WO2014022961A1 - 一种小区选择方法、用户设备和网络节点 - Google Patents

一种小区选择方法、用户设备和网络节点 Download PDF

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Publication number
WO2014022961A1
WO2014022961A1 PCT/CN2012/079742 CN2012079742W WO2014022961A1 WO 2014022961 A1 WO2014022961 A1 WO 2014022961A1 CN 2012079742 W CN2012079742 W CN 2012079742W WO 2014022961 A1 WO2014022961 A1 WO 2014022961A1
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WO
WIPO (PCT)
Prior art keywords
speed
cell
signal quality
meets
moving speed
Prior art date
Application number
PCT/CN2012/079742
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English (en)
French (fr)
Inventor
徐小英
陈东
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2012/079742 priority Critical patent/WO2014022961A1/zh
Priority to CN201280016359.7A priority patent/CN103765957B/zh
Publication of WO2014022961A1 publication Critical patent/WO2014022961A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/24Reselection being triggered by specific parameters
    • H04W36/249Reselection being triggered by specific parameters according to timing information

Definitions

  • the present application relates to the field of wireless communications, and in particular, to a cell selection method and a user equipment.
  • Hetneteous Network Hetnet
  • Hetnet is composed of multiple cells of different sizes and types, including: macro cell
  • the cell includes: a cell (Micro cell), a cell (Pico Cell), a Femto Cell, and a remote radio head (RRH).
  • a cell Mocro cell
  • Pico Cell a cell
  • Femto Cell a cell
  • RRH remote radio head
  • the reselection speed of the UE is the number of times the UE performs cell reselection within a predetermined time, and the cell measurement can be triggered only when the reselection speed of the UE is higher than a certain threshold, that is, at a high speed state.
  • a certain threshold that is, at a high speed state.
  • Embodiments of the present application provide a cell selection method, a UE, and a network node, which can reduce the load of the UE and reduce the risk of handover failure.
  • a first aspect of the present application provides a cell selection method, including:
  • a cell whose signal quality meets the requirements and satisfies the moving speed of the UE is selected.
  • the method before selecting a cell whose signal quality meets the requirements and meets the moving speed, the method further includes:
  • the moving speed or reselection speed of the UE is determined.
  • the moving speed exceeds a cell speed corresponding to the serving cell
  • the signal quality of the serving cell is below a predefined threshold.
  • the reselection speed of the UE exceeds a reselection speed corresponding to the serving cell
  • the UE enters a cell of a specific type or a specific scrambling code
  • the signal quality of the serving cell is lower than a predefined quality threshold corresponding to the moving speed.
  • the method before selecting a cell whose signal quality meets the requirements and meets the moving speed of the UE, the method further includes:
  • the cell speed information includes:
  • the selecting according to the cell speed information of the neighboring cell and the measured signal quality information, selecting a signal quality that meets the requirement and satisfying the user equipment UE
  • the mobile speed of the cell including: Comparing the measured signal quality information with a rated quality threshold to determine a neighboring cell whose signal quality meets the requirements;
  • the selection is made in a cell in which the signal quality meets the requirements and satisfies the moving speed of the user equipment UE.
  • the method further includes:
  • the determining the moving speed or the reselection speed of the UE is triggered.
  • the moving speed exceeds a cell speed corresponding to the serving cell, including:
  • the UE When the moving speed exceeds the cell speed corresponding to the serving cell, and continues for a certain period of time; the UE enters a specific type or a specific scrambling code cell, including:
  • the UE enters a specific type or a specific scrambling code for a certain duration; the signal quality of the serving cell is lower than a predefined quality threshold, including:
  • the signal quality of the serving cell is lower than the predefined quality threshold corresponding to the moving speed and lasts for a certain period of time.
  • the certain duration is a parameter that is sent, pre-arranged, and/or configured by the network side.
  • the second aspect of the present application further provides a cell selection method, including:
  • the cell speed information includes at least one of the following: a speed range, a speed level, or a speed threshold corresponding to the cell type, or a speed range, a speed level, or a speed threshold corresponding to the range of the cell scrambling code, or corresponding to the cell list.
  • Speed range, speed grade or speed threshold is a predefined quality threshold of a serving cell, so that a signal quality of the UE in the serving cell is lower than that of the UE The measurement is triggered when the moving speed corresponds to a predefined quality threshold.
  • the method further includes: sending a speed determination indication to the UE, to trigger the UE to determine a moving speed or a reselecting speed.
  • the method further includes:
  • the time length parameter is used to trigger the further limitation of the measurement: indicating that the UE is faster than the cell speed corresponding to the serving cell for a certain period of time; and/or entering a specific type or specific interference a cell of the code, and for a certain period of time; and/or after the reselection speed exceeds a reselection speed corresponding to the serving cell for a certain period of time; and/or, when the serving cell signal quality is lower than the moving speed
  • the predefined quality threshold is maintained for a certain length of time.
  • the third aspect of the present application further provides a UE, including:
  • a measuring unit configured to measure signal quality of a neighboring cell
  • a selecting unit configured to select, according to the cell speed information of the neighboring cell and the measured signal quality information, a cell whose signal quality meets the requirements and meets the moving speed of the UE.
  • the UE further includes: a determining unit, configured to determine, before the selecting unit selects a cell whose signal quality meets requirements and meets a moving speed of the UE, The moving speed or reselection speed of the UE.
  • the measuring unit is further configured to trigger a measurement when at least one of the following conditions is met:
  • the moving speed exceeds a cell speed corresponding to the serving cell
  • the reselection speed of the UE exceeds a reselection speed corresponding to the serving cell;
  • the UE enters a cell of a specific type or a specific scrambling code;
  • the signal quality of the serving cell is lower than a predefined quality threshold corresponding to the moving speed.
  • the UE further includes:
  • the receiving unit receives the cell speed information delivered by the network side and/or a predefined quality threshold of the serving cell;
  • the cell speed information includes at least one of the following: a speed range, a speed level, or a speed threshold corresponding to the cell type, a speed range, a speed level, or a speed threshold corresponding to a range of the cell scrambling code, and a speed corresponding to the cell list. Range, speed grade or speed threshold.
  • the selecting unit includes:
  • a first determining module configured to compare the measured signal quality information with a rated quality threshold to determine a neighboring cell whose signal quality meets the requirements
  • a second determining module configured to compare a moving speed of the UE with a cell speed information corresponding to the neighboring cell whose signal quality meets the requirement, and determine a cell whose signal quality meets the requirement and meets the moving speed of the user equipment UE;
  • a selection module configured to select a cell to which the signal quality meets the requirements and meets the moving speed of the user equipment UE.
  • the determining unit is further configured to: when the UE meets the speed determination condition and/or receives the speed determination indication sent by the network side The determining the moving speed or the reselecting speed of the UE is performed.
  • the determining unit is further configured to:
  • the measurement When the moving speed exceeds the cell speed corresponding to the serving cell and continues for a certain period of time, triggering the measurement; and/or, when entering a cell of a specific type or a specific scrambling code, and continuing for a certain period of time, triggering the measurement; And/or, when the signal quality of the serving cell is lower than a predefined quality threshold corresponding to the moving speed, and continues for a certain period of time, triggering the measurement; and/or, The measurement is triggered when the reselection speed of the UE exceeds the reselection speed corresponding to the serving cell and continues for a certain period of time.
  • the UE further includes:
  • the configuration unit is configured to configure the predetermined duration that is delivered by the network side, pre-agreed, and/or self-configured.
  • the fourth aspect of the present application further provides a network node, including:
  • a storage unit configured to store cell speed information
  • a first sending unit configured to send, to the UE, the cell speed information and/or a predefined quality threshold of the serving cell stored in the storage unit, so that the UE selects a signal quality that meets a requirement and meets a moving speed of the UE.
  • the cell speed information includes at least one of the following: a speed range, a speed level, or a speed threshold corresponding to the cell type, or a speed range, a speed level, or a speed threshold corresponding to the range of the cell scrambling code, or corresponding to the cell list. Speed range, speed grade or speed threshold.
  • the network node further includes: a fourth sending unit, configured to send, to the UE, a predefined quality threshold of the serving cell, so that the UE is in the serving cell The measurement is triggered when the signal quality is lower than a predefined quality threshold corresponding to the moving speed of the UE.
  • the network node further includes: a second sending unit, configured to send a speed determination indication to the UE, to trigger the UE to determine a moving speed or a reselecting speed .
  • the network node further includes:
  • a third sending unit configured to send a duration parameter to the UE
  • the duration parameter is used to: indicate that the UE triggers the measurement after the moving speed exceeds a cell speed corresponding to the serving cell and continues for a certain period of time; and/or enters a specific type or a specific scrambling code. And triggering the measurement after a certain period of time; and/or at The reselection speed exceeds a reselection speed corresponding to the serving cell, and after a certain duration, triggers the measurement; and/or, when the signal quality of the serving cell is lower than a predefined quality threshold corresponding to the moving speed, and continues After a certain length of time, the measurement is triggered.
  • the fifth aspect of the application further provides a UE, including:
  • a memory configured to store cell speed information of a neighboring cell
  • a processor configured to measure a signal quality of the neighboring cell; and select, according to the cell speed information of the neighboring cell stored in the memory and the measured signal quality information, a cell whose signal quality meets the requirements and meets the moving speed of the UE.
  • the processor is further configured to: determine a moving speed or a reselecting speed of the UE before selecting a cell whose signal quality meets the requirements and meets the moving speed.
  • the processor is further configured to trigger a measurement when at least one of the following conditions is met:
  • the moving speed exceeds a cell speed corresponding to the serving cell
  • the reselection speed of the UE exceeds a reselection speed corresponding to the serving cell
  • the UE enters a cell of a specific type or a specific scrambling code
  • the signal quality of the serving cell is lower than a predefined quality threshold corresponding to the moving speed.
  • the UE further includes:
  • a receiver configured to receive, after the processor determines the moving speed of the UE, the cell speed information and/or the predefined quality threshold of the serving cell that is sent by the network side;
  • the memory is further configured to store the cell speed information received by the receiver, where the cell speed information includes at least one of the following: a speed range, a speed level, or a speed threshold corresponding to a cell type, and a cell interference
  • the processor is further configured to: when the UE meets a speed determination condition and/or receives a network side to send When the speed determination indication is triggered, the determining the moving speed or the reselecting speed of the UE is triggered.
  • the processor is further configured to: when the moving speed exceeds a cell speed corresponding to the serving cell, and continues for a certain period of time, triggering the And/or, when entering a cell of a particular type or a specific scrambling code for a certain period of time, triggering the measurement; and/or, when the signal quality of the serving cell is lower than a predefined quality corresponding to the moving speed Threshold, and after a certain period of time, triggering the measurement; and/or, when the reselection speed of the UE exceeds a reselection speed corresponding to the serving cell, and continues for a certain period of time, the measurement is triggered.
  • the processor is further configured to configure the network-side delivered, pre-agreed, and/or self-configured the certain duration.
  • the sixth aspect of the present application further provides a network node, including:
  • a memory configured to store the cell speed information and/or a predefined quality threshold of the serving cell
  • the transmitter is configured to send, to the UE, the cell speed information stored in the memory and/or a predefined quality threshold of the serving cell, So that the UE selects a cell whose signal quality meets the requirements and satisfies the moving speed of the UE;
  • the cell speed information includes at least one of the following: a speed range, a speed level, or a speed threshold corresponding to the cell type, or a speed range, a speed level, or a speed threshold corresponding to the range of the cell scrambling code, or corresponding to the cell list. Speed range, speed grade or speed threshold.
  • the transmitter is further configured to: send a speed determination indication to the UE, to trigger the UE to determine a moving speed or a reselecting speed.
  • the transmitter is further configured to: send, to the UE, a predefined quality threshold of the serving cell, so that the UE is in the serving cell The measurement is triggered when the signal quality is lower than the predefined quality threshold corresponding to the moving speed of the UE.
  • the transmitter is further configured to: send a duration parameter to the UE;
  • the duration parameter is used to trigger further limitation of the measurement: indicating the
  • the cell selection method, the UE, and the network node provided by the embodiments of the present application, by measuring the signal quality of the neighboring cell, selecting the signal quality according to the cell speed information of the neighboring cell and the measured signal quality information, and satisfying the UE's mobile
  • the speed of the cell is set to the UE moving speed that can be satisfied by different types of cells.
  • the UE can select the cell that meets the speed requirement according to the moving speed of the UE, and avoid the moving speed of the UE is high and move to the resident in a short time.
  • the edge of the cell is moved out of the camping cell, the handover signaling is excessive when the connection is initiated, the load of the UE is reduced, and the risk of handover failure is reduced.
  • FIG. 1 is a flowchart of a cell selection method according to an embodiment of the present application
  • FIG. 2 is a flowchart of a cell selection method according to another embodiment of the present application.
  • FIG. 3 is a schematic diagram of a UE composition in another embodiment of the present application.
  • FIG. 4 is a schematic diagram of another UE composition in another embodiment of the present application.
  • FIG. 5 is a schematic diagram of another UE composition in another embodiment of the present application.
  • FIG. 6 is a flowchart of a cell selection method in another embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a network node according to another embodiment of the present application.
  • FIG. 8 is a schematic diagram of a network node composition in another embodiment of the present application. detailed description
  • GSM Global System for Mobile Communications
  • CDMA Code Division Multiple Access
  • CDMA Code Division Multiple
  • TDMA Time Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency OFDMA (Orthogonal Frequency-Division Multiple Access) system
  • SC-FDMA single carrier FDMA
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • the user equipment which may be a wireless terminal or a wired terminal, may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device connected to the wireless modem.
  • the wireless terminal can communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and with a mobile terminal
  • RAN Radio Access Network
  • the computers for example, can be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network.
  • Wireless terminals are also available Known as the system, Subscriber Unit, Subscriber Station, Mobile Station, Mobile, Remote Station, Access Point, Remote Terminal ( Remote Terminal), Access Terminal, User Terminal, User Agent, User Equipment.
  • a base station can refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface.
  • the base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate the management of the properties of the air interface.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), this application is not limited.
  • the base station controller (source node or target node) may be a base station controller (BSC) in GSM or CDMA, or may be a radio network controller (RNC) in WCDMA. Not limited.
  • BSC base station controller
  • RNC radio network controller
  • system and “network” are used interchangeably herein.
  • the term “and/or” in this context is merely an association describing the associated object, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists separately, and both A and B exist separately. B these three situations.
  • the character "/" in this article generally indicates that the contextual object is an "or” relationship.
  • An embodiment of the present application provides a cell selection method. As shown in FIG. 1, the method may include:
  • the UE may move quickly to a short time.
  • the coverage edge of the serving cell, or the coverage of the serving cell, at this time if the UE initiates the connection, a problem of frequent handover or handover failure may occur. Therefore, in order to avoid the connection failure after the UE initiates the connection when moving at a high speed, the camped cell with the appropriate coverage may be selected according to the UE speed. For example, for a high-speed mobile UE, a macro cell with a wide coverage may be selected, and for a UE that does not move or has a low mobile speed, a micro cell with a small coverage may be selected.
  • the UE is in an idle state and camps in the serving cell.
  • the UE may select a cell that can meet the speed requirement according to the moving speed, where the cell Residing, that is, reselecting the cell. Therefore, it is avoided that the camping in a cell with a small coverage causes frequent switching when the connection is initiated, and even causes a problem of handover failure.
  • the cell speed information may be configured by the network side and sent to the UE, or may be pre-agreed with the cell speed information corresponding to each type of cell.
  • the cell speed information can be a speed range, or a speed level, or a speed threshold.
  • the signal quality meets the requirement that the signal quality of the neighboring cell satisfies the minimum threshold at which U E resides. Further, the signal quality may be included above a serving cell or below a certain threshold of the serving cell.
  • the cell selection method provided by the embodiment of the present application, according to the cell speed information of the neighboring cell and the measured signal quality information, selects a cell whose signal quality meets the requirements and satisfies the moving speed of the UE, and sets different types of cells to satisfy
  • the UE moving speed can select a cell that meets the speed requirement according to the moving speed of the UE, avoiding the moving speed of the UE, and moving to the edge of the camping cell in a short time or after the mobile station is removed from the camping cell Too much, reduce the load on the UE, and reduce the risk of handover failure.
  • Another embodiment of the present application provides a cell selection method. As shown in FIG. 2, the method may include: 201. Receive cell speed information sent by a network side.
  • the cell speed information includes at least one of the following: a speed range, a speed level, or a speed threshold corresponding to the cell type, and a speed range corresponding to the range of the cell scrambling code. Range, speed grade or speed threshold, speed range, speed grade or speed threshold corresponding to the cell list.
  • the cell speed information can be sent to the broadcast or a dedicated message for sending the speed information to
  • the network side may include cell speed information in the delivered cell reselection parameter. Specifically, the network side can deliver a suitable speed range, speed level, or speed threshold corresponding to each cell type.
  • the network side may also send the cell type of the neighboring cell, including a macro cell, a micro cell, a pico cell, and the like. In this way, the UE can determine the suitable speed range of the neighboring cell according to the cell type of the neighboring cell, and determine whether it is suitable to camp in the cell by determining the moving speed of the UE itself.
  • the network side may not send an explicit cell type indication, and the UE may determine a suitable speed range of the neighboring cell according to other cell information. For example, the corresponding range may be determined according to the range of the scrambling code of the neighboring cell. Speed range.
  • the speed threshold may be the highest speed value suitable for the UE.
  • the step 201 is an optional step, and the step 201 is not performed.
  • the UE and the network side respectively agree and configure a suitable speed range, a speed level, or a speed threshold corresponding to different cell types.
  • the network side only sends the cell type indication, and the UE can determine the suitable speed range according to the cell type of the neighboring cell.
  • the cell range can be determined according to the cell scrambling code.
  • the cell speed information may also be based on a cell list, e.g., a group of cell lists corresponding to a speed range, a speed level, or a speed threshold.
  • a set of cell lists may include at least one cell, and a speed range corresponding to a single cell may be configured, or a speed range corresponding to a cell list composed of multiple cells may be configured.
  • the UE may start the process of determining the moving speed of the UE under a certain triggering condition.
  • the method in this embodiment may further include the following step 202:
  • the UE meets the speed determination condition and/or receives the speed determination indication sent by the network side.
  • the condition that the speed determination condition is met may be: the cell type of the UE serving cell belongs to the cell type of the startup speed determining process, or the range of the scrambling code of the UE serving cell belongs to the scrambling code range of the startup speed determining process.
  • the speed determination process may not be initiated; while the micro-area coverage is small, the UE has high-speed mobility, and the risk of leaving the micro-area when the connection is initiated, thus satisfying the speed determination condition, when the UE accesses
  • the speed determination process can be started when the micro cell is used.
  • the speed determination condition may also be: After entering a specific type or a specific scrambling code and continuing for a period of time, the speed determination process is restarted. Alternatively, the speed determination condition may be satisfied: after the UE senses that the signal changes exceed a certain amplitude within a certain period of time, the UE determines the speed determination process.
  • the speed determination indication sent by the network side may also be used as a trigger condition for starting the UE speed determination process. For example, when the UE receives the broadcast message sent by the network side to start the speed determination process, or receives the signaling indication sent by the network side to start the speed determination process, the speed determination process may be started, and step 203 is performed. .
  • the UE may determine the moving speed through the positioning function and the timing function or through a special speed measuring function, or may directly determine the moving speed information according to the stored moving speed information. For example, if the UE has acquired the moving speed of the UE through other applications before step 203, the stored moving speed information may be directly read in step 203. Further, it can also be determined whether the stored moving speed information has timeliness. If the time of the last time the moving speed is acquired is longer than the current time, the moving speed of the UE can be re-determined.
  • the moving speed or the reselecting speed of the user equipment UE may be determined after the step 202, and the moving speed or the reselecting speed of the UE may be determined at other suitable timings, before step 204 or at step 204. after that.
  • the cell speed information in step 201 may be before measuring the neighboring cell, or after measuring the neighboring cell.
  • the moving speed of the UE may be determined, and the predefined quality threshold of the serving cell and the cell speed information of the neighboring cell are obtained. When the signal quality of the serving cell is lower than the predefined quality threshold corresponding to the current moving speed, the step 204 is triggered. Measurement operation.
  • the measurement may be triggered when entering the micro cell, and then the moving speed of the UE may be determined, and the cell speed information of the neighboring cell may be acquired, and the cell that can satisfy the moving speed of the UE is selected from the neighboring cells whose signal quality meets the requirements. 204. Trigger measurement.
  • the method of triggering the measurement may be: triggering the measurement when the moving speed exceeds the cell speed corresponding to the serving cell.
  • the UE may be pre-configured or obtain the cell speed information of the serving cell from the network side as described in step 201.
  • the cell speed is not determined by the processing capability of the cell base station, but is determined by the cell coverage range. Suitable UE speed range, or speed threshold, speed grade, etc. For example, when the moving speed of the UE exceeds the speed range, or is higher than the speed threshold, or exceeds the speed level, the UE may be at risk of leaving the serving cell coverage at the current moving speed, so the measurement may be triggered and the UE may be selected in time.
  • the method for triggering the measurement may also be: acquiring a reselection speed of the UE; and triggering measurement when the reselection speed of the UE exceeds a reselection speed corresponding to the serving cell.
  • the UE can trigger the measurement when any one of the moving speed and the reselecting speed exceeds the predetermined range, thereby improving the stability of the UE service.
  • the reselection speed is the number of times the UE reselects in a certain period of time.
  • the method for triggering the measurement may be: triggering the measurement when the signal quality of the serving cell is lower than a predefined quality threshold corresponding to the moving speed.
  • the predefined quality threshold of the serving cell may be different quality thresholds for different moving speeds, and the UE selects a corresponding quality threshold according to the actual moving speed. For example, a lower threshold is set for the low-speed UE and a higher threshold is set for the high-speed UE, and the UE can determine the quality threshold to be used according to the current moving speed.
  • the predefined quality threshold can be a network-issued, pre-agreed, and/or self-configured parameter.
  • the above method of triggering measurement is a relationship of "and / or". That is, in practical applications, a combination of one or more of the above conditions for triggering measurements may be selected. For example, when one of the trigger conditions is met, the measurement can be triggered; or, when several of the conditions are met, the measurement is triggered.
  • the conditions for triggering the measurement may be set more strictly. For example, when the moving speed exceeds a cell corresponding to the serving cell The speed, and for a certain length of time, triggers the measurement.
  • the measurement may be triggered when the UE may trigger the measurement when the serving cell signal quality is lower than a predefined quality threshold corresponding to the UE moving speed and continues for a certain period of time.
  • a cell of a particular type or specific scrambling code is entered, the measurement is triggered.
  • the measurement is triggered when the UE enters a cell of a particular type or a particular scrambling code for a certain period of time.
  • the certain duration may be a parameter that is sent, pre-arranged, and/or configured by the network side.
  • the method for selecting a cell whose signal quality meets the requirements and meets the moving speed of the user equipment UE may include: comparing the measured signal quality information with a rated quality threshold, determining a neighboring cell whose signal quality meets the requirement; and moving the UE Comparing the speed with the cell speed information corresponding to the required neighboring cell, and determining a cell whose signal quality meets the requirements and meets the moving speed of the user equipment UE; selecting the signal quality to meet the requirement and satisfying the user equipment UE Moving speed in the cell.
  • step 204 may be triggered to perform measurement.
  • the cell speed information and measurement results of the neighboring cell are as follows:
  • the neighboring cell A is a micro cell, the signal quality is high, but the speed class is low speed;
  • the neighbor cell B is a macro cell, the speed class is high speed, but the signal quality is low.
  • the neighboring cell C is a macro cell with high signal quality and a high speed class. According to the above measurement result and the cell speed information, it can be determined that the UE moving at high speed should select the macro cell C with high signal quality and suitable for the high speed UE.
  • the network may set a predefined quality threshold of the reselected cell corresponding to different speeds. For example, the high-speed UE corresponds to a lower threshold, and the low-speed UE corresponds to a higher threshold, so that the high-speed UE can more easily select to reselect to a suitable cell.
  • the cell selection method provided by the embodiment of the present application, according to the cell speed information of the neighboring cell and the measured signal quality information, selects a cell whose signal quality meets the requirements and satisfies the moving speed of the UE, and sets different types of cells to satisfy
  • the UE moving speed can select a cell that meets the speed requirement according to the moving speed of the UE, avoiding the moving speed of the UE, and moving to the edge of the camping cell in a short time or after the mobile station is removed from the camping cell Too much, reduce the load on the UE, and reduce the risk of handover failure.
  • the UE triggers the cell measurement when the moving speed exceeds the speed range suitable for the serving cell, and reselects the cell that can satisfy the current mobile speed of the UE, and can avoid leaving the resident cell in a short time without the UE moving at a high speed.
  • Another embodiment of the present application provides a user equipment UE, as shown in FIG. 3, including: a measuring unit 31 and a selecting unit 32.
  • the measuring unit 31 is configured to measure signal quality of neighboring cells.
  • the selecting unit 32 is configured to select, according to the cell speed information of the neighboring cell and the measured signal quality information, a cell whose signal quality meets the requirements and meets the moving speed of the UE.
  • the UE further includes: a determining unit 33.
  • the determining unit 33 is configured to determine a moving speed or a reselecting speed of the UE before the selecting unit 32 selects a cell whose signal quality meets the requirements and satisfies the moving speed of the UE.
  • the measuring unit 31 is further configured to: when the at least one condition is met, triggering the measurement: the moving speed exceeds a cell speed corresponding to the serving cell; and the reselecting speed of the UE exceeds a reselecting speed corresponding to the serving cell; The UE enters a cell of a specific type or a specific scrambling code; the signal quality of the serving cell is lower than a predefined quality threshold corresponding to the moving speed.
  • the UE further includes: a receiving unit 34.
  • the receiving unit 34 is configured to: before the determining unit 33 determines the moving speed of the UE, The cell speed information delivered by the network side and/or the predefined quality threshold of the serving cell are received.
  • the cell speed information includes at least one of the following: a speed range, a speed level, or a speed threshold corresponding to the cell type, a speed range, a speed level, or a speed threshold corresponding to a range of the cell scrambling code, and a speed corresponding to the cell list. Range, speed grade or speed threshold.
  • the selecting unit 32 includes: a first determining module 321, a second determining module 322, and a selecting module 323.
  • the first determining module 321 is configured to compare the signal quality information measured by the measuring unit 31 with a rated quality threshold to determine a neighboring cell whose signal quality meets the requirements.
  • the second determining module 322 is configured to compare the moving speed of the UE with the cell speed information corresponding to the neighboring cell whose signal quality meets the requirement, and the neighboring cell determined by the first determining unit 321 to meet the required signal quality A cell in which the signal quality meets the requirements and satisfies the moving speed of the user equipment UE is determined.
  • the selecting module 323 is configured to select a cell that meets the signal quality compliance requirement determined by the second determining unit 322 and meets the moving speed of the user equipment UE.
  • the determining unit 33 is further configured to: when the UE meets the speed determination condition and/or receive the speed determination indication sent by the network side, perform the determining the moving speed or the reselection speed of the UE.
  • the determining unit 33 is further configured to: when the moving speed exceeds a cell speed corresponding to the serving cell, and after a certain duration, trigger the measurement; and/or, when entering a specific type or a specific scrambling code And after a certain period of time, triggering the measurement; and/or, when the signal quality of the serving cell is lower than a predefined quality threshold corresponding to the moving speed, and after a certain period of time, triggering the measurement; and/or, The measurement is triggered when the reselection speed of the UE exceeds the reselection speed corresponding to the serving cell and continues for a certain period of time.
  • the UE further includes: a configuration unit 35.
  • the configuration unit 35 is configured to configure, for a predetermined period of time, pre-agreed and/or self-configured by the network side.
  • the UE provided by the embodiment of the present application selects a cell whose signal quality meets the requirements and meets the moving speed of the UE according to the cell speed information of the neighboring cell and the measured signal quality information, and sets the UE that can be satisfied by different types of cells.
  • the mobile speed may be selected according to the moving speed of the UE, and the UE may be selected to meet the speed requirement, and the UE may be moved to the edge of the camped cell in a short time or after the mobile terminal is removed from the camped cell. More, reduce the load on the UE and reduce the risk of handover failure.
  • the UE triggers the cell measurement when the moving speed exceeds the speed range suitable for the serving cell, and reselects the cell that can satisfy the current mobile speed of the UE, and can avoid leaving the resident cell in a short time without the UE moving at a high speed.
  • Another embodiment of the present application further provides a UE, as shown in FIG. 5, including: a memory 43 and a processor 41.
  • the memory 43 is configured to store cell speed information of a neighboring cell.
  • the processor 41 is configured to measure signal quality of the neighboring cell; select, according to the cell speed information of the neighboring cell stored in the memory 43 and the measured signal quality information, a cell whose signal quality meets the requirements and meets the moving speed of the UE. .
  • the processor 41 is further configured to: determine a moving speed or a reselecting speed of the UE before selecting a cell whose signal quality meets the requirements and meets the moving speed.
  • the processor 41 is further configured to: when the moving speed exceeds a cell speed corresponding to the serving cell, trigger a measurement; and/or, when entering a cell of a specific type or a specific scrambling code, trigger a measurement; when the moving speed When the cell speed corresponding to the serving cell exceeds the cell speed, the measurement is triggered; and/or, when the cell of the specific type or the specific scrambling code is entered, the measurement is triggered; and/or, when the signal quality of the serving cell is lower than the pre-corresponding to the moving speed The measurement is triggered when the quality threshold is defined.
  • the UE further includes: a receiver 42.
  • the receiver 42 is configured to receive the cell speed information and/or the predefined quality threshold of the serving cell that is sent by the network side before the processor 41 determines the moving speed of the UE.
  • the memory 43 is further configured to store the cell speed information received by the receiver 42.
  • the cell speed information includes at least one of the following: a speed range, a speed level, or a speed threshold corresponding to the cell type, or a speed range, a speed level, or a speed threshold corresponding to the range of the cell scrambling code, or corresponding to the cell list. Speed range, speed grade or speed threshold.
  • the processor 41 is further configured to: when the UE meets the speed determination condition and/or receive the speed determination indication sent by the network side, trigger the determining the moving speed or the reselection speed of the UE.
  • the processor 41 is further configured to: when the moving speed exceeds a cell speed corresponding to the serving cell, and after a certain duration, trigger the measurement; and/or, when the signal quality of the serving cell is lower than the a predetermined quality threshold corresponding to the moving speed, and after the lapse of a certain period of time, triggering the measurement; and/or, when the reselection speed of the UE exceeds a reselection speed corresponding to the serving cell, and continues for a certain period of time, triggering the measuring.
  • processor 41 is further configured to configure the predetermined duration that is delivered by the network side, pre-agreed, and/or configured by itself.
  • the UE provided by the embodiment of the present application selects a cell whose signal quality meets the requirements and meets the moving speed of the UE according to the cell speed information of the neighboring cell and the measured signal quality information, and the prior art only according to the UE in a certain period of time.
  • the number of reselection times triggers the cell reselection technique, and sets the UE moving speed that can be satisfied by different types of cells.
  • the UE can select the cell that meets the speed requirement according to the moving speed of the UE, and avoid the UE moving speed.
  • the UE triggers the cell measurement when the moving speed exceeds the speed range suitable for the serving cell, and reselects the cell that can satisfy the current mobile speed of the UE, and can avoid leaving the resident cell in a short time without the UE moving at a high speed.
  • Another embodiment of the present application further provides a cell selection method, which can be applied to the network side. As shown in FIG. 6, the method may include:
  • the cell speed information includes at least one of the following: a speed range, a speed level, or a speed threshold corresponding to the cell type, or a speed range, a speed level, or a speed threshold corresponding to the range of the cell scrambling code, or corresponding to the cell list. Speed range, speed grade or speed threshold.
  • the UE may trigger measurement when the moving speed exceeds a cell speed corresponding to the serving cell; and/or may trigger a measurement when entering a specific type or a specific scrambling code cell; and/or may be at the reselection speed
  • the measurement is triggered by exceeding the reselection speed corresponding to the serving cell; and/or the UE may trigger the measurement when the signal quality of the serving cell is lower than a predefined quality threshold corresponding to the moving speed.
  • the predefined quality threshold of the serving cell may be different quality thresholds for different moving speeds, and the UE selects a corresponding quality threshold according to the actual moving speed. For example, a lower threshold is set for the low-speed UE and a higher threshold is set for the high-speed UE, and the UE can determine the quality threshold to be used according to the current moving speed. It can be understood that the predefined quality threshold can be a network-issued, pre-agreed and/or self-configured parameter.
  • the process of starting the UE for speed determination may be indicated by the network, and the method may further include:
  • the method further includes:
  • the duration parameter is used to: indicate that the UE triggers the measurement after the moving speed exceeds a cell speed corresponding to the serving cell and continues for a certain period of time; and/or enters a specific type or a specific scrambling code. And after a certain period of time, triggering the measurement; and/or triggering the measurement after the reselection speed exceeds a reselection speed corresponding to the serving cell for a certain period of time; and/or, when the signal of the serving cell
  • the quality is lower than the predefined speed corresponding to the moving speed
  • the quality threshold is thresholded and, after a certain period of time, triggers the measurement.
  • the predefined quality threshold can be sent through the network side.
  • the method may further include: the network node sending a predefined quality threshold of the serving cell to the UE, so that the UE triggers when the signal quality of the serving cell is lower than a predefined quality threshold corresponding to the moving speed of the UE measuring.
  • Another embodiment of the present application further provides a network node. As shown in FIG. 7, the method includes: a first sending unit 61 and a storage unit 64.
  • the storage unit 64 is configured to store cell speed information.
  • the first sending unit 61 is configured to send the cell speed information stored in the storage unit 64 to the UE, so that the UE selects a cell whose signal quality meets the requirements and meets the moving speed of the UE.
  • the cell speed information includes at least one of the following: a speed range, a speed level, or a speed threshold corresponding to the cell type, or a speed range, a speed level, or a speed threshold corresponding to the range of the cell scrambling code, or corresponding to the cell list. Speed range, speed grade or speed threshold.
  • the network node may further include: a second sending unit 62.
  • the second sending unit 62 is configured to send a speed determination indication to the UE, to trigger the UE to determine a moving speed or a reselecting speed.
  • the network node may further include: a third sending unit 63.
  • the third sending unit 63 is configured to send a duration parameter to the UE.
  • the duration parameter is used to: indicate that the UE triggers the measurement after the moving speed exceeds a cell speed corresponding to the serving cell and continues for a certain period of time; and/or enters a specific type or a specific scrambling code. And after a certain period of time, triggering the measurement; and/or triggering the measurement after the reselection speed exceeds a reselection speed corresponding to the serving cell for a certain period of time; and/or, when the signal of the serving cell The measurement is triggered after the quality is lower than the predefined quality threshold corresponding to the moving speed and continues for a certain period of time.
  • the network node may further include: a fourth sending unit 65, configured to send, to the UE, a predefined quality threshold of the serving cell, so that a signal quality of the UE in the serving cell is lower than a moving speed of the UE The measurement is triggered when the corresponding predefined quality threshold is reached.
  • a fourth sending unit 65 configured to send, to the UE, a predefined quality threshold of the serving cell, so that a signal quality of the UE in the serving cell is lower than a moving speed of the UE The measurement is triggered when the corresponding predefined quality threshold is reached.
  • Another embodiment of the present application further provides a network node, as shown in FIG. 8, including: a transmitter 71 and a memory 72.
  • the memory 72 is configured to store cell speed information and/or a predefined quality threshold of the serving cell.
  • the transmitter 71 is configured to send the cell speed information stored in the memory to the UE, so that the UE selects a cell whose signal quality meets the requirements and satisfies the moving speed of the UE.
  • the cell speed information includes at least one of the following: a speed range, a speed level, or a speed threshold corresponding to the cell type, or a speed range, a speed level, or a speed threshold corresponding to the range of the cell scrambling code, or corresponding to the cell list. Speed range, speed grade or speed threshold.
  • the transmitter 71 is further configured to: send a speed determination indication to the UE, to trigger the U E to determine a moving speed or a reselecting speed.
  • the transmitter 71 is further configured to send, to the UE, a predefined quality threshold of the serving cell, so that the signal quality of the UE in the serving cell is lower than a predefined quality gate corresponding to the moving speed of the UE. Time measurement is triggered.
  • the transmitter 71 is further configured to: send a duration parameter to the UE.
  • the duration parameter is used to: indicate that the UE triggers the measurement after the moving speed exceeds a cell speed corresponding to the serving cell and continues for a certain period of time; and/or enters a specific type or a specific scrambling code. And triggering the measurement after a certain period of time; and/or triggering the measurement after the reselection speed exceeds a reselection speed corresponding to the serving cell for a certain period of time; and/or, when the signal of the serving cell The measurement is triggered after the quality is lower than the predefined quality threshold corresponding to the moving speed and continues for a certain period of time.
  • Another embodiment of the present application further provides a cell selection system, a UE, and a network node.
  • the UE is configured to measure signal quality of the neighboring cell; according to the cell speed information of the neighboring cell and the measured signal quality information, the selected signal quality meets the requirement and satisfies the The cell of the UE's moving speed.
  • the network node is configured to send cell speed information to the UE, so that the UE selects a cell whose signal quality meets the requirements and meets the moving speed of the UE.
  • the network node and the cell selection system provided by the embodiment of the present application select a cell whose signal quality meets the requirements and meets the moving speed of the UE according to the cell speed information of the neighboring cell and the measured signal quality information, and is only based on the prior art.
  • the UE sets the UE moving speed that can be satisfied by different types of cells, and can select a cell that meets the speed requirement according to the moving speed of the UE, and avoids the UE.
  • the moving speed is high, and when the mobile terminal moves to the edge of the camping cell in a short time or moves out of the camping cell, the handover signaling is excessive when the connection is initiated, the load of the UE is reduced, and the risk of handover failure is reduced.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used. Combined or can be integrated into another system, or some features can be ignored, or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

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Abstract

本申请实例公开了一种小区选择方法、用户设备和网络节点,涉及无线通信领域,能够减少UE的负荷,降低切换失败的风险。本申请的方法包括:测量相邻小区的信号质量;根据相邻小区的小区速度信息和测量得到的信号质量信息,选择信号质量符合要求并且满足UE的移动速度的小区。本申请的实施例主要用于小区测量和重选的过程中。

Description

一种小区选择方法、 用户设备和网络节点
技术领域
本申请涉及无线通信领域, 尤其涉及一种小区选择方法、 用户设备
( User Equipment, UE ) 和网络节点。 背景技术
无线通信领域面临着数据业务爆炸增长的压力,为了提高网络容量和 降低传输成本,业内提出了一种异构网络( Heterogeneous Network, Hetnet ) 技术。 Hetnet由多个不同大小、 不同类型的小区一起构成, 包括: 宏小区
( Macro cell )和 小区。 其中 小区包括: 型小区 ( Micro cell )、 小区 ( Pico Cell )、 毫 小区 ( Femto Cell )、 远端射频头 ( Remote Radio Head, RRH ) 形态的小区等。 通过为话务密集的区域部署更多的微小区, 可以有效提高该区域的网络容量, 并且微小区因规模较小, 其建设成本
( Capital Expenditure , Cap ax ) 和运营成本 ( Operating Expense , Opex ) 都比较低, 因此 Hetnet受到众多运营商的重视, 是无线网络演进的一个重 要方向。
现有技术中, UE的重选速度为预定时间内 UE进行小区重选的次数, 仅当 UE的重选速度高于一定门限时, 即处于高速状态, 才能触发小区测 量。 而当空闲态 UE移动到小区边缘时, 下行信号质量会急剧衰减, 因此 需要在 UE发起连接之前, 保证 UE能够在小区中正常稳定的驻留。
但是, 由于不同类型小区的覆盖范围大小不同, 在覆盖范围较小的小 区中, 若 UE的重选速度还未达到触发测量的要求; 而 UE在移动到小区边 缘甚至超出小区边缘时, 若发起连接则会因为驻留小区不合适, 而在短时 间内频繁切换, 导致 UE负荷过高, 切换失败的风险较大。 发明内容 本申请的实施例提供一种小区选择方法、 UE和网络节点, 能够减少 UE的负荷, 降低切换失败的风险。
本申请的第一方面, 提供一种小区选择方法, 包括:
测量相邻小区的信号质量;
根据相邻小区的小区速度信息和测量得到的信号质量信息,选择信号 质量符合要求并且满足 UE的移动速度的小区。
结合第一方面, 在一种可能的实现方式中, 在选择信号质量符合要求 并且满足所述移动速度的小区之前, 所述方法还包括:
确定所述 UE的移动速度或重选速度。
结合第一方面和以上可能的实现方式, 在另一种可能的实现方式中, 在满足以下至少一个条件时, 触发测量:
所述移动速度超过服务小区对应的小区速度;
服务小区的信号质量低于预定义门限。
所述 UE的重选速度超过服务小区对应的重选速度;
所述 UE进入特定类型或特定扰码的小区;
服务小区的信号质量低于所述移动速度对应的预定义质量门限。
结合第一方面和以上可能的实现方式, 在另一种可能的实现方式中, 在选择信号质量符合要求并且满足 UE的移动速度的小区之前, 所述方法 还包括:
接收网络侧下发的小区速度信息和 /或服务小区的预定义质量门限; 其中, 所述小区速度信息包括:
与小区类型对应的速度范围、 速度等级或速度门限; 和 /或
与小区扰码所在范围对应的速度范围、 速度等级或速度门限; 和 /或 与小区列表对应的速度范围、 速度等级或速度门限。
结合第一方面和以上可能的实现方式, 在另一种可能的实现方式中, 所述根据相邻小区的小区速度信息和测量得到的信号质量信息,选择信号 质量符合要求并且满足用户设备 UE的移动速度的小区, 包括: 将测量得到的信号质量信息与额定质量门限进行比较,确定信号质量 符合要求的相邻小区;
将 U E的移动速度与所述信号质量符合要求的相邻小区对应的小区速 度信息进行比较, 确定信号质量符合要求并且满足用户设备 UE的移动速 度的小区;
选择到所述信号质量符合要求并且满足用户设备 UE的移动速度的小 区中。
结合第一方面和以上可能的实现方式, 在另一种可能的实现方式中, 所述方法还包括:
当所述 UE 满足速度确定条件和 /或接收到网络侧下发的速度确定指 示时, 触发所述确定 UE的移动速度或重选速度。
结合第一方面和以上可能的实现方式, 在另一种可能的实现方式中, 所述移动速度超过服务小区对应的小区速度, 包括:
当所述移动速度超过服务小区对应的小区速度, 并持续一定时长; 所述 UE进入特定类型或特定扰码的小区, 包括:
所述 UE进入特定类型或特定扰码的小区, 并持续一定时长; 所述服务小区的信号质量低于预定义质量门限, 包括:
服务小区的信号质量低于所述移动速度对应的预定义质量门限,并持 续一定时长。
结合第一方面和以上可能的实现方式, 在另一种可能的实现方式中, 所述一定时长为网络侧下发、 预先约定和 /或自行配置的参数。
本申请的第二方面还提供一种小区选择方法, 包括:
向 UE发送小区速度信息, 以便所述 UE选择信号质量符合要求并且 满足所述 UE的移动速度的小区;
其中, 所述小区速度信息包括以下至少一种: 与小区类型对应的速度 范围、 速度等级或速度门限, 或与小区扰码所在范围对应的速度范围、 速 度等级或速度门限,或与小区列表对应的速度范围、速度等级或速度门限。 结合第二方面, 在一种可能的实现方式中, 所述方法还包括: 向所述 UE发送服务小区的预定义质量门限, 以使得所述 UE在服务 小区的信号质量低于所述 UE的移动速度对应的预定义质量门限时, 触发 测量。
结合第二方面, 在一种可能的实现方式中, 所述方法还包括: 向所述 UE下发速度确定指示, 以触发所述 UE确定移动速度或重选 速度。
结合第二方面和以上可能的实现方式, 在另一种可能的实现方式中, 所述方法还包括:
向所述 UE下发时长参数;
其中, 所述时长参数用于触发所述测量的进一步限定条件: 指示所述 UE在所述移动速度超过服务小区对应的小区速度, 并持续一定时长后; 和 /或在进入特定类型或特定扰码的小区, 并持续一定时长后; 和 /或在所 述重选速度超过服务小区对应的重选速度, 并持续一定时长后; 和 /或, 当服务小区信号质量低于所述移动速度对应的预定义质量门限,并持续一 定时长后。
本申请的第三方面还提供一种 UE, 包括:
测量单元, 用于测量相邻小区的信号质量;
选择单元,用于根据相邻小区的小区速度信息和测量得到的信号质量 信息, 选择信号质量符合要求并且满足所述 UE的移动速度的小区。
结合第三方面, 在一种可能的实现方式中, 所述 UE还包括: 确定单元,用于在所述选择单元选择信号质量符合要求并且满足所述 UE的移动速度的小区之前, 确定所述 UE的移动速度或重选速度。
结合第三方面和以上可能的实现方式, 在另一种可能的实现方式中, 所述测量单元还用于在满足以下至少一个条件时, 触发测量:
所述移动速度超过服务小区对应的小区速度;
所述 UE的重选速度超过服务小区对应的重选速度; 所述 UE进入特定类型或特定扰码的小区;
服务小区的信号质量低于所述移动速度对应的预定义质量门限。
结合第三方面和以上可能的实现方式, 在另一种可能的实现方式中, 所述 UE还包括:
接收单元, 接收网络侧下发的小区速度信息和 /或服务小区的预定义 质量门限;
其中, 所述小区速度信息包括以下至少一种: 与小区类型对应的速度 范围、 速度等级或速度门限, 与小区扰码所在范围对应的速度范围、 速度 等级或速度门限, 与小区列表对应的速度范围、 速度等级或速度门限。
结合第三方面和以上可能的实现方式, 在另一种可能的实现方式中, 所述选择单元包括:
第一确定模块,用于将测量得到的信号质量信息与额定质量门限进行 比较, 确定信号质量符合要求的相邻小区;
第二确定模块, 用于将 UE的移动速度与所述信号质量符合要求的相 邻小区对应的小区速度信息进行比较,确定信号质量符合要求并且满足用 户设备 UE的移动速度的小区;
选择模块, 用于选择到所述信号质量符合要求并且满足用户设备 UE 的移动速度的小区中。
结合第三方面和以上可能的实现方式, 在另一种可能的实现方式中, 所述确定单元, 还用于当所述 UE 满足速度确定条件和 /或接收到网络侧 下发的速度确定指示时, 执行所述确定 UE的移动速度或重选速度。
结合第三方面和以上可能的实现方式, 在另一种可能的实现方式中, 所述确定单元还用于:
当所述移动速度超过服务小区对应的小区速度, 并持续一定时长后, 触发所述测量; 和 /或, 当进入特定类型或特定扰码的小区, 并持续一定 时长后, 触发所述测量; 和 /或, 当服务小区的信号质量低于所述移动速 度对应的预定义质量门限, 并持续一定时长后, 触发所述测量; 和 /或, 当所述 UE的重选速度超过服务小区对应的重选速度,并持续一定时长后, 触发所述测量。
结合第三方面和以上可能的实现方式, 在另一种可能的实现方式中, 所述 UE还包括:
配置单元, 用于配置网络侧下发的、 预先约定的和 /或自行配置的所 述一定时长。
本申请的第四方面还提供一种网络节点, 包括:
存储单元, 用于存储小区速度信息;
第一发送单元, 用于向 UE发送所述存储单元中存储的所述小区速度 信息和 /或服务小区的预定义质量门限, 以便所述 UE 选择信号质量符合 要求并且满足所述 UE的移动速度的小区;
其中, 所述小区速度信息包括以下至少一种: 与小区类型对应的速度 范围、 速度等级或速度门限, 或与小区扰码所在范围对应的速度范围、 速 度等级或速度门限,或与小区列表对应的速度范围、速度等级或速度门限。
结合第四方面, 在一种可能的实现方式中, 所述网络节点还包括: 第四发送单元, 用于向所述 UE发送服务小区的预定义质量门限, 以 使得所述 UE在服务小区的信号质量低于所述 UE的移动速度对应的预定 义质量门限时, 触发测量。
结合第四方面, 在一种可能的实现方式中, 所述网络节点还包括: 第二发送单元, 用于向所述 UE下发速度确定指示, 以触发所述 UE 确定移动速度或重选速度。
结合第四方面和以上可能的实现方式, 在另一种可能的实现方式中, 所述网络节点还包括:
第三发送单元, 用于向所述 UE下发时长参数;
其中, 所述时长参数用于: 指示所述 UE在所述移动速度超过服务小 区对应的小区速度, 并持续一定时长后, 触发所述测量; 和 /或在进入特 定类型或特定扰码的小区, 并持续一定时长后, 触发所述测量; 和 /或在 所述重选速度超过服务小区对应的重选速度, 并持续一定时长后, 触发所 述测量; 和 /或, 当服务小区的信号质量低于所述移动速度对应的预定义 质量门限, 并持续一定时长后, 触发所述测量。
本申请的第五方面还提供一种 UE, 包括:
存储器, 用于存储相邻小区的小区速度信息;
处理器, 用于测量相邻小区的信号质量; 根据存储器中存储的相邻小 区的小区速度信息和测量得到的信号质量信息,选择信号质量符合要求并 且满足所述 UE的移动速度的小区。
结合第五方面, 在一种可能的实现方式中, 所述处理器还用于: 在选 择信号质量符合要求并且满足所述移动速度的小区之前, 确定所述 UE的 移动速度或重选速度。
结合第五方面和以上可能的实现方式, 在另一种可能的实现方式中, 所述处理器还用于在满足以下至少一个条件时, 触发测量:
所述移动速度超过服务小区对应的小区速度;
所述 UE的重选速度超过服务小区对应的重选速度;
所述 UE进入特定类型或特定扰码的小区;
服务小区的信号质量低于所述移动速度对应的预定义质量门限。
结合第五方面和以上可能的实现方式, 在另一种可能的实现方式中, 所述 UE还包括:
接收器, 用于在所述处理器确定 UE的移动速度之前, 接收网络侧下 发的小区速度信息和 /或服务小区的预定义质量门限;
所述存储器, 还用于存储所述接收器接收的所述小区速度信息; 其中, 所述小区速度信息包括以下至少一种: 与小区类型对应的速度 范围、 速度等级或速度门限, 与小区扰码所在范围对应的速度范围、 速度 等级或速度门限, 与小区列表对应的速度范围、 速度等级或速度门限。
结合第五方面和以上可能的实现方式, 在另一种可能的实现方式中, 述处理器还用于: 当所述 UE 满足速度确定条件和 /或接收到网络侧下发 的速度确定指示时, 触发所述确定 UE的移动速度或重选速度。 结合第五方面和以上可能的实现方式, 在另一种可能的实现方式中, 所述处理器还用于: 当所述移动速度超过服务小区对应的小区速度, 并持 续一定时长后, 触发所述测量; 和 /或, 当进入特定类型或特定扰码的小 区, 并持续一定时长后, 触发所述测量; 和 /或, 当服务小区的信号质量 低于所述移动速度对应的预定义质量门限, 并持续一定时长后, 触发所述 测量; 和 /或, 当所述 UE 的重选速度超过服务小区对应的重选速度, 并 持续一定时长后, 触发所述测量。
结合第五方面和以上可能的实现方式, 在另一种可能的实现方式中, 所述处理器还用于配置网络侧下发的、 预先约定的和 /或自行配置的所述 一定时长。
本申请的第六方面还提供一种网络节点, 包括:
存储器, 用于存储小区速度信息和 /或服务小区的预定义质量门限; 发送器, 用于将所述存储器中存储的所述小区速度信息和 /或服务小 区的预定义质量门限发送给 UE, 以便所述 UE选择信号质量符合要求并 且满足所述 UE的移动速度的小区;
其中, 所述小区速度信息包括以下至少一种: 与小区类型对应的速度 范围、 速度等级或速度门限, 或与小区扰码所在范围对应的速度范围、 速 度等级或速度门限,或与小区列表对应的速度范围、速度等级或速度门限。
结合第六方面, 在一种可能的实现方式中, 所述发送器还用于: 向所 述 UE下发速度确定指示, 以触发所述 UE确定移动速度或重选速度。
结合第六方面和上述可能的实现方式, 在另一种可能的实现方式中, 所述发送器还用于: 向所述 UE发送服务小区的预定义质量门限, 以使得 所述 UE在服务小区的信号质量低于所述 UE的移动速度对应的预定义质 量门限时, 触发测量。
结合第六方面和上述可能的实现方式, 在另一种可能的实现方式中, 所述发送器还用于: 向所述 UE下发时长参数; 其中, 所述时长参数用于触发所述测量的进一步限定条件: 指示所述
UE在所述移动速度超过服务小区对应的小区速度, 并持续一定时长后; 和 /或在进入特定类型或特定扰码的小区, 并持续一定时长后; 和 /或在所 述重选速度超过服务小区对应的重选速度, 并持续一定时长后; 和 /或, 当服务小区的信号质量低于所述移动速度对应的预定义质量门限,并持续 一定时长后。
本申请实施例提供的小区选择方法、 UE和网络节点, 通过测量相邻 小区的信号质量,根据相邻小区的小区速度信息和测量得到的信号质量信 息, 选择信号质量符合要求并且满足 UE的移动速度的小区, 设定了不同 类型的小区所能满足的 UE移动速度, 可以根据 UE的移动速度为 UE选 择符合速度要求的小区, 避免 UE的移动速度较高而在短时间内移动到驻 留小区的边缘或移出驻留小区后发起连接时切换信令过多, 减少 UE的负 荷, 降低切换失败的风险。 附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案,下面将对 实施例或现有技术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面描述中的附图仅仅是本申请的一些实施例,对于本领域普通技术人员 来讲, 在不付出创造性劳动性的前提下, 还可以根据这些附图获得其他的 附图。
图 1为本申请一实施例中的一种小区选择方法流程图;
图 2为本申请另一实施例中的一种小区选择方法流程图;
图 3为本申请另一实施例中的一种 UE组成示意图;
图 4为本申请另一实施例中的另一种 UE组成示意图;
图 5为本申请另一实施例中的另一种 UE组成示意图;
图 6为本申请另一实施例中的一种小区选择方法流程图;
图 7为本申请另一实施例中的一种网络节点组成示意图;
图 8为本申请另一实施例中的一种网络节点组成示意图。 具体实施方式
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进 行清楚、完整地描述,显然,所描述的实施例仅仅是本申请一部分实施例, 而不是全部的实施例。 基于本申请中的实施例, 本领域普通技术人员在没 有作出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的 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 ( GSM , Global System for Mobile communications ) , 码分多址 ( CDMA , Code Division Multiple Access ) 系统, 时分多址 ( TDMA , Time Division Multiple Access ) 系统, 宽带码分多址 ( WCDMA , Wideband Code Division Multiple Access Wireless ), 频分多址 ( FDMA, Frequency Division Multiple Addressing ) 系统, 正交频分多址 ( OFDMA, Orthogonal Frequency-Division Multiple Access )系统,单载波 FDMA( SC-FDMA )系统,通用分组无线业务( GPRS , General Packet Radio Service )系统,长期演进( LTE , Long Term Evolution ) 系统, 以及其他此类通信系统。
本文中结合终端和 /或基站和 /或基站节点来描述各种方面。
用户设备, 可以是无线终端也可以是有线终端, 无线终端可以是指向 用户提供语音和 /或数据连通性的设备, 具有无线连接功能的手持式设备、 或连接到无线调制解调器的其他处理设备。 无线终端可以经无线接入网 (例如, RAN, Radio Access Network ) 与一个或多个核心网进行通信, 无线终端可以是移动终端, 如移动电话(或称为"蜂窝"电话)和具有移动 终端的计算机, 例如, 可以是便携式、 袖珍式、 手持式、 计算机内置的或 者车载的移动装置, 它们与无线接入网交换语言和 /或数据。 例如, 个人 通信业务 ( PCS , Personal Communication Service ) 电话、 无绳电话、 会 话发起协议( SIP )话机、 无线本地环路 ( WLL , Wireless Local Loop )站、 个人数字助理 (PDA , Personal Digital Assistant ) 等设备。 无线终端也可 以称为系统、 订户单元 ( Subscriber Unit )、 订户站 ( Subscriber Station ), 移动站 ( Mobile Station )、 移动台 ( Mobile ), 远程站 ( Remote Station )、 接入点 ( Access Point )、 远程终端 ( Remote Terminal )、 接入终端 (Access Terminal ), 用户终端 ( User Terminal )、 用户代理 (User Agent )、 用户设 备 ( User Equipment )。
基站(例如, 接入点)可以是指接入网中在空中接口上通过一个或多 个扇区与无线终端通信的设备。 基站可用于将收到的空中帧与 IP分组进 行相互转换, 作为无线终端与接入网的其余部分之间的路由器, 其中接入 网的其余部分可包括网际协议(IP ) 网络。 基站还可协调对空中接口的属 性管理。例如,基站可以是 GSM或 CDMA中的基站( BTS , Base Transceiver Station ), 也可以是 WCDMA 中的基站 ( NodeB ), 还可以是 LTE 中的演 进型基站 ( NodeB或 eNB或 e-NodeB , evolutional Node B ), 本申请并不 限定。
基站控制器 (源节点或目标节点), 可以是 GSM或 CDMA中的基站 控制器 (BSC , base station controller ), 也可以是 WCDMA中的无线网络 控制器 (RNC , Radio Network Controller ), 本申请并不限定。
另外, 本文中术语"系统"和"网络"在本文中常被可互换使用。 本文中 术语"和 /或", 仅仅是一种描述关联对象的关联关系, 表示可以存在三种 关系 , 例如, A和 /或 B , 可以表示: 单独存在 A , 同时存在 A和 B , 单 独存在 B这三种情况。 另外, 本文中字符 "/" , 一般表示前后关联对象是 一种 "或" 的关系。 本申请实施例提供一种小区选择方法,如图 1所示,该方法可以包括:
101、 测量相邻小区的信号质量。
102、 根据相邻小区的小区速度信息和测量得到的信号质量信息, 选 择信号质量符合要求并且满足用户设备 UE的移动速度的小区。
其中, 由于 UE的移动速度较高的情况下可能在短时间内迅速移动到 服务小区的覆盖边缘, 或离开服务小区的覆盖范围, 此时, 若 UE发起连 接则会产生频繁切换或切换失败的问题。 因此为了避免 UE在高速移动时 发起连接后连接失败, 可以根据 UE速度选择覆盖范围合适的驻留小区。 例如, 对于高速移动的 UE可以选择覆盖范围较广的宏小区, 对于不移动 或移动速度较低的 UE则可以选择覆盖范围较小的微小区。
在本实施例中, UE处于空闲状态, 在服务小区中驻留, 为了适应 UE 的移动速度, 在信号质量满足要求的情况下, UE可以根据移动速度选择 能够满足速度要求的小区, 在该小区中驻留, 即重选 (reselect ) 小区。 从而, 避免在覆盖范围较小的小区中驻留而导致发起连接时需要频繁切 换, 甚至导致切换失败的问题。
需要说明的是, 小区速度信息可以由网络侧进行配置并下发给 UE, 也可以是预先约定各个类型的小区分别对应的小区速度信息。小区速度信 息可以是一个速度范围, 或者速度等级, 或者速度门限等。
所述信号质量符合要求是指相邻小区的信号质量满足 U E驻留的最 低门限。进一步的可以包含高于服务小区或低于服务小区一定门限的信号 质量。
本申请实施例提供的小区选择方法,根据相邻小区的小区速度信息和 测量得到的信号质量信息, 选择信号质量符合要求并且满足 UE的移动速 度的小区, 设定了不同类型的小区所能满足的 UE 移动速度, 可以根据 UE的移动速度为 UE选择符合速度要求的小区, 避免 UE的移动速度较 高而在短时间内移动到驻留小区的边缘或移出驻留小区后发起连接时切 换信令过多, 减少 UE的负荷, 降低切换失败的风险。 本申请另一实施例提供一种小区选择方法, 如图 2所示, 可以包括: 201、 接收网络侧下发的小区速度信息。
需要说明的是, 所述小区速度信息包括以下至少一种: 与小区类型对 应的速度范围、速度等级或速度门限, 与小区扰码所在范围对应的速度范 围、 速度等级或速度门限, 与小区列表对应的速度范围、 速度等级或速度 门限。小区速度信息可以通过广播或用于下发速度信息的专用消息发送给
UE。
其中, 网络侧可以在下发的小区重选参数中包含小区速度信息。 具体 的, 网络侧可以下发各种小区类型对应的适合的速度范围、速度等级或速 度门限。 一种方法是, 网络侧还可以下发相邻小区的小区类型, 包括宏小 区、 微小区、 微微小区等。 这样, UE就可以根据相邻小区的小区类型, 确定相邻小区适合的速度范围, 并通过确定 UE 自身的移动速度确定是否 适合在该小区中驻留。 另一种方法是, 网络侧也可以不下发显式的小区类 型指示, UE可以根据其他小区信息来判定相邻小区适合的速度范围, 例 如可以根据相邻小区的扰码所在范围确定其对应的速度范围。其中速度门 限可以是适合 UE的最高速度值。
在本实施例中, 步骤 201 是可选步骤, 也可以不执行步骤 201 , 在 UE和网络侧分别约定和配置不同小区类型对应的适合速度范围、 速度等 级或速度门限。 这样, 网络侧仅下发小区类型指示, UE便可以根据相邻 小区的小区类型确定其所适合的速度范围。 同理, 也可以根据小区扰码确 定小区适合的速度范围。
或者, 小区速度信息也可以是基于小区列表的, 例如一组小区列表对 应一个速度范围、 速度等级或速度门限。 一组小区列表中可以包括至少一 个小区, 可以配置单个小区对应的速度范围, 也可以配置多个小区组成的 小区列表对应的速度范围。
进一步的, UE可以在一定触发条件下启动确定 UE移动速度的流程, 本实施例的方法还可以包括以下步骤 202:
202、 UE满足速度确定条件和 /或接收到网络侧下发的速度确定指示。 其中, 满足速度确定条件可以为: UE服务小区的小区类型属于启动 速度确定流程的小区类型, 或者 UE服务小区的扰码所在范围属于启动速 度确定流程的扰码范围。 例如, 由于宏小区覆盖范围较大, UE可以不用 考虑高速移动的问题, 则可以不启动速度确定流程; 而微小区覆盖范围较 小, UE存在高速移动, 并在发起连接时就离开微小区的风险, 因此满足 速度确定条件, 当 UE接入到微小区时即可启动速度确定流程。
其中, 满足速度确定条件还可以为: 进入特定类型或特定扰码的小区 并持续一段时间后, 再启动速度确定流程。 或者, 满足速度确定条件还可 以为: UE在一定时间内感知到信号变化超过一定幅度后, 再启动速度确 定流程。
或者, 也可以将网络侧下发的速度确定指示作为启动 UE速度确定流 程的触发条件。 例如, 当 UE接收到网络侧下发的用于启动速度确定流程 的广播消息, 或接收到网络侧下发的用于启动速度确定流程的信令指示, 则可以启动速度确定流程, 执行步骤 203。
203、 确定用户设备 UE的移动速度。
其中, UE可以通过定位功能和计时功能或通过专门的测速功能确定 移动速度, 也可以直接根据已存储的移动速度信息确定移动速度信息。 例 如, UE在步骤 203之前已通过其他应用程序获取 UE的移动速度, 则可 以在步骤 203中直接读取已存储的移动速度信息。 进一步的, 也可以判定 已存储的移动速度信息是否具有时效性,若上一次获取移动速度的时间距 离当前时刻比较久, 则可以重新确定 UE的移动速度。
可以理解的是, 可以在步骤 202之后确定用户设备 UE的移动速度或 重选速度, 也可以在其他合适的时机确定 UE的移动速度或重选速度, 可 以在步骤 204之前, 也可以在步骤 204之后。 同理, 步骤 201 中的小区速 度信息可以在测量相邻小区之前, 也可以在测量相邻小区之后。 例如, 可 以先确定 UE的移动速度, 获取服务小区的预定义质量门限和相邻小区的 小区速度信息,在服务小区的信号质量低于当前移动速度对应的预定义质 量门限时, 触发步骤 204的测量操作。 或者, 也可以在进入微小区时触发 测量, 再确定 UE的移动速度, 再获取相邻小区的小区速度信息, 从信号 质量符合要求的相邻小区中选择能够满足 UE的移动速度的小区。 204、 触发测量。
触发测量的方法可以为: 当所述移动速度超过服务小区对应的小区速 度时, 触发测量。
其中, 如步骤 201 中所描述的 UE可以预先配置或从网络侧获取服务 小区的小区速度信息, 小区速度并不是小区基站的处理能力决定的, 而是 由于小区的覆盖范围大小不同, 决定的小区适合的 UE速度范围、 或速度 门限、 速度等级等。 例如, 当 UE的移动速度超出该速度范围, 或高于速 度门限、 或超出速度等级时, 说明 UE在当前移动速度下会发生离开服务 小区覆盖范围的风险, 因此可以触发测量, 及时为 UE选择覆盖范围较广 的小区速度较高的小区。
进一步的, 触发测量的方法也可以为: 获取所述 UE的重选速度; 当 所述 UE的重选速度超过服务小区对应的重选速度时, 触发测量。 这样, UE可以在移动速度和重选速度中的任意一个超过预定范围时,触发测量, 提高了 UE服务的稳定性。 其中, 所述重选速度为一定时间内 UE重选的 次数。
进一步可选的, 触发测量的方法还可以为: 当服务小区的信号质量低 于所述移动速度对应的预定义质量门限时, 触发测量。 其中, 服务小区的 预定义的质量门限可以为不同移动速度对应不同的质量门限, UE根据实 际移动速度选择对应的质量门限。 例如, 为低速 UE设置较低的门限, 为 高速 UE设置较高的门限, UE可以根据当前移动速度确定应采用的质量 门限。 可以理解的是, 预定义质量门限可以为网络下发、 预先约定和 /或 自行配置的参数。 可以理解的是, 上述触发测量的方法之间是 "和 /或" 的关系。 即在实际应用中, 可以选择上述触发测量的条件中的一个或多个 的组合。 例如, 当满足其中一个触发条件时, 可以触发测量; 或者, 当同 时满足其中多个条件时, 触发测量。
进一步的, 为了适当减少 UE测量, 降低 UE功耗, 可以将触发测量 的条件设置得更为严格。 例如, 当所述移动速度超过服务小区对应的小区 速度, 并持续一定时长后, 触发所述测量。 当 UE可以在服务小区信号质 量低于 UE移动速度对应的预定义质量门限时触发测量, 且持续一定时长 后, 触发所述测量。 当进入特定类型或特定扰码的小区, 触发测量。 当 UE进入特定类型或特定扰码的小区, 并持续一定时长后, 触发所述测量。 可以理解的是, 所述一定时长可以为网络侧下发、 预先约定和 /或自行配 置的参数。
205、 根据相邻小区的小区速度信息和测量得到的信号质量信息, 选 择信号质量符合要求并且满足所述移动速度的小区。
其中, 选择信号质量符合要求并且满足用户设备 UE的移动速度的小 区的方法可以包括: 将测量得到的信号质量信息与额定质量门限进行比 较, 确定信号质量符合要求的相邻小区; 将 UE的移动速度与所述信号质 量符合要求的相邻小区对应的小区速度信息进行比较,确定信号质量符合 要求并且满足用户设备 UE的移动速度的小区; 选择到所述信号质量符合 要求并且满足用户设备 UE的移动速度的小区中。
当然, 也可以先确定符合 UE移动速度的相邻小区, 再从符合移动速 度的相邻小区中选择信号质量高于额定质量门限的小区。确定信号质量符 合要求的相邻小区和确定满足 UE的移动速度的小区, 两者的先后顺序本 发明不做限定。
例如, UE当前驻留的小区为微小区, 适合的速度范围为中速, 而当 前 UE的移动速度为高速, 则可以触发步骤 204进行测量。 相邻小区的小 区速度信息和测量得到的结果如下: 相邻小区 A是微小区, 信号质量高, 但速度等级为低速; 相邻小区 B 是宏小区, 速度等级是高速, 但信号质 量较低; 相邻小区 C 是宏小区, 信号质量高, 并且速度等级为高速。 按 照以上测量结果和小区速度信息, 便可确定高速移动的 U E应当选入信号 质量高并且适合高速 UE的宏小区 C。 当然, 如果测量得到的结果和小区 速度信息表明, 相邻小区中没有符合信号质量要求并能满足 UE移动速度 的小区, 则可以不进行重选。 可选的, 网络可以设置不同速度对应的重选小区的预定义质量门限。 例如, 高速 UE对应的门限较低, 低速 UE对应的门限较高, 使得高速 UE 更容易能够选择重选到适合的小区。
本申请实施例提供的小区选择方法,根据相邻小区的小区速度信息和 测量得到的信号质量信息, 选择信号质量符合要求并且满足 UE的移动速 度的小区, 设定了不同类型的小区所能满足的 UE 移动速度, 可以根据 UE的移动速度为 UE选择符合速度要求的小区, 避免 UE的移动速度较 高而在短时间内移动到驻留小区的边缘或移出驻留小区后发起连接时切 换信令过多, 减少 UE的负荷, 降低切换失败的风险。
并且, UE通过在移动速度超过服务小区适合的速度范围时, 触发小 区测量, 重新选入可以满足 UE当前移动速度的小区, 可以避免 UE高速 移动的情况下短时间内离开驻留小区而不能及时触发小区重选的问题。 本申请另一实施例提供一种用户设备 UE, 如图 3所示, 包括: 测量 单元 31、 选择单元 32。
测量单元 31 , 用于测量相邻小区的信号质量。
选择单元 32 , 用于根据相邻小区的小区速度信息和测量得到的信号 质量信息, 选择信号质量符合要求并且满足所述 UE的移动速度的小区。
进一步的, 如图 4所示, 所述 UE还包括: 确定单元 33。
确定单元 33 , 用于在所述选择单元 32选择信号质量符合要求并且满 足所述 UE的移动速度的小区之前,确定所述 UE的移动速度或重选速度。
进一步的, 所述测量单元 31还用于在满足以下至少一个条件时, 触 发测量: 所述移动速度超过服务小区对应的小区速度; 所述 UE的重选速 度超过服务小区对应的重选速度; 所述 UE进入特定类型或特定扰码的小 区; 服务小区的信号质量低于所述移动速度对应的预定义质量门限。
进一步的, 所述 UE还包括: 接收单元 34。
接收单元 34, 用于在所述确定单元 33确定 UE的移动速度之前, 接 收网络侧下发的小区速度信息和 /或服务小区的预定义质量门限。
其中, 所述小区速度信息包括以下至少一种: 与小区类型对应的速度 范围、 速度等级或速度门限, 与小区扰码所在范围对应的速度范围、 速度 等级或速度门限, 与小区列表对应的速度范围、 速度等级或速度门限。
进一步的, 所述选择单元 32 包括: 第一确定模块 321、 第二确定模 块 322、 选择模块 323。
第一确定模块 321 , 用于将所述测量单元 31 测量得到的信号质量信 息与额定质量门限进行比较, 确定信号质量符合要求的相邻小区。
第二确定模块 322 , 用于将 UE的移动速度与所述信号质量符合要求 的相邻小区对应的小区速度信息进行比较,从所述第一确定单元 321确定 的信号质量符合要求的相邻小区中确定信号质量符合要求并且满足用户 设备 UE的移动速度的小区。
选择模块 323 , 用于选择到所述第二确定单元 322确定的信号质量符 合要求并且满足用户设备 UE的移动速度的小区中。
进一步的, 所述确定单元 33 , 还用于当所述 UE满足速度确定条件和 /或接收到网络侧下发的速度确定指示时, 执行所述确定 UE 的移动速度 或重选速度。
进一步的, 所述确定单元 33还用于: 当所述移动速度超过服务小区 对应的小区速度, 并持续一定时长后, 触发所述测量; 和 /或, 当进入特 定类型或特定扰码的小区, 并持续一定时长后, 触发所述测量; 和 /或, 当服务小区的信号质量低于所述移动速度对应的预定义质量门限,并持续 一定时长后, 触发所述测量; 和 /或, 当所述 UE 的重选速度超过服务小 区对应的重选速度, 并持续一定时长后, 触发所述测量。
进一步的, 所述 UE还包括: 配置单元 35。
配置单元 35 , 用于配置网络侧下发的、 预先约定的和 /或自行配置的 所述一定时长。
需要说明的是,本申请实施例中部分单元和模块的具体描述可以参考 方法实施例中的对应内容, 本申请实施例这里不再——贅述。
本申请实施例提供的 UE, 根据相邻小区的小区速度信息和测量得到 的信号质量信息,选择信号质量符合要求并且满足 UE的移动速度的小区, 设定了不同类型的小区所能满足的 UE移动速度, 可以根据 UE的移动速 度为 UE选择符合速度要求的小区, 避免 UE的移动速度较高而在短时间 内移动到驻留小区的边缘或移出驻留小区后发起连接时切换信令过多,减 少 UE的负荷, 降低切换失败的风险。
并且, UE通过在移动速度超过服务小区适合的速度范围时, 触发小 区测量, 重新选入可以满足 UE当前移动速度的小区, 可以避免 UE高速 移动的情况下短时间内离开驻留小区而不能及时触发小区重选的问题。 本申请另一实施例还提供一种 UE, 如图 5 所示, 包括: 存储器 43 和处理器 41。
存储器 43 , 用于存储相邻小区的小区速度信息。
处理器 41 , 用于测量相邻小区的信号质量; 根据存储器 43中存储的 相邻小区的小区速度信息和测量得到的信号质量信息,选择信号质量符合 要求并且满足所述 UE的移动速度的小区。
进一步的, 述处理器 41还用于: 在选择信号质量符合要求并且满足 所述移动速度的小区之前, 确定所述 UE的移动速度或重选速度。
所述处理器 41还用于: 当所述移动速度超过服务小区对应的小区速 度时, 触发测量; 和 /或, 当进入特定类型或特定扰码的小区后, 触发测 量; 当所述移动速度超过服务小区对应的小区速度时, 触发测量; 和 /或, 当进入特定类型或特定扰码的小区后, 触发测量; 和 /或, 当服务小区的 信号质量低于所述移动速度对应的预定义质量门限时, 触发测量。
进一步的, 所述 UE还包括: 接收器 42。
接收器 42 , 用于在所述处理器 41确定 UE的移动速度之前, 接收网 络侧下发的小区速度信息和 /或服务小区的预定义质量门限。 所述存储器 43 ,还用于存储所述接收器 42接收的所述小区速度信息。 其中, 所述小区速度信息包括以下至少一种: 与小区类型对应的速度 范围、 速度等级或速度门限, 或与小区扰码所在范围对应的速度范围、 速 度等级或速度门限,或与小区列表对应的速度范围、速度等级或速度门限。
进一步的, 所述处理器 41还用于: 当所述 UE满足速度确定条件和 / 或接收到网络侧下发的速度确定指示时, 触发所述确定 UE的移动速度或 重选速度。
进一步的, 所述处理器 41还用于: 当所述移动速度超过服务小区对 应的小区速度, 并持续一定时长后, 触发所述测量; 和 /或, 当服务小区 的信号质量低于所述移动速度对应的预定义质量门限, 并持续一定时长 后, 触发所述测量; 和 /或, 当所述 UE 的重选速度超过服务小区对应的 重选速度, 并持续一定时长后, 触发所述测量。
进一步的, 所述处理器 41还用于配置网络侧下发的、 预先约定的和 / 或自行配置的所述一定时长。
需要说明的是,本申请实施例中部分器件的具体描述可以参考方法实 施例和装置实施例中的对应内容, 本申请实施例这里不再——贅述。
本申请实施例提供的 UE, 根据相邻小区的小区速度信息和测量得到 的信号质量信息,选择信号质量符合要求并且满足 UE的移动速度的小区, 与现有技术中仅根据 UE在一定时间内的重选次数触发小区重选的技术相 比, 设定了不同类型的小区所能满足的 UE移动速度, 可以根据 UE的移 动速度为 UE选择符合速度要求的小区, 避免 UE的移动速度较高而在短 时间内移动到驻留小区的边缘或移出驻留小区后发起连接时切换信令过 多, 减少 UE的负荷, 降低切换失败的风险。
并且, UE通过在移动速度超过服务小区适合的速度范围时, 触发小 区测量, 重新选入可以满足 UE当前移动速度的小区, 可以避免 UE高速 移动的情况下短时间内离开驻留小区而不能及时触发小区重选的问题。 本申请另一实施例还提供一种小区选择方法, 可以应用于网络侧, 如 图 6所示, 可以包括:
501、 向 UE发送小区速度信息, 以便所述 UE选择信号质量符合要 求并且满足所述 UE的移动速度的小区。
其中, 所述小区速度信息包括以下至少一种: 与小区类型对应的速度 范围、 速度等级或速度门限, 或与小区扰码所在范围对应的速度范围、 速 度等级或速度门限,或与小区列表对应的速度范围、速度等级或速度门限。
其中, UE可以在所述移动速度超过所述服务小区对应的小区速度, 触发测量; 和 /或可以在进入特定类型或特定扰码的小区, 触发测量; 和 / 或可以在所述重选速度超过服务小区对应的重选速度, 触发测量; 和 /或 UE可以在服务小区的信号质量低于所述移动速度对应的预定义质量门限 时, 触发测量。
其中,服务小区的预定义的质量门限可以为不同移动速度对应不同的 质量门限, UE根据实际移动速度选择对应的质量门限。 例如, 为低速 UE 设置较低的门限, 为高速 UE设置较高的门限, UE可以根据当前移动速 度确定应采用的质量门限。 可以理解的是, 预定义质量门限可以为网络下 发、 预先约定和 /或自行配置的参数。
进一步的, 可以通过网络指示启动 UE进行速度确定的流程, 所述方 法还可以包括:
502、 向所述 UE下发速度确定指示, 以触发所述 UE确定移动速度。 进一步的, 为了适当减少测量次数, 降低 UE负荷, 所述方法还包括:
503、 向所述 UE下发时长参数。
其中, 所述时长参数用于: 指示所述 UE在所述移动速度超过服务小 区对应的小区速度, 并持续一定时长后, 触发所述测量; 和 /或在进入特 定类型或特定扰码的小区, 并持续一定时长后, 触发所述测量; 和 /或在 所述重选速度超过服务小区对应的重选速度, 并持续一定时长后, 触发所 述测量; 和 /或, 当服务小区的信号质量低于所述移动速度对应的预定义 质量门限, 并持续一定时长后, 触发所述测量。
进一步可选的, 还可以通过网络侧下发预定义质量门限。 所述方法还 可以包括: 网络节点向所述 UE发送服务小区的预定义质量门限, 以使得 所述 UE在服务小区的信号质量低于所述 UE的移动速度对应的预定义质 量门限时, 触发测量。
需要说明的是,本申请实施例中部分步骤的具体描述可以参考本说明 书其他实施例的具体描述, 本申请实施例这里不再详细贅述。
本申请另一实施例还提供一种网络节点, 如图 7所示, 包括: 第一发 送单元 61和存储单元 64。
存储单元 64 , 用于存储小区速度信息。
第一发送单元 61 , 用于将所述存储单元 64中存储的所述小区速度信 息发送给 UE, 以便所述 UE选择信号质量符合要求并且满足所述 UE的 移动速度的小区。
其中, 所述小区速度信息包括以下至少一种: 与小区类型对应的速度 范围、 速度等级或速度门限, 或与小区扰码所在范围对应的速度范围、 速 度等级或速度门限,或与小区列表对应的速度范围、速度等级或速度门限。
进一步的, 所述网络节点还可以包括: 第二发送单元 62。
第二发送单元 62 , 用于向所述 UE 下发速度确定指示, 以触发所述 UE确定移动速度或重选速度。
进一步的, 所述网络节点还可包括: 第三发送单元 63。
第三发送单元 63 , 用于向所述 UE下发时长参数。
其中, 所述时长参数用于: 指示所述 UE在所述移动速度超过服务小 区对应的小区速度, 并持续一定时长后, 触发所述测量; 和 /或在进入特 定类型或特定扰码的小区, 并持续一定时长后, 触发所述测量; 和 /或在 所述重选速度超过服务小区对应的重选速度, 并持续一定时长后, 触发所 述测量; 和 /或, 当服务小区的信号质量低于所述移动速度对应的预定义 质量门限, 并持续一定时长后, 触发所述测量。 进一步的, 该网络节点还可以包括: 第四发送单元 65 , 用于向所述 UE发送服务小区的预定义质量门限, 以使得所述 UE在服务小区的信号 质量低于所述 UE的移动速度对应的预定义质量门限时, 触发测量。
本申请另一实施例还提供一种网络节点, 如图 8所示, 包括: 发送器 71和存储器 72。
存储器 72,用于存储小区速度信息和 /或服务小区的预定义质量门限。 发送器 71 ,用于将所述存储器中存储的所述小区速度信息发送给 UE, 以便所述 UE 选择信号质量符合要求并且满足所述 UE 的移动速度的小 区。
其中, 所述小区速度信息包括以下至少一种: 与小区类型对应的速度 范围、 速度等级或速度门限, 或与小区扰码所在范围对应的速度范围、 速 度等级或速度门限,或与小区列表对应的速度范围、速度等级或速度门限。
进一步的, 所述发送器 71还用于: 向所述 UE下发速度确定指示, 以触发所述 U E确定移动速度或重选速度。
进一步的, 所述发送器 71 , 还用于向所述 UE发送服务小区的预定义 质量门限, 以使得所述 UE在服务小区的信号质量低于所述 UE的移动速 度对应的预定义质量门限时, 触发测量。
进一步的, 所述发送器 71还用于: 向所述 UE下发时长参数。
其中, 所述时长参数用于: 指示所述 UE在所述移动速度超过服务小 区对应的小区速度, 并持续一定时长后, 触发所述测量; 和 /或在进入特 定类型或特定扰码的小区, 并持续一定时长后, 触发所述测量; 和 /或在 所述重选速度超过服务小区对应的重选速度, 并持续一定时长后, 触发所 述测量; 和 /或, 当服务小区的信号质量低于所述移动速度对应的预定义 质量门限, 并持续一定时长后, 触发所述测量。
本申请另一实施例还提供一种小区选择系统, UE和网络节点。
所述 UE , 用于测量相邻小区的信号质量; 根据相邻小区的小区速度 信息和测量得到的信号质量信息, 选择信号质量符合要求并且满足所述 UE的移动速度的小区。
所述网络节点, 用于向 UE发送小区速度信息, 以便所述 UE选择信 号质量符合要求并且满足所述 UE的移动速度的小区。
本申请实施例提供的网络节点和小区选择系统,根据相邻小区的小区 速度信息和测量得到的信号质量信息, 选择信号质量符合要求并且满足 UE的移动速度的小区, 与现有技术中仅根据 UE在一定时间内的重选次 数触发小区重选的技术相比, 设定了不同类型的小区所能满足的 UE移动 速度,可以根据 UE的移动速度为 UE选择符合速度要求的小区,避免 UE 的移动速度较高而在短时间内移动到驻留小区的边缘或移出驻留小区后 发起连接时切换信令过多, 减少 UE的负荷, 降低切换失败的风险。
所属领域的技术人员可以清楚地了解到, 为描述的方便和简洁, 仅以 上述各功能模块的划分进行举例说明, 实际应用中, 可以根据需要而将上 述功能分配由不同的功能模块完成,即将装置的内部结构划分成不同的功 能模块, 以完成以上描述的全部或者部分功能。 上述描述的系统, 装置和 单元的具体工作过程, 可以参考前述方法实施例中的对应过程, 在此不再 贅述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统, 装置 和方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅 是示意性的, 例如, 所述模块或单元的划分, 仅仅为一种逻辑功能划分, 实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可 以集成到另一个系统, 或一些特征可以忽略, 或不执行。 另一点, 所显示 或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装 置或单元的间接耦合或通信连接, 可以是电性, 机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的, 作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地 方, 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其中的 部分或者全部单元来实现本实施例方案的目的。 另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元 中, 也可以是各个单元单独物理存在, 也可以两个或两个以上单元集成在 一个单元中。 上述集成的单元既可以采用硬件的形式实现, 也可以采用软 件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品 销售或使用时, 可以存储在一个计算机可读取存储介质中。 基于这样的理 解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技 术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品 存储在一个存储介质中, 包括若干指令用以使得一台计算机设备(可以是 个人计算机, 服务器, 或者网络设备等) 或处理器(processor )执行本申 请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括: U盘、 移动硬盘、 只读存储器 (ROM , Read-Only Memory ) , 随机存取存储器 ( RAM , Random Access Memory )、 磁碟或者光盘等各种可以存储程序代 码的介质。
以上所述, 以上实施例仅用以说明本申请的技术方案, 而非对其限制; 尽 管参照前述实施例对本申请进行了详细的说明,本领域的普通技术人员应 当理解: 其依然可以对前述各实施例所记载的技术方案进行修改, 或者对 其中部分技术特征进行等同替换; 而这些修改或者替换, 并不使相应技术 方案的本质脱离本申请各实施例技术方案的精神和范围。

Claims

权 利 要 求 书
1、 一种小区选择方法, 其特征在于, 包括:
测量相邻小区的信号质量;
根据相邻小区的小区速度信息和测量得到的信号质量信息, 选择信号 质量符合要求并且满足用户设备 UE的移动速度的小区。
2、 根据权利要求 1所述的方法, 其特征在于, 在选择信号质量符合要 求并且满足 UE的移动速度的小区之前, 所述方法还包括:
确定所述 UE的移动速度或重选速度。
3、 根据权利要求 1或 2所述的方法, 其特征在于, 在满足以下至少一 个条件时, 触发测量:
所述移动速度超过服务小区对应的小区速度;
所述 UE的重选速度超过服务小区对应的重选速度;
所述 UE进入特定类型或特定扰码的小区;
服务小区的信号质量低于所述移动速度对应的预定义质量门限。
4、 根据权利要求 1-3中任一项所述的方法, 其特征在于, 在选择信号 质量符合要求并且满足 UE的移动速度的小区之前, 所述方法还包括: 接收网络侧下发的小区速度信息和 /或服务小区的预定义质量门限; 其中, 所述小区速度信息包括:
与小区类型对应的速度范围、 速度等级或速度门限; 和 /或
与小区扰码所在范围对应的速度范围、 速度等级或速度门限; 和 /或 与小区列表对应的速度范围、 速度等级或速度门限。
5、 根据权利要求 4所述的方法, 其特征在于, 所述根据相邻小区的小 区速度信息和测量得到的信号质量信息, 选择信号质量符合要求并且满足 用户设备 UE的移动速度的小区, 包括:
将测量得到的信号质量信息与额定质量门限进行比较, 确定信号质量 符合要求的相邻小区;
将 UE 的移动速度与所述信号质量符合要求的相邻小区对应的小区速 度信息进行比较, 确定信号质量符合要求并且满足用户设备 UE 的移动速 度的小区;
选择到所述信号质量符合要求并且满足用户设备 UE 的移动速度的小 区中。
6、 根据权利要求 2所述的方法, 其特征在于, 所述方法还包括: 当所述 UE满足速度确定条件和 /或接收到网络侧下发的速度确定指示 时, 触发所述确定 UE的移动速度或重选速度。
7、 根据权利要求 3所述的方法, 其特征在于,
所述移动速度超过服务小区对应的小区速度包括: 所述移动速度超过 服务小区对应的小区速度, 并持续一定时长;
所述 UE进入特定类型或特定扰码的小区包括:所述 UE进入特定类型 或特定扰码的小区, 并持续一定时长;
所述服务小区的信号质量低于预定义质量门限包括: 服务小区的信号 质量低于所述移动速度对应的预定义质量门限, 并持续一定时长。
8、 根据权利要求 7所述的方法, 其特征在于, 所述一定时长为网络侧 下发、 预先约定和 /或自行配置的参数。
9、 一种小区选择方法, 其特征在于, 包括:
向 UE发送小区速度信息 ,以便所述 UE选择信号质量符合要求并且满 足所述 UE的移动速度的小区。
10、 根据权利要求 9所述的方法, 其特征在于, 所述方法还包括: 向所述 UE发送服务小区的预定义质量门限,以使得所述 UE在服务小 区的信号质量低于所述 UE 的移动速度对应的预定义质量门限时, 触发测 量。
11、根据权利要求 9或 10所述的方法,其特征在于, 所述方法还包括: 向所述 UE下发速度确定指示,以触发所述 UE确定移动速度或重选速 度。
12、 根据权利要求 9-11 中任一项所述的方法, 其特征在于, 所述方法 还包括:
向所述 UE下发时长参数;
其中, 所述时长参数用于: 指示所述 UE在所述移动速度超过所述服 务小区对应的小区速度, 并持续一定时长后, 触发所述测量; 和 /或在进入 特定类型或特定扰码的小区, 并持续一定时长后, 触发所述测量; 和 /或在 所述重选速度超过服务小区对应的重选速度, 并持续一定时长后, 触发所 述测量; 和 /或, 当服务小区的信号质量低于所述移动速度对应的预定义质 量门限, 并持续一定时长后, 触发所述测量。
13、 一种用户设备 UE, 其特征在于, 包括:
测量单元, 用于测量相邻小区的信号质量;
选择单元, 用于根据相邻小区的小区速度信息和测量得到的信号质量 信息, 选择信号质量符合要求并且满足所述 UE的移动速度的小区。
14、 根据权利要求 13所述的 UE, 其特征在于, 还包括:
确定单元, 用于在所述选择单元选择信号质量符合要求并且满足所述 UE的移动速度的小区之前, 确定所述 UE的移动速度或重选速度。
15、 根据权利要求 13或 14所述的 UE, 其特征在于, 所述测量单元还 用于, 在满足以下至少一个条件时, 触发测量:
所述移动速度超过服务小区对应的小区速度;
所述 UE的重选速度超过服务小区对应的重选速度;
所述 UE进入特定类型或特定扰码的小区;
服务小区的信号质量低于所述移动速度对应的预定义质量门限。
16、 根据权利要求 13-15中任一项所述的 UE, 其特征在于, 还包括: 接收单元, 用于在所述确定单元确定 UE 的移动速度之前, 接收网络 侧下发的小区速度信息和 /或服务小区的预定义质量门限;
其中, 所述小区速度信息包括:
与小区类型对应的速度范围、 速度等级或速度门限; 和 /或
与小区扰码所在范围对应的速度范围、 速度等级或速度门限; 和 /或 与小区列表对应的速度范围、 速度等级或速度门限。
17、 根据权利要求 13所述的 UE, 其特征在于, 所述选择单元包括: 第一确定模块, 用于将所述测量单元测量得到的信号质量信息与额定 质量门限进行比较, 确定信号质量符合要求的相邻小区;
第二确定模块, 用于将 UE 的移动速度与所述信号质量符合要求的相 邻小区对应的小区速度信息进行比较, 从所述第一确定单元确定的信号质 量符合要求的相邻小区中确定信号质量符合要求并且满足用户设备 UE 的 移动速度的小区;
选择模块, 用于选择到所述第二确定单元确定的信号质量符合要求并 且满足用户设备 UE的移动速度的小区中。
18、 根据权利要求 14所述的 UE, 其特征在于,
所述确定单元, 还用于当所述 UE满足速度确定条件和 /或接收到网络 侧下发的速度确定指示时, 执行所述确定 UE的移动速度或重选速度。
19、 根据权利要求 15所述的 UE, 其特征在于, 所述确定单元还用于: 当所述移动速度超过服务小区对应的小区速度, 并持续一定时长后, 触发所述测量; 和 /或, 当进入特定类型或特定扰码的小区, 并持续一定时 长后, 触发所述测量; 和 /或, 当服务小区的信号质量低于所述移动速度对 应的预定义质量门限, 并持续一定时长后, 触发所述测量; 和 /或, 当所述 UE的重选速度超过服务小区对应的重选速度, 并持续一定时长后, 触发所 述测量。
20、 根据权利要求 19所述的 UE, 其特征在于, 还包括:
配置单元, 用于配置网络侧下发的、 预先约定的和 /或自行配置的所述 一定时长。
21、 一种网络节点, 其特征在于, 包括:
存储单元, 用于存储小区速度信息;
第一发送单元, 用于将所述存储单元中存储的所述小区速度信息和 /或 服务小区的预定义质量门限发送给 UE, 以便所述 UE选择信号质量符合要 求并且满足所述 UE的移动速度的小区。
22、 根据权利要求 21所述的网络节点, 其特征在于, 还包括: 第四发送单元, 用于向所述 UE发送服务小区的预定义质量门限, 以 使得所述 UE在服务小区的信号质量低于所述 UE的移动速度对应的预定义 质量门限时, 触发测量。
23、 根据权利要求 21或 22所述的网络节点, 其特征在于, 还包括: 第二发送单元, 用于向所述 UE 下发速度确定指示, 以触发所述 UE 确定移动速度或重选速度。
24、 根据权利要求 21-23 中任一项所述的网络节点, 其特征在于, 还 包括:
第三发送单元, 用于向所述 UE下发时长参数;
其中, 所述时长参数用于: 指示所述 UE在所述移动速度超过服务小 区对应的小区速度, 并持续一定时长后, 触发所述测量; 和 /或在进入特定 类型或特定扰码的小区, 并持续一定时长后, 触发所述测量; 和 /或在所述 重选速度超过服务小区对应的重选速度, 并持续一定时长后, 触发所述测 量; 和 /或, 当服务小区的信号质量低于所述移动速度对应的预定义质量门 限, 并持续一定时长后, 触发所述测量。
25、 一种用户设备 UE, 其特征在于, 包括:
存储器, 用于存储相邻小区的小区速度信息;
处理器, 用于测量相邻小区的信号质量; 根据存储器中存储的相邻小 区的小区速度信息和测量得到的信号质量信息, 选择信号质量符合要求并 且满足所述 UE的移动速度的小区。
26、 根据权利要求 25所述的 UE, 其特征在于, 所述处理器还用于: 在选择信号质量符合要求并且满足所述移动速度的小区之前,确定所述 UE 的移动速度或重选速度。
27、 根据权利要求 25或 26所述的 UE, 其特征在于, 所述处理器还用 于, 在满足以下至少一个条件时, 触发测量: 所述移动速度超过服务小区对应的小区速度;
所述 UE的重选速度超过服务小区对应的重选速度;
所述 UE进入特定类型或特定扰码的小区;
服务小区的信号质量低于所述移动速度对应的预定义质量门限。
28、 根据权利要求 25或 26所述的 UE, 其特征在于, 还包括: 接收器, 用于在所述处理器确定 UE 的移动速度之前, 接收网络侧下 发的小区速度信息和 /或服务小区的预定义质量门限;
所述存储器, 还用于存储所述接收器接收的所述小区速度信息; 其中, 所述小区速度信息包括:
与小区类型对应的速度范围、 速度等级或速度门限; 和 /或
与小区扰码所在范围对应的速度范围、 速度等级或速度门限; 和 /或 与小区列表对应的速度范围、 速度等级或速度门限。
29、 根据权利要求 25所述的 UE, 其特征在于, 所述处理器还用于: 当所述 UE满足速度确定条件和 /或接收到网络侧下发的速度确定指示时, 触发所述确定 UE的移动速度或重选速度。
30、 根据权利要求 26所述的 UE, 其特征在于, 所述处理器还用于: 当所述移动速度超过服务小区对应的小区速度, 并持续一定时长后, 触发 所述测量; 和 /或, 当进入特定类型或特定扰码的小区, 并持续一定时长后, 触发所述测量; 和 /或, 当服务小区的信号质量低于所述移动速度对应的预 定义质量门限, 并持续一定时长后, 触发所述测量; 和 /或, 当所述 UE的 重选速度超过服务小区对应的重选速度, 并持续一定时长后, 触发所述测 量。
31、 一种网络节点, 其特征在于, 包括:
存储器, 用于存储小区速度信息和 /或服务小区的预定义质量门限; 发送器, 用于将所述存储器中存储的所述小区速度信息发送给 UE, 以 便所述 UE选择信号质量符合要求并且满足所述 UE的移动速度的小区。
32、 根据权利要求 31所述的网络节点, 其特征在于, 所述发送器, 还用于向所述 UE发送服务小区的预定义质量门限, 以 使得所述 UE在服务小区的信号质量低于所述 UE的移动速度对应的预定义 质量门限时, 触发测量。
33、 根据权利要求 31或 32所述的网络节点, 其特征在于, 所述发送 器还用于: 向所述 UE下发速度确定指示, 以触发所述 UE确定移动速度或 重选速度。
34、 根据权利要求 31-33 中任一项所述的网络节点, 其特征在于, 所 述发送器还用于: 向所述 UE下发时长参数;
其中, 所述时长参数用于: 指示所述 UE在所述移动速度超过服务小 区对应的小区速度, 并持续一定时长后, 触发所述测量; 和 /或在进入特定 类型或特定扰码的小区, 并持续一定时长后, 触发所述测量; 和 /或在所述 重选速度超过服务小区对应的重选速度, 并持续一定时长后, 触发所述测 量; 和 /或, 当服务小区的信号质量低于所述移动速度对应的预定义质量门 限, 并持续一定时长后, 触发所述测量。
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