WO2016070387A1 - 一种小区选择及重选方法、装置 - Google Patents

一种小区选择及重选方法、装置 Download PDF

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Publication number
WO2016070387A1
WO2016070387A1 PCT/CN2014/090499 CN2014090499W WO2016070387A1 WO 2016070387 A1 WO2016070387 A1 WO 2016070387A1 CN 2014090499 W CN2014090499 W CN 2014090499W WO 2016070387 A1 WO2016070387 A1 WO 2016070387A1
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WIPO (PCT)
Prior art keywords
cell
neighboring
signal quality
neighboring cell
coverage level
Prior art date
Application number
PCT/CN2014/090499
Other languages
English (en)
French (fr)
Inventor
马慧
于映辉
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to CN201910111438.XA priority Critical patent/CN109756953A/zh
Priority to KR1020177015344A priority patent/KR101897528B1/ko
Priority to EP18204288.7A priority patent/EP3493602A1/en
Priority to EP14905378.7A priority patent/EP3209068B1/en
Priority to BR112017009498A priority patent/BR112017009498A2/pt
Priority to JP2017542227A priority patent/JP6538865B2/ja
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2014/090499 priority patent/WO2016070387A1/zh
Priority to MX2017006030A priority patent/MX2017006030A/es
Priority to CN201480030906.6A priority patent/CN105874851B/zh
Publication of WO2016070387A1 publication Critical patent/WO2016070387A1/zh
Priority to US15/588,109 priority patent/US10555323B2/en
Priority to US16/748,546 priority patent/US11246145B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a cell selection and reselection method and apparatus.
  • Machine to Machine or MTC (Machine Type Communication) refers to the transfer of information and data between machines and machines over a wireless network.
  • M2M Machine to Machine
  • MTC Machine Type Communication
  • the Internet of Things is widely used in many fields, including intelligent transportation, building control systems, home intelligent control systems, video surveillance systems, and industrial monitoring.
  • the Internet of Things industry is considered to be the fourth wave of the information industry following the computer, Internet and mobile communication networks. It is the development direction of the future network.
  • the typical network structure is shown in Figure 1.
  • M2M equipment such as sensors, meters, goods, etc. may be located in the corner, or the basement is poorly covered, and it is predicted that by 2022, the number of user terminals of this coverage type will reach 1.55 billion.
  • the coverage of the M2M network needs to be better than the current cellular network, so the M2M network coverage needs to be enhanced to 20 dB.
  • the cell coverage is extended by using a time domain spread spectrum method in a narrowband system.
  • a cell with an extended coverage area it may be called an extended coverage cell, and for a cell without an extended coverage area, It is called a normal cell.
  • the extended coverage cell does not need to be spread (referred to as 1X) for the area A is a common coverage area of the extended coverage area; the area B/C is an extended coverage area of the extended coverage area, and needs to use spread spectrum.
  • the spreading factor used by the area B/C is 8/64 (referred to as 8X and 64X).
  • a cell that needs to be selected by a user equipment (UE) may have both an extended coverage cell and a normal cell.
  • a measured cell that includes both an extended coverage cell and a normal cell is referred to as a multi-coverage cell.
  • a measured cell that includes only a normal cell is referred to as a single coverage level cell.
  • the cell where the area A and the area B are located is an extended coverage area, where the area A is a normal coverage area, and the area B is an extended coverage area, for example, the spreading ratio used by B is 8 (referred to as 8X).
  • the cell where the area C is located is a normal cell.
  • a method of spreading is needed, for example, the spreading ratio used by B is 8 (referred to as 8X), and the user terminal resides in the In the case of the area B, it is necessary to repeat the reception or measurement data 8 times.
  • the extended coverage cell may be directly selected, which causes data to be repeatedly received, resulting in waste of resources and power consumption. increase.
  • the embodiments of the present invention provide a cell selection and reselection method and device, which solves the problem that the existing cell selection and reselection methods in the prior art enable repeated data reception, resulting in waste of resources and increased power consumption.
  • an embodiment of the present invention provides a cell selection apparatus, where the apparatus includes:
  • An acquiring unit configured to measure a signal quality of the cell, and obtain a coverage level compensation value that is pre-configured by the network side for the cell;
  • a processing unit configured to select the target cell according to the signal quality of the cell measured by the acquiring unit and the coverage level compensation value of the acquired cell.
  • the processing unit is specifically configured to:
  • the cell is used as a cell that satisfies the coverage level cell selection condition, and the signal quality threshold of the cell is based on the minimum received signal threshold of the cell and the cell.
  • the coverage level compensation value is determined;
  • a cell that satisfies the coverage level cell selection condition is used as the target cell.
  • the processing unit specifically, the signal quality in the cell includes a reference of a cell
  • the cell that satisfies the coverage level cell selection condition is used as the target cell:
  • Q relevmeas represents the measured cell reference signal received power value
  • P compensation represents the cell reference signal received power threshold
  • Q relevmin represents the cell The minimum required reception level
  • Q rxlevminoffse represents the offset of Q relevmin
  • Q coverageclassoffset represents the pre-configured coverage level compensation value of the cell on the network side
  • P compensation represents (P EMAX -P PowerClass ) and the maximum value in 0,
  • P EMAX represents the maximum transmit power when the user terminal performs uplink transmission, and P PowerClass represents the maximum RF output power of the user terminal;
  • S qual represents the cell selection quality value
  • Q qualmeas represents the measured cell reference signal reception quality value
  • (Q qualmin +Q qualminoffset +Q coverageclassoffset ) represents the measured cell reference signal reception quality threshold
  • Q qualmin represents the minimum required by the cell
  • the quality level, Q qualminoffset represents the offset of Q qualmin
  • Q coverageclassoffset represents the pre-configured coverage level compensation value of the cell on the network side.
  • the acquiring unit is specifically used in The coverage level compensation value of the normal cell that is obtained when the cell includes the extended coverage cell with the extended coverage area and the normal cell where the extended coverage area does not exist is zero or is the default value.
  • the device further includes:
  • a determining unit configured to determine, before the acquiring unit acquires a coverage level compensation value that is pre-configured by the network side for the cell, the user terminal supports the extended coverage cell that resides in the extended coverage area.
  • an embodiment of the present invention provides a cell reselection apparatus, where the apparatus includes:
  • An acquiring unit configured to measure a signal quality of a camping cell and a neighboring cell of the camping cell, and obtain a coverage level compensation value pre-configured by the network side for the camping cell and the neighboring cell;
  • a processing unit configured to select a target cell from the neighboring cells according to the signal quality of the camped cell and the neighboring cell measured by the acquiring unit, and the acquired coverage level compensation value of the camped cell and the neighboring cell.
  • the processing unit is specifically configured to select a neighboring cell that meets a set condition from each neighboring cell;
  • the signal quality level of the neighboring cell is determined according to a signal quality of the neighboring cell and a coverage level compensation value of the neighboring cell, where a signal quality level of the camping cell is based on a signal quality of the camping cell and a camped cell Coverage level compensation value determination;
  • a neighboring cell that satisfies the coverage level cell reselection condition among the selected neighboring cells is used as the target cell.
  • the processing unit is configured to meet the following coverage level cell reselection condition in each selected cell The neighboring cell is used as the target cell.
  • R s Q meas,s +Q Hyst -Q coverageclassoffset,s ;
  • R n Q meas,n –Q offset -Q coverageclassoffset,n ;
  • R n represents a signal quality level of the neighboring cell
  • R s represents a signal quality level of the camped cell
  • Q meas, s represents the reference signal received power value in the signal quality of the camping cell
  • Q Hyst represents the hysteresis value of the reference signal received power value of the camping cell
  • Q coverage class offset indicates that the network side is the pre-configured coverage of the camped cell Level compensation value
  • Q meas, n represents the reference signal received power value in the signal quality of the neighboring cell
  • Q offset represents the offset value between the current camping cell and the neighboring cell where the user terminal is located
  • Q coverage class offset indicates that the network side is pre-configured for the neighboring cell. Coverage level compensation value.
  • the processing unit is specifically configured to:
  • a neighboring cell whose signal quality is greater than a signal quality threshold of the cell is selected from each neighboring cell, and the signal quality threshold of the cell is determined according to a minimum received signal threshold of the cell and a coverage level compensation value of the cell.
  • the device further includes:
  • the receiving unit before the acquiring unit measures the signal quality of the neighboring cell, and obtains the coverage level compensation value pre-configured by the neighboring cell, the neighboring cell list sent by the network side, where the neighboring cell list carries the neighboring cell identifier ;
  • the acquiring unit is specifically configured to measure a signal quality of a neighboring cell corresponding to each neighboring cell identifier carried in the neighboring cell list received by the receiving unit, and obtain a neighboring cell identifier carried in the neighboring cell list by the network side.
  • the pre-configured coverage level compensation values of the corresponding neighboring cells respectively.
  • the acquiring unit is further configured to acquire a network
  • the side is the reselection priority information configured by each neighboring cell, where the reselection priority of the extended coverage cell with the extended coverage area included in the neighboring cell is lower than the reselection priority of the normal cell without the extended coverage area;
  • the processing unit is specifically configured to: according to the signal quality of the camped cell and the neighboring cell measured by the acquiring unit, the acquired coverage level compensation value of the camped cell and the neighboring cell, and the reselection priority information of each neighboring cell, Selecting a target cell from the neighboring cells.
  • the processing unit is configured to determine that each of the neighboring cells includes a reselection priority higher than a current user terminal When the neighboring cell of the reselected priority of the camping cell is located, the neighboring cell that satisfies the coverage level cell selection condition is selected as the target cell from the determined neighboring cell, and the coverage level cell selection condition satisfies the signal quality of the neighboring cell is greater than the neighboring cell
  • the signal quality threshold of the cell where the signal quality threshold of the neighboring cell is based on the minimum received signal threshold of the neighboring cell and the coverage level compensation value of the neighboring cell definite;
  • the neighboring cell does not satisfy the coverage level cell selection condition or determines that the neighboring cell does not include the reselection priority higher than the camping cell where the user terminal is currently located.
  • the neighboring cell when determining that the signal quality of the camping cell is lower than the set threshold within a predetermined time interval, selecting from the neighboring cell whose reselection priority is not higher than the reselection priority of the camping cell a neighboring cell that satisfies the coverage level cell selection condition, and when the selected neighboring cell satisfies the coverage level cell reselection condition, the neighboring cell is used as the target cell;
  • the coverage level cell reselection condition is that the signal quality level of the neighboring cell is greater than the signal quality level of the camping cell in the specified time interval, wherein the signal quality level of the neighboring cell is compensated according to the signal quality of the neighboring cell and the coverage level of the neighboring cell.
  • the value determines that the signal quality level of the camped cell is determined according to the signal quality of the camped cell and the coverage level compensation value of the camped cell.
  • the processing unit specifically, the signal quality in the cell includes the reference signal receiving of the cell When the power value and the reference signal of the cell receive the quality value, and the neighboring cell whose signal quality is greater than the signal quality threshold of the cell is selected from each neighboring cell, the neighboring cell that satisfies the following coverage level cell selection condition is selected from each neighboring cell:
  • Q relevmeas represents the measured cell reference signal received power value
  • P compensation represents the cell reference signal received power threshold
  • Q relevmin represents the cell The minimum required reception level
  • Q rxlevminoffse represents the offset of Q relevmin
  • Q coverageclassoffset represents the pre-configured coverage level compensation value of each cell on the network side
  • P compensation represents (P EMAX -P PowerClass ) and the maximum value of 0,
  • P EMAX represents the maximum transmit power when the user terminal performs uplink transmission
  • P PowerClass represents the maximum RF output power of the user terminal;
  • S qual represents the cell selection quality value
  • Q qualmeas represents the measured cell reference signal reception quality value
  • (Q qualmin +Q qualminoffset +Q coverageclassoffset ) represents the measured cell reference signal reception quality threshold
  • Q qualmin represents the minimum required cell size
  • the quality level, Q qualminoffset represents the offset of Q qualmin
  • Q coverage class offset represents the pre-configured coverage level compensation value of each cell on the network side.
  • the acquiring unit is specifically used in The coverage level compensation value of each cell that includes the extended coverage cell with the extended coverage area and the normal cell where the extended coverage area does not exist is zero or is the default value.
  • the device further includes:
  • a determining unit configured to determine, before the acquiring unit acquires a coverage level compensation value pre-configured by the network side for the neighboring cell, that the user terminal supports the extended coverage cell that exists in the extended coverage area.
  • an embodiment of the present invention further provides a cell selection apparatus, where the apparatus includes:
  • a configuration unit configured to configure a coverage level compensation value for each cell
  • a sending unit configured to send, to the user terminal, a coverage level compensation value configured by the configuration unit for each cell, where the coverage level compensation value is used by the user terminal to perform cell selection/reselection.
  • an embodiment of the present invention provides a cell selection method, where the method includes:
  • the target cell is selected according to the measured signal quality of the cell and the acquired coverage level compensation value of each cell.
  • the target cell is selected according to the measured signal quality of the cell and the coverage level compensation value of the acquired cell, including:
  • the cell is used as the cell that satisfies the coverage level cell selection condition, and the signal quality threshold of the cell is determined according to the minimum received signal threshold of the cell and the coverage level compensation value of the cell;
  • the cell that satisfies the coverage level cell selection condition is used as the target cell.
  • the signal quality of the cell includes a reference signal received power of the cell and a cell reference signal received quality value
  • the coverage level cell selection condition satisfies the following formula:
  • Q relevmeas represents the measured cell reference signal received power value
  • P compensation represents the cell reference signal received power threshold
  • Q relevmin represents the cell The minimum required reception level
  • Q rxlevminoffse represents the offset of Q relevmin
  • Q coverageclassoffset represents the pre-configured coverage level compensation value of the cell on the network side
  • P compensation represents (P EMAX -P PowerClass ) and the maximum value in 0,
  • P EMAX represents the maximum transmit power when the user terminal performs uplink transmission, and P PowerClass represents the maximum RF output power of the user terminal;
  • S qual represents the cell selection quality value
  • Q qualmeas represents the measured cell reference signal reception quality value
  • (Q qualmin +Q qualminoffset +Q coverageclassoffset ) represents the measured cell reference signal reception quality threshold
  • Q qualmin represents the minimum required by the cell
  • the quality level, Q qualminoffset represents the offset of Q qualmin
  • Q coverageclassoffset represents the pre-configured coverage level compensation value of the cell on the network side.
  • the cell includes an extension that has an extended coverage area If the coverage cell and the normal cell where the extended coverage area does not exist, the acquired coverage level of the normal cell is zero or a default value.
  • the pre-configured coverage of the cell is acquired on the acquiring network side.
  • the method further includes:
  • the user terminal supports an extended coverage cell that resides in the presence of an extended coverage area.
  • an embodiment of the present invention provides a cell reselection method, where the method includes:
  • the coverage level compensation value of the area, and the target cell is selected from the neighboring cells.
  • a target cell in the neighboring cell including:
  • the signal quality level of the neighboring cell is determined according to a signal quality of the neighboring cell and a coverage level compensation value of the neighboring cell, where a signal quality level of the camping cell is based on a signal quality of the camping cell and a camped cell Coverage level compensation value determination;
  • a neighboring cell that satisfies the coverage level cell reselection condition among the selected neighboring cells is used as the target cell.
  • the coverage level cell reselection condition satisfies the following formula:
  • R s Q meas,s +Q Hyst -Q coverageclassoffset,s ;
  • R n Q meas,n –Q offset -Q coverageclassoffset,n ;
  • R n represents a signal quality level of the neighboring cell
  • R s represents a signal quality level of the camped cell
  • Q meas, s represents the reference signal received power value in the signal quality of the camping cell
  • Q Hyst represents the hysteresis value of the reference signal received power value of the camping cell
  • Q coverage class offset indicates that the network side is the pre-configured coverage of the camped cell Level compensation value
  • Q meas, n represents the reference signal received power value in the signal quality of the neighboring cell
  • Q offset represents the offset value between the current camping cell and the neighboring cell where the user terminal is located
  • Q coverage class offset indicates that the network side is pre-configured for the neighboring cell. Coverage level compensation value.
  • selecting a neighboring cell that meets the set condition from each neighboring cell includes:
  • a neighboring cell whose signal quality is greater than a signal quality threshold of the cell is selected from each neighboring cell, and the signal quality threshold of the cell is determined according to a minimum received signal threshold of the cell and a coverage level compensation value of the cell.
  • the method further includes:
  • the signal quality of the neighboring cell is measured, and the coverage level compensation value pre-configured by the neighboring cell on the network side is obtained, which specifically includes:
  • the method further includes:
  • the target cell is selected from the neighboring cell, and specifically includes:
  • the coverage level cell selection condition is that the signal quality of the neighboring cell is greater than the signal quality threshold of the neighboring cell, and the signal quality threshold of the neighboring cell is determined according to the minimum received signal threshold of the neighboring cell and the coverage level compensation value of the neighboring cell;
  • the neighboring cell does not satisfy the coverage level cell selection condition or determines that the neighboring cell does not include the reselection priority higher than the camping cell where the user terminal is currently located.
  • the neighboring cell when determining that the signal quality of the camping cell is lower than the set threshold within a predetermined time interval, selecting from the neighboring cell whose reselection priority is not higher than the reselection priority of the camping cell a neighboring cell that satisfies the coverage level cell selection condition, and when the selected neighboring cell satisfies the coverage level cell reselection condition, the neighboring cell is used as the target cell;
  • the coverage level cell reselection condition is that the signal quality level of the neighboring cell is greater than the signal quality level of the camping cell in the specified time interval, wherein the signal quality level of the neighboring cell is compensated according to the signal quality of the neighboring cell and the coverage level of the neighboring cell.
  • the value determines that the signal quality level of the camped cell is determined according to the signal quality of the camped cell and the coverage level compensation value of the camped cell.
  • the signal quality of the cell includes: a reference signal received power value of the cell and a reference of the cell
  • the signal receiving quality value, the neighboring cell that selects a signal quality that is greater than a signal quality threshold of the cell from each neighboring cell includes:
  • Q relevmeas represents the measured cell reference signal received power value
  • P compensation represents the cell reference signal received power threshold
  • Q relevmin represents the cell The minimum required reception level
  • Q rxlevminoffse represents the offset of Q relevmin
  • Q coverageclassoffset represents the pre-configured coverage level compensation value of each cell on the network side
  • P compensation represents (P EMAX -P PowerClass ) and the maximum value in 0,
  • P EMAX represents the maximum transmit power when the user terminal performs uplink transmission, and P PowerClass represents the maximum RF output power of the user terminal;
  • S qual represents the cell selection quality value
  • Q qualmeas represents the measured cell reference signal reception quality value
  • (Q qualmin +Q qualminoffset +Q coverageclassoffset ) represents the measured cell reference signal reception quality threshold
  • Q qualmin represents the minimum required by the cell
  • the quality level, Q qualminoffset represents the offset of Q qualmin
  • Q coverage class offset represents the pre-configured coverage level compensation value of each cell on the network side.
  • the each of the cells includes an extended coverage area If the coverage area of the coverage area and the normal area where the extended coverage area does not exist, the obtained network side is a normal area pre-configured coverage level compensation value of zero or a default value.
  • the method further includes:
  • the user terminal supports an extended coverage cell that resides in the presence of an extended coverage area.
  • an embodiment of the present invention provides a cell selection method, where the method includes:
  • the coverage level compensation value configured for each cell is sent to the user terminal, and the coverage level compensation value is used by the user terminal for cell selection/reselection.
  • the coverage level compensation value is pre-configured for each cell by the network side, and the user terminal compensates for the coverage level of each neighboring cell according to the measured coverage level compensation value of each cell and the acquired network side. Value, select the target cell from each neighboring cell.
  • the coverage level compensation value pre-configured for each cell by the network side can ensure that the cell with better signal quality is camped when the user terminal consumes relatively low power.
  • FIG. 1 is a structural diagram of an M2M network provided by the prior art
  • FIG. 3 is a schematic diagram of a multi-coverage level cell provided by the prior art
  • FIG. 4 is a schematic diagram of a cell selection apparatus according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a cell reselection apparatus according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of another cell selection apparatus according to an embodiment of the present invention.
  • FIG. 7 is a flowchart of a cell selection method according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of a cell reselection method according to an embodiment of the present invention.
  • FIG. 9 is a flowchart of another cell selection method according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of still another cell selection apparatus according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of another cell reselection apparatus according to an embodiment of the present invention.
  • GSM Global System for Mobile communications
  • Code Division Multiple Access Code Division Multiple Access
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access Wireless
  • FDMA Frequency Division Multiple Addressing
  • OFDMA orthogonal frequency Orthogonal Frequency-Division Multiple Access
  • SC-FDMA single carrier FDMA
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • extended coverage cell described herein refers to a cell in which an extended coverage area exists, which is normally small.
  • a zone refers to a cell where there is no extended coverage area.
  • the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • a cell selection and reselection method and a cell selection and reselection device are provided.
  • the method and device are based on the same inventive concept, and the method and the device are similar in principle, so the device and the method are Implementation can refer to each other, and the repetitions are not repeated here.
  • a method and a device for performing cell selection and reselection for a multi-coverage level cell are provided.
  • the coverage level compensation value is pre-configured for each cell by the network side, and the user terminal compensates the coverage level according to the measured coverage level of each cell. And obtaining, by the network side, a coverage level compensation value pre-configured for each neighboring cell, and selecting a target cell from each neighboring cell.
  • the coverage level compensation value pre-configured for each cell by the network side can ensure that the cell with better signal quality is camped when the user terminal consumes relatively low power.
  • the UE When the UE links to the network, it first selects a Public Land Mobile Network (PLMN). The UE performs a cell search in the selected PLMN, and after searching for a cell, selects a cell to camp. After the UE camps on the UE, the UE monitors the current camped cell and the neighboring cell of the camped cell according to the neighbor cell measurement rule and the cell reselection rule, and reselects a cell with good signal quality.
  • PLMN Public Land Mobile Network
  • An embodiment of the present invention provides a cell selection device. As shown in FIG. 4, the device is disposed on a user terminal side, and the device includes:
  • the obtaining unit 401 is configured to measure a signal quality of the cell, and acquire a coverage level compensation value that is pre-configured by the network side.
  • the processing unit 402 is configured to select a target cell according to the signal quality of the cell measured by the acquiring unit 401 and the coverage level compensation value of the acquired cell.
  • the coverage level compensation value is pre-configured for each cell by the network side, and the processing unit 402 of the user terminal uses the coverage level compensation value of each cell measured by the obtaining unit 401 and the acquired network side as each neighbor.
  • the pre-configured coverage level compensation value of the cell selects a target cell from each neighboring cell.
  • the coverage level compensation value pre-configured for each cell by the network side can ensure that the cell with better signal quality is selected when the user terminal consumes relatively low power. stay.
  • the acquiring, by the acquiring unit 401, the signal quality of the cell may be performed before the acquisition of the coverage level compensation value pre-configured by the network side, or after acquiring the coverage level compensation value of the cell pre-configured by the network side,
  • the embodiment of the invention is not specifically limited thereto.
  • the coverage level compensation value that is pre-configured by the network on the network side may be configured according to the bearer service, load, and the like of the cell when the network planning network is optimized.
  • the above-mentioned cell may include both an extended coverage cell in which an extended coverage area exists and a normal cell in which an extended coverage area does not exist, and may also include only a normal cell.
  • the network side may perform pre-configuration of the coverage level compensation value only for the extended coverage cell, and no coverage level compensation value is configured for the normal cell, that is, the coverage level compensation value configured for the normal cell is a default value.
  • the coverage level compensation value pre-configured for the normal cell is also zero.
  • the acquiring unit 401 is specifically configured to: when the cell includes an extended coverage cell with an extended coverage area and a normal cell without an extended coverage area, the coverage level compensation value of the normal cell is zero or a default value.
  • processing unit 402 is specifically configured to:
  • the cell is regarded as a cell that satisfies the coverage level cell selection condition, and the signal quality threshold of the cell is based on the minimum received signal threshold of the cell and the The coverage level compensation value of the cell is determined;
  • a cell that satisfies the coverage level cell selection condition is used as the target cell.
  • the processing unit 402 may directly camp on the cell without determining the other cell.
  • the signal quality of the measured cell may include a Reference Signal Receiving Power (RSRP) of the reference signal of the cell and a Reference Signal Receiving Quality (RSRQ) of the cell.
  • the signal quality threshold of the cell then includes a power threshold for the RSRP of the cell, and a quality threshold for the RSRQ of the cell, the minimum received signal quality threshold including the minimum reception level required by the cell and the minimum quality level required by the cell.
  • the measured signal quality of the cell may also include only the reference signal received power value of the cell.
  • the signal quality threshold of the cell then includes a power threshold for the RSRP of the cell.
  • the cell RSRP value is greater than the cell power threshold, or the cell RSRP value is greater than the cell power threshold and the RSRQ value of the cell is greater than the cell quality threshold.
  • the reference signal received power threshold of the cell is determined according to the minimum receiving level required by the cell and the coverage level compensation value of the cell, and the reference signal receiving quality threshold of the cell is compensated according to the minimum quality level required by the cell and the coverage level of the cell. The value is determined.
  • the processing unit 402 is specifically configured to use, as the target cell, a cell that satisfies the following coverage level cell selection condition:
  • Q relevmeas represents the measured cell reference signal received power value
  • P compensation represents the cell reference signal received power threshold
  • Q relevmin represents the cell The minimum required reception level
  • Q rxlevminoffse represents the offset of Q relevmin
  • Q coverageclassoffset represents the pre-configured coverage level compensation value of the cell on the network side
  • P compensation represents (P EMAX -P PowerClass ) and the maximum value in 0,
  • P EMAX represents the maximum transmit power when the user terminal performs uplink transmission, and P PowerClass represents the maximum RF output power of the user terminal;
  • S qual represents the cell selection quality value
  • Q qualmeas represents the measured cell reference signal reception quality value
  • (Q qualmin +Q qualminoffset +Q coverageclassoffset ) represents the measured cell reference signal reception quality threshold
  • Q qualmin represents the minimum required by the cell
  • the quality level, Q qualminoffset represents the offset of Q qualmin
  • Q coverageclassoffset represents the pre-configured coverage level compensation value of the cell on the network side.
  • the apparatus further includes:
  • a determining unit configured to determine, before the acquiring unit 401 acquires a coverage level compensation value that is pre-configured by the network side for the cell, the user terminal supports the extended coverage cell that resides in the extended coverage area.
  • the determining unit determines that the user terminal supports the camping extended coverage cell, and then the processing unit 402 subsequently selects the cell that satisfies the coverage level cell selection condition. As the target cell.
  • the obtaining unit 401 may measure the signal quality of each cell, and the processing unit 402 may subsequently select the target cell by using the cell selection condition (S criterion) provided by the prior art.
  • the embodiment of the invention further provides a cell reselection device. As shown in FIG. 5, the device includes:
  • the acquiring unit 501 is configured to measure signal quality of the camping cell where the user terminal is currently located and the neighboring cell of the camping cell, and obtain a coverage level compensation value pre-configured by the network side for the camping cell and the neighboring cell;
  • the acquiring unit 501 is specifically configured to: when the respective cells include an extended coverage cell with an extended coverage area and a normal cell where the extended coverage area does not exist, a coverage level compensation value of the normal cell is zero or The default value.
  • the processing unit 502 is configured to select a target cell from the neighboring cells according to the signal quality of the camped cell and the neighboring cell measured by the acquiring unit 501, and the acquired coverage level compensation value of the camped cell and the neighboring cell.
  • the coverage level compensation value is pre-configured for each cell by the network side, and the processing unit 502 of the user terminal according to the signal quality of the camped cell and the neighboring cell measured by the obtaining unit 501, and the acquired station A coverage level compensation value of the neighboring cell and the neighboring cell, and selecting a target cell from the neighboring cells.
  • the coverage level compensation value pre-configured for each cell by the network side can ensure that the cell with better signal quality is camped when the user terminal consumes relatively low power.
  • the processing unit 502 is specifically configured to select, from each neighboring cell, a neighboring cell that meets the set condition;
  • the signal quality level of the neighboring cell is determined according to a signal quality of the neighboring cell and a coverage level compensation value of the neighboring cell, where a signal quality level of the camping cell is based on a signal quality of the camping cell and a camped cell Coverage level compensation value determination;
  • a neighboring cell that satisfies the coverage level cell reselection condition among the selected neighboring cells is targeted Community.
  • the processing unit 502 when using the determined neighboring cell that satisfies the coverage level cell reselection condition as the target cell, may sort the signal quality levels of the neighboring cells that satisfy the coverage level reselection condition, and select the neighbor with the highest signal quality level.
  • the cell serves as a target cell.
  • the processing unit 502 is specifically configured to use, as the target cell, a neighboring cell that meets the following coverage level cell reselection condition in each selected cell.
  • R s Q meas,s +Q Hyst -Q coverageclassoffset,s ;
  • R n Q meas,n –Q offset -Q coverageclassoffset,n ;
  • R n represents a signal quality level of the neighboring cell
  • R s represents a signal quality level of the camped cell
  • Q meas, s represents the reference signal received power value in the signal quality of the camping cell
  • Q Hyst represents the hysteresis value of the reference signal received power value of the camping cell
  • Q coverage class offset indicates that the network side is the pre-configured coverage of the camped cell Level compensation value
  • Q meas, n represents the reference signal received power value in the signal quality of the neighboring cell
  • Q offset represents the offset value between the current camping cell and the neighboring cell where the user terminal is located
  • Q coverage class offset indicates that the network side is pre-configured for the neighboring cell. Coverage level compensation value.
  • the processing unit 502 selects a neighboring cell that meets the set condition from each neighboring cell, and specifically implements the following manner:
  • the processing unit 502 selects, from each neighboring cell, a neighboring cell whose signal quality is greater than a minimum received signal threshold of the cell.
  • the cell selection condition (ie, the S criterion) may also be implemented by referring to the description of the S criterion in the foregoing cell selection method, and details are not described herein again.
  • the processing unit 502 selects, from each neighboring cell, a neighboring cell whose signal quality is greater than a signal quality threshold of the cell, where the signal quality threshold of the cell is based on a minimum received signal threshold of the cell and a coverage level of the cell.
  • the compensation value is determined.
  • the device further includes:
  • the acquiring unit 501 measures the signal quality of the neighboring cell, and acquires the network side Before the coverage level compensation value pre-configured by the neighboring cell, the neighboring cell list sent by the network side is received, where the neighboring cell list carries the neighboring cell identifier;
  • the acquiring unit 501 is specifically configured to measure a signal quality of a neighboring cell corresponding to each neighboring cell identifier carried in the received neighboring cell list, and obtain a corresponding corresponding to each neighboring cell identifier carried in the neighboring cell list by the network side.
  • the pre-configured coverage level compensation value of the neighboring cell is specifically configured to measure a signal quality of a neighboring cell corresponding to each neighboring cell identifier carried in the received neighboring cell list, and obtain a corresponding corresponding to each neighboring cell identifier carried in the neighboring cell list by the network side.
  • the acquiring unit 501 is further configured to acquire reselection priority information configured by the network side for each neighboring cell, where the extended coverage area included in the neighboring cell exists.
  • the reselection priority of the extended coverage cell is lower than the reselection priority of the normal cell where the extended coverage area does not exist;
  • the processing unit 502 is specifically configured to: according to the signal quality of the camped cell and the neighboring cell measured by the acquiring unit 501, the acquired coverage level compensation value of the camped cell and the neighboring cell, and the reselection priority of each neighboring cell. Information, selecting a target cell from the neighboring cells.
  • the user terminal may also use the reselection priority of the cell as a selection parameter of the selected target cell.
  • the manner in which the obtaining unit 501 acquires the reselection priority of the neighboring cell may be one of the following:
  • the first implementation manner is: for the reselection priority of the neighboring cell, the network side may send the message to the user terminal by using a broadcast message.
  • the parameter is determined by the parameter cellReselectionPriority, and is sent to the user terminal by using a system information broadcast system information block (SIB), so that the acquiring unit 501 of the user terminal receives the reselection priority information of the neighboring cell, and the processing unit 502 is configured according to The neighboring cell reselection priority information acquired by the obtaining unit 501 selects the target cell.
  • SIB system information broadcast system information block
  • the network side configures a reselection priority for each neighboring cell, and when the user terminal releases the radio resource, the radio resource control (Radio Resource Control abbreviated as RRC) release connection message is sent to the user terminal, so that the acquiring unit 501 of the user terminal receives the neighboring cell.
  • RRC Radio Resource Control abbreviated as RRC
  • the reselection priority information may be carried in the network side to the user terminal.
  • the user terminal receives the reselection priority information of the neighboring cell, and the processing unit 502 selects the target cell according to the reselection priority information of the neighboring cell acquired by the acquiring unit 501.
  • the obtaining unit 501 of the user terminal acquires reselection priority information configured for each neighboring cell by the network side in the foregoing manner, where the reselection priority of the extended coverage cell of the extended coverage area included in the neighboring cell is lower than that of the non-existent extended coverage The reselection priority of the normal cell of the area. Then, the processing unit 502 of the user terminal selects the target cell according to the measured signal quality of the camped cell and the neighboring cell, the acquired coverage level compensation value of the camped cell and the neighboring cell, and the reselection priority information of each neighboring cell.
  • the processing unit 502 is specifically configured to: when determining, in a neighboring cell, a neighboring cell that includes a reselection priority that is higher than a reselection priority of a camping cell where the user terminal is currently located, the selection is satisfied from the determined neighboring cell.
  • the neighboring cell that covers the level cell selection condition is used as the target cell, and the coverage level cell selection condition satisfies the signal quality of the neighboring cell is greater than the signal quality threshold of the neighboring cell, where the signal quality threshold of the neighboring cell is based on the minimum received signal threshold of the neighboring cell.
  • the coverage level compensation value of the neighboring cell is determined;
  • the neighboring cell does not satisfy the coverage level cell selection condition or determines that the neighboring cell does not include the reselection priority higher than the camping cell where the user terminal is currently located.
  • the neighboring cell when determining that the signal quality of the camping cell is lower than the set threshold within a predetermined time interval, selecting from the neighboring cell whose reselection priority is not higher than the reselection priority of the camping cell a neighboring cell that satisfies the coverage level cell selection condition, and when the selected neighboring cell satisfies the coverage level cell reselection condition, the neighboring cell is used as the target cell;
  • the coverage level cell reselection condition is that the signal quality level of the neighboring cell is greater than the signal quality level of the camping cell in the specified time interval, wherein the signal quality level of the neighboring cell is compensated according to the signal quality of the neighboring cell and the coverage level of the neighboring cell.
  • the value determines that the signal quality level of the camped cell is determined according to the signal quality of the camped cell and the coverage level compensation value of the camped cell.
  • the cell reselection may be performed according to the cell reselection scheme provided in the prior art.
  • the pre-configured coverage level compensation value for the neighboring cell can also achieve the guaranteed user terminal. When the power consumption is relatively low, the cell with better signal quality is selected to camp.
  • the processing unit 502 is specifically configured to: the signal quality of the cell includes a reference signal received power value of the cell and a reference signal received quality value of the cell, and the signal quality selected from the neighboring cells is greater than a signal quality threshold of the cell.
  • the neighboring cell is selected, a neighboring cell that satisfies the following coverage level cell selection condition is selected from each neighboring cell:
  • Q relevmeas represents the measured cell reference signal received power value
  • P compensation represents the cell reference signal received power threshold
  • Q relevmin represents the cell The minimum required reception level
  • Q rxlevminoffse represents the offset of Q relevmin
  • Q coverageclassoffset represents the pre-configured coverage level compensation value of each cell on the network side
  • P compensation represents (P EMAX -P PowerClass ) and the maximum value of 0,
  • P EMAX represents the maximum transmit power when the user terminal performs uplink transmission
  • P PowerClass represents the maximum RF output power of the user terminal;
  • S qual represents the cell selection quality value
  • Q qualmeas represents the measured cell reference signal reception quality value
  • (Q qualmin +Q qualminoffset +Q coverageclassoffset ) represents the measured cell reference signal reception quality threshold
  • Q qualmin represents the minimum required by the cell
  • the quality level, Q qualminoffset represents the offset of Q qualmin
  • Q coverage class offset represents the pre-configured coverage level compensation value of each cell on the network side.
  • the apparatus further comprises:
  • a determining unit configured to determine, before the acquiring unit acquires a coverage level compensation value pre-configured by the network side for the neighboring cell, that the user terminal supports the extended coverage cell that exists in the extended coverage area. If the determining unit determines that the camping extended coverage cell is not supported, the subsequent user terminal may select the target cell by using the cell reselection condition provided by the prior art.
  • the embodiment of the present invention further provides a cell selection device, which is performed by the network side. As shown in FIG. 6, the device includes:
  • the configuration unit 601 is configured to configure a coverage level compensation value for each cell.
  • the sending unit 602 is configured to send, to the user terminal, a coverage level compensation value configured by the configuration unit 601 for each cell, where the coverage level compensation value is used by the user terminal to perform cell selection/reselection.
  • the configuration unit 601 on the network side may perform pre-configuration of the coverage level compensation value only for the extended coverage cells in the respective cells, and no coverage level compensation value is configured for the normal cell, that is, the coverage level compensation value configured for the normal cell. Is the default.
  • the coverage level compensation value pre-configured for the normal cell is also zero.
  • the coverage level compensation value is pre-configured for each cell according to the bearer service, load, and the like of each cell.
  • the configuration unit 601 is further configured to configure a reselection priority for each cell, and the sending unit 602 may send the reselection priority information of the neighboring cell to the user terminal by using the following manner, and according to the neighboring cell Reselect the priority information to select the target cell.
  • the first implementation manner is: for the reselection priority of the neighboring cell, the sending unit 602 on the network side may send the message to the user terminal by using a broadcast message. Specifically, it can be sent to the user terminal through the system message broadcast system information block (SIB) through the parameter cellReselectionPriority.
  • SIB system message broadcast system information block
  • the configuration unit 601 on the network side configures a reselection priority for each neighboring cell.
  • the sending unit 602 sends a connection message to the user terminal through a Radio Resource Control (RRC) release connection message.
  • RRC Radio Resource Control
  • the configuration unit 601 on the network side configures a neighbor cell list for the user terminal, and the sending unit 601 sends the neighbor cell list configured by the configuration unit 601 to the user terminal, where the neighbor cell list carries the neighbor cell identifier and the reselection priority Level information.
  • the user terminal obtains the priority information configured by the network side for each neighboring cell in the foregoing manner, where the reselection priority of the extended coverage cell included in the neighboring cell is lower than the reselection priority of the normal cell. Then, the user equipment selects the target cell according to the measured signal quality of the camped cell and the neighboring cell, the acquired camped cell and neighbor cell compensation value, and the reselection priority information of each neighboring cell.
  • An embodiment of the present invention provides a cell selection method. As shown in FIG. 7, the method may be performed by a user terminal, and the method includes:
  • Step 701 Measure the signal quality of the cell, and obtain a coverage level compensation value that is pre-configured by the network side.
  • the signal quality of the measurement cell may be performed before the acquisition of the coverage level compensation value of the cell pre-configured by the network side, or after the acquisition of the coverage level compensation value of the cell pre-configured by the network side, and may also be performed at the same time. This is not specifically limited.
  • the coverage level compensation value that is pre-configured by the network on the network side may be configured according to the bearer service, load, and the like of each cell when the network planning network is optimized.
  • the above-mentioned cell may include both an extended coverage cell in which an extended coverage area exists and a normal cell in which an extended coverage area does not exist, and may also include only a normal cell.
  • the network side may perform pre-configuration of the coverage level compensation value only for the extended coverage cell, and no coverage level compensation value is configured for the normal cell, that is, the coverage level compensation value configured for the normal cell is a default value.
  • the coverage level compensation value pre-configured for the normal cell is also zero.
  • Step 702 Select a target cell according to the measured signal quality of the cell and the acquired coverage level compensation value of the cell.
  • the target cell after measuring the signal quality of the cell and obtaining the coverage level compensation value of the cell pre-configured by the network side, the target cell may be specifically selected as follows:
  • the cell When determining that the signal quality quality of the cell is greater than the signal quality threshold of the cell, the cell is regarded as a cell that satisfies the coverage level cell selection condition; the signal quality threshold of the cell is determined according to the minimum received signal threshold of the cell and the coverage level compensation value of the cell. of;
  • the cell that satisfies the coverage level cell selection condition is used as the target cell.
  • the user terminal may directly camp on the cell without determining the other cell.
  • the signal quality of the measured cell may include a Reference Signal Receiving Power (RSRP) of the reference signal of the cell and a Reference Signal Receiving Quality (RSRQ) of the cell.
  • the signal quality threshold of the cell includes a power threshold of the RSRP for the cell, and a quality threshold of the RSRQ for the cell, where the minimum received signal quality threshold includes the minimum reception level required by the cell and the minimum quality required by the cell. Quantity level.
  • the measured signal quality of the cell may also include only the reference signal received power value of the cell, and the signal quality threshold of the cell includes a power threshold for the RSRP of the cell.
  • the cell RSRP value is greater than the cell power threshold, or the cell RSRP value is greater than the cell power threshold and the RSRQ value of the cell is greater than the cell quality threshold.
  • the reference signal received power threshold of the cell is determined according to the minimum receiving level required by the cell and the coverage level compensation value of the cell, and the reference signal receiving quality threshold of the cell is compensated according to the minimum quality level required by the cell and the coverage level of the cell. The value is determined.
  • the coverage level cell selection condition may satisfy the following formula:
  • Q rxlevmin +Q rxlevminoffse +Q coverageclassoffset represents a reference signal received power threshold of the cell
  • Q qualmin +Q qualminoffset +Q coverageclassoffset represents a reference signal reception quality threshold of the cell.
  • the coverage level compensation value pre-configured for the cell is obtained on the network side.
  • the cell that satisfies the coverage level cell selection condition is subsequently selected as the target cell.
  • the signal quality of the cell may be measured, and the target cell may be selected by the cell selection condition (S criterion) provided by the prior art.
  • the signal quality of the cell may include a reference signal received power value of the cell and a reference signal received quality value of the cell, wherein the cell selection condition (ie, the S criterion) satisfies the following formula:
  • An embodiment of the present invention further provides a cell reselection method. As shown in FIG. 8, the method includes:
  • Step 801 Measure the signal quality of the camping cell where the user terminal is currently located and the neighboring cell of the camping cell, and obtain the coverage level compensation value pre-configured by the network side for the camping cell and the neighboring cell.
  • the measurement of the signal quality of the camped cell and the acquisition of the coverage level compensation value of the pre-configured cell on the network side may be performed before the neighbor cell and the signal quality are measured, and the coverage level compensation value pre-configured by the network side is obtained.
  • the embodiment of the present invention may be further limited in the following.
  • the network side may also perform pre-configuration of the coverage level compensation value only for the extended coverage cell.
  • the coverage level compensation value is not configured for the normal cell, that is, the coverage level compensation value configured for the normal cell is a default value.
  • the coverage level compensation value pre-configured for the normal cell is also zero.
  • the coverage level compensation value may be pre-configured for each cell according to the bearer service, load, and the like of each cell in the network planning network optimization.
  • the network side may configure a neighbor cell list for the user terminal, and the neighbor cell list carries the neighbor cell identifier, and the user terminal may obtain the information of the neighbor cell by receiving the neighbor cell list sent by the network side, and the specific user terminal measures the receiving.
  • Step 802 Select a target cell from the neighboring cells according to the measured signal quality of the camped cell and the neighboring cell, and the obtained coverage level compensation value of the camped cell and the neighboring cell.
  • the target cell is selected from the neighboring cell according to the measured signal quality of the camping cell and the neighboring cell, and the acquired coverage level compensation value of the camping cell and the neighboring cell, which can be implemented by:
  • determining whether the neighboring cell satisfies a coverage level cell reselection condition where the coverage level cell reselection condition is that the signal quality level of the neighboring cell is greater than the camped cell within a predetermined time interval.
  • a signal quality level the signal quality level of the neighboring cell is determined according to a signal quality of the neighboring cell and a coverage level compensation value of the neighboring cell, where a signal quality level of the camping cell is based on a signal quality of the camping cell and a camped cell Coverage level compensation value determination;
  • the neighboring cell determined in each of the selected neighboring cells that satisfies the coverage level cell reselection condition is used as the target cell.
  • the neighboring cell that meets the coverage level cell reselection condition is used as the target cell, and the signal quality levels of the neighboring cells that satisfy the coverage level reselection condition may be ranked, and the neighboring cell with the largest signal quality level is used as the target cell.
  • selecting a neighboring cell that meets the set condition from each neighboring cell may be implemented in the following manner:
  • a neighboring cell that satisfies a cell selection condition is selected from each neighboring cell, and the cell selection condition satisfies a signal quality of the cell that is greater than a minimum received signal threshold of the cell.
  • the cell selection condition (ie, the S criterion) may also be implemented by referring to the description of the S criterion in the foregoing cell selection method, and details are not described herein again.
  • a neighboring cell that satisfies the coverage level cell selection condition is selected from each neighboring cell.
  • the coverage level selection condition satisfies a neighboring cell whose signal quality of the cell is greater than a signal quality threshold of the cell, and the signal quality threshold of the cell is determined according to a minimum received signal threshold of the cell and a coverage level compensation value of the cell.
  • the coverage level cell selection condition in the second implementation manner may be implemented by referring to the coverage level cell selection condition in the cell selection method, and details are not described herein.
  • the signal quality of the cell includes a reference signal received power value of the cell
  • the coverage level cell reselection condition may satisfy the following formula:
  • R s Q meas,s +Q Hyst -Q coverageclassoffset,s ;
  • R n Q meas,n –Q offset -Q coverageclassoffset,n ;
  • Q meas indicates the RSRP value of the cell; where Q meas, s is for the current camping cell where the user terminal is located, and Q meas, n is for the neighboring cell of the user terminal.
  • Q Hyst Indicates the hysteresis value of the RSRP of the camping cell.
  • Q offset represents the offset value between the current camping cell and the neighboring cell where the user terminal is located.
  • Q coverageclassoffset indicates that the network side is the pre-configured coverage level compensation value of the camping cell
  • Q coverage class offset indicates that the network side is a pre-configured coverage level compensation value for the neighboring cell.
  • the user terminal may also use the reselection priority of the cell as a selection parameter of the selected target cell.
  • the first implementation manner is: for the reselection priority of the neighboring cell, the network side may send the message to the user terminal by using a broadcast message. Specifically, it can be sent to the user terminal through the system message broadcast system information block (SIB) by using the parameter cellReselectionPriority, so that the user terminal receives the reselection priority information of the neighboring cell, and reselects the priority information according to the neighboring cell. Select the target cell.
  • SIB system message broadcast system information block
  • the network side configures a reselection priority for each neighboring cell, and when the user terminal releases the radio resource, the radio resource control (Radio Resource Control abbreviated as RRC) releases the connection message and sends the connection message to the user terminal, so that the user terminal receives the reselection priority of the neighboring cell.
  • RRC Radio Resource Control abbreviated as RRC
  • the reselection priority information may be carried in the neighbor cell list sent by the network side to the user terminal, so that the user terminal receives the reselection priority information of the neighboring cell, and according to the reselection priority information of the neighboring cell Select the target cell.
  • the user terminal obtains the reselection priority information configured by the network side for each neighboring cell by using the foregoing manner, where the reselection priority of the extended coverage cell with the extended coverage area included in the neighboring cell is lower than that of the normal cell without the extended coverage area Reselection priority.
  • the user terminal selects the target cell according to the measured signal quality of the camped cell and the neighboring cell, the acquired coverage level compensation value of the camped cell and the neighboring cell, and the reselection priority information of each neighboring cell.
  • the user terminal when the user terminal performs cell reselection, when determining that there is a neighboring cell in each neighboring cell with a reselection priority higher than a reselection priority of the camping cell where the user terminal is currently located, the user terminal measures the determined neighbor.
  • the signal quality of the cell is used as the target cell when the neighboring cell satisfies the coverage level cell selection condition. If it is determined that the neighboring cell whose reselection priority is higher than the reselection priority of the camping cell does not satisfy the coverage level cell selection condition, the user terminal measures whether the signal quality of the camped cell is lower than a set threshold in a predetermined time interval.
  • the neighboring cell When the signal quality of the measurement camping cell is lower than a set threshold within a predetermined time interval, selecting a cell selection condition that satisfies the coverage level from a neighboring cell whose reselection priority is not higher than a reselection priority of the camping cell.
  • the neighboring cell when the selected neighboring cell satisfies the coverage level cell reselection condition, uses the neighboring cell as the target cell. If you determine each When the reselection priorities of the cells are not higher than the neighboring cell of the reselection priority of the camping cell where the user terminal is located, the user terminal measures whether the signal quality of the camped cell is lower than the set threshold within a predetermined time interval.
  • a neighboring cell that satisfies the coverage level cell selection condition is selected from each neighboring cell, and the selected neighboring cell satisfies the coverage level cell weight.
  • the neighboring cell is used as the target cell.
  • the cell reselection may be performed according to the cell reselection scheme provided in the prior art.
  • the pre-configured coverage level compensation value for the neighboring cell can also achieve the cell with better signal quality when the user terminal consumes relatively low power.
  • the method may further include: determining that the user terminal supports the extended coverage cell that resides in the extended coverage area. If the user terminal determines that the camping extended coverage cell is not supported, the subsequent user terminal may select the target cell by using the cell reselection condition provided by the prior art.
  • the embodiment of the invention further provides a cell selection method, which is performed by the network side, as shown in FIG. 9, the method includes:
  • Step 901 Configure a coverage level compensation value for each cell.
  • Step 902 Send a coverage level compensation value configured for each cell to the user terminal, where the coverage level compensation value is used by the user terminal to perform cell selection/reselection.
  • the network side may perform the pre-configuration of the coverage level compensation value only for the extended coverage cell in each cell, and the coverage level compensation value is not configured for the normal cell, that is, the coverage level compensation value configured for the normal cell is a default value. .
  • the coverage level compensation value pre-configured for the normal cell is also zero.
  • the coverage level compensation value is pre-configured for each cell according to the bearer service, load, and the like of each cell.
  • the method further includes: configuring a reselection priority for each cell, and sending the reselection priority information to the user terminal, so that the user terminal receives the reselection priority information of the neighboring cell, and selects according to the reselection priority information of the neighboring cell.
  • Target cell configuring a reselection priority for each cell, and sending the reselection priority information to the user terminal, so that the user terminal receives the reselection priority information of the neighboring cell, and selects according to the reselection priority information of the neighboring cell.
  • the first implementation manner is: for the reselection priority of the neighboring cell, the network side can broadcast the message. Send to the user terminal. Specifically, it can be sent to the user terminal through the system message broadcast system information block (SIB) through the parameter cellReselectionPriority.
  • SIB system message broadcast system information block
  • the network side configures a reselection priority for each neighboring cell.
  • the radio resource control Radio Resource Control abbreviated as RRC
  • RRC Radio Resource Control
  • the network side configures a neighbor cell list for the user terminal, and sends the neighbor cell list to the user terminal, where the neighbor cell list carries the neighbor cell identifier and the reselection priority information.
  • the user terminal obtains the priority information configured by the network side for each neighboring cell in the foregoing manner, where the reselection priority of the extended coverage cell included in the neighboring cell is lower than the reselection priority of the normal cell. Then, the user equipment selects the target cell according to the measured signal quality of the camped cell and the neighboring cell, the acquired camped cell and neighbor cell compensation value, and the reselection priority information of each neighboring cell.
  • the embodiment of the present invention further provides a cell selection device.
  • the device includes a processor 1001 and a memory 1002 connected to the processor 1001.
  • the memory 1002 is configured to store a program.
  • the program can include program code, the program code including computer operating instructions.
  • the memory 1002 may include a random access memory (RAM), and may also include a non-volatile memory such as at least one disk storage.
  • the processor 1001 executes the program stored in the memory 1002, and implements the cell selection method shown in FIG. 7 of the present invention, including:
  • the coverage level of the acquired normal cell is zero or a default value, where the cell includes an extended coverage area with an extended coverage area and a normal area where the extended coverage area does not exist.
  • the target cell is selected according to the measured signal quality of the cell and the coverage level compensation value of the acquired cell, including:
  • the cell is used as the cell that satisfies the coverage level cell selection condition, and the signal quality threshold of the cell is determined according to the minimum received signal threshold of the cell and the coverage level compensation value of the cell;
  • the cell that satisfies the coverage level cell selection condition is used as the target cell.
  • the signal quality of the cell includes a reference signal received power of the cell and a cell reference signal received quality value, where the coverage level cell selection condition satisfies the following formula:
  • Q relevmeas represents the measured cell reference signal received power value
  • P compensation represents the cell reference signal received power threshold
  • Q relevmin represents the cell The minimum required reception level
  • Q rxlevminoffse represents the offset of Q relevmin
  • Q coverageclassoffset represents the pre-configured coverage level compensation value of the cell on the network side
  • P compensation represents (P EMAX -P PowerClass ) and the maximum value in 0,
  • P EMAX represents the maximum transmit power when the user terminal performs uplink transmission, and P PowerClass represents the maximum RF output power of the user terminal;
  • S qual represents the cell selection quality value
  • Q qualmeas represents the measured cell reference signal reception quality value
  • (Q qualmin +Q qualminoffset +Q coverageclassoffset ) represents the measured cell reference signal reception quality threshold
  • Q qualmin represents the minimum required by the cell
  • the quality level, Q qualminoffset represents the offset of Q qualmin
  • Q coverageclassoffset represents the pre-configured coverage level compensation value of the cell on the network side.
  • the network side before acquiring the coverage level compensation value pre-configured by the network side for the cell, determining that the user terminal supports the extended coverage cell that resides in the extended coverage area.
  • the embodiment of the present invention further provides a cell reselection device.
  • the device includes a processor 1101 and an AND processor 1101. Connected memory 1102.
  • the memory 1102 is configured to store a program.
  • the program can include program code, the program code including computer operating instructions.
  • the memory 1102 may include a random access memory (RAM), and may also include a non-volatile memory, such as at least one disk storage.
  • the processor 1101 executes the program stored in the memory 1102, and implements the cell reselection method shown in FIG. 8 of the present invention, including:
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the computer readable memory is stored in the computer readable memory.
  • the instructions in the production result include an article of manufacture of the instruction device that implements the functions specified in one or more blocks of the flowchart or in a flow or block of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本发明实施例提供了一种小区选择及重选方法、装置，解决现有技术中存在的利用现有的小区选择及重选方法使得数据重复接收，造成资源浪费且耗电增加的问题。小区选择方法包括：测量小区的信号质量，及获取网络侧为小区预配置的覆盖等级补偿值；根据所述获取单元测量的小区的信号质量以及获取的小区的覆盖等级补偿值，选择目标小区。

Description

一种小区选择及重选方法、装置 技术领域
本发明涉及通信技术领域，尤其涉及一种小区选择及重选方法、装置。
背景技术
物联网(Machine to Machine，简称M2M)，即MTC(Machine Type Communication)，是指机器与机器之间通过无线网络互相传递信息和数据。物联网广泛应用于多个领域，包括智能交通、楼控系统、家庭智能控制系统、视频监控系统、工业监测等。物联网产业被认为是信息产业继计算机、互联网和移动通信网之后的第四次浪潮，是未来网络的发展方向，典型的网络结构如图1所示。
由于传感器、电表、货物等等M2M设备部署的位置可能位于角落，或者地下室等覆盖很差的地方，并且据预测，到2022年，这种覆盖类型的用户终端的数量会达到15.5亿。为了使这些位于覆盖很差区域的设备能够成功的使用M2M的网络，M2M网络的覆盖需要比当前的蜂窝网络要好，因此M2M网络覆盖需要增强为20dB。
为了满足覆盖增加20dB的要求，窄带系统中采用了速率的时域扩频的方式对小区覆盖进行扩展，对于存在扩展覆盖区域的小区可以称为扩展覆盖小区，对于不存在扩展覆盖区域的小区可以称为正常小区。如图2所示的扩展覆盖小区，对于区域A为扩展覆盖小区的普通覆盖区域，不需要扩频(称为1X)；区域B/C为扩展覆盖小区的扩展覆盖区域，需要使用扩频的方式，区域B/C使用的扩频倍数分别为8/64(称为8X和64X)。用户终端(User Equipment，简称UE)需要选择的小区中可能既存在扩展覆盖小区也会存在正常小区。对于既包括扩展覆盖小区又包括正常小区的被测量小区称为多覆盖等级小区。对于仅包括正常小区的被测量小区称为单覆盖等级小区。
由于在增加网络覆盖的基础上，必然会使得正常小区与扩展覆盖小区存 在重叠的区域。例如，如图3所示，区域A和区域B所在小区为扩展覆盖小区，其中区域A为正常覆盖区域，区域B为扩展覆盖区域，例如B使用的扩频倍数为8(称为8X)，区域C所在小区为正常小区。当UE处于图中区域B和区域C同时覆盖的地区，B为扩展覆盖区域，需要使用扩频的方式，例如B使用的扩频倍数为8(称为8X)，则用户终端驻留在该区域B时，在需要重复8次接收或者测量数据。在现有技术并没有一个针对存在扩展覆盖小区的小区选择及重选方法。针对如图3所示的存在扩展覆盖小区和正常覆盖小区的情况，按照现有的小区选择及重选方法，可能会直接选择到扩展覆盖小区，会使得数据重复接收，造成资源浪费且耗电增加。
发明内容
本发明实施例提供了一种小区选择及重选方法、装置，解决现有技术中存在的利用现有的小区选择及重选方法使得数据重复接收，造成资源浪费且耗电增加的问题。
第一方面，本发明实施例提供了一种小区选择装置，该装置包括：
获取单元，用于测量小区的信号质量，及获取网络侧为小区预配置的覆盖等级补偿值；
处理单元，用于根据所述获取单元测量的小区的信号质量以及获取的小区的覆盖等级补偿值，选择目标小区。
结合第一方面，在第一方面的第一种可能的实现方式中，所述处理单元具体用于：
若所述获取单元获取的小区的的信号质量大于小区的信号质量阈值，将该小区作为满足覆盖等级小区选择条件的小区，该小区的信号质量阈值是根据该小区的最小接收信号阈值和该小区的覆盖等级补偿值确定的；
将满足覆盖等级小区选择条件的小区作为目标小区。
结合第一方面的第一种可能的实现方式，在第一方面的第二种可能的实现方式中，所述处理单元，具体用于在所述小区的信号质量包括小区的参考 信号接收功率以及小区参考信号接收质量值时，将满足如下覆盖等级小区选择条件的小区作为目标小区：
Srxlev>0且Squal>0，其中：
Srxlev＝Qrxlevmeas–(Qrxlevmin+Qrxlevminoffse+Qcoverageclassoffset)–Pcompensation；
Squal＝Qqualmeas–(Qqualmin+Qqualminoffset+Qcoverageclassoffset)；
其中，Srelex表示小区选择接收水平，Qrelevmeas表示测量到的小区参考信号接收功率值，(Qrxlevmin+Qrxlevminoffse+Qcoverageclassoffset)–Pcompensation表示小区参考信号接收功率阈值；其中Qrelevmin表示小区所要求的最小接收水平，Qrxlevminoffse表示Qrelevmin的偏移量，Qcoverageclassoffset表示网络侧为小区的预配置的覆盖等级补偿值，Pcompensation表示(PEMAX-PPowerClass)和0中的最大值，PEMAX表示用户终端进行上行传输时的最大发射功率，PPowerClass表示用户终端最大射频输出功率；
Squal表示小区选择质量值，Qqualmeas表示测量到的小区参考信号接收质量值，(Qqualmin+Qqualminoffset+Qcoverageclassoffset)表示测量到的小区参考信号接收质量阈值；Qqualmin表示小区所要求的最小质量水平，Qqualminoffset表示Qqualmin的偏移量，Qcoverageclassoffset表示网络侧为小区的预配置的覆盖等级补偿值。
结合第一方面及第一方面的第一种至第二种可能的实现方式中的任意一种，在第一方面的第三种可能的实现方式中，所述获取单元，具体用于在所述小区包括存在扩展覆盖区域的扩展覆盖小区及不存在扩展覆盖区域的正常小区时获取的正常小区的覆盖等级补偿值为零或者为缺省值。
结合第一方面及第一方面的第一种至第三种可能的实现方式中的任意一种，在第一方面的第四种可能的实现方式中，所述装置还包括：
确定单元，用于在所述获取单元获取网络侧为小区预配置的覆盖等级补偿值之前，确定用户终端支持驻留在存在扩展覆盖区域的扩展覆盖小区。
第二方面，本发明实施例提供了一种小区重选装置，该装置包括：
获取单元，用于测量用户终端当前所在的驻留小区及所述驻留小区的邻小区的信号质量，及获取网络侧为所述驻留小区及邻小区预配置的覆盖等级补偿值；
处理单元，用于根据所述获取单元测量的驻留小区和邻小区的信号质量，以及获取的驻留小区和邻小区的覆盖等级补偿值，从所述邻小区中选择目标小区。
结合第二方面，在第二方面的第一种可能的实现方式中，所述处理单元，具体用于从各个邻小区中选择出满足设定条件的邻小区；
针对选择出的各个邻小区分别执行：确定该邻小区是否满足覆盖等级小区重选条件，所述覆盖等级小区重选条件为在规定的时间间隔内该邻小区的信号质量等级大于驻留小区的信号质量等级，该邻小区的信号质量等级根据该邻小区的信号质量与该邻小区的覆盖等级补偿值确定，所述驻留小区的信号质量等级根据驻留小区的信号质量与驻留小区的覆盖等级补偿值确定；
将选择出的各个邻小区中满足覆盖等级小区重选条件的邻小区作为目标小区。
结合第二方面的第一种可能的实现方式，在第二方面的第二种可能的实现方式中，所述处理单元，用于将选择出的各个小区中满足如下覆盖等级小区重选条件的邻小区作为目标小区，
在规定的时间间隔内Rn>Rs；
其中，Rs＝Qmeas,s+QHyst-Qcoverageclassoffset,s；
Rn＝Qmeas,n–Qoffset-Qcoverageclassoffset,n；
其中：Rn表示邻小区的信号质量等级；Rs表示驻留小区的信号质量等级；
Qmeas,s表示驻留小区的信号质量中的参考信号接收功率值，QHyst表示驻留小区的参考信号接收功率值的迟滞值，Qcoverageclassoffset,s表示网络侧为驻留小区预配置的覆盖等级补偿值；
Qmeas,n表示邻小区的信号质量中的参考信号接收功率值，Qoffset表示用户终端所在的当前驻留小区和邻小区间的偏移值，Qcoverageclassoffset,n表示网络侧为邻小区预配置的覆盖等级补偿值。
结合第二方面的第一种或者第二种可能的实现方式，在第二方面的第三种可能的实现方式中，所述处理单元具体用于：
从各个邻小区中选择出信号质量大于小区的最小接收信号阈值的邻小区；或者
从各个邻小区中选择出信号质量大于小区的信号质量阈值的邻小区，所述小区的信号质量阈值是根据小区的最小接收信号阈值和小区的覆盖等级补偿值确定的。
结合第二方面和第二方面的第一种至第三种可能的实现方式中的任意一种，在第二方面的第四种可能的实现方式中，该装置还包括：
接收单元，在所述获取单元测量邻小区的信号质量，及获取网络侧为邻小区预配置的覆盖等级补偿值之前，接收网络侧发送的邻小区列表，所述邻小区列表中携带邻小区标识；
所述获取单元，具体用于测量所述接收单元接收到的邻小区列表中携带的各个邻小区标识分别对应的邻小区的信号质量、及获取网络侧为邻小区列表中携带的各个邻小区标识分别对应的邻小区的预配置的覆盖等级补偿值。
结合第二方面和第二方面的第一种至第四种可能的实现方式中的任意一种，在第二方面的第五种可能的实现方式中，所述获取单元，还用于获取网络侧为各个邻小区配置的重选优先级信息，其中，邻小区中包括的存在扩展覆盖区域的扩展覆盖小区的重选优先级低于不存在扩展覆盖区域的正常小区的重选优先级；
所述处理单元，具体用于根据所述获取单元测量的驻留小区及邻小区的信号质量以及获取的驻留小区及邻小区的覆盖等级补偿值，以及各个邻小区的重选优先级信息，从所述邻小区中选择目标小区。
结合第二方面的第五种可能的实现方式，在第二方面的第六种可能的实现方式中，所述处理单元，具体用于确定各个邻小区中包括重选优先级高于用户终端当前所在的驻留小区的重选优先级的邻小区时，从确定的邻小区中选择满足覆盖等级小区选择条件的邻小区作为目标小区，所述覆盖等级小区选择条件满足邻小区的信号质量大于邻小区的信号质量阈值，其中邻小区的信号质量阈值是根据邻小区的最小接收信号阈值和邻小区的覆盖等级补偿值 确定的；
若确定重选优先级高于驻留小区的重选优先级的邻小区均不满足覆盖等级小区选择条件或者确定各个邻小区中不包括重选优先级高于用户终端当前所在的驻留小区的重选优先级的邻小区时，确定驻留小区的信号质量在规定时间间隔内低于设定的阈值时，从重选优先级不高于驻留小区的重选优先级的邻小区中选择出满足覆盖等级小区选择条件的邻小区，当选择出的邻小区满足覆盖等级小区重选条件时，则将该邻小区作为目标小区；
所述覆盖等级小区重选条件为在规定的时间间隔内邻小区的信号质量等级大于驻留小区的信号质量等级，其中邻小区的信号质量等级根据邻小区的信号质量与邻小区的覆盖等级补偿值确定，所述驻留小区的信号质量等级根据驻留小区的信号质量与驻留小区的覆盖等级补偿值确定。
结合第二方面的第三种或者第六种可能的实现方式，在第二方面的第七种可能的实现方式中，所述处理单元，具体用于在小区的信号质量包括小区的参考信号接收功率值以及小区的参考信号接收质量值，且从各个邻小区中选择出信号质量大于小区的信号质量阈值的邻小区时，从各个邻小区中选择出满足如下覆盖等级小区选择条件的邻小区：
Srxlev>0且Squal>0，其中：
Srxlev＝Qrxlevmeas–(Qrxlevmin+Qrxlevminoffse+Qcoverageclassoffset)–Pcompensation；
Squal＝Qqualmeas–(Qqualmin+Qqualminoffset+Qcoverageclassoffset)；
其中，Srelex表示小区选择接收水平，Qrelevmeas表示测量到的小区参考信号接收功率值，(Qrxlevmin+Qrxlevminoffse+Qcoverageclassoffset)–Pcompensation表示小区参考信号接收功率阈值；其中Qrelevmin表示小区所要求的最小接收水平，Qrxlevminoffse表示Qrelevmin的偏移量，Qcoverageclassoffset表示网络侧为各个小区的预配置的覆盖等级补偿值，Pcompensation表示(PEMAX-PPowerClass)和0中的最大值，PEMAX表示用户终端进行上行传输时的最大发射功率，PPowerClass表示用户终端最大射频输出功率；
Squal表示小区选择质量值，Qqualmeas表示测量到的小区参考信号接收质量 值，(Qqualmin+Qqualminoffset+Qcoverageclassoffset)表示测量到的小区参考信号接收质量阈值；Qqualmin表示小区所要求的最小质量水平，Qqualminoffset表示Qqualmin的偏移量，Qcoverageclassoffset表示网络侧为各个小区的预配置的覆盖等级补偿值。
结合第二方面和第二方面的第一种至第七种可能的实现方式中的任意一种，在第二方面的第八种可能的实现方式中，所述获取单元，具体用于在所述各个小区包括存在扩展覆盖区域的扩展覆盖小区及不存在扩展覆盖区域的正常小区时获取的正常小区的覆盖等级补偿值为零或者为缺省值。
结合第二方面和第二方面的第一种至第八种可能的实现方式中的任意一种，在第二方面的第九种可能的实现方式中，该装置还包括：
确定单元，用于在所述获取单元获取网络侧为邻小区预配置的覆盖等级补偿值之前，确定用户终端支持驻留在存在扩展覆盖区域的扩展覆盖小区。
第三方面，本发明实施例还提供了一种小区选择装置，该装置包括：
配置单元，用于为各个小区配置覆盖等级补偿值；
发送单元，用于将所述配置单元为各个小区配置的覆盖等级补偿值发送给用户终端，所述覆盖等级补偿值用于用户终端进行小区选择/重选。
第四方面，本发明实施例提供了一种小区选择方法，该方法包括：
测量小区的信号质量，及获取网络侧为各个小区预配置的覆盖等级补偿值；
根据测量的小区的信号质量以及获取的各个小区的覆盖等级补偿值，选择目标小区。
结合第四方面，在第四方面的第一种可能的实现方式中，根据测量的小区的信号质量以及获取的小区的覆盖等级补偿值，选择目标小区，包括：
若小区的的信号质量大于小区的信号质量阈值，则将小区作为满足覆盖等级小区选择条件的小区，小区的信号质量阈值是根据小区的最小接收信号阈值和小区的覆盖等级补偿值确定的；
将该满足覆盖等级小区选择条件的小区作为目标小区。
结合第四方面的第一种可能的实现方式，在第四方面的第二种可能的实 现方式中，所述小区的信号质量包括小区的参考信号接收功率以及小区参考信号接收质量值，所述覆盖等级小区选择条件满足如下公式：
Srxlev>0且Squal>0，其中：
Srxlev＝Qrxlevmeas–(Qrxlevmin+Qrxlevminoffse+Qcoverageclassoffset)–Pcompensation；
Squal＝Qqualmeas–(Qqualmin+Qqualminoffset+Qcoverageclassoffset)；
其中，Srelex表示小区选择接收水平，Qrelevmeas表示测量到的小区参考信号接收功率值，(Qrxlevmin+Qrxlevminoffse+Qcoverageclassoffset)–Pcompensation表示小区参考信号接收功率阈值；其中Qrelevmin表示小区所要求的最小接收水平，Qrxlevminoffse表示Qrelevmin的偏移量，Qcoverageclassoffset表示网络侧为小区的预配置的覆盖等级补偿值，Pcompensation表示(PEMAX-PPowerClass)和0中的最大值，PEMAX表示用户终端进行上行传输时的最大发射功率，PPowerClass表示用户终端最大射频输出功率；
Squal表示小区选择质量值，Qqualmeas表示测量到的小区参考信号接收质量值，(Qqualmin+Qqualminoffset+Qcoverageclassoffset)表示测量到的小区参考信号接收质量阈值；Qqualmin表示小区所要求的最小质量水平，Qqualminoffset表示Qqualmin的偏移量，Qcoverageclassoffset表示网络侧为小区的预配置的覆盖等级补偿值。
结合第四方面及第四方面的第一种至第二种可能的实现方式中的任意一种，在第四方面的第三种可能的实现方式中，所述小区包括存在扩展覆盖区域的扩展覆盖小区及不存在扩展覆盖区域的正常小区，则所述获取的正常小区的覆盖等级补偿值为零或者为缺省值。
结合第四方面及第四方面的第一种至第三种可能的实现方式中的任意一种，在第四方面的第四种可能的实现方式中，在获取网络侧为小区预配置的覆盖等级补偿值之前，所述方法还包括：
确定用户终端支持驻留在存在扩展覆盖区域的扩展覆盖小区。
第五方面，本发明实施例提供了一种小区重选方法，该方法包括：
测量用户终端当前所在的驻留小区及所述驻留小区的邻小区的信号质量，及获取网络侧为所述驻留小区及邻小区预配置的覆盖等级补偿值；
根据测量的驻留小区和邻小区的信号质量，以及获取的驻留小区和邻小 区的覆盖等级补偿值，从所述邻小区中选择目标小区。
结合第五方面，在第五方面的第一种可能的实现方式中，根据测量的驻留小区和邻小区的信号质量，以及获取的驻留小区和邻小区的覆盖等级补偿值，从所述邻小区中选择目标小区，包括：
从各个邻小区中选择出满足设定条件的邻小区；
针对选择出的各个邻小区分别执行：确定该邻小区是否满足覆盖等级小区重选条件，所述覆盖等级小区重选条件为在规定的时间间隔内该邻小区的信号质量等级大于驻留小区的信号质量等级，该邻小区的信号质量等级根据该邻小区的信号质量与该邻小区的覆盖等级补偿值确定，所述驻留小区的信号质量等级根据驻留小区的信号质量与驻留小区的覆盖等级补偿值确定；
将选择出的各个邻小区中满足覆盖等级小区重选条件的邻小区作为目标小区。
结合第五方面的第一种可能的实现方式，在第五方面的第二种可能的实现方式中，所述覆盖等级小区重选条件满足如下公式：
在规定的时间间隔内Rn>Rs；
其中，Rs＝Qmeas,s+QHyst-Qcoverageclassoffset,s；
Rn＝Qmeas,n–Qoffset-Qcoverageclassoffset,n；
其中：Rn表示邻小区的信号质量等级；Rs表示驻留小区的信号质量等级；
Qmeas,s表示驻留小区的信号质量中的参考信号接收功率值，QHyst表示驻留小区的参考信号接收功率值的迟滞值，Qcoverageclassoffset,s表示网络侧为驻留小区预配置的覆盖等级补偿值；
Qmeas,n表示邻小区的信号质量中的参考信号接收功率值，Qoffset表示用户终端所在的当前驻留小区和邻小区间的偏移值，Qcoverageclassoffset,n表示网络侧为邻小区预配置的覆盖等级补偿值。
结合第五方面的第一种或者第二种可能的实现方式，在第五方面的第三种可能的实现方式中，从各个邻小区中选择出满足设定条件的邻小区，包括：
从各个邻小区中选择出信号质量大于小区的最小接收信号阈值的邻小 区；或者
从各个邻小区中选择出信号质量大于小区的信号质量阈值的邻小区，所述小区的信号质量阈值是根据小区的最小接收信号阈值和小区的覆盖等级补偿值确定的。
结合第五方面和第五方面的第一种至第三种可能的实现方式中的任意一种，在第五方面的第四种可能的实现方式中，测量邻小区的信号质量，及获取网络侧为邻小区预配置的覆盖等级补偿值之前，所述方法还包括：
接收网络侧发送的邻小区列表，所述邻小区列表中携带邻小区标识；
测量邻小区的信号质量，及获取网络侧为邻小区预配置的覆盖等级补偿值，具体包括：
测量接收到的邻小区列表中携带的各个邻小区标识分别对应的邻小区的信号质量、及获取网络侧为邻小区列表中携带的各个邻小区标识分别对应的邻小区的预配置的覆盖等级补偿值。
结合第五方面和第五方面的第一种至第四种可能的实现方式中的任意一种，在第五方面的第五种可能的实现方式中，所述方法还包括：
获取网络侧为各个邻小区配置的重选优先级信息，其中，邻小区中包括的存在扩展覆盖区域的扩展覆盖小区的重选优先级低于不存在扩展覆盖区域的正常小区的重选优先级；
根据测量的驻留小区及邻小区的信号质量以及获取的驻留小区及邻小区的覆盖等级补偿值，从所述邻小区中选择目标小区，具体包括：
根据测量的驻留小区及邻小区的信号质量以及获取的驻留小区及邻小区的覆盖等级补偿值，以及各个邻小区的重选优先级信息，从所述邻小区中选择目标小区。
结合第五方面的第五种可能的实现方式，在第五方面的第六种可能的实现方式中，根据测量的驻留小区及邻小区的信号质量以及获取的驻留小区及邻小区的覆盖等级补偿值，以及各个邻小区的重选优先级信息，从所述邻小
确定各个邻小区中包括重选优先级高于用户终端当前所在的驻留小区的重选优先级的邻小区时，从确定的邻小区中选择满足覆盖等级小区选择条件的邻小区作为目标小区，所述覆盖等级小区选择条件满足邻小区的信号质量大于邻小区的信号质量阈值，其中邻小区的信号质量阈值是根据邻小区的最小接收信号阈值和邻小区的覆盖等级补偿值确定的；
若确定重选优先级高于驻留小区的重选优先级的邻小区均不满足覆盖等级小区选择条件或者确定各个邻小区中不包括重选优先级高于用户终端当前所在的驻留小区的重选优先级的邻小区时，确定驻留小区的信号质量在规定时间间隔内低于设定的阈值时，从重选优先级不高于驻留小区的重选优先级的邻小区中选择出满足覆盖等级小区选择条件的邻小区，当选择出的邻小区满足覆盖等级小区重选条件时，则将该邻小区作为目标小区；
所述覆盖等级小区重选条件为在规定的时间间隔内邻小区的信号质量等级大于驻留小区的信号质量等级，其中邻小区的信号质量等级根据邻小区的信号质量与邻小区的覆盖等级补偿值确定，所述驻留小区的信号质量等级根据驻留小区的信号质量与驻留小区的覆盖等级补偿值确定。
结合第五方面的第三种或者第六种可能的实现方式，在第五方面的第七种可能的实现方式中，所述小区的信号质量包括：小区的参考信号接收功率值以及小区的参考信号接收质量值，所述从各个邻小区中选择出信号质量大于小区的信号质量阈值的邻小区，包括：
从各个邻小区中选择出满足如下公式的邻小区：
Srxlev>0且Squal>0，其中：
Srxlev＝Qrxlevmeas–(Qrxlevmin+Qrxlevminoffse+Qcoverageclassoffset)–Pcompensation；
Squal＝Qqualmeas–(Qqualmin+Qqualminoffset+Qcoverageclassoffset)；
其中，Srelex表示小区选择接收水平，Qrelevmeas表示测量到的小区参考信号接收功率值，(Qrxlevmin+Qrxlevminoffse+Qcoverageclassoffset)–Pcompensation表示小区参考信号接收功率阈值；其中Qrelevmin表示小区所要求的最小接收水平，Qrxlevminoffse表示Qrelevmin的偏移量，Qcoverageclassoffset表示网络侧为各个小区的预配置的覆盖等级 补偿值，Pcompensation表示(PEMAX-PPowerClass)和0中的最大值，PEMAX表示用户终端进行上行传输时的最大发射功率，PPowerClass表示用户终端最大射频输出功率；
Squal表示小区选择质量值，Qqualmeas表示测量到的小区参考信号接收质量值，(Qqualmin+Qqualminoffset+Qcoverageclassoffset)表示测量到的小区参考信号接收质量阈值；Qqualmin表示小区所要求的最小质量水平，Qqualminoffset表示Qqualmin的偏移量，Qcoverageclassoffset表示网络侧为各个小区的预配置的覆盖等级补偿值。
结合第五方面和第五方面的第一种至第七种可能的实现方式中的任意一种，在第五方面的第八种可能的实现方式中，所述各个小区包括存在扩展覆盖区域的扩展覆盖小区及不存在扩展覆盖区域的正常小区，则所述获取的网络侧为正常小区预配置的覆盖等级补偿值为零或者为缺省值。
结合第五方面和第二方面的第一种至第八种可能的实现方式中的任意一种，在第五方面的第九种可能的实现方式中，所述方法还包括：
确定用户终端支持驻留在存在扩展覆盖区域的扩展覆盖小区。
第六方面，本发明实施例提供了一种小区选择方法，该方法包括：
为各个小区配置覆盖等级补偿值；
将为各个小区配置的覆盖等级补偿值发送给用户终端，所述覆盖等级补偿值用于用户终端进行小区选择/重选。
利用本发明实施例提供的方案，通过网络侧为各个小区预配置覆盖等级补偿值，用户终端根据测量的各个小区的覆盖等级补偿值以及获取到的网络侧为各个邻小区预配置的覆盖等级补偿值，从各个邻小区中选择目标小区。通过网络侧为各个小区预配置的覆盖等级补偿值能够保证用户终端耗电相对较低的情况下选择信号质量较好的小区进行驻留。
附图说明
图1为现有技术提供的M2M网络结构图；
图2为现有技术提供的M2M覆盖增强示意图；
图3为现有技术提供的多覆盖等级小区示意图；
图4为本发明实施例提供的一种小区选择装置示意图；
图5为本发明实施例提供的一种小区重选装置示意图；
图6为本发明实施例提供的另一种小区选择装置示意图；
图7为本发明实施例提供的小区选择方法流程图；
图8为本发明实施例提供的小区重选方法流程图；
图9为本发明实施例提供的另一种小区选择方法流程图；
图10为本发明实施例提供的再一种小区选择装置示意图；
图11为本发明实施例提供的另一种小区重选装置示意图。
具体实施方式
为了使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明作进一步地详细描述，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做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
本文中描述的技术可用于各种通信系统，例如当前2G，3G通信系统和下一代通信系统，例如全球移动通信系统(Global System for Mobile communications，GSM)，码分多址(Code Division Multiple Access，CDMA)系统，时分多址(Time Division Multiple Access，TDMA)系统，宽带码分多址(Wideband Code Division Multiple Access Wireless，WCDMA)，频分多址(Frequency Division Multiple Addressing，FDMA)系统，正交频分多址(Orthogonal Frequency-Division Multiple Access，OFDMA)系统，单载波FDMA(SC-FDMA)系统，通用分组无线业务(General Packet Radio Service，GPRS)系统，长期演进(Long Term Evolution，LTE)系统，以及其他此类通信系统。
另外，本文中描述的扩展覆盖小区指存在扩展覆盖区域的小区，正常小 区指不存在扩展覆盖区域的小区。本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
本发明实施例中提供了一种小区选择及重选方法及一种小区选择及重选装置，方法和装置是基于同一发明构思的，由于方法及装置解决问题的原理相似，因此装置与方法的实施可以相互参见，重复之处不再赘述。
本发明实施例中提供了一种能够针对多覆盖等级小区进行小区选择及重选方法、装置，通过网络侧为各个小区预配置覆盖等级补偿值，用户终端根据测量的各个小区的覆盖等级补偿值以及获取到的网络侧为各个邻小区预配置的覆盖等级补偿值，从各个邻小区中选择目标小区。通过网络侧为各个小区预配置的覆盖等级补偿值能够保证用户终端耗电相对较低的情况下选择信号质量较好的小区进行驻留。
UE链接网络时，会首先选择一个公共路地移动网络(Public LandMobile Network，简称PLMN)。UE在该选择的PLMN中进行小区搜索，搜索到小区后，选择一个小区进行驻留。UE在该小区驻留后，通过监听系统消息，根据邻小区测量规则和小区重选规则，对当前驻留小区以及驻留小区的邻小区进行测量，重新选择一个信号质量好的小区驻留。
本发明实施例提供了一种小区选择装置，如图4所示，该装置设置于用户终端侧，该装置包括：
获取单元401，用于测量小区的信号质量，及获取网络侧为小区预配置的覆盖等级补偿值。
处理单元402，用于根据所述获取单元401测量的小区的信号质量以及获取的小区的覆盖等级补偿值，选择目标小区。
利用本发明实施例提供的方案，通过网络侧为各个小区预配置覆盖等级补偿值，用户终端的处理单元402根据获取单元401测量的各个小区的覆盖等级补偿值以及获取到的网络侧为各个邻小区预配置的覆盖等级补偿值，从各个邻小区中选择目标小区。通过网络侧为各个小区预配置的覆盖等级补偿值能够保证用户终端耗电相对较低的情况下选择信号质量较好的小区进行驻 留。
具体的，获取单元401测量小区的信号质量可以在获取网络侧为小区预配置的覆盖等级补偿值之前，也可以在获取网络侧为小区预配置的覆盖等级补偿值之后，还可以同时进行，本发明实施例对此不作具体限定。
其中，网络侧为小区预配置的覆盖等级补偿值可以是在网规网优时根据小区的承载业务、负载等等情况配置的。
上述小区中可以既包括存在扩展覆盖区域的扩展覆盖小区又包括不存在扩展覆盖区域的正常小区，还可以仅包括正常小区。
可选地，网络侧还可以仅对扩展覆盖小区进行覆盖等级补偿值的预配置，对正常小区不配置覆盖等级补偿值，即为正常小区配置的覆盖等级补偿值为缺省值。当然还可以对正常小区预配置的覆盖等级补偿值为零。则所述获取单元401，具体用于在所述小区包括存在扩展覆盖区域的扩展覆盖小区及不存在扩展覆盖区域的正常小区时获取的正常小区的覆盖等级补偿值为零或者为缺省值。
在其中一个实施例中，所述处理单元402具体用于：
若所述获取单元401获取的小区的的信号质量大于小区的信号质量阈值，将该小区作为满足覆盖等级小区选择条件的小区，该小区的信号质量阈值是根据该小区的最小接收信号阈值和该小区的覆盖等级补偿值确定的；
将满足覆盖等级小区选择条件的小区作为目标小区。
具体的，处理单元402在确定第一个满足覆盖等级小区选择条件的小区后，可以不对其它小区进行判断，则直接驻留在该小区。
具体的，测量的小区的信号质量可以包括小区的参考信号的接收功率值(Reference Signal Receiving Power，简称RSRP)和小区的参考信号接收质量值(Reference Signal Receiving Quality，简称RSRQ)。则小区的信号质量阈值包括针对小区的RSRP的功率阈值，以及针对小区的RSRQ的质量阈值，最小接收信号质量阈值包括小区所要求的最小接收水平和小区所要求的最小质量水平。测量的小区的信号质量还可以仅包括小区的参考信号接收功率值， 则小区的信号质量阈值包括针对小区的RSRP的功率阈值。
为了保证在小区选择时尽量驻留在正常小区，则需满足小区RSRP值大于小区的功率阈值，或者满足小区RSRP值大于小区的功率阈值且小区的RSRQ值大于小区的质量阈值。其中，小区的参考信号接收功率阈值是根据小区所要求的最小接收水平和小区的覆盖等级补偿值确定的，小区的参考信号接收质量阈值是根据小区所要求的最小质量水平和小区的覆盖等级补偿值确定。则处理单元402，具体用于将满足如下覆盖等级小区选择条件的小区作为目标小区：
Srxlev>0且Squal>0，其中：
Srxlev＝Qrxlevmeas–(Qrxlevmin+Qrxlevminoffse+Qcoverageclassoffset)–Pcompensation；
Squal＝Qqualmeas–(Qqualmin+Qqualminoffset+Qcoverageclassoffset)；
其中，Srelex表示小区选择接收水平，Qrelevmeas表示测量到的小区参考信号接收功率值，(Qrxlevmin+Qrxlevminoffse+Qcoverageclassoffset)–Pcompensation表示小区参考信号接收功率阈值；其中Qrelevmin表示小区所要求的最小接收水平，Qrxlevminoffse表示Qrelevmin的偏移量，Qcoverageclassoffset表示网络侧为小区的预配置的覆盖等级补偿值，Pcompensation表示(PEMAX-PPowerClass)和0中的最大值，PEMAX表示用户终端进行上行传输时的最大发射功率，PPowerClass表示用户终端最大射频输出功率；
Squal表示小区选择质量值，Qqualmeas表示测量到的小区参考信号接收质量值，(Qqualmin+Qqualminoffset+Qcoverageclassoffset)表示测量到的小区参考信号接收质量阈值；Qqualmin表示小区所要求的最小质量水平，Qqualminoffset表示Qqualmin的偏移量，Qcoverageclassoffset表示网络侧为小区的预配置的覆盖等级补偿值。
在其中一个实施例中，所述装置还包括：
确定单元，用于在所述获取单元401获取网络侧为小区预配置的覆盖等级补偿值之前，确定用户终端支持驻留在存在扩展覆盖区域的扩展覆盖小区。
具体的，在获取单元401获取网络侧为各个小区预配置的覆盖等级补偿值之前，确定单元确定用户终端支持驻留扩展覆盖小区，则在处理单元402后续选择出满足覆盖等级小区选择条件的小区作为目标小区。在确定单元确 定不支持驻留扩展覆盖小区时，则获取单元401可以测量各个小区的信号质量，处理单元402后续可以通过现有技术提供的小区选择条件(S准则)选择出目标小区。
本发明实施例还提供了一种小区重选装置，如图5所示，该装置包括：
获取单元501，用于测量用户终端当前所在的驻留小区及所述驻留小区的邻小区的信号质量，及获取网络侧为所述驻留小区及邻小区预配置的覆盖等级补偿值；
可选地，所述获取单元501，具体用于在所述各个小区包括存在扩展覆盖区域的扩展覆盖小区及不存在扩展覆盖区域的正常小区时获取的正常小区的覆盖等级补偿值为零或者为缺省值。
处理单元502，用于根据所述获取单元501测量的驻留小区和邻小区的信号质量，以及获取的驻留小区和邻小区的覆盖等级补偿值，从所述邻小区中选择目标小区。
利用本发明实施例提供的方案，通过网络侧为各个小区预配置覆盖等级补偿值，用户终端的处理单元502根据所述获取单元501测量的驻留小区和邻小区的信号质量，以及获取的驻留小区和邻小区的覆盖等级补偿值，从所述邻小区中选择目标小区。通过网络侧为各个小区预配置的覆盖等级补偿值能够保证用户终端耗电相对较低的情况下选择信号质量较好的小区进行驻留。
在其中一个实施例中，所述处理单元502，具体用于从各个邻小区中选择出满足设定条件的邻小区；
针对选择出的各个邻小区分别执行：确定该邻小区是否满足覆盖等级小区重选条件，所述覆盖等级小区重选条件为在规定的时间间隔内该邻小区的信号质量等级大于驻留小区的信号质量等级，该邻小区的信号质量等级根据该邻小区的信号质量与该邻小区的覆盖等级补偿值确定，所述驻留小区的信号质量等级根据驻留小区的信号质量与驻留小区的覆盖等级补偿值确定；
将选择出的各个邻小区中满足覆盖等级小区重选条件的邻小区作为目标 小区。
其中，处理单元502在将确定的满足覆盖等级小区重选条件的邻小区作为目标小区时，可以对确定满足覆盖等级重选条件的邻小区的信号质量等级进行排序，将信号质量等级最大的邻小区作为目标小区。
在其中一个实施例中，所述处理单元502，具体用于将选择出的各个小区中满足如下覆盖等级小区重选条件的邻小区作为目标小区，
在规定的时间间隔内Rn>Rs；
其中，Rs＝Qmeas,s+QHyst-Qcoverageclassoffset,s；
Rn＝Qmeas,n–Qoffset-Qcoverageclassoffset,n；
其中：Rn表示邻小区的信号质量等级；Rs表示驻留小区的信号质量等级；
Qmeas,s表示驻留小区的信号质量中的参考信号接收功率值，QHyst表示驻留小区的参考信号接收功率值的迟滞值，Qcoverageclassoffset,s表示网络侧为驻留小区预配置的覆盖等级补偿值；
Qmeas,n表示邻小区的信号质量中的参考信号接收功率值，Qoffset表示用户终端所在的当前驻留小区和邻小区间的偏移值，Qcoverageclassoffset,n表示网络侧为邻小区预配置的覆盖等级补偿值。
所述处理单元502在从各个邻小区中选择出满足设定条件的邻小区，具体可以以下方式实现：
第一种实现方式，所述处理单元502从各个邻小区中选择出信号质量大于小区的最小接收信号阈值的邻小区。
具体的，该第一种实现方式中，小区选择条件(即S准则)还可以参照上述小区选择方法中的对S准则的描述实现，这里不再赘述。
第二种实现方式，所述处理单元502从各个邻小区中选择出信号质量大于小区的信号质量阈值的邻小区，所述小区的信号质量阈值是根据小区的最小接收信号阈值和小区的覆盖等级补偿值确定的。
基于上述任意小区重选方法实施例，可选地，该装置还包括：
接收单元，在所述获取单元501测量邻小区的信号质量，及获取网络侧 为邻小区预配置的覆盖等级补偿值之前，接收网络侧发送的邻小区列表，所述邻小区列表中携带邻小区标识；
所述获取单元501，具体用于测量接收到的邻小区列表中携带的各个邻小区标识分别对应的邻小区的信号质量、及获取网络侧为邻小区列表中携带的各个邻小区标识分别对应的邻小区的预配置的覆盖等级补偿值。
基于上述任意小区重选方法实施例，可选地，所述获取单元501，还用于获取网络侧为各个邻小区配置的重选优先级信息，其中，邻小区中包括的存在扩展覆盖区域的扩展覆盖小区的重选优先级低于不存在扩展覆盖区域的正常小区的重选优先级；
所述处理单元502，具体用于根据所述获取单元501测量的驻留小区及邻小区的信号质量以及获取的驻留小区及邻小区的覆盖等级补偿值，以及各个邻小区的重选优先级信息，从所述邻小区中选择目标小区。
在其中一个实施例中，用户终端还可以将小区的重选优先级作为选择目标小区的一个选择参数。
获取单元501获取邻小区的重选优先级的方式可以通过以下一种：
第一种实现方式：针对邻小区的重选优先级，网络侧可以通过广播消息发送给用户终端。具体可以通过参数cellReselectionPriority设置，通过系统消息广播系统信息块(System Information Block，简称SIB)发送给用户终端，从而用户终端的获取单元501在接收到邻小区的重选优先级信息，处理单元502根据获取单元501获取到的邻小区重选优先级信息选择目标小区。
第二种实现方式：
网络侧为各个邻小区配置重选优先级，在用户终端释放无线资源时，通过无线资源控制(Radio Resource Control简称RRC)释放连接消息发送给用户终端，从而用户终端的获取单元501接收到邻小区的重选优先级信息，处理单元502并根据获取单元501获取的邻小区的重选优先级信息选择目标小区。
第三种实现方式，重选优先级信息可以携带在网络侧向用户终端发送的 邻小区列表中，从而用户终端接收到邻小区的重选优先级信息，处理单元502并根据获取单元501获取的邻小区的重选优先级信息选择目标小区。
用户终端的获取单元501通过以上方式获取到网络侧为各个邻小区配置的重选优先级信息，其中，邻小区包括的存在扩展覆盖区域的扩展覆盖小区的重选优先级低于不存在扩展覆盖区域的正常小区的重选优先级。则用户终端的处理单元502根据测量的驻留小区及邻小区的信号质量，以及获取的驻留小区及邻小区的覆盖等级补偿值，以及各个邻小区的重选优先级信息选择目标小区。
具体的，所述处理单元502，具体用于确定各个邻小区中包括重选优先级高于用户终端当前所在的驻留小区的重选优先级的邻小区时，从确定的邻小区中选择满足覆盖等级小区选择条件的邻小区作为目标小区，所述覆盖等级小区选择条件满足邻小区的信号质量大于邻小区的信号质量阈值，其中邻小区的信号质量阈值是根据邻小区的最小接收信号阈值和邻小区的覆盖等级补偿值确定的；
若确定重选优先级高于驻留小区的重选优先级的邻小区均不满足覆盖等级小区选择条件或者确定各个邻小区中不包括重选优先级高于用户终端当前所在的驻留小区的重选优先级的邻小区时，确定驻留小区的信号质量在规定时间间隔内低于设定的阈值时，从重选优先级不高于驻留小区的重选优先级的邻小区中选择出满足覆盖等级小区选择条件的邻小区，当选择出的邻小区满足覆盖等级小区重选条件时，则将该邻小区作为目标小区；
所述覆盖等级小区重选条件为在规定的时间间隔内邻小区的信号质量等级大于驻留小区的信号质量等级，其中邻小区的信号质量等级根据邻小区的信号质量与邻小区的覆盖等级补偿值确定，所述驻留小区的信号质量等级根据驻留小区的信号质量与驻留小区的覆盖等级补偿值确定。
需要说明的是，在设置邻小区包括的扩展覆盖小区的重选优先级低于正常小区的重选优先级后，后续可以根据利用现有技术中提供的小区重选方案进行小区重选，不再为邻小区预配置覆盖等级补偿值也能达到保证用户终端 耗电相对较低的情况下选择信号质量较好的小区进行驻留。
具体的，所述处理单元502，具体用于在小区的信号质量包括小区的参考信号接收功率值以及小区的参考信号接收质量值，且从各个邻小区中选择出信号质量大于小区的信号质量阈值的邻小区时，从各个邻小区中选择出满足如下覆盖等级小区选择条件的邻小区：
Srxlev>0且Squal>0，其中：
Srxlev＝Qrxlevmeas–(Qrxlevmin+Qrxlevminoffse+Qcoverageclassoffset)–Pcompensation；
Squal＝Qqualmeas–(Qqualmin+Qqualminoffset+Qcoverageclassoffset)；
其中，Srelex表示小区选择接收水平，Qrelevmeas表示测量到的小区参考信号接收功率值，(Qrxlevmin+Qrxlevminoffse+Qcoverageclassoffset)–Pcompensation表示小区参考信号接收功率阈值；其中Qrelevmin表示小区所要求的最小接收水平，Qrxlevminoffse表示Qrelevmin的偏移量，Qcoverageclassoffset表示网络侧为各个小区的预配置的覆盖等级补偿值，Pcompensation表示(PEMAX-PPowerClass)和0中的最大值，PEMAX表示用户终端进行上行传输时的最大发射功率，PPowerClass表示用户终端最大射频输出功率；
Squal表示小区选择质量值，Qqualmeas表示测量到的小区参考信号接收质量值，(Qqualmin+Qqualminoffset+Qcoverageclassoffset)表示测量到的小区参考信号接收质量阈值；Qqualmin表示小区所要求的最小质量水平，Qqualminoffset表示Qqualmin的偏移量，Qcoverageclassoffset表示网络侧为各个小区的预配置的覆盖等级补偿值。
在其中一个实施例中，该装置还包括：
确定单元，用于在所述获取单元获取网络侧为邻小区预配置的覆盖等级补偿值之前，确定用户终端支持驻留在存在扩展覆盖区域的扩展覆盖小区。若确定单元确定不支持驻留扩展覆盖小区时，则后续用户终端可以通过现有技术提供的小区重选条件选择出目标小区。
本发明实施例还提供了一种小区选择装置，该方法由网络侧执行，如图6所示，该装置包括：
配置单元601，用于为各个小区配置覆盖等级补偿值；
发送单元602，用于将配置单元601为各个小区配置的覆盖等级补偿值发送给用户终端，所述覆盖等级补偿值用于用户终端进行小区选择/重选。
可选地，网络侧的配置单元601还可以仅对各个小区中的扩展覆盖小区进行覆盖等级补偿值的预配置，对正常小区不配置覆盖等级补偿值，即为正常小区配置的覆盖等级补偿值为缺省值。当然还可以对正常小区预配置的覆盖等级补偿值为零。当然可以在网规网优是根据各个小区的承载业务、负载等等情况为各个小区预配置覆盖等级补偿值。
具体的，配置单元601还用于为各个小区配置重选优先级，发送单元602则可以通过以下方式发送给用户终端，从而用户终端接收到邻小区的重选优先级信息，并根据邻小区的重选优先级信息选择目标小区。
第一种实现方式：针对邻小区的重选优先级，网络侧的发送单元602可以通过广播消息发送给用户终端。具体可以通过参数cellReselectionPriority设置，通过系统消息广播系统信息块(System Information Block，简称SIB)发送给用户终端。
第二种实现方式：
网络侧的配置单元601为各个邻小区配置重选优先级，在用户终端释放无线资源时，发送单元602通过无线资源控制(Radio Resource Control简称RRC)释放连接消息发送给用户终端。
第三种实现方式，网络侧的配置单元601为用户终端配置邻小区列表，发送单元601将配置单元601配置的邻小区列表发送给用户终端，该邻小区列表中携带邻小区标识及重选优先级信息。
用户终端通过以上方式获取到网络侧为各个邻小区配置的优先级信息，其中，邻小区包括的扩展覆盖小区的重选优先级低于正常小区的重选优先级。则用户终端根据测量的驻留小区及邻小区的信号质量以及获取的驻留小区及邻小区补偿值，以及各个邻小区的重选优先级信息选择目标小区。
本发明实施例提供了一种小区选择方法，如图7所示，该方法可以由用户终端执行，该方法包括：
步骤701，测量小区的信号质量，及获取网络侧为小区预配置的覆盖等级补偿值。
具体的，测量小区的信号质量可以在获取网络侧为小区预配置的覆盖等级补偿值之前，也可以在获取网络侧为小区预配置的覆盖等级补偿值之后，还可以同时进行，本发明实施例对此不作具体限定。
其中，网络侧为小区预配置的覆盖等级补偿值可以是在网规网优时根据各个小区的承载业务、负载等等情况配置的。
上述小区中可以既包括存在扩展覆盖区域的扩展覆盖小区又包括不存在扩展覆盖区域的正常小区，还可以仅包括正常小区。
可选地，网络侧还可以仅对扩展覆盖小区进行覆盖等级补偿值的预配置，对正常小区不配置覆盖等级补偿值，即为正常小区配置的覆盖等级补偿值为缺省值。当然还可以对正常小区预配置的覆盖等级补偿值为零。
步骤702，根据测量的小区的信号质量以及获取的小区的覆盖等级补偿值，选择目标小区。
在其中一个实施例中，测量小区的信号质量，及获取网络侧为小区预配置的覆盖等级补偿值之后，具体可以通过如下方式选择目标小区：
确定小区的信号质量质量大于该小区的信号质量阈值时，则将小区作为满足覆盖等级小区选择条件的小区；小区的信号质量阈值是根据小区的最小接收信号阈值和该小区的覆盖等级补偿值确定的；
将该满足覆盖等级小区选择条件的小区作为目标小区。
具体的，用户终端在确定第一个满足覆盖等级小区选择条件的小区后，可以不对其它小区进行判断，则直接驻留在该小区。
具体的，测量的小区的信号质量可以包括小区的参考信号的接收功率值(Reference Signal Receiving Power，简称RSRP)和小区的参考信号接收质量值(Reference Signal Receiving Quality，简称RSRQ)。则小区的信号质量阈值包括针对小区的RSRP的功率阈值，以及针对小区的RSRQ的质量阈值，最小接收信号质量阈值包括小区所要求的最小接收水平和小区所要求的最小质 量水平。测量的小区的信号质量还可以仅包括小区的参考信号接收功率值，则小区的信号质量阈值包括针对小区的RSRP的功率阈值。
为了保证在小区选择时尽量驻留在正常小区，则需满足小区RSRP值大于小区的功率阈值，或者满足小区RSRP值大于小区的功率阈值且小区的RSRQ值大于小区的质量阈值。其中，小区的参考信号接收功率阈值是根据小区所要求的最小接收水平和小区的覆盖等级补偿值确定的，小区的参考信号接收质量阈值是根据小区所要求的最小质量水平和小区的覆盖等级补偿值确定。
具体的，覆盖等级小区选择条件可以满足如下公式：
Srxlev>0且Squal>0，其中：
Srxlev＝Qrxlevmeas–(Qrxlevmin+Qrxlevminoffse+Qcoverageclassoffset)–Pcompensation；
Squal＝Qqualmeas–(Qqualmin+Qqualminoffset+Qcoverageclassoffset)；
其中，(Qrxlevmin+Qrxlevminoffse+Qcoverageclassoffset)–Pcompensation表示小区的参考信号接收功率阈值；Qqualmin+Qqualminoffset+Qcoverageclassoffset表示小区的参考信号接收质量阈值。
上述公式中的各个参数值的具体解释情况如下表1所示：
表1
Figure PCTCN2014090499-appb-000001
在其中一个实施例中，在获取网络侧为小区预配置的覆盖等级补偿值之 前，用户终端确定自身支持驻留扩展覆盖小区，则在后续选择出满足覆盖等级小区选择条件的小区作为目标小区。用户终端在确定不支持驻留扩展覆盖小区时，则可以测量小区的信号质量，后续可以通过现有技术提供的小区选择条件(S准则)选择出目标小区。
小区的信号质量可以包括小区的参考信号接收功率值以及小区的参考信号接收质量值，其中，小区选择条件(即S准则)满足如下公式：
Srxlev>0且Squal>0，其中：
Srxlev＝Qrxlevmeas–(Qrxlevmin+Qrxlevminoffse)–Pcompensation
Squal＝Qqualmeas–(Qqualmin+Qqualminoffset)
上述公式中的各个参数值的具体解释情况如下表2所示：
表2
Squal 小区选择质量，只适用于FDD小区
Srxlev 小区选择接收水平
Qqualmeas 测量到的小区的RSRQ，只适用于FDD小区
Qrxlevmeas 测量到的小区的RSRP
Qqualmin 小区内所要求的最小质量水平，只适用于FDD小区
Qrxlevmin 小区内所要求的最小接收水平
Pcompensation 最大值(PEMAX-PPowerClass,0)
PEMAX UE进行上行传输时的最大发射功率
PPowerClass UE最大射频发射功率
Qrxlevminoffse Qrelevmin的偏移量
Qqualminoffset Qqualmin的偏移量
本发明实施例还提供了一种小区重选方法，如图8所示，该方法包括：
步骤801，测量用户终端当前所在的驻留小区及所述驻留小区的邻小区的信号质量，及获取网络侧为所述驻留小区及邻小区预配置的覆盖等级补偿值；
其中，测量驻留小区的信号质量，及获取网络侧为驻留小区预配置的覆盖等级补偿值，可以在测量邻小区和信号质量及获取网络侧为邻小区预配置的覆盖等级补偿值之前，也可以在之后，还可以同时，具体步骤的时间先后本发明实施例不做具体限定。
可选地，网络侧还可以仅对扩展覆盖小区进行覆盖等级补偿值的预配置， 对正常小区不配置覆盖等级补偿值，即为正常小区配置的覆盖等级补偿值为缺省值。当然还可以对正常小区预配置的覆盖等级补偿值为零。当然可以在网规网优时根据各个小区的承载业务、负载等等情况为各个小区预配置覆盖等级补偿值。
具体的，网络侧可以为用户终端配置邻小区列表，邻小区的列表中携带邻小区标识，那么用户终端可以通过接收网络侧发送的邻小区列表获取邻小区的信息，具体的用户终端则测量接收到的邻小区列表中携带的各个邻小区标识分别对应的邻小区的信号质量、及获取网络侧为邻小区列表中携带的各个邻小区标识分别对应的邻小区的预配置的覆盖等级补偿值。
步骤802，根据测量的驻留小区和邻小区的信号质量，以及获取的驻留小区和邻小区的覆盖等级补偿值，从所述邻小区中选择目标小区。
根据测量的驻留小区和邻小区的信号质量，以及获取的驻留小区和邻小区的覆盖等级补偿值，从所述邻小区中选择目标小区，具体可以通过以下方式实现：
首先从各个邻小区中选择出满足设定条件的邻小区；
针对选择出的各个邻小区分别执行，确定该邻小区是否满足覆盖等级小区重选条件，所述覆盖等级小区重选条件为在规定的时间间隔内该邻小区的信号质量等级大于驻留小区的信号质量等级，该邻小区的信号质量等级根据该邻小区的信号质量与该邻小区的覆盖等级补偿值确定，所述驻留小区的信号质量等级根据驻留小区的信号质量与驻留小区的覆盖等级补偿值确定；
将选择出的各个邻小区中确定的满足覆盖等级小区重选条件的邻小区作为目标小区。
其中，将确定的满足覆盖等级小区重选条件的邻小区作为目标小区，可以对确定满足覆盖等级重选条件的邻小区的信号质量等级进行排序，将信号质量等级最大的邻小区作为目标小区。
在其中一个实施例中，从各个邻小区中选择出满足设定条件的邻小区，具体可以以下方式实现：
第一种实现方式：
从各个邻小区中选择出满足小区选择条件的邻小区，小区选择条件满足该小区的信号质量大于小区的最小接收信号阈值。
具体的，该第一种实现方式中，小区选择条件(即S准则)还可以参照上述小区选择方法中的对S准则的描述实现，这里不再赘述。
第二种实现方式：
从各个邻小区中选择出满足覆盖等级小区选择条件的邻小区。该覆盖等级选择条件满足小区的信号质量大于小区的信号质量阈值的邻小区，所述小区的信号质量阈值是根据小区的最小接收信号阈值和小区的覆盖等级补偿值确定的。
其中，第二种实现方式中所述的覆盖等级小区选择条件可以参照上述小区选择方法中的覆盖等级小区选择条件进行实现，在此不再赘述。
在其中一个实施例中，小区的信号质量包括小区的参考信号接收功率值，覆盖等级小区重选条件可以满足以下公式：
在规定的时间间隔内Rn>Rs；
其中，Rs＝Qmeas,s+QHyst-Qcoverageclassoffset,s；
Rn＝Qmeas,n–Qoffset-Qcoverageclassoffset,n；
上述公式中的各个参数解释如下：
Qmeas：表示小区的RSRP值；其中Qmeas,s是针对用户终端所在的当前驻留小区而言的，Qmeas,n是针对用户终端的邻小区而言的。
QHyst：表示驻留小区的RSRP的迟滞值。
Qoffset：代表用户终端所在的当前驻留小区和邻小区间的偏移值。
Qcoverageclassoffset,s表示网络侧为驻留小区预配置的覆盖等级补偿值，Qcoverageclassoffset,n表示网络侧为邻小区预配置的覆盖等级补偿值。
在其中一个实施例中，用户终端还可以将小区的重选优先级作为选择目标小区的一个选择参数。
用户终端获取邻小区的重选优先级的方式可以通过以下一种：
第一种实现方式：针对邻小区的重选优先级，网络侧可以通过广播消息发送给用户终端。具体可以通过参数cellReselectionPriority设置，通过系统消息广播系统信息块(System Information Block，简称SIB)发送给用户终端，从而用户终端接收到邻小区的重选优先级信息，并根据邻小区重选优先级信息选择目标小区。
第二种实现方式：
网络侧为各个邻小区配置重选优先级，在用户终端释放无线资源时，通过无线资源控制(Radio Resource Control简称RRC)释放连接消息发送给用户终端，从而用户终端接收到邻小区的重选优先级信息，并根据邻小区的重选优先级信息选择目标小区。
第三种实现方式，重选优先级信息可以携带在网络侧向用户终端发送的邻小区列表中，从而用户终端接收到邻小区的重选优先级信息，并根据邻小区的重选优先级信息选择目标小区。
用户终端通过以上方式获取到网络侧为各个邻小区配置的重选优先级信息，其中，邻小区包括的存在扩展覆盖区域的扩展覆盖小区的重选优先级低于不存在扩展覆盖区域的正常小区的重选优先级。则用户终端根据测量的驻留小区及邻小区的信号质量，以及获取的驻留小区及邻小区的覆盖等级补偿值，以及各个邻小区的重选优先级信息选择目标小区。
具体的，用户终端在进行小区重选时，当确定各个邻小区中存在重选优先级高于用户终端当前所在的驻留小区的重选优先级的邻小区时，则用户终端测量确定的邻小区的信号质量，在邻小区满足覆盖等级小区选择条件时，将该邻小区作为目标小区。若确定重选优先级高于驻留小区的重选优先级的邻小区均不满足覆盖等级小区选择条件时，用户终端测量驻留小区的信号质量在规定时间间隔内是否低于设定的阈值，当测量驻留小区的信号质量在规定的时间间隔内低于设定的阈值时，从重选优先级不高于驻留小区的重选优先级的邻小区中选择出满足覆盖等级小区选择条件的邻小区，当选择出的邻小区满足覆盖等级小区重选条件时，则将该邻小区作为目标小区。若确定各 个小区的重选优先级均不高于用户终端所在的驻留小区的重选优先级的邻小区时，用户终端测量驻留小区的信号质量在规定时间间隔内是否低于设定的阈值，当测量驻留小区的信号质量在规定的时间间隔内低于设定的阈值时，从各个邻小区中选择出满足覆盖等级小区选择条件的邻小区，当选择出的邻小区满足覆盖等级小区重选条件时，则将该邻小区作为目标小区。
需要说明的是，在设置邻小区包括的扩展覆盖小区的重选优先级低于正常小区的重选优先级后，后续可以根据利用现有技术中提供的小区重选方案进行小区重选，不再为邻小区预配置覆盖等级补偿值也能达到保证用户终端耗电相对较低的情况下选择信号质量较好的小区进行驻留。
在其中一个实施例中，在获取网络侧为邻小区预配置的覆盖等级补偿值之前，该方法还可以包括：确定用户终端支持驻留在存在扩展覆盖区域的扩展覆盖小区。若用户终端确定不支持驻留扩展覆盖小区时，则后续用户终端可以通过现有技术提供的小区重选条件选择出目标小区。
本发明实施例还提供了一种小区选择方法，该方法由网络侧执行，如图9所示，该方法包括：
步骤901，为各个小区配置覆盖等级补偿值；
步骤902，将为各个小区配置的覆盖等级补偿值发送给用户终端，所述覆盖等级补偿值用于用户终端进行小区选择/重选。
可选地，网络侧还可以仅对各个小区中的扩展覆盖小区进行覆盖等级补偿值的预配置，对正常小区不配置覆盖等级补偿值，即为正常小区配置的覆盖等级补偿值为缺省值。当然还可以对正常小区预配置的覆盖等级补偿值为零。当然可以在网规网优是根据各个小区的承载业务、负载等等情况为各个小区预配置覆盖等级补偿值。
具体的，该方法还包括为各个小区配置重选优先级，可以通过以下方式发送给用户终端，从而用户终端接收到邻小区的重选优先级信息，并根据邻小区的重选优先级信息选择目标小区。
第一种实现方式：针对邻小区的重选优先级，网络侧可以通过广播消息 发送给用户终端。具体可以通过参数cellReselectionPriority设置，通过系统消息广播系统信息块(System Information Block，简称SIB)发送给用户终端。
第二种实现方式：
网络侧为各个邻小区配置重选优先级，在用户终端释放无线资源时，通过无线资源控制(Radio Resource Control简称RRC)释放连接消息发送给用户终端。
第三种实现方式，网络侧为用户终端配置邻小区列表，并发送给用户终端，该邻小区列表中携带邻小区标识及重选优先级信息。
用户终端通过以上方式获取到网络侧为各个邻小区配置的优先级信息，其中，邻小区包括的扩展覆盖小区的重选优先级低于正常小区的重选优先级。则用户终端根据测量的驻留小区及邻小区的信号质量以及获取的驻留小区及邻小区补偿值，以及各个邻小区的重选优先级信息选择目标小区。
基于与上述小区选择方法实施例同样的发明构思，本发明实施例还提供了一种小区选择装置，如图10所示，该装置包括处理器1001和与处理器1001连接的存储器1002。
所述存储器1002，用于存放程序。具体地，程序可以包括程序代码，所述程序代码包括计算机操作指令。存储器1002可能包含随机存取存储器(random access memory，简称RAM)，也可能还包括非易失性存储器(non-volatile memory)，例如至少一个磁盘存储器。
所述处理器1001执行所述存储器1002所存放的程序，实现本发明图7所示的小区选择方法，包括：
测量小区的信号质量，及获取网络侧为各个小区预配置的覆盖等级补偿值；
其中，所述小区包括存在扩展覆盖区域的扩展覆盖小区及不存在扩展覆盖区域的正常小区，则所述获取的正常小区的覆盖等级补偿值为零或者为缺省值。
根据测量的小区的信号质量以及获取的各个小区的覆盖等级补偿值，选 择目标小区。
具体的，根据测量的小区的信号质量以及获取的小区的覆盖等级补偿值，选择目标小区，包括：
若小区的的信号质量大于小区的信号质量阈值，则将小区作为满足覆盖等级小区选择条件的小区，小区的信号质量阈值是根据小区的最小接收信号阈值和小区的覆盖等级补偿值确定的；
将该满足覆盖等级小区选择条件的小区作为目标小区。
可选地，所述小区的信号质量包括小区的参考信号接收功率以及小区参考信号接收质量值，所述覆盖等级小区选择条件满足如下公式：
Srxlev>0且Squal>0，其中：
Srxlev＝Qrxlevmeas–(Qrxlevmin+Qrxlevminoffse+Qcoverageclassoffset)–Pcompensation；
Squal＝Qqualmeas–(Qqualmin+Qqualminoffset+Qcoverageclassoffset)；
其中，Srelex表示小区选择接收水平，Qrelevmeas表示测量到的小区参考信号接收功率值，(Qrxlevmin+Qrxlevminoffse+Qcoverageclassoffset)–Pcompensation表示小区参考信号接收功率阈值；其中Qrelevmin表示小区所要求的最小接收水平，Qrxlevminoffse表示Qrelevmin的偏移量，Qcoverageclassoffset表示网络侧为小区的预配置的覆盖等级补偿值，Pcompensation表示(PEMAX-PPowerClass)和0中的最大值，PEMAX表示用户终端进行上行传输时的最大发射功率，PPowerClass表示用户终端最大射频输出功率；
Squal表示小区选择质量值，Qqualmeas表示测量到的小区参考信号接收质量值，(Qqualmin+Qqualminoffset+Qcoverageclassoffset)表示测量到的小区参考信号接收质量阈值；Qqualmin表示小区所要求的最小质量水平，Qqualminoffset表示Qqualmin的偏移量，Qcoverageclassoffset表示网络侧为小区的预配置的覆盖等级补偿值。
可选地，在获取网络侧为小区预配置的覆盖等级补偿值之前，确定用户终端支持驻留在存在扩展覆盖区域的扩展覆盖小区。
本发明实施例中与小区选择方法实施例重复的部分不再赘述。
基于与上述小区重选方法实施例同样的发明构思，本发明实施例还提供了一种小区重选装置，如图11所示，该装置包括处理器1101和与处理器1101 连接的存储器1102。
所述存储器1102，用于存放程序。具体地，程序可以包括程序代码，所述程序代码包括计算机操作指令。存储器1102可能包含随机存取存储器(random access memory，简称RAM)，也可能还包括非易失性存储器(non-volatile memory)，例如至少一个磁盘存储器。
所述处理器1101执行所述存储器1102所存放的程序，实现本发明图8所示的小区重选方法，包括：
测量用户终端当前所在的驻留小区及所述驻留小区的邻小区的信号质量，及获取网络侧为所述驻留小区及邻小区预配置的覆盖等级补偿值；
根据测量的驻留小区和邻小区的信号质量，以及获取的驻留小区和邻小区的覆盖等级补偿值，从所述邻小区中选择目标小区。
本发明实施例中与小区重选方法实施例重复的部分不再赘述。
本领域内的技术人员应明白，本发明的实施例可提供为方法、系统、或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器 中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。
显然，本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本发明实施例的精神和范围。这样，倘若本发明实施例的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (32)

  1. 一种小区选择装置，其特征在于，包括：
    获取单元，用于测量小区的信号质量，及获取网络侧为小区预配置的覆盖等级补偿值；
    处理单元，用于根据所述获取单元测量的小区的信号质量以及获取的小区的覆盖等级补偿值，选择目标小区。
  2. 如权利要求1所述的装置，其特征在于，所述处理单元具体用于：
    若所述获取单元获取的小区的的信号质量大于小区的信号质量阈值，将该小区作为满足覆盖等级小区选择条件的小区，该小区的信号质量阈值是根据该小区的最小接收信号阈值和该小区的覆盖等级补偿值确定的；
    将满足覆盖等级小区选择条件的小区作为目标小区。
  3. 如权利要求2所述的装置，其特征在于，所述处理单元，具体用于在所述小区的信号质量包括小区的参考信号接收功率以及小区参考信号接收质量值时，将满足如下覆盖等级小区选择条件的小区作为目标小区：
    Srxlev>0且Squal>0，其中：
    Srxlev＝Qrxlevmeas–(Qrxlevmin+Qrxlevminoffse+Qcoverageclassoffset)–Pcompensation；
    Squal＝Qqualmeas–(Qqualmin+Qqualminoffset+Qcoverageclassoffset)；
    其中，Srelex表示小区选择接收水平，Qrelevmeas表示测量到的小区参考信号接收功率值，(Qrxlevmin+Qrxlevminoffse+Qcoverageclassoffset)–Pcompensation表示小区参考信号接收功率阈值；其中Qrelevmin表示小区所要求的最小接收水平，Qrxlevminoffse表示Qrelevmin的偏移量，Qcoverageclassoffset表示网络侧为小区的预配置的覆盖等级补偿值，Pcompensation表示(PEMAX-PPowerClass)和0中的最大值，PEMAX表示用户终端进行上行传输时的最大发射功率，PPowerClass表示用户终端最大射频输出功率；
    Squal表示小区选择质量值，Qqualmeas表示测量到的小区参考信号接收质量值，(Qqualmin+Qqualminoffset+Qcoverageclassoffset)表示测量到的小区参考信号接收质量阈值；Qqualmin表示小区所要求的最小质量水平，Qqualminoffset表示Qqualmin的偏 移量，Qcoverageclassoffset表示网络侧为小区的预配置的覆盖等级补偿值。
  4. 如权利要求1～3任一项所述的装置，其特征在于，所述获取单元，具体用于在所述小区包括存在扩展覆盖区域的扩展覆盖小区及不存在扩展覆盖区域的正常小区时获取的正常小区的覆盖等级补偿值为零或者为缺省值。
  5. 如权利要求1～4任一项所述的装置，其特征在于，所述装置还包括：
    确定单元，用于在所述获取单元获取网络侧为小区预配置的覆盖等级补偿值之前，确定用户终端支持驻留在存在扩展覆盖区域的扩展覆盖小区。
  6. 一种小区重选装置，其特征在于，包括：
    获取单元，用于测量用户终端当前所在的驻留小区及所述驻留小区的邻小区的信号质量，及获取网络侧为所述驻留小区及邻小区预配置的覆盖等级补偿值；
    处理单元，用于根据所述获取单元测量的驻留小区和邻小区的信号质量，以及获取的驻留小区和邻小区的覆盖等级补偿值，从所述邻小区中选择目标小区。
  7. 如权利要求6所述的装置，其特征在于，所述处理单元，具体用于从各个邻小区中选择出满足设定条件的邻小区；
    针对选择出的各个邻小区分别执行：确定该邻小区是否满足覆盖等级小区重选条件，所述覆盖等级小区重选条件为在规定的时间间隔内该邻小区的信号质量等级大于驻留小区的信号质量等级，该邻小区的信号质量等级根据该邻小区的信号质量与该邻小区的覆盖等级补偿值确定，所述驻留小区的信号质量等级根据驻留小区的信号质量与驻留小区的覆盖等级补偿值确定；
    将选择出的各个邻小区中满足覆盖等级小区重选条件的邻小区作为目标小区。
  8. 如权利要求7所述的装置，其特征在于，所述处理单元，用于将选择出的各个小区中满足如下覆盖等级小区重选条件的邻小区作为目标小区，
    在规定的时间间隔内Rn>Rs；
    其中，Rs＝Qmeas,s+QHyst-Qcoverageclassoffset,s；
    Rn＝Qmeas,n–Qoffset-Qcoverageclassoffset,n；
    其中：Rn表示邻小区的信号质量等级；Rs表示驻留小区的信号质量等级；
    Qmeas,s表示驻留小区的信号质量中的参考信号接收功率值，QHyst表示驻留小区的参考信号接收功率值的迟滞值，Qcoverageclassoffset,s表示网络侧为驻留小区预配置的覆盖等级补偿值；
    Qmeas,n表示邻小区的信号质量中的参考信号接收功率值，Qoffset表示用户终端所在的当前驻留小区和邻小区间的偏移值，Qcoverageclassoffset,n表示网络侧为邻小区预配置的覆盖等级补偿值。
  9. 如权利要求7或8所述的装置，其特征在于，所述处理单元具体用于：
    从各个邻小区中选择出信号质量大于小区的最小接收信号阈值的邻小区；或者
    从各个邻小区中选择出信号质量大于小区的信号质量阈值的邻小区，所述小区的信号质量阈值是根据小区的最小接收信号阈值和小区的覆盖等级补偿值确定的。
  10. 如权利要求6～9任一项所述的装置，其特征在于，还包括：
    接收单元，在所述获取单元测量邻小区的信号质量，及获取网络侧为邻小区预配置的覆盖等级补偿值之前，接收网络侧发送的邻小区列表，所述邻小区列表中携带邻小区标识；
    所述获取单元，具体用于测量所述接收单元接收到的邻小区列表中携带的各个邻小区标识分别对应的邻小区的信号质量、及获取网络侧为邻小区列表中携带的各个邻小区标识分别对应的邻小区的预配置的覆盖等级补偿值。
  11. 如权利要求6～10任一项所述的装置，其特征在于，所述获取单元，
    还用于获取网络侧为各个邻小区配置的重选优先级信息，其中，邻小区中包括的存在扩展覆盖区域的扩展覆盖小区的重选优先级低于不存在扩展覆盖区域的正常小区的重选优先级；
    所述处理单元，具体用于根据所述获取单元测量的驻留小区及邻小区的信号质量以及获取的驻留小区及邻小区的覆盖等级补偿值，以及各个邻小区 的重选优先级信息，从所述邻小区中选择目标小区。
  12. 如权利要求11所述的装置，其特征在于，所述处理单元，具体用于确定各个邻小区中包括重选优先级高于用户终端当前所在的驻留小区的重选优先级的邻小区时，从确定的邻小区中选择满足覆盖等级小区选择条件的邻小区作为目标小区，所述覆盖等级小区选择条件满足邻小区的信号质量大于邻小区的信号质量阈值，其中邻小区的信号质量阈值是根据邻小区的最小接收信号阈值和邻小区的覆盖等级补偿值确定的；
    若确定重选优先级高于驻留小区的重选优先级的邻小区均不满足覆盖等级小区选择条件或者确定各个邻小区中不包括重选优先级高于用户终端当前所在的驻留小区的重选优先级的邻小区时，确定驻留小区的信号质量在规定时间间隔内低于设定的阈值时，从重选优先级不高于驻留小区的重选优先级的邻小区中选择出满足覆盖等级小区选择条件的邻小区，当选择出的邻小区满足覆盖等级小区重选条件时，则将该邻小区作为目标小区；
    所述覆盖等级小区重选条件为在规定的时间间隔内邻小区的信号质量等级大于驻留小区的信号质量等级，其中邻小区的信号质量等级根据邻小区的信号质量与邻小区的覆盖等级补偿值确定，所述驻留小区的信号质量等级根据驻留小区的信号质量与驻留小区的覆盖等级补偿值确定。
  13. 如权利要求9或12所述的装置，其特征在于，所述处理单元，具体用于在小区的信号质量包括小区的参考信号接收功率值以及小区的参考信号接收质量值，且从各个邻小区中选择出信号质量大于小区的信号质量阈值的邻小区时，从各个邻小区中选择出满足如下覆盖等级小区选择条件的邻小区：
    Srxlev>0且Squal>0，其中：
    Srxlev＝Qrxlevmeas–(Qrxlevmin+Qrxlevminoffse+Qcoverageclassoffset)–Pcompensation；
    Squal＝Qqualmeas–(Qqualmin+Qqualminoffset+Qcoverageclassoffset)；
    其中，Srelex表示小区选择接收水平，Qrelevmeas表示测量到的小区参考信号接收功率值，(Qrxlevmin+Qrxlevminoffse+Qcoverageclassoffset)–Pcompensation表示小区参考信号接收功率阈值；其中Qrelevmin表示小区所要求的最小接收水平，Qrxlevminoffse表 示Qrelevmin的偏移量，Qcoverageclassoffset表示网络侧为各个小区的预配置的覆盖等级补偿值，Pcompensation表示(PEMAX-PPowerClass)和0中的最大值，PEMAX表示用户终端进行上行传输时的最大发射功率，PPowerClass表示用户终端最大射频输出功率；
    Squal表示小区选择质量值，Qqualmeas表示测量到的小区参考信号接收质量值，(Qqualmin+Qqualminoffset+Qcoverageclassoffset)表示测量到的小区参考信号接收质量阈值；Qqualmin表示小区所要求的最小质量水平，Qqualminoffset表示Qqualmin的偏移量，Qcoverageclassoffset表示网络侧为各个小区的预配置的覆盖等级补偿值。
  14. 如权利要求6～13所述的方法，其特征在于，所述获取单元，具体用于在所述各个小区包括存在扩展覆盖区域的扩展覆盖小区及不存在扩展覆盖区域的正常小区时获取的正常小区的覆盖等级补偿值为零或者为缺省值。
  15. 如权利要求6～14任一项所述的装置，其特征在于，还包括：
    确定单元，用于在所述获取单元获取网络侧为邻小区预配置的覆盖等级补偿值之前，确定用户终端支持驻留在存在扩展覆盖区域的扩展覆盖小区。
  16. 一种小区选择装置，其特征在于，包括：
    配置单元，用于为各个小区配置覆盖等级补偿值；
    发送单元，用于将所述配置单元为各个小区配置的覆盖等级补偿值发送给用户终端，所述覆盖等级补偿值用于用户终端进行小区选择/重选。
  17. 一种小区选择方法，其特征在于，包括：
    测量小区的信号质量，及获取网络侧为各个小区预配置的覆盖等级补偿值；
    根据测量的小区的信号质量以及获取的各个小区的覆盖等级补偿值，选择目标小区。
  18. 如权利要求17所述的方法，其特征在于，根据测量的小区的信号质量以及获取的小区的覆盖等级补偿值，选择目标小区，包括：
    若小区的的信号质量大于小区的信号质量阈值，则将小区作为满足覆盖等级小区选择条件的小区，小区的信号质量阈值是根据小区的最小接收信号 阈值和小区的覆盖等级补偿值确定的；
    将该满足覆盖等级小区选择条件的小区作为目标小区。
  19. 如权利要求18所述的方法，其特征在于，所述小区的信号质量包括小区的参考信号接收功率以及小区参考信号接收质量值，所述覆盖等级小区选择条件满足如下公式：
    Srxlev>0且Squal>0，其中：
    Srxlev＝Qrxlevmeas–(Qrxlevmin+Qrxlevminoffse+Qcoverageclassoffset)–Pcompensation；
    Squal＝Qqualmeas–(Qqualmin+Qqualminoffset+Qcoverageclassoffset)；
    其中，Srelex表示小区选择接收水平，Qrelevmeas表示测量到的小区参考信号接收功率值，(Qrxlevmin+Qrxlevminoffse+Qcoverageclassoffset)–Pcompensation表示小区参考信号接收功率阈值；其中Qrelevmin表示小区所要求的最小接收水平，Qrxlevminoffse表示Qrelevmin的偏移量，Qcoverageclassoffset表示网络侧为小区的预配置的覆盖等级补偿值，Pcompensation表示(PEMAX-PPowerClass)和0中的最大值，PEMAX表示用户终端进行上行传输时的最大发射功率，PPowerClass表示用户终端最大射频输出功率；
    Squal表示小区选择质量值，Qqualmeas表示测量到的小区参考信号接收质量值，(Qqualmin+Qqualminoffset+Qcoverageclassoffset)表示测量到的小区参考信号接收质量阈值；Qqualmin表示小区所要求的最小质量水平，Qqualminoffset表示Qqualmin的偏移量，Qcoverageclassoffset表示网络侧为小区的预配置的覆盖等级补偿值。
  20. 如权利要求17～19任一项所述的方法，其特征在于，所述小区包括存在扩展覆盖区域的扩展覆盖小区及不存在扩展覆盖区域的正常小区，则所述获取的正常小区的覆盖等级补偿值为零或者为缺省值。
  21. 如权利要求17～20任一项所述的方法，其特征在于，在获取网络侧为小区预配置的覆盖等级补偿值之前，所述方法还包括：
    确定用户终端支持驻留在存在扩展覆盖区域的扩展覆盖小区。
  22. 一种小区重选方法，其特征在于，包括：
    测量用户终端当前所在的驻留小区及所述驻留小区的邻小区的信号质量，及获取网络侧为所述驻留小区及邻小区预配置的覆盖等级补偿值；
    根据测量的驻留小区和邻小区的信号质量，以及获取的驻留小区和邻小区的覆盖等级补偿值，从所述邻小区中选择目标小区。
  23. 如权利要求22所述的方法，其特征在于，根据测量的驻留小区和邻小区的信号质量，以及获取的驻留小区和邻小区的覆盖等级补偿值，从所述邻小区中选择目标小区，包括：
    从各个邻小区中选择出满足设定条件的邻小区；
    针对选择出的各个邻小区分别执行：确定该邻小区是否满足覆盖等级小区重选条件，所述覆盖等级小区重选条件为在规定的时间间隔内该邻小区的信号质量等级大于驻留小区的信号质量等级，该邻小区的信号质量等级根据该邻小区的信号质量与该邻小区的覆盖等级补偿值确定，所述驻留小区的信号质量等级根据驻留小区的信号质量与驻留小区的覆盖等级补偿值确定；
    将选择出的各个邻小区中满足覆盖等级小区重选条件的邻小区作为目标小区。
  24. 如权利要求23所述的方法，其特征在于，所述覆盖等级小区重选条件满足如下公式：
    在规定的时间间隔内Rn>Rs；
    其中，Rs＝Qmeas,s+QHyst-Qcoverageclassoffset,s；
    Rn＝Qmeas,n–Qoffset-Qcoverageclassoffset,n；
    其中：Rn表示邻小区的信号质量等级；Rs表示驻留小区的信号质量等级；
    Qmeas,s表示驻留小区的信号质量中的参考信号接收功率值，QHyst表示驻留小区的参考信号接收功率值的迟滞值，Qcoverageclassoffset,s表示网络侧为驻留小区预配置的覆盖等级补偿值；
    Qmeas,n表示邻小区的信号质量中的参考信号接收功率值，Qoffset表示用户终端所在的当前驻留小区和邻小区间的偏移值，Qcoverageclassoffset,n表示网络侧为邻小区预配置的覆盖等级补偿值。
  25. 如权利要求23或24所述的方法，其特征在于，从各个邻小区中选择出满足设定条件的邻小区，包括：
    从各个邻小区中选择出信号质量大于小区的最小接收信号阈值的邻小区；或者
    从各个邻小区中选择出信号质量大于小区的信号质量阈值的邻小区，所述小区的信号质量阈值是根据小区的最小接收信号阈值和小区的覆盖等级补偿值确定的。
  26. 如权利要求22～25任一项所述的方法，其特征在于，测量邻小区的信号质量，及获取网络侧为邻小区预配置的覆盖等级补偿值之前，所述方法还包括：
    接收网络侧发送的邻小区列表，所述邻小区列表中携带邻小区标识；
    测量邻小区的信号质量，及获取网络侧为邻小区预配置的覆盖等级补偿值，具体包括：
    测量接收到的邻小区列表中携带的各个邻小区标识分别对应的邻小区的信号质量、及获取网络侧为邻小区列表中携带的各个邻小区标识分别对应的邻小区的预配置的覆盖等级补偿值。
  27. 如权利要求22～26任一项所述的方法，其特征在于，所述方法还包括：
    获取网络侧为各个邻小区配置的重选优先级信息，其中，邻小区中包括的存在扩展覆盖区域的扩展覆盖小区的重选优先级低于不存在扩展覆盖区域的正常小区的重选优先级；
    根据测量的驻留小区及邻小区的信号质量以及获取的驻留小区及邻小区的覆盖等级补偿值，从所述邻小区中选择目标小区，具体包括：
    根据测量的驻留小区及邻小区的信号质量以及获取的驻留小区及邻小区的覆盖等级补偿值，以及各个邻小区的重选优先级信息，从所述邻小区中选择目标小区。
  28. 如权利要求27所述的方法，其特征在于，根据测量的驻留小区及邻小区的信号质量以及获取的驻留小区及邻小区的覆盖等级补偿值，以及各个邻小区的重选优先级信息，从所述邻小区中选择目标小区，包括：
    确定各个邻小区中包括重选优先级高于用户终端当前所在的驻留小区的重选优先级的邻小区时，从确定的邻小区中选择满足覆盖等级小区选择条件的邻小区作为目标小区，所述覆盖等级小区选择条件满足邻小区的信号质量大于邻小区的信号质量阈值，其中邻小区的信号质量阈值是根据邻小区的最小接收信号阈值和邻小区的覆盖等级补偿值确定的；
    若确定重选优先级高于驻留小区的重选优先级的邻小区均不满足覆盖等级小区选择条件或者确定各个邻小区中不包括重选优先级高于用户终端当前所在的驻留小区的重选优先级的邻小区时，确定驻留小区的信号质量在规定时间间隔内低于设定的阈值时，从重选优先级不高于驻留小区的重选优先级的邻小区中选择出满足覆盖等级小区选择条件的邻小区，当选择出的邻小区满足覆盖等级小区重选条件时，则将该邻小区作为目标小区；
    所述覆盖等级小区重选条件为在规定的时间间隔内邻小区的信号质量等级大于驻留小区的信号质量等级，其中邻小区的信号质量等级根据邻小区的信号质量与邻小区的覆盖等级补偿值确定，所述驻留小区的信号质量等级根据驻留小区的信号质量与驻留小区的覆盖等级补偿值确定。
  29. 如权利要求25或28所述的方法，其特征在于，所述小区的信号质量包括：小区的参考信号接收功率值以及小区的参考信号接收质量值，所述从各个邻小区中选择出信号质量大于小区的信号质量阈值的邻小区，包括：
    从各个邻小区中选择出满足如下公式的邻小区：
    Srxlev>0且Squal>0，其中：
    Srxlev＝Qrxlevmeas–(Qrxlevmin+Qrxlevminoffse+Qcoverageclassoffset)–Pcompensation；
    Squal＝Qqualmeas–(Qqualmin+Qqualminoffset+Qcoverageclassoffset)；
    其中，Srelex表示小区选择接收水平，Qrelevmeas表示测量到的小区参考信号接收功率值，(Qrxlevmin+Qrxlevminoffse+Qcoverageclassoffset)–Pcompensation表示小区参考信号接收功率阈值；其中Qrelevmin表示小区所要求的最小接收水平，Qrxlevminoffse表示Qrelevmin的偏移量，Qcoverageclassoffset表示网络侧为各个小区的预配置的覆盖等级补偿值，Pcompensation表示(PEMAX-PPowerClass)和0中的最大值，PEMAX表示用户终 端进行上行传输时的最大发射功率，PPowerClass表示用户终端最大射频输出功率；
    Squal表示小区选择质量值，Qqualmeas表示测量到的小区参考信号接收质量值，(Qqualmin+Qqualminoffset+Qcoverageclassoffset)表示测量到的小区参考信号接收质量阈值；Qqualmin表示小区所要求的最小质量水平，Qqualminoffset表示Qqualmin的偏移量，Qcoverageclassoffset表示网络侧为各个小区的预配置的覆盖等级补偿值。
  30. 如权利要求22～29所述的方法，其特征在于，所述各个小区包括存在扩展覆盖区域的扩展覆盖小区及不存在扩展覆盖区域的正常小区，则所述获取的网络侧为正常小区预配置的覆盖等级补偿值为零或者为缺省值。
  31. 如权利要求22～30任一项所述的方法，其特征在于，在获取网络侧为邻小区预配置的覆盖等级补偿值之前，所述方法还包括：
    确定用户终端支持驻留在存在扩展覆盖区域的扩展覆盖小区。
  32. 一种小区选择方法，其特征在于，包括：
    为各个小区配置覆盖等级补偿值；
    将为各个小区配置的覆盖等级补偿值发送给用户终端，所述覆盖等级补偿值用于用户终端进行小区选择/重选。
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