WO2019036933A1 - 小区重选的方法和终端设备 - Google Patents

小区重选的方法和终端设备 Download PDF

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Publication number
WO2019036933A1
WO2019036933A1 PCT/CN2017/098618 CN2017098618W WO2019036933A1 WO 2019036933 A1 WO2019036933 A1 WO 2019036933A1 CN 2017098618 W CN2017098618 W CN 2017098618W WO 2019036933 A1 WO2019036933 A1 WO 2019036933A1
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WO
WIPO (PCT)
Prior art keywords
terminal device
cell
paging area
initial paging
network
Prior art date
Application number
PCT/CN2017/098618
Other languages
English (en)
French (fr)
Inventor
杨宁
Original Assignee
Oppo广东移动通信有限公司
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 Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to US16/632,157 priority Critical patent/US10939343B2/en
Priority to AU2017429195A priority patent/AU2017429195A1/en
Priority to SG11202000416YA priority patent/SG11202000416YA/en
Priority to EP17922212.0A priority patent/EP3644639A4/en
Priority to MX2020001713A priority patent/MX2020001713A/es
Priority to PCT/CN2017/098618 priority patent/WO2019036933A1/zh
Priority to CN201780094069.7A priority patent/CN111095971B/zh
Priority to RU2020104823A priority patent/RU2753096C1/ru
Publication of WO2019036933A1 publication Critical patent/WO2019036933A1/zh
Priority to US17/153,563 priority patent/US20210144608A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/02Arrangements for optimising operational condition
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/08Reselecting an access point
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/20Selecting an access point
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/34Reselection control
    • H04W36/36Reselection control by user or terminal equipment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information

Definitions

  • Embodiments of the present invention relate to the field of communications, and more specifically, to a method and a terminal device for cell reselection.
  • eMBB Enhanced Mobile Broadband
  • URLLC Ultra-Reliable and Low Latency Communication
  • mMTC Massive Machine Type of Communication
  • eMBB aims at users to obtain multimedia content, services and data.
  • URLLC telemedicine operations
  • Typical features of mMTC include: high connection density, small data volume, delay-insensitive service, low cost and long life of the module.
  • RRC Radio Resource Control
  • RRC_INACTIVE radio resource control inactive
  • the network side configures a paging area of the radio access network (RAN) for the UE, and does not need to notify when the UE moves within the paging area.
  • the mobility behavior under RRC_IDLE is followed, that is, the cell selection reselection principle.
  • the UE moves out of the paging area, the UE is triggered to resume the RRC connection and re-acquire the paging area configured on the network side.
  • the UE in the RRC_INACTIVE state reselects the cell to camp in the manner of cell reselection during the mobile process.
  • cell reselection performs target cell selection according to frequency priority and cell measurement quality. If the UE in the RRC_INACTIVE state continues to use the cell selection criteria of the prior art, it may cause the UE to frequently initiate a location update procedure, thereby increasing the air interface signaling load.
  • a method and a terminal device for cell reselection are provided, which can effectively reduce the probability that the UE initiates a location update process, thereby reducing the air interface signaling load.
  • the first aspect provides a method for cell reselection, where the method is applied to a terminal device, where the connection between the terminal device and the network device is in an disconnected state, and the network device retains context information of the terminal device.
  • the context information is used to establish a connection between the terminal device and the network device; the method includes:
  • the serving cell of the terminal device is determined according to the configuration of the initial paging area of the terminal device.
  • the method of the embodiment of the invention can enable the terminal device to stay in the initial paging area as much as possible, thereby reducing the probability that the terminal device initiates the location update process, and the purpose of reducing the air interface signaling load is achieved.
  • determining the serving cell of the terminal device according to the configuration of the initial paging area of the terminal device including:
  • the terminal device is configured with the initial paging area, and the cell of at least one first cell in the initial paging area satisfies a cell selection criterion S criterion, the terminal device is in the at least one first cell. Determining the serving cell.
  • the terminal device can be residing in the initial paging area as much as possible, thereby reducing the probability that the terminal device initiates the location update process, thereby reducing the air interface.
  • the purpose of the signaling load is redefining the priority of the cell reselection criterion and the cell reselection.
  • the determining, by the terminal device, the serving cell in the at least one first cell includes:
  • the terminal device is configured according to the frequency priority information corresponding to each first cell and/or the cell quality information of each first cell, in the multiple The serving cell is determined in a cell.
  • determining the serving cell of the terminal device according to the configuration of the initial paging area of the terminal device including:
  • the terminal device determines the service in at least one second cell. a cell, wherein the initial paging area and the at least one second cell are free of weight Stack.
  • determining the serving cell of the terminal device according to the configuration of the initial paging area of the terminal device including:
  • the terminal device determines the serving cell in at least one third cell, where the at least one third cell is the terminal device The measured cell.
  • the method before the determining the serving cell of the terminal device, the method further includes:
  • the terminal device receives a system message or a network configuration message, where the system message or the network configuration information includes information for determining a serving cell of the terminal device.
  • the frequency priority of each cell in the initial paging area is higher than the frequency priority of the cell except the initial paging area.
  • the cell in which the terminal device resides in the initial paging area has the highest frequency priority.
  • the frequency priority of the cell can be defined, so that the terminal device resides in the initial paging area as much as possible, thereby reducing the probability that the terminal device initiates the location update process, thereby achieving a reduction.
  • the purpose of the air interface signaling load can be defined, so that the terminal device resides in the initial paging area as much as possible, thereby reducing the probability that the terminal device initiates the location update process, thereby achieving a reduction.
  • a second aspect provides a terminal device, where the connection between the terminal device and the network device is in a disconnected state, and the network device retains context information of the terminal device, where the context information is used to establish the terminal a connection between the device and the network device;
  • the terminal device includes:
  • a determining unit configured to determine a serving cell of the terminal device according to a configuration situation of an initial paging area of the terminal device, when the cell reselection operation is triggered.
  • a third aspect provides a terminal device, where the connection between the terminal device and the network device is in an disconnected state, and the network device retains context information of the terminal device, where the context information is used to establish the terminal. a connection between the device and the network device;
  • the terminal device includes:
  • the processor when used to trigger the cell reselection operation, determines the serving cell of the terminal device according to the configuration of the initial paging area of the terminal device.
  • a computer readable medium for storing a computer program comprising instructions for performing the method embodiment of the first aspect described above.
  • a fifth aspect provides a computer chip, including: an input interface, an output interface, at least one processor, and a memory, wherein the processor is configured to execute code in the memory, when the code is executed, the processing.
  • a communication system including the terminal device described above.
  • FIG. 2 is a schematic flowchart of a method for cell reselection according to an embodiment of the present invention.
  • FIG. 3 is a schematic block diagram of a terminal device according to an embodiment of the present invention.
  • FIG. 4 is another schematic block diagram of a terminal device according to an embodiment of the present invention.
  • FIG. 1 is a schematic diagram of a communication system in accordance with an embodiment of the present invention.
  • communication system 100 can include terminal device 110 and network device 120.
  • Network device 120 can communicate with terminal device 110 over an air interface.
  • Multi-service transmission is supported between the terminal device 110 and the network device 120.
  • the terminal device 110 may be in an RRC_INACTIVE state.
  • the RRC_INACTIVE state is different from the radio resource control idle (RRC_IDLE) state and the radio resource control activation (RRC_ACTIVE) state.
  • RRC_IDLE radio resource control idle
  • RRC_ACTIVE radio resource control activation
  • the network device does not store the terminal device context information.
  • the terminal device needs to be paged, paging is initiated by the core network, and the paging area is configured by the core network. Its mobility is cell selection based on terminal equipment or cell reselection.
  • the RRC_ACTIVE state there is an RRC connection between the terminal device and the network device, and the network device and the terminal device store the context information of the terminal device. The location of the terminal device acquired by the network device is at a specific cell level. Its mobility is the mobility controlled by the network device.
  • the RRC_INACTIVE state there is a connection between the core network (CN) and the network device, and the context information of the terminal device exists on a certain network device, and the paging is triggered by the Radio Access Network (RAN), and is managed by the RAN.
  • the paging area of the RAN that is, the location of the terminal device acquired by the network device is the paging area level of the RAN.
  • Its mobility is Cell selection based on terminal equipment or cell reselection.
  • the connection between the terminal device in the RRC_INACTIVE state and the network device is in a disconnected state, and the network device retains context information of the terminal device, and the context information is used to quickly establish a relationship between the terminal device and the network device. connection.
  • the network device configures the paging device with the paging area of the RAN, and the paging area of the RAN may include multiple cells.
  • the paging area of the RAN may be referred to as an initial paging area, or the paging area pre-configured by the network device as a terminal device may be the initial paging area. That is, when performing cell reselection, the terminal device may trigger the terminal device to resume the RRC connection based on the initial paging area.
  • the terminal device when the terminal device performs cell reselection, if the terminal device moves within the initial paging area, the network device is not notified, and more specifically, the terminal device may follow the mobility behavior under RRC_IDLE, that is, follow RRC_IDLE
  • the cell selection reselection principle is used for cell reselection. If the terminal device moves out of the initial paging area, the terminal device may be triggered to resume the RRC connection and re-acquire the paging area configured by the network device.
  • the target cell selection is simply performed according to the frequency priority and the cell measurement quality. It may cause the terminal device to frequently trigger the recovery of the RRC, which may cause the terminal device to frequently acquire the paging area reconfigured by the network device, and increase the air interface signaling load.
  • a method for reselecting a cell is provided in the embodiment of the present invention.
  • the cell reselection criterion and the priority of the cell reselection are redefined, so that the terminal device can reside in the initial paging area as much as possible, thereby lowering the terminal.
  • the probability that the device initiates the location update process achieves the goal of reducing the air interface signaling load.
  • embodiments of the present invention are applicable to any communication system including a terminal device in an RRC_INACTIVE state. That is, the embodiment of the present invention is exemplified only by the communication system 100, but the embodiment of the present invention is not limited thereto. That is, the technical solution of the embodiment of the present invention can be applied to various communication systems, such as a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, and a wideband code division. Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE time division duplex (Time Division) Duplex, TDD), Universal Mobile Telecommunication System (UMTS), and the like.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • TDD Universal Mobile Telecommunication System
  • UMTS Universal Mobile Telecommunication System
  • the present invention describes various embodiments in connection with network devices and terminal devices.
  • the network device 120 may refer to any entity on the network side that is used to send or receive signals. For example, it may be a device communication of a machine type communication (MTC), a base station (BTS) in GSM or CDMA, a base station (NodeB) in WCDMA, an evolved base station (Evolutional Node B, eNB or eNodeB in LTE). ), base station equipment in a 5G network, and the like.
  • MTC machine type communication
  • BTS base station
  • NodeB base station
  • Evolutional Node B eNB or eNodeB in LTE
  • 5G network and the like.
  • the terminal device 110 may be any terminal device.
  • the terminal device 110 can communicate with one or more core networks (Core Network) via a radio access network (RAN), and can also be referred to as an access terminal, a user equipment (User Equipment, UE), Subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device.
  • RAN radio access network
  • UE user equipment
  • Subscriber unit Subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device.
  • it can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), and a wireless communication function.
  • the serving cell of the terminal device is determined according to the configuration of the initial paging area of the terminal device.
  • connection between the terminal device and the network device is in a disconnected state, and the network device retains context information of the terminal device, where the context information is used to establish a connection between the terminal device and the network device;
  • the serving cell of the terminal device is determined according to the configuration of the initial paging area of the terminal device.
  • the terminal device in the embodiment of the present invention may determine the serving cell of the terminal device according to whether the terminal device is configured with an initial paging area. That is, when the terminal device is configured with the initial paging area, the serving cell of the terminal device may be determined in a manner. When the terminal device is not configured with the initial paging area, the serving cell of the terminal device may be determined in another manner.
  • the configuration of the initial paging area in the embodiment of the present invention may be whether the terminal device is configured with the initial paging area, or may be configured to configure the initial paging area for the terminal device. It may also be configured to configure configuration information of the initial paging area for the terminal device, for example, an initial paging area. The type of domain and so on.
  • the embodiment of the invention is not specifically limited.
  • the following describes a method for performing cell reselection on the terminal device by taking an example of the initial paging area configuration as an example of whether the terminal device is configured with the initial paging area.
  • the initial paging area has a cell that satisfies the terminal device camping.
  • the terminal device determines in the at least one first cell.
  • the service area if the terminal device is configured with the initial paging area, and the cell of the at least one first cell in the initial paging area meets a cell selection criterion S criterion, the terminal device determines in the at least one first cell.
  • the service area if the terminal device is configured with the initial paging area, and the cell of the at least one first cell in the initial paging area meets a cell selection criterion S criterion, the terminal device determines in the at least one first cell. The service area.
  • the terminal device determines the serving cell in the at least one first cell. :
  • Srxlev is a level value calculated in a cell selection/reselection process
  • Qrxlevmeas refers to a measured cell received signal level value, for example, a measured reference signal received power (RSRP)
  • RSRP measured reference signal received power
  • Qrxlevmin is The minimum reception level value required by the cell
  • Qrxlevminoffset only resides normally in a virtual public land mobile network (VPLMN), periodically searching for a high priority public land mobile network (Public Land Mobile) Network, PLMN) is effective when performing cell selection evaluation.
  • VPN virtual public land mobile network
  • PLMN Public Land Mobile Network
  • This parameter performs a certain offset value for Qrxlevmin; Pcompensation is max(P EMAX -P UMAX , 0), where P EMAX is when the terminal device accesses the cell, the system The maximum allowable transmit power is set; P UMAX is the maximum output power specified by the terminal device level.
  • the S-criteria in the 3GPP specification is one of the basis for determining whether a decision is a suitable cell. It will not be repeated here.
  • the terminal device may receive a system message or a network configuration message, the system message or the network configuration information, before determining the serving cell of the terminal device.
  • Information for determining a serving cell of the terminal device is included.
  • a system information block (SIB) is received, the SIB including information for determining a serving cell of the terminal device.
  • SIB system information block
  • the terminal device reads the SIB1 of the cell and acquires Qrxlevmeas, Qrxlevmin, and Qrxlevminoffset.
  • the embodiment of the present invention focuses on that, when the terminal device satisfies the camping condition in the initial paging area, the terminal device preferentially determines the serving cell in the at least one first cell.
  • the terminal device if the terminal device is configured with the initial paging area, and the cell of at least one first cell in the initial paging area satisfies the cell selection criterion S criterion, even if the initial paging area The priority of the cell is higher and the quality is better.
  • the terminal device also preferentially determines the serving cell of the terminal device in the at least one first cell.
  • the terminal device can be residing in the initial paging area as much as possible, thereby reducing the probability that the terminal device initiates the location update process, and the purpose of reducing the air interface signaling load is achieved.
  • the terminal device is configured according to the frequency priority information corresponding to each first cell and/or the cell quality information of each first cell.
  • the serving cell is determined in the first cell.
  • the terminal device may use the cell with the highest priority frequency among the plurality of first cells as the serving cell.
  • the terminal device may use the best quality cell among the plurality of first cells as the serving cell.
  • the terminal device determines the serving cell in the plurality of first cells by considering the frequency priority and the cell quality.
  • the terminal device may also determine the serving cell in the cell in the initial paging area by directly using the frequency priority information corresponding to each cell and/or the cell quality information of each cell.
  • the terminal device may further determine the serving cell in the plurality of first cells by using an R criterion.
  • the initial paging area has a cell that satisfies the terminal device camping.
  • the terminal device determines the serving cell in the at least one second cell. And wherein the initial paging area and the at least one second cell do not overlap.
  • the terminal device is configured with the initial paging area, and each of the initial paging areas does not meet the camping condition, the terminal device is in a cell outside the initial paging area.
  • the serving cell of the terminal device is determined.
  • the terminal device determines the serving cell in at least one third cell, where the at least one third cell is a cell measured by the terminal device. .
  • the terminal device determines the serving cell of the terminal device in the measured cell.
  • the implementation manner of the serving cell is determined according to the configuration of the initial paging area in combination with the terminal device. Further, in the embodiment of the present invention, a method for cell reselection is also proposed. By redefining the frequency priority of the cell, the terminal device can be parked in the initial paging area as much as possible, thereby reducing The probability that the terminal device initiates the location update process achieves the purpose of reducing the air interface signaling load.
  • the frequency priority of each cell used by the terminal device for cell reselection is obtained by using a system message or a network configuration message.
  • the frequency priority of the cell may be redefined by the terminal device or the user to achieve the purpose of causing the terminal device to reside as much as possible in the initial paging area.
  • the frequency priority for the cell is differentiated at the level of the paging area.
  • the detected cell may be divided into a cell in the initial paging area and a cell outside the initial paging area, and frequency priorities of the two cells are defined.
  • the frequency priority of each cell in the initial paging area is higher than the frequency priority of cells other than the initial paging area.
  • the frequency priority of the cell in the initial paging area can be obtained by using the prior art, and the frequency priority of the cell outside the initial paging area can also be obtained by using the prior art.
  • the frequency priority of a part or a certain cell may be redefined. Further, the frequency priority of the partial cell is obtained by the prior art.
  • the cell in which the terminal device resides in the initial paging area has the highest frequency priority. That is, if the current terminal device resides on one of the cells in the initial paging area, the terminal device considers that the frequency of the currently camped cell is the highest priority regardless of the frequency priority of the configuration on the network side.
  • FIG. 3 is a schematic block diagram of a terminal device 200 according to an embodiment of the present invention.
  • the terminal device 200 includes:
  • the determining unit 210 is configured to determine a serving cell of the terminal device according to a configuration situation of the initial paging area of the terminal device when the cell reselection operation is triggered.
  • the connection between the terminal device and the network device is in a disconnected state, and the network device retains context information of the terminal device, where the context information is used to establish a connection between the terminal device and the network device.
  • the determining unit 210 is specifically configured to:
  • the terminal device determines the serving cell in the at least one first cell.
  • the determining unit 210 is more specifically configured to:
  • the terminal device is in the plurality of first cells according to frequency priority information corresponding to each first cell and/or cell quality information of each first cell. Determine the serving cell.
  • the determining unit 210 is specifically configured to:
  • the terminal device determines the serving cell in at least one second cell, where The initial paging area and the at least one second cell do not overlap.
  • the determining unit 210 is specifically configured to:
  • the terminal device determines the serving cell in at least one third cell, where the at least one third cell is a cell measured by the terminal device.
  • the terminal device further includes:
  • the receiving unit 220 is configured to receive a system message or a network configuration message, where the system message or the network configuration information includes information for determining a serving cell of the terminal device, before determining the serving cell of the terminal device.
  • the frequency priority of each cell in the initial paging area is higher than the frequency priority of the cell except the initial paging area.
  • the cell in which the terminal device resides in the initial paging area has the highest frequency priority.
  • the determining unit 210 may be implemented by a processor, and the receiving unit 220 may be Transceiver implementation.
  • the terminal device 300 may include a processor 310, a transceiver 320, and a memory 330.
  • the memory 330 can be used to store indication information, and can also be used to store code, instructions, and the like executed by the processor 310.
  • the various components in the terminal device 300 are connected by a bus system, wherein the bus system includes a power bus, a control bus, and a status signal bus in addition to the data bus.
  • the terminal device 300 shown in FIG. 4 can implement the various processes implemented by the terminal device in the foregoing method embodiments. To avoid repetition, details are not described herein again. That is to say, the method embodiment in the embodiment of the present invention may be applied to a processor or implemented by a processor.
  • each step of the method embodiment in the embodiment of the present invention may be completed by using an integrated logic circuit of hardware in the processor or an instruction in a software form. More specifically, the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software modules can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.
  • the processor may be an integrated circuit chip with signal processing capability, and the methods, steps, and logic blocks disclosed in the embodiments of the present invention may be implemented or executed.
  • the above processor may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or Other programmable logic devices, transistor logic devices, discrete hardware components, and the like.
  • the general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the memory may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (ROMM), an erasable programmable read only memory (erasable PROM, EPROM), or an electrical Erase programmable EPROM (EEPROM) or flash memory.
  • the volatile memory can be a random access memory (RAM) that acts as an external cache.
  • the memory in the embodiment of the present invention may also be a static random access memory (SRAM), a dynamic random access memory (DRAM), or a dynamic random access memory (DRAM).
  • Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous DRAM (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronously connected dynamic random access memory (synch link) DRAM, SLDRAM) and Direct Memory Bus (DR RAM) and so on. That is, the memories of the systems and methods described herein are intended to comprise, without being limited to, these and any other suitable types of memory.
  • first cell and second cell may be employed in embodiments of the invention, but such cells are not limited to these terms. These terms are only used to distinguish types of cell groups from one another.
  • the words “at time” as used herein may be interpreted as “if” or “if” or “when” or “response” Determine “or” in response to the test.
  • the phrase “if determined” or “if detected (conditions or events stated)” can be interpreted as “when determined” or “in response to determination” or “when detected (stated condition or event) "Time” or “in response to a test (condition or event stated)”.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the unit is only a logical function division.
  • multiple units or components may be combined. Or it can be integrated into another system, or some features can be ignored or not executed.
  • Another point that is shown or discussed between each other The coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
  • each functional unit in the embodiment of the present invention 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 technical solution of the embodiments of the present invention may be embodied in the form of a software product stored in a 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.) to perform all or part of the steps of the method of the embodiments of the present invention.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory, a random access memory, a magnetic disk, or an optical disk.

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Abstract

提供了一种小区重选的方法和终端设备。该方法应用于终端设备,该终端设备与网络设备的连接处于断开状态,且该网络设备保留有该终端设备的上下文信息,该上下文信息用于建立该终端设备和该网络设备之间的连接;该方法包括:该终端设备触发小区重选操作时,根据该终端设备的初始寻呼区域的配置情况,确定该终端设备的服务小区。本发明实施例的方法,能够使得该终端设备能够尽可能驻留在初始寻呼区域内,进而降低该终端设备发起位置更新流程的概率,达到降低空口信令负荷的目的。

Description

小区重选的方法和终端设备 技术领域
本发明实施例涉及通信领域,并且更具体地,涉及小区重选的方法和终端设备。
背景技术
随着人们对速率、延迟、高速移动性、能效的追求以及未来生活中业务的多样性、复杂性。为此,第三代合作伙伴计划(The 3rd Generation Partnership Project,3GPP)国际标准组织开始研发第五代移动通信技术(5-Generation,5G)。5G的主要应用场景为:增强移动超宽带(Enhance Mobile Broadband,eMBB)、低时延高可靠通信(Ultra-Reliable and Low Latency Communication,URLLC)、大规模机器类通信(massive machine type of communication,mMTC)。其中,eMBB以用户获得多媒体内容、服务和数据为目标。此外,由于eMBB可能部署在不同的场景中,其能力和需求的差别也比较大。例如,室内,市区,农村等。URLLC的典型应用包括:工业自动化,电力自动化,远程医疗操作(手术),交通安全保障等。mMTC的典型特点包括:高连接密度,小数据量,时延不敏感业务,模块的低成本和长使用寿命等。
5G网络环境中为了降低空口信令和快速恢复无线连接,快速恢复数据业务的目的,定义了一个新的无线资源控制(Radio Resource Control,RRC)状态,即无线资源控制非激活(RRC_INACTIVE)状态。
然而,当用户设备(User Equipment,UE)处于RRC_INACTIVE状态时,网络侧为该UE配置无线接入网(Radio Access Network,RAN)的寻呼区域,当UE在该寻呼区域内移动时不用通知网络侧,遵循RRC_IDLE下的移动性行为,即,小区选择重选原则。当UE移动出该寻呼区域时,会触发UE恢复RRC连接并重新获取网络侧配置的寻呼区域。
由于,RRC_INACTIVE状态的UE在移动过程中按照小区重选的方式重新选择小区进行驻留。而现有技术中小区重选按照频率优先级和小区测量质量进行目标小区的选择。如果处于RRC_INACTIVE状态的UE继续沿用现有技术的小区选择准则,有可能导致UE频繁发起位置更新流程,进而增加了空口信令负荷。
发明内容
提供了一种小区重选的方法和终端设备,能够有效降低UE发起位置更新流程的概率,进而降低空口信令负荷。
第一方面,提供了一种小区重选的方法,所述方法应用于终端设备,所述终端设备与网络设备的连接处于断开状态,且所述网络设备保留有所述终端设备的上下文信息,所述上下文信息用于建立所述终端设备和所述网络设备之间的连接;所述方法包括:
所述终端设备触发小区重选操作时,根据所述终端设备的初始寻呼区域的配置情况,确定所述终端设备的服务小区。
本发明实施例的方法,能够使得该终端设备能够尽可能驻留在初始寻呼区域内,进而降低该终端设备发起位置更新流程的概率,达到降低空口信令负荷的目的。
在一些可能的实现方式中,所述根据所述终端设备的初始寻呼区域的配置情况,确定所述终端设备的服务小区,包括:
若所述终端设备配置有所述初始寻呼区域,且所述初始寻呼区域中的至少一个第一小区的小区满足小区选择准则S准则,所述终端设备在所述至少一个第一小区中确定所述服务小区。
由此,通过重新定义小区重选准则和小区重选的优先级,能够使得该终端设备能够尽可能驻留在初始寻呼区域内,进而降低该终端设备发起位置更新流程的概率,达到降低空口信令负荷的目的。
在一些可能的实现方式中,所述终端设备在所述至少一个第一小区中确定所述服务小区,包括:
若所述至少一个第一小区为多个第一小区,所述终端设备根据每个第一小区对应的频率优先级信息和/或每个第一小区的小区质量信息,在所述多个第一小区中确定所述服务小区。
在一些可能的实现方式中,所述根据所述终端设备的初始寻呼区域的配置情况,确定所述终端设备的服务小区,包括:
若所述终端设备配置有所述初始寻呼区域,且所述初始寻呼区域中的每个小区均不满足小区选择准则S准则,所述终端设备在至少一个第二小区中确定所述服务小区,其中,所述初始寻呼区域和所述至少一个第二小区无重 叠。
在一些可能的实现方式中,所述根据所述终端设备的初始寻呼区域的配置情况,确定所述终端设备的服务小区,包括:
若所述网络设备没有为所述终端设备配置所述初始寻呼区域,所述终端设备在至少一个第三小区中确定所述服务小区,其中,所述至少一个第三小区为所述终端设备测量的小区。
在一些可能的实现方式中,所述确定所述终端设备的服务小区之前,所述方法还包括:
所述终端设备接收系统消息或者网络配置消息,所述系统消息或者所述网络配置信息包括用于确定所述终端设备的服务小区的信息。
在一些可能的实现方式中,所述初始寻呼区域内每个小区的频率优先级均高于除所述初始寻呼区域之外的小区的频率优先级。
在一些可能的实现方式中,所述初始寻呼区域内所述终端设备驻留的小区对应的频率优先级最高。
也就是说,本发明实施例中可以通过对小区的频率优先级的定义,使得该终端设备尽可能地驻留在初始寻呼区域内,进而降低该终端设备发起位置更新流程的概率,达到降低空口信令负荷的目的。
第二方面,提供了一种终端设备,所述终端设备与网络设备的连接处于断开状态,且所述网络设备保留有所述终端设备的上下文信息,所述上下文信息用于建立所述终端设备和所述网络设备之间的连接;
所述终端设备包括:
确定单元,用于触发小区重选操作时,根据所述终端设备的初始寻呼区域的配置情况,确定所述终端设备的服务小区。
第三方面,提供了一种终端设备,所述终端设备与网络设备的连接处于断开状态,且所述网络设备保留有所述终端设备的上下文信息,所述上下文信息用于建立所述终端设备和所述网络设备之间的连接;
所述终端设备包括:
处理器,用于触发小区重选操作时,根据所述终端设备的初始寻呼区域的配置情况,确定所述终端设备的服务小区。
第四方面,提供了一种计算机可读介质,用于存储计算机程序,该计算机程序包括用于执行上述第一方面的方法实施例的指令。
第五方面,提供了一种计算机芯片,包括:输入接口、输出接口、至少一个处理器、存储器,所述处理器用于执行所述存储器中的代码,当所述代码被执行时,所述处理器可以实现上述第一方面及各种实现方式中的小区重选的方法中由终端设备执行的各个过程。
第六方面,提供了一种通信系统,包括前述所述的终端设备。
附图说明
图1是本发明实施例的通信系统的示例。
图2是本发明实施例的小区重选的方法的示意性流程图。
图3是本发明实施例的终端设备的示意性框图。
图4是本发明实施例的终端设备的另一示意性框图。
具体实施方式
图1是本发明实施例的通信系统的示意图。
如图1所示,通信系统100可以包括终端设备110和网络设备120。网络设备120可以通过空口与终端设备110通信。终端设备110和网络设备120之间支持多业务传输。其中,终端设备110可以处于RRC_INACTIVE状态。
其中,RRC_INACTIVE状态是有别于无线资源控制空闲(RRC_IDLE)状态和无线资源控制激活(RRC_ACTIVE)状态。为便于方案的理解,下面对处于RRC_INACTIVE状态的终端设备进行一个简单介绍。
具体而言,针对RRC_IDLE状态,终端设备和网络设备之间不存在RRC连接,网络设备也不存储终端设备上下文信息。在需要寻呼该终端设备时,由核心网络发起寻呼,由核心网络配置寻呼区域。其移动性为基于终端设备的小区选择或者小区重选。针对RRC_ACTIVE状态,终端设备和网络设备之间存在RRC连接,网络设备和终端设备存储有该终端设备的上下文信息。网络设备获取的终端设备的位置是具体小区级别的。其移动性是由网络设备进行控制的移动性。
然而,针对RRC_INACTIVE状态,核心网络(CN)与网络设备之间存在连接,终端设备的上下文信息存在某个网络设备上,由无线接入网(Radio Access Network,RAN)触发寻呼,由RAN管理RAN的寻呼区域,也就是说,网络设备获取的终端设备位置是RAN的寻呼区域级别的。其移动性为 基于终端设备的小区选择或者小区重选。换句话说,处于RRC_INACTIVE状态的终端设备与网络设备的连接处于断开状态,且该网络设备保留有该终端设备的上下文信息,该上下文信息用于快速建立该终端设备和该网络设备之间的连接。
例如,假设终端设备处于RRC_INACTIVE状态时,网络设备为该终端设备配置有RAN的寻呼区域,该RAN的寻呼区域可以包括多个小区。为便于描述,本发明实施例中,可选地,可以将该RAN的寻呼区域称为初始寻呼区域,也可以将网络设备为终端设备预配置的寻呼区域成为该初始寻呼区域。也就是说,该终端设备在进行小区重选时,可以基于该初始寻呼区域触发终端设备进行恢复RRC连接。
具体地,在该终端设备进行小区重选时,若终端设备在该初始寻呼区域内移动则不通知网络设备,更具体地,该终端设备可以遵循RRC_IDLE下的移动性行为,即,遵循RRC_IDLE下的小区选择重选原则进行小区重选。若终端设备移动出该初始寻呼区域,可以触发终端设备恢复RRC连接并重新获取网络设备配置的寻呼区域。
但是,如果该终端设备在进行小区重选时,如果单纯的按照频率优先级和小区测量质量进行目标小区的选择。有可能导致频繁地触发终端设备恢复RRC,进而有可能导致该终端设备频繁地获取网络设备重新配置的寻呼区域,增加了空口信令负荷。
本发明实施例中提供了一种小区重选的方法,通过重新定义小区重选准则和小区重选的优先级,使得该终端设备能够尽可能驻留在初始寻呼区域内,进而降低该终端设备发起位置更新流程的概率,达到降低空口信令负荷的目的。
应理解,本发明实施例可以适用于任何包括处于RRC_INACTIVE状态的终端设备的通信系统。也就是说,本发明实施例仅以通信系统100进行示例性说明,但本发明实施例不限定于此。即,本发明实施例的技术方案可以应用于各种通信系统,例如:全球移动通讯(Global System of Mobile communication,GSM)系统、码分多址(Code Division Multiple Access,CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)系统、通用分组无线业务(General Packet Radio Service,GPRS)、长期演进(Long Term Evolution,LTE)系统、LTE时分双工(Time Division  Duplex,TDD)、通用移动通信系统(Universal Mobile Telecommunication System,UMTS)等。
本发明结合网络设备和终端设备描述了各个实施例。
其中,网络设备120可以指网络侧的任一种用来发送或接收信号的实体。例如,可以是机器类通信(MTC)的用户设备、GSM或CDMA中的基站(Base Transceiver Station,BTS)、WCDMA中的基站(NodeB)、LTE中的演进型基站(Evolutional Node B,eNB或eNodeB)、5G网络中的基站设备等。
此外,终端设备110可以是任意终端设备。具体地,终端设备110可以经无线接入网(Radio Access Network,RAN)与一个或多个核心网(Core Network)进行通信,也可称为接入终端、用户设备(User Equipment,UE)、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。例如,可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol,SIP)电话、无线本地环路(Wireless Local Loop,WLL)站、个人数字处理(Personal Digital Assistant,PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备以及5G网络中的终端设备等。
下面对本发明实施例的小区重选的方法的实现方式进行具体说明。
可选地,如图2所示,终端设备触发小区重选操作时,根据该终端设备的初始寻呼区域的配置情况,确定该终端设备的服务小区。
具体而言,该终端设备与网络设备的连接处于断开状态,且该网络设备保留有该终端设备的上下文信息,该上下文信息用于建立该终端设备和该网络设备之间的连接;该终端设备触发小区重选操作时,根据该终端设备的初始寻呼区域的配置情况,确定该终端设备的服务小区。
换种说法,本发明实施例中的终端设备可以根据终端设备是否配置有初始寻呼区域,分情况确定该终端设备的服务小区。即,该终端设备配置有初始寻呼区域时,可以按照一种方式确定该终端设备的服务小区。该终端设备没有被配置初始寻呼区域时,可以按照另一种方式确定该终端设备的服务小区。应理解,本发明实施例中的初始寻呼区域的配置情况可以是终端设备是否被配置初始寻呼区域,也可以是为终端设备配置初始寻呼区域的配置方式。还可以是为终端设备配置初始寻呼区域的配置信息,例如,初始寻呼区 域的类型等等。本发明实施例不做具体限定。
下面以初始寻呼区域的配置情况为终端设备是否被配置初始寻呼区域的情况为例,对该终端设备进行小区重选的方法进行说明。
针对该终端设备配置有该初始寻呼区域的场景:
作为一个实施例,该初始寻呼区域存在满足该终端设备驻留的小区。
可选地,若该终端设备配置有该初始寻呼区域,且该初始寻呼区域中的至少一个第一小区的小区满足小区选择准则S准则,该终端设备在上述至少一个第一小区中确定该服务小区。
具体而言,该终端设备配置有该初始寻呼区域,且该初始寻呼区域中的至少一个第一小区的小区满足以下条件时,该终端设备在上述至少一个第一小区中确定该服务小区:
Srxlev>0       (1)
Srxlev=Qrxlevmeas-(Qrxlevmin+Qrxlevminoffset)-Pcompensation
                                          (2)
其中,Srxlev为小区选择/重选过程中计算得到的电平值;Qrxlevmeas指测量得到的小区接收信号电平值,例如,测量到的参考信号接收功率(Reference Signal Receiving Power,RSRP);Qrxlevmin为该小区需要的最小接收电平值;Qrxlevminoffset只有正常驻留在一个虚拟公共陆上移动网(Virtual Public Land Mobile Network,VPLMN),周期性搜索一个高优先级的公共陆上移动网(Public Land Mobile Network,PLMN)进行小区选择评估时才有效,该参数对Qrxlevmin进行一定的偏置值;Pcompensation为max(PEMAX-PUMAX,0),其中PEMAX为终端设备在接入该小区时,系统设定的最大允许发送功率;PUMAX是指根据终端设备等级规定的最大输出功率。
3GPP规范中把S准则作为判决是否是合适小区的依据之一。此处不再进行赘述。
可选地,为了使得该终端设备获取上述的用于确定服务小区的信息,该终端设备可以在确定该终端设备的服务小区之前,接收系统消息或者网络配置消息,该系统消息或者该网络配置信息包括用于确定该终端设备的服务小区的信息。例如,接收系统消息块(System Information Block,SIB),该SIB包括用于确定该终端设备的服务小区的信息。例如,在选择的PLMN中,该终端设备读取小区的SIB1,获取Qrxlevmeas、Qrxlevmin和Qrxlevminoffset。
应理解,上述S准则仅为本发明实施例的示例性描述,本发明实施例不限于此。即,本发明实施例侧重点在于,终端设备在初始寻呼区域中存在至少一个第一小区满足驻留条件时,该终端设备优先在上述至少一个第一小区中确定该服务小区。
也就是说,本发明实施例中,若该终端设备配置有该初始寻呼区域,且该初始寻呼区域中的至少一个第一小区的小区满足小区选择准则S准则,即使该初始寻呼区域之外的小区的优先级再高,质量再好,该终端设备还是优先在上述至少一个第一小区中确定该终端设备的服务小区。
由此,能够使得该终端设备能够尽可能驻留在初始寻呼区域内,进而降低该终端设备发起位置更新流程的概率,达到降低空口信令负荷的目的。
可选地,若上述至少一个第一小区为多个第一小区,该终端设备根据每个第一小区对应的频率优先级信息和/或每个第一小区的小区质量信息,在该多个第一小区中确定该服务小区。
例如,该终端设备可以将该多个第一小区中最高优先级频率的小区作为该服务小区。
又例如,该终端设备可以将该多个第一小区中质量最好的小区作为该服务小区。
又例如,该终端设备综合考虑频率优先级和小区质量,在该多个第一小区中确定该服务小区。
应理解,上面提及的实现方式仅为本发明实施例的小区重选的方法的示例性说明,本发明实施例不限于此。
例如,终端设备还可以直接通过每个小区对应的频率优先级信息和/或每个小区的小区质量信息,在该初始寻呼区域中的小区中确定该服务小区。
又例如,该终端设备还可以通过R准则,在该多个第一小区中确定该服务小区。
作为另一个实施例,该初始寻呼区域存在满足该终端设备驻留的小区。
可选地,若该终端设备配置有该初始寻呼区域,且该初始寻呼区域中的每个小区均不满足小区选择准则S准则,该终端设备在至少一个第二小区中确定该服务小区,其中,该初始寻呼区域和上述至少一个第二小区无重叠。
具体而言,若该终端设备配置有该初始寻呼区域,且该初始寻呼区域中的每个小区均不满足驻留条件时,该终端设备在该初始寻呼区域之外的小区 中确定该终端设备的服务小区。
针对该终端设备没有被配置该初始寻呼区域的场景:
可选地,若该网络设备没有为该终端设备配置该初始寻呼区域,该终端设备在至少一个第三小区中确定该服务小区,其中,上述至少一个第三小区为该终端设备测量的小区。
具体而言,若该网络设备没有为该终端设备配置该初始寻呼区域,该终端设备在测量到的小区中确定该终端设备的服务小区。
结合终端设备根据初始寻呼区域的配置情况确定服务小区的实现方式。进一步地,本发明实施例中还提出了一种小区重选的方法,通过对小区的频率优先级的进行重新定义,能够使得该终端设备尽可能地驻留在初始寻呼区域内,进而降低该终端设备发起位置更新流程的概率,达到降低空口信令负荷的目的。
具体而言,现有技术中,终端设备用于小区重选的各个小区的频率优先级是通过系统消息或者网络配置消息获取。本发明实施例中,可以由终端设备或者用户对小区的频率优先级进行重新定义,以达到使得该终端设备尽可能地驻留在初始寻呼区域内的目的。
可选地,针对小区的频率优先级在寻呼区域的层次上进行区分。具体地,可以将检测的小区划分为该初始寻呼区域内的小区和该初始寻呼区域外的小区,并对这两种小区的频率优先级进行定义。
例如,该初始寻呼区域内每个小区的频率优先级均高于除该初始寻呼区域之外的小区的频率优先级。进一步地,该初始寻呼区域内的小区的频率优先级可以通过现有技术获取,该初始寻呼区域之外的小区的频率优先级也可以通过现有技术获取。
应理解,在寻呼区域层次上对小区的频率优先级进行区分仅仅为示例性描述,本发明实施例不限于此。
例如,也可以针对部分或者某一个小区的频率优先级进行重新定义,进一步地,部分小区的频率优先级通过现有技术获取。
作为示例而非限定性地,该初始寻呼区域内该终端设备驻留的小区对应的频率优先级最高。也就是说,如果当前终端设备驻留在初始寻呼区域中的一个小区上,则终端设备认为当前驻留小区的频点为最高优先级,不管网络侧的配置的频率优先级如何。
图3是本发明实施例的终端设备200的示意性框图。
如图3所示,该终端设备200包括:
确定单元210,用于触发小区重选操作时,根据该终端设备的初始寻呼区域的配置情况,确定该终端设备的服务小区。其中,该终端设备与网络设备的连接处于断开状态,且该网络设备保留有该终端设备的上下文信息,该上下文信息用于建立该终端设备和该网络设备之间的连接。
可选地,确定单元210具体用于:
若该终端设备配置有该初始寻呼区域,且该初始寻呼区域中的至少一个第一小区的小区满足小区选择准则S准则,该终端设备在上述至少一个第一小区中确定该服务小区。
可选地,确定单元210更具体用于:
若上述至少一个第一小区为多个第一小区,该终端设备根据每个第一小区对应的频率优先级信息和/或每个第一小区的小区质量信息,在该多个第一小区中确定该服务小区。
可选地,确定单元210具体用于:
若该终端设备配置有该初始寻呼区域,且该初始寻呼区域中的每个小区均不满足小区选择准则S准则,该终端设备在至少一个第二小区中确定该服务小区,其中,该初始寻呼区域和上述至少一个第二小区无重叠。
可选地,确定单元210具体用于:
若该网络设备没有为该终端设备配置该初始寻呼区域,该终端设备在至少一个第三小区中确定该服务小区,其中,上述至少一个第三小区为该终端设备测量的小区。
可选地,该终端设备还包括:
接收单元220,用于在确定该终端设备的服务小区之前,接收系统消息或者网络配置消息,该系统消息或者该网络配置信息包括用于确定该终端设备的服务小区的信息。
可选地,该初始寻呼区域内每个小区的频率优先级均高于除该初始寻呼区域之外的小区的频率优先级。
可选地,该初始寻呼区域内该终端设备驻留的小区对应的频率优先级最高。
本发明实施例中,确定单元210可以由处理器实现,接收单元220可由 收发器实现。如图4所示,终端设备300可以包括处理器310、收发器320和存储器330。其中,存储器330可以用于存储指示信息,还可以用于存储处理器310执行的代码、指令等。终端设备300中的各个组件通过总线系统相连,其中,总线系统除包括数据总线之外,还包括电源总线、控制总线和状态信号总线。
图4所示的终端设备300能够实现前述方法实施例中由终端设备所实现的各个过程,为避免重复,这里不再赘述。也就是说,本发明实施例中的方法实施例可以应用于处理器中,或者由处理器实现。
具体地,在实现过程中,本发明实施例中的方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。更具体地,结合本发明实施例公开的方法的步骤可以直接体现为硬件译码处理器执行完成,或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域的成熟的存储介质中。该存储介质位于存储器,处理器读取存储器中的信息,结合其硬件完成上述方法的步骤。
其中,处理器可能是一种集成电路芯片,具有信号的处理能力,可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。例如,上述的处理器可以是通用处理器、数字信号处理器(digital signal processor,DSP)、专用集成电路(application specific integrated circuit,ASIC)、现成可编程门阵列(field programmable gate array,FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、分立硬件组件等等。此外,通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
此外,本发明实施例中,存储器可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(read-only memory,ROM)、可编程只读存储器(programmable ROM,PROM)、可擦除可编程只读存储器(erasable PROM,EPROM)、电可擦除可编程只读存储器(electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory,RAM),其用作外部高速缓存。应理解,上述存储器为示例性但不是限制性说明,例如,本发明实施例中的存储器还可以是静态随机存取存储器(static RAM,SRAM)、动态随机存取存储器(dynamic RAM,DRAM)、同步动态随机存取存储器(synchronous  DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(synch link DRAM,SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM,DR RAM)等等。也就是说,本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
最后,需要注意的是,在本发明实施例和所附权利要求书中使用的术语是仅仅出于描述特定实施例的目的,而非旨在限制本发明实施例。
例如,在本发明实施例和所附权利要求书中所使用的单数形式的“一种”、“上述”和“该”也旨在包括多数形式,除非上下文清楚地表示其他含义。
又例如,在本发明实施例中可能采用术语第一小区和第二小区,但这些小区不应限于这些术语。这些术语仅用来将类型小区组彼此区分开。
又例如,取决于语境,如在此所使用的词语“在......时”可以被解释成为“如果”或“若”或“当......时”或“响应于确定”或“响应于检测”。类似地,取决于语境,短语“如果确定”或“如果检测(陈述的条件或事件)”可以被解释成为“当确定时”或“响应于确定”或“当检测(陈述的条件或事件)时”或“响应于检测(陈述的条件或事件)”。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本发明实施例的范围。
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,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,在此不再赘述。
在本申请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是示意性的,例如,所述单元的划分,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发明实施例的目的。
另外,在本发明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。
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,本发明实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本发明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、随机存取存储器、磁碟或者光盘等各种可以存储程序代码的介质。
以上内容,仅为本发明实施例的具体实施方式,但本发明实施例的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明实施例揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本发明实施例的保护范围之内。因此,本发明实施例的保护范围应以权利要求的保护范围为准。

Claims (16)

  1. 一种小区重选的方法,其特征在于,应用于终端设备,所述终端设备与网络设备的连接处于断开状态,且所述网络设备保留有所述终端设备的上下文信息,所述上下文信息用于建立所述终端设备和所述网络设备之间的连接;
    所述方法包括:
    所述终端设备触发小区重选操作时,根据所述终端设备的初始寻呼区域的配置情况,确定所述终端设备的服务小区。
  2. 根据权利要求1所述的方法,其特征在于,所述根据所述终端设备的初始寻呼区域的配置情况,确定所述终端设备的服务小区,包括:
    若所述终端设备配置有所述初始寻呼区域,且所述初始寻呼区域中的至少一个第一小区的小区满足小区选择准则S准则,所述终端设备在所述至少一个第一小区中确定所述服务小区。
  3. 根据权利要求2所述的方法,其特征在于,所述终端设备在所述至少一个第一小区中确定所述服务小区,包括:
    若所述至少一个第一小区为多个第一小区,所述终端设备根据每个第一小区对应的频率优先级信息和/或每个第一小区的小区质量信息,在所述多个第一小区中确定所述服务小区。
  4. 根据权利要求1所述的方法,其特征在于,所述根据所述终端设备的初始寻呼区域的配置情况,确定所述终端设备的服务小区,包括:
    若所述终端设备配置有所述初始寻呼区域,且所述初始寻呼区域中的每个小区均不满足小区选择准则S准则,所述终端设备在至少一个第二小区中确定所述服务小区,其中,所述初始寻呼区域和所述至少一个第二小区无重叠。
  5. 根据权利要求1所述的方法,其特征在于,所述根据所述终端设备的初始寻呼区域的配置情况,确定所述终端设备的服务小区,包括:
    若所述网络设备没有为所述终端设备配置所述初始寻呼区域,所述终端设备在至少一个第三小区中确定所述服务小区,其中,所述至少一个第三小区为所述终端设备测量的小区。
  6. 根据权利要求1至5中任一项所述的方法,其特征在于,所述确定所 述终端设备的服务小区之前,所述方法还包括:
    所述终端设备接收系统消息或者网络配置消息,所述系统消息或者所述网络配置信息包括用于确定所述终端设备的服务小区的信息。
  7. 根据权利要求1至6中任一项所述的方法,其特征在于,
    所述初始寻呼区域内每个小区的频率优先级均高于除所述初始寻呼区域之外的小区的频率优先级。
  8. 根据权利要求1至7中任一项所述的方法,其特征在于,
    所述初始寻呼区域内所述终端设备驻留的小区对应的频率优先级最高。
  9. 一种终端设备,其特征在于,所述终端设备与网络设备的连接处于断开状态,且所述网络设备保留有所述终端设备的上下文信息,所述上下文信息用于建立所述终端设备和所述网络设备之间的连接;
    所述终端设备包括:
    确定单元,用于触发小区重选操作时,根据所述终端设备的初始寻呼区域的配置情况,确定所述终端设备的服务小区。
  10. 根据权利要求9所述的终端设备,其特征在于,所述确定单元具体用于:
    若所述终端设备配置有所述初始寻呼区域,且所述初始寻呼区域中的至少一个第一小区的小区满足小区选择准则S准则,所述终端设备在所述至少一个第一小区中确定所述服务小区。
  11. 根据权利要求10所述的终端设备,其特征在于,所述确定单元更具体用于:
    若所述至少一个第一小区为多个第一小区,所述终端设备根据每个第一小区对应的频率优先级信息和/或每个第一小区的小区质量信息,在所述多个第一小区中确定所述服务小区。
  12. 根据权利要求9所述的终端设备,其特征在于,所述确定单元具体用于:
    若所述终端设备配置有所述初始寻呼区域,且所述初始寻呼区域中的每个小区均不满足小区选择准则S准则,所述终端设备在至少一个第二小区中确定所述服务小区,其中,所述初始寻呼区域和所述至少一个第二小区无重叠。
  13. 根据权利要求9所述的终端设备,其特征在于,所述确定单元具体 用于:
    若所述网络设备没有为所述终端设备配置所述初始寻呼区域,所述终端设备在至少一个第三小区中确定所述服务小区,其中,所述至少一个第三小区为所述终端设备测量的小区。
  14. 根据权利要求9至13中任一项所述的终端设备,其特征在于,所述终端设备还包括:
    接收单元,用于在确定所述终端设备的服务小区之前,接收系统消息或者网络配置消息,所述系统消息或者所述网络配置信息包括用于确定所述终端设备的服务小区的信息。
  15. 根据权利要求9至14中任一项所述的终端设备,其特征在于,
    所述初始寻呼区域内每个小区的频率优先级均高于除所述初始寻呼区域之外的小区的频率优先级。
  16. 根据权利要求9至15中任一项所述的终端设备,其特征在于,
    所述初始寻呼区域内所述终端设备驻留的小区对应的频率优先级最高。
PCT/CN2017/098618 2017-08-23 2017-08-23 小区重选的方法和终端设备 WO2019036933A1 (zh)

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