接的第一类型的小基站和第二类型的小基站。
进一步的，在一些可行的实施方式中，上述确定单元10具体用于：
根据所述宏基站发送的信令确定与所述宏基站连接的至少两种类型的小基站，并根据各个所述小基站的业务量或者负载确定各个所述小基站的类型，所述小基站中包括第一类型的小基站和第二类型的小基站；
其中，所述第一类型的小基站为热点覆盖小基站，所述第二类型的小基站为盲点覆盖小基站。
在一些可行的实施方式中，本发明实施例中所描述的装置(参见图7)还包括：
设置单元13，用于设定第一类型的小基站对应的第一小区重选阈值和第二类型的小基站对应的第二小区重选阈值。
进一步的，在一些可行的实施方式中，确定单元10接收到宏基站发送的信令之后，可根据上述信令中携带的小基站的相关信息确定与上述宏基站连接的小基站，其中，上述小基站可包括第二类型的小基站和第二类型的小基站等至少两种类型的小基站。确定单元10可根据各个小基站的业务量或者负载等信息确定各个小基站的类型，进而可通过设置单元13根据各个小基站的类型为各个小基站设定小区重选阈值。具体的，设置单元13可设定第一类型的小基站对应的小区重选阈值为第一小区重选阈值，第二类型的小基站对应的小区重选阈值为第二小区重选阈值，上述第二小区重选阈值小于第一小区重选阈值。
所述确定单元10，还用于在接收到寻呼请求时，根据所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值，确定目标小区重选阈值对应的目标小基站，其中，所述第一小区重选阈值和第二小区重选阈值不相同。
在一些可行的实施方式中，本发明实施例中所描述的装置(参见图8)还包括：
获取单元12，用于对所述宏基站发送的信令进行解析，从所述信令中获取所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值。
在一些可行的实施方式中，确定单元10根据宏基站发送的信令确定了与宏基站相连接的各个小基站的类型之后，当接收到寻呼请求时，可根据宏基站连接的各个小基站的类型，确定类型为目标类型的小基站(即目标小基站)。 具体实现中，确定单元10可通过获取单元12在接收到寻呼请求时，可对宏基站发送的信令进行解析，从宏基站发送的信令中获取第一类型的小基站对应的第一小区重选阈值和第二类型的小基站对应的第二小区重选阈值。确定单元10可根据不同类型的小基站的小区重选阈值确定向哪些小基站发送寻呼信令。具体的，确定单元10可根据各个小基站对应的小区重选阈值，从上述各个小基站中查找目标小区重选阈值对应的小基站，将其确定为目标小基站，以向目标小基站发送寻呼信令。例如，确定单元10从上述各个小基站中查找第二小区重选阈值(即目标小区重选阈值为第二小区重选阈值)对应的小基站，即盲点覆盖小基站，将上述目标小区重选阈值对应的盲点覆盖小基站确定为目标小基站。例如，确定单元10可从小基站1、小基站2和小基站3中查找得到类型为盲点覆盖的目标小基站为小基站2。
寻呼单元11，用于向所述宏基站和所述目标小基站发送寻呼信令，以触发所述宏基站和所述目标小基站向各自覆盖区域的用户设备UE广播寻呼信令。
在一些可行的实施方式中，确定单元10接收到寻呼请求，并且从宏基站连接的各个小基站中查找得到目标小基站之后，寻呼单元11可向宏基站和上述目标小基站发送寻呼信令，以触发宏基站和目标小基站向各自覆盖区域内的UE广播寻呼信令。具体的，当确定单元10确定了宏基站相连的小基站1、小基站2和小基站3中包含的盲点覆盖小基站为小基站2之后，寻呼单元11则可向宏基站和小基站2广播信号信令，而不对小基站1和小基站3发送寻呼信令，选择性地向TA内的小基站发送寻呼信令，减少MME给TA内的基站发送寻呼信令的数量，减少系统的资源浪费，如图3。
在本发明实施例中，MME可根据宏基站发送的信令确定与宏基站相连的各个小基站的类型，进而可在MME接收到寻呼请求时，根据各个类型的小基站对应的小区重选阈值确定目标小区重选阈值对应的目标小基站，向宏基站和与宏基站相连的多个小基站中的目标小基站发送寻呼信令，有选择性地向TA内的小基站发送寻呼信令，可避免MME向密集部署的所有小基站发送寻呼信令，减少MME给TA内的基站发送寻呼信令的数量，减少系统的资源浪费。
参见图9，是本发明实施例提供的在密集小基站部署场景下的寻呼装置的 另一实施例结构示意图。本发明实施例中所描述的装置，包括：接收单元20、确定单元21、发送单元22和广播单元23。
具体实现中，本发明实施例中所描述的寻呼装置具体可为本发明实施例中所描述的宏基站或者宏基站中包含的某个功能模块(本发明实施例将以宏基站为例进行说明)，其可包括接收单元20、确定单元21、发送单元22和广播单元23等模块。下面将结合上述在密集小基站部署场景下的寻呼方法的第二实施例中各个步骤所描述的实现方式对宏基站包含的各个模块的实现方式进行描述。
接收单元20，用于接收宏基站覆盖区域中包含的各个小基站发送的信令。
在一些可行的实施方式中，在密集小基站部署场景中的小基站可与宏基站相连接，进而可通过与宏基站相连接的X2接口发送信令给宏基站，告知宏基站其类型。例如，在密集小基站部署场景中包括小基站1、小基站2和小基站3等小基站，小基站1(或者小基站2，或者小基站3)可通过与宏基站相连接的X2接口发送信息给其所属的宏基站，告知宏基站该小基站1(或者小基站2，或者小基站3)的类型。宏基站的接收单元20可通过X2接口接收其覆盖区域中包含的各个小基站发送的信令，进而可根据上述信令确定各个小基站的类型。
确定单元21，用于根据所述接收单元接收的各个所述小基站发送的信令中携带的标识信息确定各个所述小基站的类型，所述小基站中包含第一类型的小基站和第二类型的小基站。
在一些可行的实施方式中，接收单元20接收到其覆盖区域内的各个小基站包含的信令之后，确定单元21则可对各个小基站发送的信令进行解析，根据各个小基站发送的信令中携带的标识信息确定各个小基站的类型。其中，上述小基站的类型可包括：第一类型和第二类型，其中第一类型的小基站为热点覆盖小基站，第二类型的小基站为盲点覆盖小基站。上述小基站1、小基站2和小基站3中可包括热点覆盖小基站(假设为小基站1和小基站3)和盲点覆盖小基站(假设为小基站2)，上述小基站1、小基站2和小基站3的类型仅是举例，而非穷举，在此不做限制。
发送单元22，用于向移动管理实体MME发送信令，所述信令中携带所 述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值，以触发所述MME在接收到寻呼请求时向各个所述小基站中包含的目标小区重选阈值对应的目标小基站发送寻呼信令，其中，所述第一小区重选阈值和第二小区重选阈值不相同。
在一些可行的实施方式中，接收单元20接收得到其覆盖区域的小基站发送的信令，确定单元21确定了各个小基站的类型之后，发送单元22可通过S1接口向MME发送信令，将上述各个小基站的类型及其对应的小区重选阈值通过上述信令发送给MME。具体实现中，发送单元22可将上述各个小基站中第一类型的小基站对应的第一小区重选阈值和第二类型的小基站对应的第二小区重选阈值携带在上述信令中发送给MME，以供MME对各个小基站进行选择性地发送寻呼信令。其中，上述第一小区重选阈值和第二小区重选阈值不相同，具体可为第二小区重选阈值小于第一小区重选阈值。
广播单元23，用于在接收到所述MME发送的寻呼信令时，向所述宏基站覆盖区域的用户设备UE广播所述寻呼信令。
在一些可行的实施方式中，上述广播单元23还用于：
通过广播信息告知所述宏基站覆盖区域包含的UE所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值，以触发各个所述小基站的覆盖区域中包含的UE根据所述小基站对应的小区重选阈值进行小区重选。
在一些可行的实施方式中，发送单元22将宏基站覆盖区域内的小基站的类型等信息告知给MME之后，当MME接收到寻呼请求时，MME将向宏基站和指定类型的小基站发送寻呼信令。广播单元23接收到MME发送的寻呼信令后，则可向其覆盖区域内的UE广播该寻呼信令。
进一步的，在一些可行的实施方式中，确定单元21确定了其覆盖区域内的各个小基站的类型之后，广播单元23还可通过广播信息告知宏基站覆盖区域内包含的UE上述各个类型的小基站对应的小区重选阈值，触发各个小基站的覆盖区域内包含的UE根据上述小区重选阈值进行小区重选。具体实现中，上述类型为热点覆盖的小基站对应的小区重选阈值为Threshx-low_pico_boost，上述类型为盲点覆盖的小基站对应的小区重选阈值为Threshx-low_pico_dc，其中，上述 Threshx-low_pico_dc小于3GPP标准化协议中定义的默认小区重选阈值Threshx-low，上述Threshx-low小于Threshx-low_pico_boost。UE获取得到宏基站广播的各个小基站的类型对应的小区重选阈值之后，则可在进行小区重选时设定小区重选阈值以选定相应的小区驻留。具体的，假设在T1时刻，UE检测得到其处于宏基站的覆盖区域内，周围没有任何小基站时，UE在进行小区重选时，可将用来进行小区重选的小区重选阈值Threshx-low设为宏基站覆盖对应的小区重选阈值Threshx-low，即默认小区重选阈值Threshx-low。假设在T2时刻，UE检测得到其处于小基站1的覆盖区域内，小基站1为热点覆盖小基站，则UE在进行小区重选时，可将用来进行小区重选的小区阈值Threshx-low设定为热点覆盖小基站对应的小区重选阈值Threshx-low_pico_boost。由于Threshx-low_pico_boost取值较大，UE与热点覆盖小基站之间的链路信号强度不可能高于Threshx-low_pico_boost，因此根据前面描述的小区重选准则，UE将继续选择当前服务的宏基站进行驻留。假设在T3时刻，UE检测得到其处于小基站2的覆盖区域内，小基站2为盲点覆盖小基站，则UE在进行小区重选时，可将用来进行小区重选的小区阈值Threshx-low设定为盲点覆盖小基站对应的小区重选阈值Threshx-low_pico_dc。由于Threshx-low_pico_dc取值较小，UE与盲点覆盖小基站之间的链路信号强度很容易高于Threshx-low_pico_dc，因此根据前面描述的小区重选准则，UE将迅速选择盲点覆盖小基站进行驻留。可保证在进行小区重选时不会选择热点覆盖小基站进行驻留，而是选择盲点覆盖小基站或者邻小区的宏基站进行驻留，进而可减少MME发送寻呼信令的对象数量即，MME只给宏基站和盲点覆盖小基站发送寻呼信令，热点覆盖小基站不发送寻呼信令，减少MME发送寻呼信令给核心网和接入网带来的信令负担。
在本发明实施例中，宏基站接收到其覆盖区域内的各个小基站发送的信令，确定了各个小基站的类型之后，可将各个小基站的类型告知给MME。MME可根据宏基站发送的信令确定与宏基站相连的各个小基站的类型，进而可在MME接收到寻呼请求时，向宏基站和与宏基站相连的多个小基站中的目标小基站发送寻呼信令，有选择性地向TA内的小基站发送寻呼信令，可避免MME向密集部署的所有小基站发送寻呼信令，减少MME给TA内的基站发送寻呼信令的数量，减少系统的资源浪费。进一步的，宏基站确定了各个小基站的类 型之后，还可为不同类型的小基站配置小区重选阈值，进而将各个类型的小基站的小区重选阈值广播给UE，触发UE在进行小区重选时更多的选择盲点覆盖小基站或者邻小区宏基站进行驻留，进而可减少MME发送寻呼信令的接收对象，减少MME发送寻呼信令给核心网和接入网带来的信令负担。
参见图10，是本发明实施例提供的在密集小基站部署场景下的寻呼装置的另一实施例结构示意图。本发明实施例中所描述的装置，包括：接收单元30、确定单元31、设置单元32和处理单元33。
具体实现中，本发明实施例中所描述的寻呼装置具体可为本发明实施例中所描述的UE或者UE中包含的某个功能模块(本发明实施例将以UE为例进行说明)，其可包括接收单元30、确定单元31、设置单元32和处理单元33等模块。下面将结合上述在密集小基站部署场景下的寻呼方法的第三实施例中各个步骤所描述的实现方式对UE包含的各个模块的实现方式进行描述。
接收单元30，用于接收宏基站发送的信令。
具体实现中，上述接收单元30接收宏基站发送的信令的具体实现过程可参见上述各个实施例中所描述的实现方式，在此不再赘述。
确定单元31，用于根据接收单元接收的所述信令确定与所述宏基站连接的第一类型的小基站和第二类型的小基站，以及所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值，其中，所述第一小区重选阈值和第二小区重选阈值不相同。
在一些可行的实施方式中，接收单元30接收到宏基站发送的信令之后，确定单元31可对上述信令进行解析，根据上述信令中携带的信息确定与宏基站连接的各个小基站的类型，包括第一类型的小基站和第二类型的小基站。上述第一类型的小基站为：热点覆盖小基站，第二类型的小基站为盲点覆盖小基站。
在一些可行的实施方式中，宏基站确定了其覆盖区域内的各个小基站的类型之后，可通过广播信息告知其覆盖区域内包含的UE上述各个类型的小基站对应的小区重选阈值，触发各个小基站的覆盖区域内包含的UE根据上述小区重选阈值进行小区重选。UE的确定单元31可根据上述广播信息确定第一类型 的小基站对应的第一小区重选阈值和第二类型的小基站对应的第二小区重选阈值。其中，上述第二小区重选阈值小于第一小区重选阈值。具体实现中，上述类型为热点覆盖的小基站对应的小区重选阈值为Threshx-low_pico_boost，上述类型为盲点覆盖的小基站对应的小区重选阈值为Threshx-low_pico_dc，其中，上述Threshx-low_pico_dc小于3GPP标准化协议中定义的默认小区重选阈值Threshx-low，上述Threshx-low小于Threshx-low_pico_boost。具体实现中，上述确定单元31根据宏基站发送的信令确定小基站的类型及其对应的小区重选阈值的具体实现过程可参见上述各个实施例中所描述的实现方式，在此不再赘述。
设置单元32，用于当UE进行小区重选时，根据所述UE所属小基站的类型将所述UE用来进行小区重选的小区重选阈值设定为所述第一类型的小基站对应的第一小区重选阈值或者所述第二类型的小基站对应的第二小区重选阈值。
处理单元33，用于根据所述设置单元设定的所述第一小区重选阈值或者所述第二小区重选阈值进行小区重选和驻留。
在一些可行的实施方式中，确定单元31确定各个小基站的类型及其对应的小区重选阈值之后，设置单元32可在UE进行小区重选时设定小区重选阈值以选定相应的小区驻留。具体实现中，UE可检测其所处区域的基站的导频信号，获取其所处区域所能接收到的各个基站的导频信号，包括宏基站的导频信号和小基站的导频信号。进一步的，UE可根据接收到的各个基站的导频信号的强度从中选择导频信号最强的基站作为UE所属基站。即，当UE处于某个区域时，该区域可能为多个基站的覆盖区域，UE可接收到覆盖到该区域的各个基站发送的导频信号，进而可根据导频信号强度确定导频信号最强的基站，将该基站作为其所属基站。若UE只能检测得到宏基站的导频信号，则可确定周围没有任何小基站。若UE既检测得到宏基站的导频信号，又检测得到小基站的导频信号，则可根据检测到的导频信号的强度确定其所属基站。具体的，假设在T1时刻，UE检测得到其处于宏基站的覆盖区域内，周围没有任何小基站，则可确定UE所属基站为宏基站，UE在进行小区重选时，设置单元32可将用来进行小区重选的小区重选阈值Threshx-low设为宏基站覆盖对应的小区重选阈值Threshx-low，即默认小区重选阈值Threshx-low。假设在T2时刻，UE 检测得到其处于小基站1的覆盖区域内(即UE所属小基站为小基站1)，确定单元31根据宏基站的广播信息确定小基站1为热点覆盖小基站，则UE在进行小区重选时，设置单元32可将用来进行小区重选的小区阈值Threshx-low设定为热点覆盖小基站对应的小区重选阈值Threshx-low_pico_boost。由于Threshx-low_pico_boost取值较大，UE与热点覆盖小基站之间的链路信号强度不可能高于Threshx-low_pico_boost，因此根据前面描述的小区重选准则，UE将继续选择当前服务的宏基站进行驻留。假设在T3时刻，UE检测得到其处于小基站2的覆盖区域内(即UE所属小基站为小基站2)，确定单元31根据宏基站的广播信息确定小基站2为盲点覆盖小基站，则UE在进行小区重选时，设置单元32可将用来进行小区重选的小区阈值Threshx-low设定为盲点覆盖小基站对应的小区重选阈值Threshx-low_pico_dc。由于Threshx-low_pico_dc取值较小，UE与盲点覆盖小基站之间的链路信号强度很容易高于Threshx-low_pico_dc，因此根据前面描述的小区重选准则，UE将迅速选择盲点覆盖小基站进行驻留。可保证在进行小区重选时不会选择热点覆盖小基站进行驻留，而是选择盲点覆盖小基站或者邻小区的宏基站进行驻留，进而可减少MME发送寻呼信令的对象数量即，MME只给宏基站和盲点覆盖小基站发送寻呼信令，热点覆盖小基站不发送寻呼信令，减少MME发送寻呼信令给核心网和接入网带来的信令负担。
在一些可行的实施方式中，设置单元32设定了UE用来进行小区重选的小区重选阈值之后，处理单元33则可根据设置单元32设定的第一小区重选阈值或者第二小区重选阈值进行小区重选和驻留。具体实现中，上述UE根据宏基站广播的各个小基站的类型设定小区重选阈值，并根据新设置的小区重选阈值进行小区重选和驻留的具体实现过程可参见上述第一实施例和第二实施例中各个步骤所描述的实现方式，在此不再赘述。
在本发明实施例中，UE可根据宏基站发送的信令确定各个小基站的类型，以及不同类型的小基站的小区重选阈值，在进行小区重选时可根据所处小基站的类型重选设置小区重选阈值，进而可更多地选择盲点覆盖小基站或者邻小区宏基站进行驻留，可减少MME发送寻呼信令的接收对象，减少MME发送寻呼信令给核心网和接入网带来的信令负担。
参见图11，是本发明实施例提供的MME的实施例结构示意图。本发明实 施例中所描述的MME，包括：至少一个输入设备1001；至少一个输出设备1002；至少一个处理器1003，例如CPU；和存储器1004，上述输入设备1001、输出设备1002、处理器1003和存储器1004通过总线1005连接。
上述存储器1004可以是高速RAM存储器，也可为非不稳定的存储器(non-volatile memory)，例如磁盘存储器。上述存储器1004用于存储一组程序代码，上述输入设备1001、输出设备1002和处理器1003用于调用存储器1004中存储的程序代码，执行如下操作：
上述输入设备1001，用于接收宏基站发送的信令。
上述处理器1003，用于根据宏基站发送的信令确定与所述宏基站连接的第一类型的小基站和第二类型的小基。
上述处理器1003，还用于在输入设备1001接收到寻呼请求时，根据所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值，确定目标小区重选阈值对应的目标小基站，其中，所述第一小区重选阈值和第二小区重选阈值不相同。
上述输出设备1002，用于向所述宏基站和所述目标小基站发送寻呼信令，以触发所述宏基站和所述目标小基站向各自覆盖区域的用户设备UE广播寻呼信令。
在一些可行的实施方式中，上述处理器1003具体用于：
对所述宏基站发送的信令进行解析，获取所述信令中携带的与所述宏基站连接的各个小基站的类型的标识信息，并根据所述标识信息确定各个所述小基站的类型，所述小基站中包括第一类型的小基站和第二类型的小基站；
其中，所述第一类型的小基站为热点覆盖小基站，所述第二类型的小基站为盲点覆盖小基站。
在一些可行的实施方式中，上述处理器1003还用于：
对所述宏基站发送的信令进行解析，从所述信令中获取所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值。
在一些可行的实施方式中，上述处理器1003具体用于：
根据所述宏基站发送的信令确定与所述宏基站连接的至少两种类型的小 基站，并根据各个所述小基站的业务量或者负载确定各个所述小基站的类型，所述小基站中包括第一类型的小基站和第二类型的小基站；
其中，所述第一类型的小基站为热点覆盖小基站，所述第二类型的小基站为盲点覆盖小基站。
在一些可行的实施方式中，上述处理器1003还用于：
设定第一类型的小基站对应的第一小区重选阈值和第二类型的小基站对应的第二小区重选阈值。
在一些可行的实施方式中，所述第一小区重选阈值和所述第二小区重选阈值不相同，包括：所述第二小区重选阈值小于所述第一小区重选阈值。
具体实现中，本发明实施例中所描述的MME中包含的输入设备1001、输出设备1002和处理器1003可执行本发明实施例提供的在密集小基站部署场景下的寻呼方法的第一实施例中各个步骤所描述的实现方式，具体实现过程可参见上述实施例，在此不再赘述。
参见图12，是本发明实施例提供的宏基站的实施例结构示意图。本发明实施例中所描述的宏基站，包括：至少一个输入设备2001；至少一个输出设备2002；至少一个处理器2003，例如CPU；和存储器2004，上述输入设备2001、输出设备2002、处理器2003和存储器2004通过总线2005连接。
上述存储器2004可以是高速RAM存储器，也可为非不稳定的存储器(non-volatile memory)，例如磁盘存储器。上述存储器2004用于存储一组程序代码，上述输入设备2001、输出设备2002和处理器2003用于调用存储器2004中存储的程序代码，执行如下操作：
上述输入设备1001，用于接收宏基站覆盖区域中包含的各个小基站发送的信令。
上述处理器1003，用于根据输入设备1001接收到的各个所述小基站发送的信令中携带的标识信息确定各个所述小基站的类型，所述小基站中包含第一类型的小基站和第二类型的小基站。
上述输出设备1002，用于向MME发送信令，所述信令中携带所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二 小区重选阈值，以触发所述MME在接收到寻呼请求时向各个所述小基站中包含的目标小区重选阈值对应的目标小基站发送寻呼信令，其中，所述第一小区重选阈值和第二小区重选阈值不相同。
上述输入设备1001，还用于接收MME发送的寻呼信令。
上述输出设备1002，还用于在输入设备1001接收到所述MME发送的寻呼信令时，向其覆盖区域的用户设备UE广播所述寻呼信令。
在一些可行的实施方式中，上述输出设备1002还用于：
通过广播信息告知宏基站覆盖区域包含的UE所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值，以触发各个所述小基站的覆盖区域中包含的UE根据所述小基站对应的小区重选阈值进行小区重选。
在一些可行的实施方式中，所述第一类型的小基站为：热点覆盖小基站，所述第二类型的小基站为盲点覆盖小基站；
所述第一小区重选阈值和所述第二小区重选阈值不相同，包括：所述第二小区重选阈值小于所述第一小区重选阈值。
具体实现中，本发明实施例中所描述的宏基站中包含的输入设备2001、输出设备2002和处理器2003可执行本发明实施例提供的在密集小基站部署场景下的寻呼方法的第二实施例中各个步骤所描述的实现方式，具体实现过程可参见上述实施例，在此不再赘述。
参见图13，是本发明实施例提供的UE的实施例结构示意图。本发明实施例中所描述的UE，包括：至少一个输入设备3001；至少一个输出设备3002；至少一个处理器3003，例如CPU；和存储器3004，上述输入设备3001、输出设备3002、处理器3003和存储器3004通过总线3005连接。
上述存储器3004可以是高速RAM存储器，也可为非不稳定的存储器(non-volatile memory)，例如磁盘存储器。上述存储器3004用于存储一组程序代码，上述输入设备3001、输出设备3002和处理器3003用于调用存储器3004中存储的程序代码，执行如下操作：
上述输入设备1001，用于接收宏基站发送的信令。
上述处理器1003，用于根据所述信令确定与所述宏基站连接的第一类型的小基站和第二类型的小基站，以及所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值，其中，所述第一小区重选阈值和第二小区重选阈值不相同。
上述处理器1003，还用于在UE进行小区重选时，根据其所属小基站的类型将用来进行小区重选的小区重选阈值设定为所述第一类型的小基站对应的第一小区重选阈值或者所述第二类型的小基站对应的第二小区重选阈值。
上述处理器1003，还用于根据所述第一小区重选阈值或者所述第二小区重选阈值进行小区重选和驻留。
具体实现中，本发明实施例中所描述的UE中包含的输入设备3001、输出设备3002和处理器3003可执行本发明实施例提供的在密集小基站部署场景下的寻呼方法的第三实施例中各个步骤所描述的实现方式，具体实现过程可参见上述实施例，在此不再赘述。
参见图14，是本发明实施例提供的在密集小基站部署场景下的寻呼系统的实施例结构示意图。本发明实施例中所描述的系统包括：MME、宏基站、用户设备和小基站等终端设备，其中上述各个终端设备协作用于实现在密集小基站部署场景下的寻呼方法，其具体实现过程可参见上述各个实施例，在此不再赘述。
本发明所有实施例中的单元(或者模块)或子单元(或者子模块)，可以通过通用集成电路，例如CPU(Central Processing Unit，中央处理器)，或通过ASIC(Application Specific Integrated Circuit，专用集成电路)来实现。
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-Only Memory，ROM)或随机存储记忆体(Random Access Memory，RAM)等。
以上所揭露的仅为本发明较佳实施例而已，当然不能以此来限定本发明之权利范围，因此依本发明权利要求所作的等同变化，仍属本发明所涵盖的范围。

Claims (23)

  1. 一种在密集小基站部署场景下的寻呼方法，其特征在于，包括：
    移动管理实体MME根据宏基站发送的信令确定与所述宏基站连接的第一类型的小基站和第二类型的小基站；
    当所述MME接收到寻呼请求时，所述MME根据所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值，确定目标小区重选阈值对应的目标小基站，其中，所述第一小区重选阈值和第二小区重选阈值不相同；
    所述MME向所述宏基站和所述目标小基站发送寻呼信令，以触发所述宏基站和所述目标小基站向各自覆盖区域的用户设备UE广播寻呼信令。
  2. 如权利要求1所述的方法，其特征在于，所述MME根据宏基站发送的信令确定与所述宏基站连接的第一类型的小基站和第二类型的小基站，包括：
    所述MME对所述宏基站发送的信令进行解析，获取所述信令中携带的与所述宏基站连接的各个小基站的类型的标识信息；
    根据所述标识信息确定各个所述小基站的类型，所述小基站中包括第一类型的小基站和第二类型的小基站；
    其中，所述第一类型的小基站为热点覆盖小基站，所述第二类型的小基站为盲点覆盖小基站。
  3. 如权利要求2所述的方法，其特征在于，所述MME根据所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值之前，所述方法还包括：
    所述MME对所述宏基站发送的信令进行解析，从所述信令中获取所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值。
  4. 如权利要求1所述的方法，其特征在于，所述MME根据宏基站发送 的信令确定与所述宏基站连接的第一类型的小基站和第二类型的小基站，包括：
    所述MME根据所述宏基站发送的信令确定与所述宏基站连接的至少两种类型的小基站；
    所述MME根据各个所述小基站的业务量或者负载确定各个所述小基站的类型，所述小基站中包括第一类型的小基站和第二类型的小基站；
    其中，所述第一类型的小基站为热点覆盖小基站，所述第二类型的小基站为盲点覆盖小基站。
  5. 如权利要求4所述的方法，其特征在于，所述MME根据各个所述小基站的业务量或者负载确定第一类型的小基站和第二类型的小基站之后，所述方法还包括：
    所述MME设定第一类型的小基站对应的第一小区重选阈值和第二类型的小基站对应的第二小区重选阈值。
  6. 如权利要求1-5任一项所述的方法，其特征在于，所述第一小区重选阈值和所述第二小区重选阈值不相同，包括：所述第二小区重选阈值小于所述第一小区重选阈值。
  7. 一种在密集小基站部署场景下的寻呼方法，其特征在于，包括：
    宏基站接收其覆盖区域中包含的各个小基站发送的信令；
    所述宏基站根据各个所述小基站发送的信令中携带的标识信息确定各个所述小基站的类型，所述小基站中包含第一类型的小基站和第二类型的小基站；
    所述宏基站向移动管理实体MME发送信令，所述信令中携带所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值，以触发所述MME在接收到寻呼请求时向各个所述小基站中包含的目标小区重选阈值对应的目标小基站发送寻呼信令，其中，所述第一小区重选阈值和第二小区重选阈值不相同；
    当接收到所述MME发送的寻呼信令时，所述宏基站向其覆盖区域的用户设备UE广播所述寻呼信令。
  8. 如权利要求7所述的方法，其特征在于，所述宏基站向移动管理实体MME发送信令之后，所述方法还包括：
    所述宏基站通过广播信息告知其覆盖区域包含的UE所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值，以触发各个所述小基站的覆盖区域中包含的UE根据所述小基站对应的小区重选阈值进行小区重选。
  9. 如权利要求7或8所述的方法，其特征在于，所述第一类型的小基站为：热点覆盖小基站，所述第二类型的小基站为盲点覆盖小基站；
    所述第一小区重选阈值和所述第二小区重选阈值不相同，包括：所述第二小区重选阈值小于所述第一小区重选阈值。
  10. 一种在密集小基站部署场景下的寻呼方法，其特征在于，包括：
    用户设备UE接收宏基站发送的信令，根据所述信令确定与所述宏基站连接的第一类型的小基站和第二类型的小基站，以及所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值，其中，所述第一小区重选阈值和第二小区重选阈值不相同；
    当所述UE进行小区重选时，所述UE根据其所属小基站的类型将用来进行小区重选的小区重选阈值设定为所述第一类型的小基站对应的第一小区重选阈值或者所述第二类型的小基站对应的第二小区重选阈值；
    所述UE根据所述第一小区重选阈值或者所述第二小区重选阈值进行小区重选和驻留。
  11. 如权利要求10所述的方法，其特征在于，所述第一类型的小基站为：热点覆盖小基站，所述第二类型的小基站为盲点覆盖小基站；
    所述第一小区重选阈值和所述第二小区重选阈值不相同，包括：所述第二小区重选阈值小于所述第一小区重选阈值。
  12. 一种在密集小基站部署场景下的寻呼装置，其特征在于，包括：
    确定单元，用于根据宏基站发送的信令确定与所述宏基站连接的第一类型的小基站和第二类型的小基站；
    所述确定单元，还用于在接收到寻呼请求时，根据所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值，确定目标小区重选阈值对应的目标小基站，其中，所述第一小区重选阈值和第二小区重选阈值不相同；
    寻呼单元，用于向所述宏基站和所述目标小基站发送寻呼信令，以触发所述宏基站和所述目标小基站向各自覆盖区域的用户设备UE广播寻呼信令。
  13. 如权利要求12所述的装置，其特征在于，所述确定单元具体用于：
    对所述宏基站发送的信令进行解析，获取所述信令中携带的与所述宏基站连接的各个小基站的类型的标识信息，并根据所述标识信息确定各个所述小基站的类型，所述小基站中包括第一类型的小基站和第二类型的小基站；
    其中，所述第一类型的小基站为热点覆盖小基站，所述第二类型的小基站为盲点覆盖小基站。
  14. 如权利要求13所述的装置，其特征在于，所述装置还包括：
    获取单元，用于对所述宏基站发送的信令进行解析，从所述信令中获取所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值。
  15. 如权利要求12所述的装置，其特征在于，所述确定单元具体用于：
    根据所述宏基站发送的信令确定与所述宏基站连接的至少两种类型的小基站，并根据各个所述小基站的业务量或者负载确定各个所述小基站的类型，所述小基站中包括第一类型的小基站和第二类型的小基站；
    其中，所述第一类型的小基站为热点覆盖小基站，所述第二类型的小基站为盲点覆盖小基站。
  16. 如权利要求15所述的装置，其特征在于，所述装置还包括：
    设置单元，用于设定第一类型的小基站对应的第一小区重选阈值和第二类型的小基站对应的第二小区重选阈值。
  17. 如权利要求12-16任一项所述的装置，其特征在于，所述第一小区重选阈值和所述第二小区重选阈值不相同，包括：所述第二小区重选阈值小于所述第一小区重选阈值。
  18. 一种在密集小基站部署场景下的寻呼装置，其特征在于，包括：
    接收单元，用于接收宏基站覆盖区域中包含的各个小基站发送的信令；
    确定单元，用于根据所述接收单元接收的各个所述小基站发送的信令中携带的标识信息确定各个所述小基站的类型，所述小基站中包含第一类型的小基站和第二类型的小基站；
    发送单元，用于向移动管理实体MME发送信令，所述信令中携带所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值，以触发所述MME在接收到寻呼请求时向各个所述小基站中包含的目标小区重选阈值对应的目标小基站发送寻呼信令，其中，所述第一小区重选阈值和第二小区重选阈值不相同；
    广播单元，用于在接收到所述MME发送的寻呼信令时，向所述宏基站覆盖区域的用户设备UE广播所述寻呼信令。
  19. 如权利要求18所述的装置，其特征在于，所述广播单元还用于：
    通过广播信息告知所述宏基站覆盖区域包含的UE所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值，以触发各个所述小基站的覆盖区域中包含的UE根据所述小基站对应的小区重选阈值进行小区重选。
  20. 如权利要求18或者19所述的装置，其特征在于，所述第一类型的小基站为：热点覆盖小基站，所述第二类型的小基站为盲点覆盖小基站；
    所述第一小区重选阈值和所述第二小区重选阈值不相同，包括：所述第二小区重选阈值小于所述第一小区重选阈值。
  21. 一种在密集小基站部署场景下的寻呼装置，其特征在于，包括：
    接收单元，用于接收宏基站发送的信令；
    确定单元，用于根据接收单元接收的所述信令确定与所述宏基站连接的第一类型的小基站和第二类型的小基站，以及所述第一类型的小基站对应的第一小区重选阈值和所述第二类型的小基站对应的第二小区重选阈值，其中，所述第一小区重选阈值和第二小区重选阈值不相同；
    设置单元，用于当用户设备UE进行小区重选时，根据所述UE所属小基站的类型将所述UE用来进行小区重选的小区重选阈值设定为所述第一类型的小基站对应的第一小区重选阈值或者所述第二类型的小基站对应的第二小区重选阈值；
    处理单元，用于根据所述设置单元设定的所述第一小区重选阈值或者所述第二小区重选阈值进行小区重选和驻留。
  22. 如权利要求21所述的装置，其特征在于，所述第一类型的小基站为：热点覆盖小基站，所述第二类型的小基站为盲点覆盖小基站；
    所述第一小区重选阈值和所述第二小区重选阈值不相同，包括：所述第二小区重选阈值小于所述第一小区重选阈值。
  23. 一种在密集小基站部署场景下的寻呼系统，其特征在于，包括：如所述权利要求12-17任一项所述的装置、如所述权利要求18-20任一项所述的装置和如权利要求21和22所述的装置。
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