CN110741686B - Cell search method and device, and terminal - Google Patents

Cell search method and device, and terminal Download PDF

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Publication number
CN110741686B
CN110741686B CN201880036988.3A CN201880036988A CN110741686B CN 110741686 B CN110741686 B CN 110741686B CN 201880036988 A CN201880036988 A CN 201880036988A CN 110741686 B CN110741686 B CN 110741686B
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cell
terminal
power level
target cell
search
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CN201880036988.3A
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CN110741686A (en
Inventor
王淑坤
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Priority to PCT/CN2018/099227 priority Critical patent/WO2020029086A1/en
Publication of CN110741686A publication Critical patent/CN110741686A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/16Discovering, processing access restriction or access information

Abstract

The embodiment of the application provides a cell search method, a cell search device and a cell search terminal, and the cell search method comprises the following steps: a terminal receives first indication information sent by network equipment, wherein the first indication information is used for indicating whether the terminal can use a second power level in a current service cell; and if the first indication information indicates that the terminal can use the second power level in the current serving cell, the terminal preferentially adopts a first power level to search a target cell, wherein the first power level is smaller than the second power level.

Description

Cell search method and device, and terminal
Technical Field
The embodiment of the application relates to the technical field of mobile communication, in particular to a cell search method, a cell search device and a terminal.
Background
To meet the requirements of people on speed, delay, high-speed mobility, energy efficiency, and diversity and complexity of services in future life, the international standards organization of the third Generation Partnership Project (3 GPP) began to develop the fifth Generation (5G, 5G)thGeneration) mobile communication technology.
An air interface part of the 5G mobile communication technology is called a New air interface (NR), and when NR is deployed in an early stage, complete NR coverage is difficult to achieve, so typical network coverage is a combination of Long Term Evolution (LTE) coverage and NR coverage. Furthermore, to protect the early LTE investment of mobile operators, a tightly coupled (light interworking) mode of operation between LTE and NR is proposed. Of course, NR cells may also be deployed independently.
In NR, the power level of User Equipment (UE) is generally 23dBm by default, and a high power level of 26dBm is proposed in order to enable good uplink coverage at the edge of a cell or in an environment with poor channel conditions. The high power level UE can improve uplink coverage, but also brings the problems of power consumption of the UE and uplink interference of the network.
Disclosure of Invention
The embodiment of the application provides a cell search method, a cell search device and a terminal.
The cell search method provided by the embodiment of the application comprises the following steps:
a terminal receives first indication information sent by network equipment, wherein the first indication information is used for indicating whether the terminal can use a second power level in a current service cell;
and if the first indication information indicates that the terminal can use the second power level in the current serving cell, the terminal preferentially adopts a first power level to search a target cell, wherein the first power level is smaller than the second power level.
The cell search method provided by the embodiment of the application comprises the following steps:
the terminal searches a first type cell by adopting a first power level or a second power level, the frequency priority of the first type cell is greater than that of a current service cell, and the first power level is less than the second power level.
The cell search device provided in the embodiment of the present application includes:
a receiving unit, configured to receive first indication information sent by a network device, where the first indication information is used to indicate whether the terminal can use a second power class in a current serving cell;
a searching unit, configured to preferentially search for a target cell by using a first power class if the first indication information indicates that the terminal can use the second power class in a current serving cell, where the first power class is smaller than the second power class.
The cell search device provided in the embodiment of the present application includes:
the search unit is configured to search a first class cell by using a first power class or a second power class, where a frequency priority of the first class cell is greater than a frequency priority of a current serving cell, and the first power class is smaller than the second power class.
The terminal provided by the embodiment of the application comprises a processor and a memory. The memory is used for storing computer programs, and the processor is used for calling and running the computer programs stored in the memory to execute the cell searching method.
The chip provided by the embodiment of the application is used for realizing the cell search method.
Specifically, the chip includes: and the processor is used for calling and running the computer program from the memory so that the equipment provided with the chip executes the cell searching method.
A computer-readable storage medium provided in an embodiment of the present application is used for storing a computer program, where the computer program enables a computer to execute the cell search method described above.
The computer program product provided by the embodiment of the present application includes computer program instructions, and the computer program instructions enable a computer to execute the cell search method described above.
The computer program provided in the embodiments of the present application, when running on a computer, causes the computer to execute the above cell search method.
By the technical scheme, how the terminal supporting the high power grade uses the high power grade and the default power grade in the cell selection process, the cell reselection process and the initial RRC connection establishment process is determined, so that the terminal can use the default power grade as much as possible to perform cell residence and uplink power use, and the electricity consumption of the terminal and the uplink interference of a network are avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;
fig. 2 is a first flowchart of a cell search method according to an embodiment of the present application;
fig. 3 is a flowchart illustrating a cell search method according to an embodiment of the present application;
fig. 4 is a first schematic structural diagram of a cell search apparatus according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a cell search apparatus according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a communication device provided in an embodiment of the present application;
FIG. 7 is a schematic structural diagram of a chip of an embodiment of the present application;
fig. 8 is a schematic block diagram of a communication system according to an embodiment of the present application.
Detailed Description
Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, or a 5G System.
Illustratively, a communication system 100 applied in the embodiment of the present application is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal 120 (or referred to as a communication terminal, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminals located within the coverage area. Optionally, the Network device 110 may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a Base Station (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or may be a Network device in a Mobile switching center, a relay Station, an Access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a Network-side device in a 5G Network, or a Network device in a Public Land Mobile Network (PLMN) for future evolution, or the like.
The communication system 100 further comprises at least one terminal 120 located within the coverage area of the network device 110. As used herein, "terminal" includes, but is not limited to, connection via a wireline, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a Digital cable, a direct cable connection; and/or another data connection/network; and/or via a Wireless interface, e.g., to a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter; and/or means of another terminal arranged to receive/transmit communication signals; and/or Internet of Things (IoT) devices. A terminal that is arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data Communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A terminal can refer to an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, User terminal, wireless communication device, User agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal in a 5G network, or a terminal in a future evolved PLMN, etc.
Optionally, a Device to Device (D2D) communication may be performed between the terminals 120.
Alternatively, the 5G system or the 5G network may also be referred to as a New Radio (NR) system or an NR network.
Fig. 1 exemplarily shows one network device and two terminals, and optionally, the communication system 100 may include a plurality of network devices and may include other numbers of terminals within the coverage of each network device, which is not limited in this embodiment of the present application.
Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.
It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal 120 having a communication function, and the network device 110 and the terminal 120 may be the specific devices described above and are not described again here; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.
It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The technical solution of the embodiment of the present invention is mainly applied to a 5G mobile communication system, and certainly, the technical solution of the embodiment of the present invention is not limited to the 5G mobile communication system, and can also be applied to other types of mobile communication systems. The following describes the main application scenarios in the 5G mobile communication system:
1) eMB scene: the eMBB targets users to obtain multimedia content, services and data, and its traffic demand is growing very rapidly. Because the eMBB may be deployed in different scenarios, such as indoor, urban, rural, etc., and the difference between the service capability and the requirement is relatively large, the service must be analyzed in combination with the specific deployment scenario.
2) URLLC scene: typical applications of URLLC include: industrial automation, electric power automation, remote medical operation, traffic safety guarantee, and the like.
3) mMTC scenario: typical features of URLLC include: high connection density, small data volume, time delay insensitive service, low cost of the module, long service life and the like.
In NR, the power level of a terminal is generally 23dBm by default, and the terminal supports a high power level of 26dBm in order to enable good uplink coverage at the edge of a cell or in an environment with poor channel conditions. Currently, the support of the high power class by the UE is an optional characteristic of the UE, and the high power class is supported only on 4 frequency bands (bands), and a default power class, namely a 23dBm power class, is supported in other cases.
Fig. 2 is a first schematic flowchart of a cell search method provided in an embodiment of the present application, and as shown in fig. 2, the cell search method includes the following steps:
step 201: the terminal receives first indication information sent by network equipment, wherein the first indication information is used for indicating whether the terminal can use a second power level in a current service cell.
In the embodiment of the application, the terminal can be any equipment which can communicate with a network, such as a mobile phone, a tablet computer, a notebook computer, a desktop computer and the like.
In this embodiment of the application, the power class of the terminal corresponds to one power value, for example, the default power class is 23dBm, and the high power class is 26 dBm.
In this embodiment of the present application, the terminal supports a first power class and a second power class on a frequency band where a current serving cell is located, where the first power class is smaller than the second power class, for example: the UE supports both 23dBm and 26dBm power classes on the band where the current serving cell is located.
In the embodiment of the application, a terminal may obtain first indication information through a system broadcast message on a network side, where the first indication information is used to indicate whether the terminal can use a second power class in a current serving cell. For example: the first indication information is used for indicating whether the terminal can use the power level of 26dBm in the current serving cell.
Step 202: and if the first indication information indicates that the terminal can use the second power level in the current serving cell, the terminal preferentially adopts a first power level to search a target cell, wherein the first power level is smaller than the second power level.
In this embodiment of the application, if the first indication information indicates that the terminal can use the second power level in the current serving cell, then: in a cell reselection process or a cell selection process, the terminal preferentially searches for a target cell by using a first power class, and further, if the terminal does not search for a target cell meeting a cell selection criterion by using the first power class, the terminal: the terminal searches a target cell by adopting the second power level; if the terminal does not search for a target cell meeting the cell selection criterion by using the second power level, then: and the terminal searches an acceptable cell for residing by adopting the first power level or the second power level.
In the above scheme, if the terminal searches for a target cell satisfying a cell selection criterion by using the first power class, then: the terminal resides in the target cell; or, if the terminal searches for a target cell satisfying a cell selection criterion using the second power class, then: and the terminal resides in the target cell.
For example, in the cell selection process, the terminal searches for a target cell using a power level of 23dBm, camps on the target cell if a target cell satisfying the cell selection criterion is searched, and searches for the target cell using a power level of 26dBm if a target cell satisfying the cell selection criterion is not searched.
Here, the cell selection criterion includes S-criterion.
Fig. 3 is a second flowchart of a cell search method according to an embodiment of the present application, where as shown in fig. 3, the cell search method includes the following steps:
step 301: the terminal searches a first type cell by adopting a first power level or a second power level, the frequency priority of the first type cell is greater than that of a current service cell, and the first power level is less than the second power level.
In the embodiment of the application, the terminal can be any equipment which can communicate with a network, such as a mobile phone, a tablet computer, a notebook computer, a desktop computer and the like.
In this embodiment of the application, the power class of the terminal corresponds to one power value, for example, the default power class is 23dBm, and the high power class is 26 dBm.
In this embodiment of the present application, the terminal supports a first power class and a second power class on a frequency band where a current serving cell is located, where the first power class is smaller than the second power class, for example: the UE supports both 23dBm and 26dBm power classes on the band where the current serving cell is located.
In an embodiment of the present application, the method further includes: the terminal receives second indication information sent by network equipment, wherein the second indication information is used for indicating whether the terminal can use a second power level to search the first-class cells; and if the second indication information indicates that the terminal can use a second power level to search the first-class cells, the terminal executes the operation of searching the first-class cells by adopting the first power level or the second power level. Here, the first indication information may be a system broadcast message on the network side.
In this embodiment of the present application, the terminal performs the operation of searching the first-class cell by using the first power class or the second power class, and there may be two implementation manners as follows:
1) the terminal searches a first type cell by adopting a first power level; and if the first type of cells are not searched by adopting the first power level, the terminal searches the first type of cells by adopting a second power level.
Here, the first type cell refers to a high priority cell, and the frequency priority of the high priority cell is greater than that of the current serving cell. For example, the UE first performs a high priority cell search at a 23dBm power level, and if not, performs a high priority cell search at a 26dBm power level, and if found, it camps.
2) And the terminal directly adopts the second power level to search the first type of cells.
For example, the UE may directly use the 26dBm power level for high priority cell search and camp on if found.
In an embodiment, if the terminal searches for a first type cell using the second power class, the terminal resides in the first type cell and searches for a target cell using the first power class. Further, the target cell is searched using the first power level according to a first time interval, wherein the first time interval is predefined or configured by system broadcast.
For example, if the UE searches for a cell and camps on at a power level of 26dBm, the UE searches for a suitable cell and triggers cell reselection at a power level of 23dBm at certain time intervals. The time interval may be protocol specific or a system broadcast configuration.
In the above solution, if the terminal can search the first type of cell by using the second power class, when the terminal triggers the random access procedure,
indicating a power level currently used by the terminal through a first preamble or a first PRACH resource; alternatively, the first and second electrodes may be,
indicating a power level currently used by the terminal by a bit in MSG 3; alternatively, the first and second electrodes may be,
the power level currently used by the terminal is indicated by the uplink transmission resource used to transmit MSG 3.
For example: if the UE can camp on the current serving cell according to the power level of 26dBm, when the UE initiates an RRC connection establishment triggering random access process, indicating the power level currently used by the terminal at the network side by the following conditions:
1) indicating the power level currently used by the terminal by reserving a special preamble code or PRACH resource;
2) the power level currently used by the terminal is indicated by a bit indicating bit in the MSG3, for example, 1 represents 23dBm power level, and 0 represents 26dBm power level;
3) the network side allocates 2 UL Grants for transmitting MSG3, one UL Grant corresponds to a power level of 26dBm, the other UL Grant corresponds to a power level of 23dBm, and UE selects one UL Grant to transmit uplink MSG3 to indicate the power level currently used by the terminal.
Based on this, the network side can schedule correct scheduling information to the UE after knowing the current power class of the UE.
Fig. 4 is a schematic structural diagram of a cell search apparatus according to an embodiment of the present application, where as shown in fig. 4, the cell search apparatus includes:
a receiving unit 401, configured to receive first indication information sent by a network device, where the first indication information is used to indicate whether the terminal can use a second power class in a current serving cell;
a searching unit 402, configured to preferentially search for a target cell by using a first power class if the first indication information indicates that the terminal can use the second power class in a current serving cell, where the first power class is smaller than the second power class.
In an embodiment, during a cell reselection procedure or a cell selection procedure, if the searching unit 402 does not search for a target cell satisfying a cell selection criterion using the first power level, then: the searching unit 402 searches for a target cell using the second power class; if the searching unit 402 does not search for a target cell that satisfies cell selection criteria using the second power class, then: the searching unit 402 searches for an acceptable cell for camping using the first power class or the second power class.
In one embodiment, the apparatus further comprises: a resident unit 403;
if the searching unit 402 searches for a target cell satisfying cell selection criteria using the first power class, then: the camping unit 403 camps on the target cell; alternatively, the first and second electrodes may be,
if the searching unit 402 searches for a target cell satisfying cell selection criteria using the second power class, then: the camping unit 403 camps on the target cell.
In an embodiment, the cell selection criterion comprises an S-criterion.
It should be understood by those skilled in the art that the related description of the cell search apparatus in the embodiments of the present application can be understood by referring to the related description of the cell search method in the embodiments of the present application.
Fig. 5 is a schematic structural diagram of a cell search apparatus according to an embodiment of the present application, where as shown in fig. 5, the cell search apparatus includes:
a searching unit 501, configured to search a first class cell by using a first power class or a second power class, where a frequency priority of the first class cell is greater than a frequency priority of a current serving cell, and the first power class is smaller than the second power class.
In one embodiment, the searching unit 501 performs searching for a first type of cell by using a first power level; if the first class cell is not searched by using the first power class, the searching unit 501 performs the search of the first class cell by using the second power class.
In an embodiment, the searching unit 501 directly uses the second power level to search for the first type of cell.
In one embodiment, the apparatus further comprises:
a receiving unit 502, configured to receive second indication information sent by a network device, where the second indication information is used to indicate whether the terminal is capable of searching for the first-class cell using a second power class;
wherein, if the second indication information indicates that the terminal can use the second power class to search for the first class cell, the searching unit 501 performs the operation of searching for the first class cell with the first power class or the second power class.
In one embodiment, the apparatus further comprises: a dwelling unit 503;
if the searching unit 501 searches for the first type cell by using the second power class, the camping unit 503 camps on the first type cell, and the searching unit 501 searches for the target cell by using the first power class.
In an embodiment, the searching unit 501 searches for a target cell using the first power level according to a first time interval, where the first time interval is predefined or configured by a system broadcast.
In one embodiment, the apparatus further comprises: a random access unit 504;
if the terminal can search for the first type of cell using the second power class, the random access unit 504, when triggering a random access procedure,
indicating a power level currently used by the terminal through a first preamble or a first PRACH resource; alternatively, the first and second electrodes may be,
indicating a power level currently used by the terminal by a bit in MSG 3; alternatively, the first and second electrodes may be,
the power level currently used by the terminal is indicated by the uplink transmission resource used to transmit MSG 3.
It should be understood by those skilled in the art that the related description of the cell search apparatus in the embodiments of the present application can be understood by referring to the related description of the cell search method in the embodiments of the present application.
Fig. 6 is a schematic structural diagram of a communication device 600 according to an embodiment of the present application. The communication device may be any type of terminal, and the communication device 600 shown in fig. 6 includes a processor 610, and the processor 610 may call and execute a computer program from a memory to implement the method in the embodiment of the present application.
Optionally, as shown in fig. 6, the communication device 600 may further include a memory 620. From the memory 620, the processor 610 may call and run a computer program to implement the method in the embodiment of the present application.
The memory 620 may be a separate device from the processor 610, or may be integrated into the processor 610.
Optionally, as shown in fig. 6, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.
The transceiver 630 may include a transmitter and a receiver, among others. The transceiver 630 may further include one or more antennas.
Optionally, the communication device 600 may specifically be a network device in the embodiment of the present application, and the communication device 600 may implement a corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.
Optionally, the communication device 600 may specifically be a mobile terminal/terminal according to this embodiment, and the communication device 600 may implement a corresponding process implemented by the mobile terminal/terminal in each method according to this embodiment, which is not described herein again for brevity.
Fig. 7 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 700 shown in fig. 7 includes a processor 710, and the processor 710 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
Optionally, as shown in fig. 7, the chip 700 may further include a memory 720. From the memory 720, the processor 710 can call and run a computer program to implement the method in the embodiment of the present application.
The memory 720 may be a separate device from the processor 710, or may be integrated into the processor 710.
Optionally, the chip 700 may further include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and in particular, may obtain information or data transmitted by other devices or chips.
Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.
Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.
Optionally, the chip may be applied to the mobile terminal/terminal in the embodiment of the present application, and the chip may implement a corresponding process implemented by the mobile terminal/terminal in each method in the embodiment of the present application, and for brevity, no further description is given here.
It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-on-chip, system-on-chip or system-on-chip, etc.
Fig. 8 is a schematic block diagram of a communication system 900 provided in an embodiment of the present application. As shown in fig. 8, the communication system 900 includes a terminal 910 and a network device 920.
The terminal 910 may be configured to implement the corresponding function implemented by the terminal in the foregoing method, and the network device 920 may be configured to implement the corresponding function implemented by the network device in the foregoing method, which is not described herein again for brevity.
It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.
It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), Direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.
The embodiment of the application also provides a computer readable storage medium for storing the computer program.
Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.
Optionally, the computer-readable storage medium may be applied to the mobile terminal/terminal in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal in each method in the embodiment of the present application, which is not described herein again for brevity.
Embodiments of the present application also provide a computer program product comprising computer program instructions.
Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions enable the computer to execute corresponding processes implemented by the network device in the methods in the embodiment of the present application, which are not described herein again for brevity.
Optionally, the computer program product may be applied to the mobile terminal/terminal in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal/terminal in the methods in the embodiment of the present application, which are not described herein again for brevity.
The embodiment of the application also provides a computer program.
Optionally, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.
Optionally, the computer program may be applied to the mobile terminal/terminal in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the mobile terminal/terminal in each method in the embodiment of the present application, which is not described herein again for brevity.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (11)

1. A method of cell search, the method comprising:
a terminal receives first indication information sent by network equipment, wherein the first indication information is used for indicating whether the terminal can use a second power level in a current service cell;
and if the first indication information indicates that the terminal can use the second power level in the current serving cell, the terminal preferentially adopts a first power level to search a target cell, wherein the first power level is smaller than the second power level.
2. The method of claim 1, wherein the method further comprises:
in a cell reselection process or a cell selection process, if the terminal does not search for a target cell meeting a cell selection criterion by using the first power level, then: the terminal searches a target cell by adopting the second power level; if the terminal does not search for a target cell meeting the cell selection criterion by using the second power level, then: and the terminal searches an acceptable cell for residing by adopting the first power level or the second power level.
3. The method of claim 2, wherein the method further comprises:
if the terminal searches a target cell meeting the cell selection criterion by adopting the first power level, then: the terminal resides in the target cell; alternatively, the first and second electrodes may be,
if the terminal searches a target cell meeting the cell selection criterion by adopting the second power level, then: and the terminal resides in the target cell.
4. A method according to claim 2 or 3, wherein the cell selection criterion comprises an S-criterion.
5. An apparatus for cell search, the apparatus comprising:
a receiving unit, configured to receive first indication information sent by a network device, where the first indication information is used to indicate whether a terminal can use a second power class in a current serving cell;
a searching unit, configured to preferentially search for a target cell by using a first power class if the first indication information indicates that the terminal can use the second power class in a current serving cell, where the first power class is smaller than the second power class.
6. The apparatus of claim 5, wherein during a cell reselection procedure or a cell selection procedure, if the searching unit does not search for a target cell that satisfies cell selection criteria using the first power level: the searching unit searches a target cell by adopting the second power level; if the searching unit does not search for a target cell that satisfies cell selection criteria using the second power class, then: and the searching unit searches the acceptable cell for residing by adopting the first power level or the second power level.
7. The apparatus of claim 6, wherein the apparatus further comprises: a dwelling unit;
if the searching unit searches for a target cell satisfying cell selection criteria using the first power class, then: the resident unit resides in the target cell; alternatively, the first and second electrodes may be,
if the searching unit searches for a target cell satisfying cell selection criteria using the second power class, then: the camping unit camps on the target cell.
8. The apparatus of claim 6 or 7, wherein the cell selection criterion comprises an S-criterion.
9. A terminal, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 1 to 4.
10. A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 4.
11. A computer-readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 4.
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