WO2019136659A1 - 小区重选方法、装置及系统 - Google Patents

小区重选方法、装置及系统 Download PDF

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Publication number
WO2019136659A1
WO2019136659A1 PCT/CN2018/072221 CN2018072221W WO2019136659A1 WO 2019136659 A1 WO2019136659 A1 WO 2019136659A1 CN 2018072221 W CN2018072221 W CN 2018072221W WO 2019136659 A1 WO2019136659 A1 WO 2019136659A1
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WO
WIPO (PCT)
Prior art keywords
cell
reselection priority
frequency
reselection
terminal
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PCT/CN2018/072221
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English (en)
French (fr)
Inventor
唐海
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 CN201880036926.2A priority Critical patent/CN110710258B/zh
Priority to PCT/CN2018/072221 priority patent/WO2019136659A1/zh
Publication of WO2019136659A1 publication Critical patent/WO2019136659A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements

Definitions

  • the embodiments of the present application relate to the field of communications, and in particular, to a cell reselection method, apparatus, and system.
  • a terminal in an idle state usually needs to perform procedures such as Public Land Mobile Network (PLMN) selection, cell selection/cell reselection, and location registration when accessing a cell.
  • PLMN Public Land Mobile Network
  • the cell reselection process may enable the terminal to camp on a suitable cell.
  • an access network device may define configuration information of a plurality of defined cells on at least two wideband carriers, where at least two defined cells have the same frequency and are located in different Broadband carrier.
  • the configuration information of the defined cell includes configuration information of the SS/PBCH block (SSB) of the defined cell.
  • SSB SS/PBCH block
  • the terminal searches for at least two defined cells in the process of cell reselection, how to quickly reselect the defined cell is a problem to be solved.
  • the embodiment of the present application provides a cell reselection method, device, and system, which can solve the problem of how to quickly reselect a cell when the terminal performs cell reselection.
  • a cell reselection method comprising:
  • the terminal receives the cell reselection priority information sent by the access network device, where the cell reselection priority information includes a first reselection priority of the first defined cell and a second reselection priority of the second defined cell;
  • the frequency of the first defined cell and the frequency of the second defined cell are located on different broadband carriers, and the frequency of the first defined cell is located in the same broadband as the frequency of the first serving cell where the terminal is located.
  • the terminal reselects the serving cell according to the cell reselection priority information to obtain a second serving cell
  • the terminal accesses the second serving cell.
  • a cell reselection method comprising:
  • the access network device generates cell reselection priority information of the first serving cell where the terminal is located, where the cell reselection priority information includes a first reselection priority of the first defined cell and a second weight of the second defined cell. Selecting a priority; the frequency of the first defined cell and the frequency of the second defined cell are located on different broadband carriers, and the frequency of the first defined cell is located at a frequency of the first serving cell On the same broadband carrier;
  • the access network device sends the cell reselection priority information to the terminal.
  • a cell reselection apparatus comprising:
  • a receiving unit configured to receive cell reselection priority information sent by the access network device, where the cell reselection priority information includes a first reselection priority of the first defined cell and a second reselection priority of the second defined cell
  • the cell reselection priority information includes a first reselection priority of the first defined cell and a second reselection priority of the second defined cell
  • the frequency of the first defined cell and the frequency of the second defined cell are located on different broadband carriers, the frequency of the first defined cell and the frequency of the first serving cell where the terminal is located
  • the points are on the same broadband carrier;
  • a reselecting unit configured to reselect a serving cell according to the cell reselection priority information, to obtain a second serving cell
  • An access unit configured to access the second serving cell.
  • a cell reselection apparatus comprising:
  • a generating unit configured to generate cell reselection priority information of the first serving cell where the terminal is located, where the cell reselection priority information includes a first reselection priority of the first defined cell and a second defined cell Reselecting a priority; the frequency of the first defined cell and the frequency of the second defined cell are located on different broadband carriers, and the frequency of the first defined cell and the frequency of the first serving cell Located on the same broadband carrier;
  • a sending unit configured to send the cell reselection priority information to the terminal.
  • a terminal comprising a processor and a memory, the memory storing at least one instruction for execution by the processor to implement the first The cell reselection method described in the aspect.
  • an access network device comprising a processor and a memory, the memory storing at least one instruction, the at least one instruction being used by the processor Executed to implement the cell reselection method as described in the second aspect above.
  • a computer readable storage medium storing at least one instruction for execution by a processor to implement the cell weight of the first aspect Selection method.
  • a computer readable storage medium storing at least one instruction for being executed by a processor to implement the cell weight of the second aspect Selection method.
  • a communication system comprising: a terminal and an access network device;
  • the terminal includes the device according to the third aspect, the access network device includes the device according to the fourth aspect; or the terminal is the terminal according to the fifth aspect, the access network device An access network device as described in the sixth aspect.
  • the cell reselection priority information includes a first reselection priority of the first defined cell and a second reselection priority of the second defined cell; It is time consuming to switch between the defined cells whose frequency points belong to different bandwidth carriers.
  • the frequency point and the first service may be preferentially selected. The frequency of the cell belongs to the first defined cell on the same bandwidth carrier, and therefore, the efficiency of the cell performing cell reselection can be improved.
  • FIG. 1 is a schematic structural diagram of a communication network provided by an exemplary embodiment of the present application.
  • FIG. 2 is a flowchart of a cell reselection method provided by an exemplary embodiment of the present application
  • FIG. 3 is a flowchart of a cell reselection method provided by another exemplary embodiment of the present application.
  • FIG. 4 is a flowchart of a cell reselection method provided by another exemplary embodiment of the present application.
  • FIG. 5 is a schematic diagram of a defined cell on a wideband carrier provided by an exemplary embodiment of the present application.
  • FIG. 6 is a block diagram of a cell reselection apparatus provided by an exemplary embodiment of the present application.
  • FIG. 7 is a block diagram of a cell reselection apparatus according to another exemplary embodiment of the present application.
  • FIG. 8 is a structural block diagram of a terminal provided by another exemplary embodiment of the present application.
  • FIG. 9 is a structural block diagram of an access network device according to another exemplary embodiment of the present application.
  • a “module” as referred to herein generally refers to a program or instruction stored in a memory that is capable of performing certain functions;
  • "unit” as referred to herein generally refers to a functional structure that is logically divided, the "unit” It can be implemented by pure hardware or a combination of hardware and software.
  • Multiple as referred to herein means two or more. "and/or”, describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately.
  • the character “/” generally indicates that the contextual object is an "or” relationship.
  • the words “first”, “second” and similar terms used in the specification and claims of the present application do not denote any order, quantity, or importance, but are merely used to distinguish different components.
  • FIG. 1 is a schematic structural diagram of a mobile communication system according to an embodiment of the present application.
  • the mobile communication system can be a 5G system, also known as an NR system.
  • the mobile communication system includes an access network device 120 and a terminal 140.
  • Access network device 120 can be a base station.
  • the base station may be a base station (gNB) employing a centralized distributed architecture in a 5G system.
  • the access network device 120 adopts a centralized distributed architecture it generally includes a central unit (CU) and at least two distributed units (DUs).
  • a centralized data unit is provided with a Packet Data Convergence Protocol (PDCP) layer, a Radio Link Control (RLC) layer, and a Media Access Control (MAC) layer protocol stack;
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Media Access Control
  • a physical (physical, PHY) layer protocol stack is provided in the unit.
  • the specific implementation manner of the access network device 120 in this embodiment of the present application is not limited.
  • the access network device may further include a home base station (Home eNB, HeNB), a relay, a pico base station Pico, and the like.
  • Access network device 120 may also be referred to as a network side device.
  • the generalized network side device further includes a core network device (not shown) located above the access network device 120.
  • the access network device 120 and the terminal 140 establish a wireless connection through the wireless air interface.
  • the wireless air interface is a wireless air interface based on the fifth generation mobile communication network technology (5G) standard, for example, the wireless air interface is a new air interface; or the wireless air interface may also be a 5G based next generation mobile communication network technology. Standard wireless air interface.
  • Terminal 140 may be a device that provides voice and/or data connectivity to a user.
  • the terminal can communicate with one or more core networks via a Radio Access Network (RAN), which can be a mobile terminal such as a mobile telephone (or "cellular" telephone) and a computer with a mobile terminal.
  • RAN Radio Access Network
  • multiple access network devices 120 and/or multiple terminals 140 may be included, and one access network device 120 and one terminal 140 are shown in FIG.
  • this embodiment does not limit this.
  • the application scenarios of the 5G system include, but are not limited to, Enhanced Mobile BroadBand (eMBB), Ultra Reliable & Low Latency Communication (URLLC), Massive Machine Type Communication (massive Machine Type Communication) , mMTC).
  • eMBB Enhanced Mobile BroadBand
  • URLLC Ultra Reliable & Low Latency Communication
  • Massive Machine Type Communication massive Machine Type Communication
  • mMTC massive Machine Type Communication
  • eMBB aims at users to obtain multimedia content, services and data, and its demand is growing rapidly.
  • eMBB may be deployed in different scenarios, such as indoors, urban areas, and rural areas, the difference in capabilities and needs is relatively large.
  • Typical applications for URLLC include: industrial automation, power automation, telemedicine operations (surgery), and traffic safety.
  • mMTC include: high connection density, small data volume, delay-insensitive service, low cost and long life of the module.
  • Synchronization signal/physical broadcast channel block SS/PBCH block, SSB: common synchronization signal (PSS), secondary synchronization signal (SSS) and physical broadcast channel (PBCH) Form an SSB.
  • PSS common synchronization signal
  • SSS secondary synchronization signal
  • PBCH physical broadcast channel
  • the SSB occupies 4 symbols in the time domain, and the frequency domain occupies a total of 240 subcarriers.
  • the SSB can also occupy resources in the time domain and/or the frequency domain in other manners, which is not limited in this embodiment.
  • Wideband carrier A carrier over a wide bandwidth. For example: a carrier on a 100 MHz bandwidth, a carrier on a bandwidth of 400 MHz, and the like.
  • a cell defined by a frequency (or frequency) on a wideband carrier.
  • Serving cell A defined cell where the terminal currently resides.
  • FIG. 2 shows a flowchart of a cell reselection method provided by an exemplary embodiment of the present application. This embodiment is exemplified by applying the method to the terminal shown in FIG. 1.
  • the method includes:
  • Step 201 The terminal receives the cell reselection priority information sent by the access network device, where the cell reselection priority information includes a first reselection priority of the first defined cell and a second reselection priority of the second defined cell.
  • the frequency of the first defined cell and the frequency of the second defined cell are located on different broadband carriers, and the frequency of the first defined cell is located on the same broadband carrier as the frequency of the first serving cell where the terminal is located.
  • the first reselection priority is higher than the second reselection priority.
  • the terminal in the cell reselection in the present application is a terminal in an idle state, and the terminal may be just powered on; or, returning from the RRC_CONNECTED mode to the terminal in the RRC_IDLE mode; or, re-entering the serving cell. Terminal etc.
  • the cell reselection priority information is used to indicate which of the defined cells is preferentially selected by the terminal when performing cell reselection.
  • the cell reselection priority information is sent by the access network device by using a system message.
  • the terminal receives the system message sent by the access network device in a broadcast manner, thereby obtaining the cell reselection priority in the system message. Level information.
  • system message may also include other information, such as: SSB configuration information.
  • Step 202 The terminal reselects the serving cell according to the cell reselection priority information to obtain the second serving cell.
  • Step 203 The terminal accesses the second serving cell.
  • the cell reselection method receives the cell reselection priority information sent by the access network device, and the cell reselection priority information includes the first reselection priority of the first defined cell. And the second re-selection priority of the second defined cell; the terminal takes a long time to switch between the defined cells whose frequency points belong to different bandwidth carriers, and in this embodiment, the terminal uses the cell reselection priority information to When the cell is reselected, the first defined cell on the same bandwidth carrier as the frequency of the first serving cell may be preferentially selected. Therefore, the efficiency of the cell to perform cell reselection may be improved.
  • FIG. 3 shows a flowchart of a cell reselection method provided by an exemplary embodiment of the present application. This embodiment is exemplified by applying the method to the access network device shown in FIG. 1.
  • the method includes:
  • Step 301 The access network device generates cell reselection priority information of the first serving cell where the terminal is located, where the cell reselection priority information includes a first reselection priority of the first defined cell and a second defined cell. Reselecting the priority; the frequency of the first defined cell and the frequency of the second defined cell are located on different broadband carriers, and the frequency of the first defined cell is located on the same broadband carrier as the frequency of the first serving cell.
  • the first reselection priority is higher than the second reselection priority.
  • the cell reselection priority information of the first serving cell refers to: cell reselection priority information that is sent to the terminal that resides in the first serving cell.
  • Step 302 The access network device sends the cell reselection priority information to the terminal.
  • the cell reselection priority information is used by the terminal to determine the second serving cell after the reselection when performing cell reselection.
  • the cell reselection method generates the cell reselection priority information of the first serving cell where the terminal is located, and the cell reselection priority information includes the first weight of the first defined cell. Selecting the priority and the second reselection priority of the second defined cell; the terminal is time-consuming to switch between the defined cells whose frequency points belong to different bandwidth carriers, and in this embodiment, the terminal preferentially reselects according to the cell.
  • the first defined cell whose frequency point belongs to the same bandwidth carrier as the frequency of the first serving cell may be preferentially selected. Therefore, the efficiency of the cell performing cell reselection may be improved.
  • FIG. 4 shows a flowchart of a cell reselection method provided by an exemplary embodiment of the present application. This embodiment is exemplified by applying the method to the mobile communication system shown in FIG. 1.
  • the method includes:
  • Step 401 The access network device generates cell reselection priority information of the first serving cell where the terminal is located, where the cell reselection priority information includes a first reselection priority of the first defined cell and a second defined cell. Reselecting the priority; the frequency of the first defined cell and the frequency of the second defined cell are located on different broadband carriers, and the frequency of the first defined cell is located on the same broadband carrier as the frequency of the first serving cell.
  • the first reselection priority is higher than the second reselection priority.
  • the frequency of the first defined cell is the same as the frequency of the second defined cell, and is different from the frequency of the first serving cell.
  • the frequency of the first defined cell and the frequency of the second defined cell are in a receiving bandwidth of the terminal.
  • the first defined cell is adjacent to the first serving cell
  • the second defined cell is adjacent to the first serving cell
  • priority information is reselected corresponding to different cells.
  • the first reselection priority of the first defined cell whose frequency is f2 on the wideband carrier 501 is higher than the frequency point on the wideband carrier 502.
  • the first reselection priority of the first defined cell whose frequency is f3 on the wideband carrier 501 is higher than the second reselection priority of the second defined cell whose frequency is f2, f3, f4 or f5 on the wideband carrier 502 .
  • the reselection priority feature is also required to be met, and this embodiment is not enumerated here.
  • the number of cell reselection priority information is at least two; each cell reselection priority information includes a physical cell identifier (PCI), a frequency point, and a reselection priority.
  • PCI physical cell identifier
  • the PCI is used to identify a defined cell; or the PCI is used to identify at least two defined cells having the same frequency point.
  • the reselection priorities of the at least two defined cells are the same.
  • the reselection priority is represented by a level indication identifier.
  • the smaller the level indication identifier the higher the priority of the reselection priority.
  • the reselection priority indicated by the level indication identifier being 1 is higher than the reselection priority indicated by the level indication identifier being 2 is higher than the reselection priority indicated by the level indication identifier being 3.
  • the frequency of the first serving cell is the frequency point f1 on the broadband carrier 501.
  • the cell reselection priority information may include the following contents:
  • PCI1 indicates that the broadband carrier 501 has a physical cell identifier of the defined cell with the frequency point f2; 1 indicates that the PCI1 reselection priority is the highest; and for the second cell reselection priority information: PCI2 indicates the physical cell identifier of the defined cell with the frequency band f2 on the wideband carrier 502; 2 indicates that the reselection priority of PCI1 is lower than the reselection priority of PCI1; and the reselection priority information for the second cell: all indicates the wideband carrier 501 and the wideband carrier 502 all the physical cell identifiers of the defined cells whose frequency is f3; 3 indicates that the reselection priorities of all the defined cells whose frequency is f3 are lower than the reselection priorities of PCI2.
  • the cell reselection priority information further includes a third reselection priority of the third defined cell; the frequency of the third defined cell is located on the same broadband carrier as the frequency of the first serving cell, and the third defined cell The load is lower than the load of the first defined cell; the third reselection priority is higher than the first reselection priority.
  • the terminals are randomly distributed in the defined cells defined by the wideband carrier.
  • the cell is defined according to the definition.
  • the load is used to determine the reselection priority. In this way, it can be ensured that the load of each defined cell is relatively balanced.
  • the cell shown in FIG. 5 is defined, and the frequency of the first serving cell is the frequency f1 on the wideband carrier 501.
  • the defined cell of the frequency f3 on the wideband carrier 501 is lower than the bandwidth.
  • the frequency of the frequency point f2 on the carrier 501 defines the load of the cell, and the reselection priority of the defined cell of the frequency point f3 on the wideband carrier 501 is higher than the reselection priority of the defined cell of the frequency point f2 on the wideband carrier 501.
  • Step 402 The access network device sends cell reselection priority information to the terminal.
  • the cell reselection priority information is carried in a system message, where the system message further includes threshold information when the cell is reselected.
  • the threshold information is used by the terminal to determine whether the signal quality of the defined cell meets the minimum quality requirement.
  • the access network device sends the system message in a broadcast form.
  • Step 403 The terminal receives the cell reselection priority information sent by the access network device, where the cell reselection priority information includes a first reselection priority of the first defined cell and a second reselection priority of the second defined cell.
  • the frequency point of a defined cell and the frequency of the second defined cell are located on different broadband carriers, and the frequency of the first defined cell is located on the same broadband carrier as the frequency of the first serving cell where the terminal is located.
  • the first reselection priority is higher than the second reselection priority.
  • the terminal after receiving the first serving cell, the terminal receives the system message sent by the access network device, where the system message carries the cell reselection priority information.
  • the system message also includes threshold information when the cell is reselected.
  • the system message is sent by the access network device in a broadcast form.
  • Step 404 The terminal performs signal measurement on the first defined cell and the second defined cell to obtain a signal quality of each defined cell.
  • the first defined cell is adjacent to the first serving cell
  • the second defined cell is adjacent to the first serving cell
  • the terminal further performs signal measurement on the first serving cell.
  • Step 405 If the first reselection priority is the highest reselection priority in the cell reselection priority information, the signal quality of the first defined cell and the signal quality of the second defined cell are greater than the threshold information, and the first When the camping duration of the serving cell is greater than or equal to the preset duration, the terminal determines the first defined cell as the second serving cell.
  • the threshold information is carried in the system message by the access network device, where the threshold information is sent by the access network device.
  • the threshold information may be the same for different first serving cells; or different. This embodiment does not limit the value of the threshold information. Schematically, the value of the threshold information is 1.
  • the terminal may select, as the second serving cell after the reselection, the defined cell with the highest reselection priority in the defined cell whose signal quality is greater than the threshold information.
  • the terminal may select, as the second serving cell after the reselection, the defined cell with the highest reselection priority in the defined cell whose signal quality is greater than the threshold information.
  • the terminal selects a signal quality greater than the threshold information and the reselection priority is the highest among the reselection priorities except the first reselection priority.
  • the cell is defined, for example, the second defined cell is used as the second serving cell.
  • the cell shown in FIG. 5 is defined, and the frequency of the first serving cell is the frequency f1 on the wideband carrier 501.
  • the reselection priority information received by the terminal is as follows.
  • the terminal determines that PCI1 is the second serving cell.
  • the terminal determines that PCI2 is the second serving cell.
  • the terminal determines that the defined cell is the second serving cell.
  • Step 406 The terminal accesses the second serving cell.
  • the cell reselection method generates the cell reselection priority information of the first serving cell where the terminal is located, and the cell reselection priority information includes the first weight of the first defined cell. Selecting the priority and the second reselection priority of the second defined cell; the terminal is time-consuming to switch between the defined cells whose frequency points belong to different bandwidth carriers, and in this embodiment, the terminal preferentially reselects according to the cell.
  • the first defined cell whose frequency point belongs to the same bandwidth carrier as the frequency of the first serving cell may be preferentially selected. Therefore, the efficiency of the cell performing cell reselection may be improved.
  • the terminals are randomly distributed in the defined cells defined by the wideband carrier.
  • the cell is defined according to the definition. The load is used to determine the reselection priority. In this way, it can be ensured that the load of each defined cell is relatively balanced.
  • the frequency of the third defined cell is located on the same broadband carrier as the frequency of the first serving cell.
  • the load of the third defined cell is lower than the load of the first defined cell; the third reselection priority is higher than the first reselection priority; after the terminal receives the cell reselection priority information, the terminal also defines the third defined cell.
  • the third defined cell is determined as the second serving cell, and then the second serving cell is accessed.
  • the access network device may further determine the reselection priority of the defined cell in combination with the load and the reselection efficiency, for example, when the first defined cell (ie, the frequency point and the first serving cell) The load on each defined cell where the frequency points are located on the same wideband carrier is large, and the load on the second defined cell (ie, the defined frequency of the frequency point and the frequency of the first serving cell on different broadband carriers) is When the time is small, the second reselection priority of the second defined cell may also be higher than the first reselection priority of the first defined cell; or the first defined cell and the second defined cell having the same frequency point, first The reselection priority may also be the same as the reselection priority of the second defined cell.
  • the following is a device embodiment of the present application. Since the device embodiment has a corresponding relationship with the method embodiment, the technical details not described in the device embodiment may refer to the corresponding description in the foregoing method embodiments.
  • FIG. 6 shows a block diagram of a cell reselection apparatus provided by an exemplary embodiment of the present application.
  • the cell reselection device can be implemented as all or part of the terminal by software, hardware or a combination of the two.
  • the apparatus includes a receiving unit 610, a reselecting unit 620, and an access unit 630.
  • the receiving unit 610 is configured to receive cell reselection priority information that is sent by the access network device, where the cell reselection priority information includes a first reselection priority of the first defined cell and a second reselection of the second defined cell.
  • the cell reselection priority information includes a first reselection priority of the first defined cell and a second reselection of the second defined cell.
  • a frequency of the first defined cell and a frequency of the second defined cell are located on different broadband carriers, where the frequency of the first defined cell and the first serving cell where the terminal is located The frequency points are on the same broadband carrier;
  • a reselecting unit 620 configured to reselect a serving cell according to the cell reselection priority information, to obtain a second serving cell;
  • the access unit 630 is configured to access the second serving cell.
  • the frequency of the first defined cell is the same as the frequency of the second defined cell, and is different from the frequency of the first serving cell.
  • the number of the cell reselection priority information is at least two;
  • Each cell reselection priority information includes a physical cell identity PCI, a frequency point, and a reselection priority.
  • the PCI is used to identify a defined cell; or the PCI is used to identify at least two defined cells having the same frequency point.
  • the cell reselection priority information is carried in a system message
  • the system message further includes threshold information when the cell is reselected.
  • the reselecting unit 620 is further configured to:
  • the threshold information is determined, and when the camping duration of the first serving cell is greater than or equal to a preset duration, the first defined cell is determined as the second serving cell.
  • the first reselection priority is higher than the second reselection priority.
  • FIG. 7 is a block diagram of a cell reselection apparatus provided by an exemplary embodiment of the present application.
  • the cell reselection apparatus may be implemented as software or hardware, or a combination of both, to implement all of the access network devices or portion.
  • the cell reselection device includes: a generating unit 710 and a transmitting unit 720.
  • the generating unit 710 is configured to generate cell reselection priority information of the first serving cell where the terminal is located, where the cell reselection priority information includes a first reselection priority of the first defined cell and a second defined cell
  • the frequency of the first defined cell and the frequency of the second defined cell are located on different broadband carriers, the frequency of the first defined cell and the frequency of the first serving cell The points are on the same broadband carrier;
  • the sending unit 720 is configured to send the cell reselection priority information to the terminal.
  • the frequency of the first defined cell is the same as the frequency of the second defined cell, and is different from the frequency of the first serving cell.
  • the number of the cell reselection priority information is at least two;
  • Each cell reselection priority information includes a physical cell identity PCI, a frequency point, and a reselection priority.
  • the PCI is used to identify a defined cell; or the PCI is used to identify at least two defined cells having the same frequency point.
  • the cell reselection priority information is carried in a system message
  • the system message further includes threshold information when the cell is reselected.
  • the cell reselection priority information further includes a third reselection priority of the third defined cell; the frequency of the third defined cell is located on the same broadband carrier as the frequency of the first serving cell.
  • the load of the third defined cell is lower than the load of the first defined cell; the third reselection priority is higher than the first reselection priority.
  • the first reselection priority is higher than the second reselection priority.
  • FIG. 8 is a schematic structural diagram of a terminal provided by an exemplary embodiment of the present application.
  • the terminal includes: a processor 101 , a receiver 102 , a transmitter 103 , a memory 104 , and a bus 105 .
  • the processor 101 includes one or more processing cores, and the processor 101 executes various functional applications and information processing by running software programs and modules.
  • the receiver 102 and the transmitter 103 can be implemented as a communication component, which can be a communication chip.
  • the memory 104 is coupled to the processor 101 via a bus 105.
  • the memory 104 is operative to store at least one instruction, and the processor 101 is configured to execute the at least one instruction to implement various steps performed by the terminal in the above method embodiment.
  • memory 104 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, including, but not limited to, a magnetic or optical disk, electrically erasable and programmable Read Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Static Anytime Access Memory (SRAM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Programmable Read Only Memory (PROM) .
  • EEPROM electrically erasable and programmable Read Only Memory
  • EPROM Erasable Programmable Read Only Memory
  • SRAM Static Anytime Access Memory
  • ROM Read Only Memory
  • Magnetic Memory Magnetic Memory
  • Flash Memory Programmable Read Only Memory
  • FIG. 9 is a schematic structural diagram of an access network device provided by an exemplary embodiment of the present application.
  • the access network device includes: a processor 111 , a receiver 112 , a transmitter 113 , a memory 114 , and a bus 115 . .
  • the processor 111 includes one or more processing cores, and the processor 111 executes various functional applications and information processing by running software programs and modules.
  • Receiver 112 and transmitter 113 can be implemented as a communication component, which can be a communication chip.
  • the memory 114 is coupled to the processor 111 via a bus 115.
  • the memory 114 can be used to store at least one instruction, and the processor 111 is configured to execute the at least one instruction to implement various steps performed by the access network device in the foregoing method embodiment.
  • memory 114 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, including, but not limited to, a magnetic or optical disk, electrically erasable and programmable Read Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Static Anytime Access Memory (SRAM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Programmable Read Only Memory (PROM) .
  • EEPROM electrically erasable and programmable Read Only Memory
  • EPROM Erasable Programmable Read Only Memory
  • SRAM Static Anytime Access Memory
  • ROM Read Only Memory
  • Magnetic Memory Magnetic Memory
  • Flash Memory Programmable Read Only Memory
  • the present application provides a computer readable storage medium having stored therein at least one instruction that is loaded and executed by the processor to implement the cell reselection method provided by the various method embodiments described above.
  • the present application also provides a computer program product that, when run on a computer, causes the computer to perform the cell reselection method provided by the various method embodiments described above.
  • the functions described in the embodiments of the present application may be implemented in hardware, software, firmware, or any combination thereof.
  • the functions may be stored in a computer readable medium or transmitted as one or more instructions or code on a computer readable medium.
  • Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
  • a storage medium may be any available media that can be accessed by a general purpose or special purpose computer.

Abstract

本申请实施例提供了一种小区重选方法、装置及系统，涉及通信领域，所述方法包括：终端接收接入网设备发送的小区重选优先级信息，根据小区重选优先级信息重选服务小区，得到第二服务小区；接入该第二服务小区；小区重选优先级信息包括第一定义小区的第一重选优先级和第二定义小区的第二重选优先级；第一定义小区的频点和第二定义小区的频点位于不同的宽带载波上，第一定义小区的频点与终端所处的第一服务小区的频点位于同一宽带载波上。由于终端可以根据小区重选优先级信息优先选择频点与第一服务小区的频点属于同一带宽载波上的第一定义小区，可以提高终端进行小区重选的效率。

Description

小区重选方法、装置及系统 技术领域
本申请实施例涉及通信领域，特别涉及一种小区重选方法、装置及系统。
背景技术
空闲状态下的终端在接入小区时通常需要执行公共陆地移动网络(Public Land Mobile Network，PLMN)选择、小区选择/小区重选和位置登记等过程。其中，小区重选过程可以使得终端驻留到合适的小区。
在新空口(New Radio，NR)系统中，接入网设备可以在至少两个宽带载波上定义多个定义小区的配置信息，其中，存在至少两个定义小区的频点相同，且位于不同的宽带载波。定义小区的配置信息包括该定义小区的SS/PBCH块(SS/PBCH block，SSB)的配置信息。
在NR系统中，若终端在小区重选的过程中搜索到至少两个定义小区，终端如何快速重选定义小区是亟待解决的问题。
发明内容
本申请实施例提供了一种小区重选方法、装置及系统，可以解决在终端进行小区重选时，如何快速重选定义小区的问题。
根据本申请的第一方面，提供了一种小区重选方法，所述方法包括：
终端接收接入网设备发送的小区重选优先级信息，所述小区重选优先级信息包括第一定义小区的第一重选优先级和第二定义小区的第二重选优先级；所述第一定义小区的频点和所述第二定义小区的频点位于不同的宽带载波上，所述第一定义小区的频点与所述终端所处的第一服务小区的频点位于同一宽带载波上；
所述终端根据所述小区重选优先级信息重选服务小区，得到第二服务小区；
所述终端接入所述第二服务小区。
根据本申请的第二方面，提供了一种小区重选方法，所述方法包括：
接入网设备生成终端所处的第一服务小区的小区重选优先级信息，所述小区重选优先级信息包括第一定义小区的第一重选优先级和第二定义小区的第 二重选优先级；所述第一定义小区的频点和所述第二定义小区的频点位于不同的宽带载波上，所述第一定义小区的频点与所述第一服务小区的频点位于同一宽带载波上；
所述接入网设备向所述终端发送所述小区重选优先级信息。
根据本申请的第三方面，提供了一种小区重选装置，所述装置包括：
接收单元，用于接收接入网设备发送的小区重选优先级信息，所述小区重选优先级信息包括第一定义小区的第一重选优先级和第二定义小区的第二重选优先级；所述第一定义小区的频点和所述第二定义小区的频点位于不同的宽带载波上，所述第一定义小区的频点与所述终端所处的第一服务小区的频点位于同一宽带载波上；
重选单元，用于根据所述小区重选优先级信息重选服务小区，得到第二服务小区；
接入单元，用于接入所述第二服务小区。
根据本申请的第四方面，提供了一种小区重选装置，所述装置包括：
生成单元，用于生成终端所处的第一服务小区的小区重选优先级信息，所述小区重选优先级信息包括第一定义小区的第一重选优先级和第二定义小区的第二重选优先级；所述第一定义小区的频点和所述第二定义小区的频点位于不同的宽带载波上，所述第一定义小区的频点与所述第一服务小区的频点位于同一宽带载波上；
发送单元，用于向所述终端发送所述小区重选优先级信息。
根据本申请的第五方面，提供了一种终端，所述终端包括处理器和存储器，所述存储器存储有至少一条指令，所述至少一条指令用于被所述处理器执行以实现如上第一方面所述的小区重选方法。
根据本申请的第六方面，提供了一种接入网设备，所述接入网设备包括处理器和存储器，所述存储器存储有至少一条指令，所述至少一条指令用于被所述处理器执行以实现如上第二方面所述的小区重选方法。
根据本申请的第七方面，提供了一种计算机可读存储介质，所述存储介质存储有至少一条指令，所述至少一条指令用于被处理器执行以实现上第一方面所述的小区重选方法。
根据本申请的第八方面，提供了一种计算机可读存储介质，所述存储介质存储有至少一条指令，所述至少一条指令用于被处理器执行以实现上第二方面 所述的小区重选方法。
根据本申请的第九方面，提供了一种通信系统，所述系统包括：终端和接入网设备；
所述终端包括如第三方面所述的装置，所述接入网设备包括如第四方面所述的装置；或，所述终端是如第五方面所述的终端，所述接入网设备是如第六方面所述的接入网设备。
本申请实施例提供的技术方案的有益效果是：
通过接收接入网设备发送的小区重选优先级信息，且该小区重选优先级信息包括第一定义小区的第一重选优先级和第二定义小区的第二重选优先级；由于终端在频点属于不同的带宽载波的定义小区之间进行切换时耗时较大，而本实施例中终端根据小区重选优先级信息来重选定义小区时，可以优先选择频点与第一服务小区的频点属于同一带宽载波上的第一定义小区，因此，可以提高终端进行小区重选的效率。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请一个示意性实施例提供的通信网络的结构示意图；
图2是本申请一个示意性实施例提供的小区重选方法的流程图；
图3是本申请另一个示意性实施例提供的小区重选方法的流程图；
图4是本申请另一个示意性实施例提供的小区重选方法的流程图；
图5是本申请一个示意性实施例提供的宽带载波上的定义小区的示意图；
图6是本申请一个示意性实施例提供的小区重选装置的框图；
图7是本申请另一个示意性实施例提供的小区重选装置的框图；
图8是本申请另一个示意性实施例提供的终端的结构方框图；
图9是本申请另一个示意性实施例提供的接入网设备的结构方框图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请 实施方式作进一步地详细描述。
在本文提及的“模块”通常是指存储在存储器中的能够实现某些功能的程序或指令；在本文中提及的“单元”通常是指按照逻辑划分的功能性结构，该“单元”可以由纯硬件实现，或者，软硬件的结合实现。
在本文中提及的“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。本申请说明书以及权利要求书中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。
请参考图1，其示出了本申请一个实施例提供的移动通信系统的结构示意图。该移动通信系统可以是5G系统，又称NR系统。该移动通信系统包括：接入网设备120和终端140。
接入网设备120可以是基站。例如，基站可以是5G系统中采用集中分布式架构的基站(gNB)。当接入网设备120采用集中分布式架构时，通常包括集中单元(central unit，CU)和至少两个分布单元(distributed unit，DU)。集中单元中设置有分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层、无线链路层控制协议(Radio Link Control，RLC)层、媒体访问控制(Media Access Control，MAC)层的协议栈；分布单元中设置有物理(Physical，PHY)层协议栈，本申请实施例对接入网设备120的具体实现方式不加以限定。可选地，接入网设备还可以包括家庭基站(Home eNB，HeNB)、中继(Relay)、微微基站Pico等。接入网设备120还可以称为网络侧设备。广义的网络侧设备还包括位于接入网设备120上层的核心网设备(图中未示出)。
接入网设备120和终端140通过无线空口建立无线连接。可选地，该无线空口是基于第五代移动通信网络技术(5G)标准的无线空口，比如该无线空口是新空口；或者，该无线空口也可以是基于5G的更下一代移动通信网络技术标准的无线空口。
终端140可以是指向用户提供语音和/或数据连通性的设备。终端可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网进行通信，终端140可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计 算机。
需要说明的是，在图1所示的移动通信系统中，可以包括多个接入网设备120和/或多个终端140，图1中以示出一个接入网设备120和一个终端140来举例说明，但本实施例对此不作限定。
可选地，5G系统的应用场景包括但不限于：增强移动宽带(enhanced Mobile BroadBand，eMBB)、低时延高可靠通信(Ultra Reliable&Low Latency Communication，URLLC)、大规模机器类通信(massive Machine Type Communication，mMTC)。
其中，eMBB以用户获得多媒体内容、服务和数据为目标，其需求增长迅速。另一方面，由于eMBB可能部署在不同的场景中，便如室内，市区，农村等，其能力和需求的差别也比较大。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。
在5G系统早期部署时，完整的5G系统覆盖很难实现，所以典型的网络覆盖是广域的长期演进技术(Long Term Evolution，LTE)系统的覆盖和NR系统的孤岛覆盖模式。而且大量的LTE部署在6GHz以下，可用于5G的6GHz以下频谱很少。所以NR系统需要研究6GHz以上的频谱应用，而高频段覆盖有限、信号衰落快。同时为了保护移动运营商前期在LTE投资，提出了LTE系统和NR系统之间紧密的交互工作(tight interworking)的工作模式。
首先对本申请涉及的若干个名词进行简介：
同步信号/物理广播信道块(SS/PBCH block，SSB)：由主同步信号(Primary Synchronization Signal，PSS)、辅同步信号(Secondary Synchronization Signal，SSS)和物理广播信道(Physical Broadcast Channel，PBCH)共同构成一个SSB。SSB在时域上共占用4个符号，频域共占用240个子载波。当然，SSB也可以以其它方式占用时域和/或频域上的资源，本实施例对此不作限定。
宽带载波：在较宽的宽带上的载波。比如：在100MHz带宽上的载波、在400MHz的带宽上的载波等。
定义小区：以宽带载波上的频点(或称，频率)来定义的小区(cell)。
服务小区：终端当前驻留的定义小区。
请参考图2，其示出了本申请一个示例性实施例提供的小区重选方法的流程图。本实施例以该方法应用于图1所示的终端中来举例说明。该方法包括：
步骤201，终端接收接入网设备发送的小区重选优先级信息，该小区重选优先级信息包括第一定义小区的第一重选优先级和第二定义小区的第二重选优先级；第一定义小区的频点和第二定义小区的频点位于不同的宽带载波上，第一定义小区的频点与终端所处的第一服务小区的频点位于同一宽带载波上。
可选地，第一重选优先级高于第二重选优先级。
可选地，本申请中进行小区重选时的终端为处于空闲(idle)态的终端，该终端可以是刚刚开机；或者，从RRC_CONNECTED模式返回到RRC_IDLE模式的终端；或者，是重新进入服务小区的终端等。
可选地，小区重选优先级信息用于指示所述终端在进行小区重选时优先选择哪一个定义小区。
可选地，小区重选优先级信息是接入网设备通过系统消息发送的，示意性地，终端接收接入网设备以广播形式发送的系统消息，从而得到该系统消息中的小区重选优先级信息。
当然，本申请中，系统消息还可以包括其它信息，比如：SSB配置信息等。
步骤202，终端根据小区重选优先级信息重选服务小区，得到第二服务小区。
步骤203，终端接入第二服务小区。
综上所述，本实施例提供的小区重选方法，通过接收接入网设备发送的小区重选优先级信息，且该小区重选优先级信息包括第一定义小区的第一重选优先级和第二定义小区的第二重选优先级；由于终端在频点属于不同的带宽载波的定义小区之间进行切换时耗时较大，而本实施例中终端根据小区重选优先级信息来重选定义小区时，可以优先选择频点与第一服务小区的频点属于同一带宽载波上的第一定义小区，因此，可以提高终端进行小区重选的效率。
请参考图3，其示出了本申请一个示例性实施例提供的小区重选方法的流程图。本实施例以该方法应用于图1所示的接入网设备中来举例说明。该方法包括：
步骤301，接入网设备生成终端所处的第一服务小区的小区重选优先级信息，小区重选优先级信息包括第一定义小区的第一重选优先级和第二定义小区 的第二重选优先级；第一定义小区的频点和第二定义小区的频点位于不同的宽带载波上，第一定义小区的频点与第一服务小区的频点位于同一宽带载波上。
可选地，第一重选优先级高于第二重选优先级。
可选地，第一服务小区的小区重选优先级信息是指：向驻留在第一服务小区的终端发送的小区重选优先级信息。
步骤302，接入网设备向终端发送小区重选优先级信息。
可选地，小区重选优先级信息用于供终端在进行小区重选时确定重选后的第二服务小区。
综上所述，本实施例提供的小区重选方法，通过生成终端所处的第一服务小区的小区重选优先级信息，且该小区重选优先级信息包括第一定义小区的第一重选优先级和第二定义小区的第二重选优先级；由于终端在频点属于不同的带宽载波的定义小区之间进行切换时耗时较大，而本实施例中终端根据小区重选优先级信息来重选定义小区时，可以优先选择频点与第一服务小区的频点属于同一带宽载波上的第一定义小区，因此，可以提高终端进行小区重选的效率。
请参考图4，其示出了本申请一个示例性实施例提供的小区重选方法的流程图。本实施例以该方法应用于图1所示的移动通信系统中来举例说明。该方法包括：
步骤401，接入网设备生成终端所处的第一服务小区的小区重选优先级信息，小区重选优先级信息包括第一定义小区的第一重选优先级和第二定义小区的第二重选优先级；第一定义小区的频点和第二定义小区的频点位于不同的宽带载波上，第一定义小区的频点与第一服务小区的频点位于同一宽带载波上。
可选地，第一重选优先级高于第二重选优先级。
可选地，第一定义小区的频点与第二定义小区的频点相同，且与第一服务小区的频点不同。
可选地，第一定义小区的频点和第二定义小区的频点在终端的接收带宽中。由于终端的接收带宽越大，该终端的功耗越大，因此，示意性地，终端的接收带宽小于宽带载波的带宽。
可选地，第一定义小区与第一服务小区相邻，第二定义小区与第一服务小区相邻。
可选地，对于不同的第一服务小区，对应不同的小区重选优先级信息。
示意性地，参考图5所示的接入网设备侧的两个宽带载波501和502。在宽带载波501上分别定义了频点为f1、f2和f3的定义小区、在宽带载波502上分别定义了频点为f2、f3、f4和f5的定义小区。
示意性地，对于频点为宽带载波501上的f1的第一服务小区，频点为宽带载波501上的f2的第一定义小区的第一重选优先级高于频点为宽带载波502上的f2、f3、f4或者f5的第二定义小区的第二重选优先级。频点为宽带载波501上的f3的第一定义小区的第一重选优先级高于频点为宽带载波502上的f2、f3、f4或者f5的第二定义小区的第二重选优先级。
当然，当第一服务小区的频点为其它频点时，也需符合上述重选优先级特征，本实施例在此不再一一列举。
可选地，小区重选优先级信息的数量为至少两条；每条小区重选优先级信息包括物理小区标识(Physical Cell Identifier，PCI)、频点和重选优先级。
可选地，PCI用于标识一个定义小区；或者，PCI用于标识至少两个具有相同频点的定义小区。当PCI用于标识至少两个具有相同频点的定义小区时，该至少两个定义小区的重选优先级相同。
可选地，重选优先级通过等级指示标识来表示，示意性地，等级指示标识越小，重选优先级的优先程度越高。比如：等级指示标识为1表示的重选优先级高于等级指示标识为2表示的重选优先级高于等级指示标识为3表示的重选优先级。
示意性地，以图5所示的定义小区，且第一服务小区的频点为宽带载波501上的频点f1为例，小区重选优先级信息可以包括如下内容：
{PCI1，f2，1}
{PCI2，f2，2}
{all，f3，3}
对于第一条小区重选优先级信息：PCI1表示宽带载波501上频点为f2的定义小区的物理小区标识；1表示PCI1的重选优先级最高；对于第二条小区重选优先级信息：PCI2表示宽带载波502上频点为f2的定义小区的物理小区标识；2表示PCI1的重选优先级低于PCI1的重选优先级；对于第二条小区重选优先级信息：all表示宽带载波501和宽带载波502上所有频点为f3的定义小区的物理小区标识；3表示所有频点为f3的定义小区的重选优先级低于PCI2的重选优先级。
可选地，小区重选优先级信息还包括第三定义小区的第三重选优先级；第三定义小区的频点与第一服务小区的频点位于同一宽带载波上，该第三定义小区的负荷低于第一定义小区的负荷；第三重选优先级高于第一重选优先级。
由于终端的接收带宽小于宽带载波的带宽，因此，终端随机地分布在宽带载波定义的定义小区中。为了避免在同一个定义小区中驻留的终端的数量过多，即，避免该定义小区的负荷过大，本实施例中，对于频点位于同一带宽载波上的定义小区，还会按照定义小区的负荷来确定重选优先级。这样，可以保证各个定义小区的负荷比较均衡。
示意性地，以图5所示的定义小区，且第一服务小区的频点为宽带载波501上的频点f1为例，假设宽带载波501上的频点f3的定义小区的负荷低于宽带载波501上的频点f2的定义小区的负荷，则宽带载波501上的频点f3的定义小区的重选优先级高于宽带载波501上的频点f2的定义小区的重选优先级。
步骤402，接入网设备向终端发送小区重选优先级信息。
可选地，小区重选优先级信息携带在系统消息中，该系统消息还包括小区重选时的门限信息。门限信息用于供终端确定定义小区的信号质量是否达到最低质量要求。
可选地，接入网设备以广播形式发送系统消息。
步骤403，终端接收接入网设备发送的小区重选优先级信息，小区重选优先级信息包括第一定义小区的第一重选优先级和第二定义小区的第二重选优先级；第一定义小区的频点和第二定义小区的频点位于不同的宽带载波上，第一定义小区的频点与终端所处的第一服务小区的频点位于同一宽带载波上。
可选地，第一重选优先级高于第二重选优先级。
可选地，终端在第一服务小区驻留后，接收接入网设备发送的系统消息，该系统消息中携带有小区重选优先级信息。该系统消息还包括小区重选时的门限信息。
可选地，系统消息是接入网设备以广播形式发送的。
步骤404，终端对第一定义小区和第二定义小区进行信号测量，得到每个定义小区的信号质量。
可选地，第一定义小区与第一服务小区相邻，第二定义小区与第一服务小区相邻。
可选地，终端还对第一服务小区进行信号测量。
步骤405，若第一重选优先级为小区重选优先级信息中的最高重选优先级，在第一定义小区的信号质量和第二定义小区的信号质量均大于门限信息，且在第一服务小区的驻留时长大于或等于预设时长时，终端将第一定义小区确定为第二服务小区。
可选地，门限信息由接入网设备携带在系统消息中，该门限信息是接入网设备发送的。可选地，对于不同的第一服务小区，该门限信息可以相同；或者，也可以不同。本实施例不对门限信息的数值作限定，示意性地，门限信息的数值为1。
可选地，终端在得到各个定义小区的信号质量之后，可以在信号质量大于门限信息的定义小区中选择重选优先级最高的定义小区作为重选后的第二服务小区。此时，若第一定义小区的信号质量和第二定义小区的信号质量均大于门限信息，且第一重选优先级为小区重选优先级信息中的最高重选优先级，则将第一定义小区确定为第二服务小区。
可选地，若第一定义小区的信号质量小于或等于门限信息，则终端在除了第一重选优先级之外的重选优先级中，选择信号质量大于门限信息且重选优先级最高的定义小区，比如：第二定义小区作为第二服务小区。
示意性地，以图5所示的定义小区，且第一服务小区的频点为宽带载波501上的频点f1为例，假设终端接收到的重选优先级信息如下，则在PCI1的信号质量高于门限信息时，终端确定PCI1为第二服务小区。在PCI1的信号质量低于门限信息，且PCI2的信号质量高于门限信息时，终端确定PCI2为第二服务小区。在PCI1和PCI2的信号质量均低于门限信息，且存在一个频点为f3的定义小区的信号质量高于门限信息时，终端确定该定义小区为第二服务小区。
{PCI1，f2，1}
{PCI2，f2，2}
{all，f3，3}
步骤406，终端接入第二服务小区。
综上所述，本实施例提供的小区重选方法，通过生成终端所处的第一服务小区的小区重选优先级信息，且该小区重选优先级信息包括第一定义小区的第一重选优先级和第二定义小区的第二重选优先级；由于终端在频点属于不同的带宽载波的定义小区之间进行切换时耗时较大，而本实施例中终端根据小区重选优先级信息来重选定义小区时，可以优先选择频点与第一服务小区的频点属 于同一带宽载波上的第一定义小区，因此，可以提高终端进行小区重选的效率。
另外，由于终端的接收带宽小于宽带载波的带宽，因此，终端随机地分布在宽带载波定义的定义小区中。为了避免在同一个定义小区中驻留的终端的数量过多，即，避免该定义小区的负荷过大，本实施例中，对于频点位于同一带宽载波上的定义小区，还会按照定义小区的负荷来确定重选优先级。这样，可以保证各个定义小区的负荷比较均衡。
可选地，在步骤403之后，若小区重选优先级信息还包括第三定义小区的第三重选优先级，第三定义小区的频点与第一服务小区的频点位于同一宽带载波上；第三定义小区的负荷低于第一定义小区的负荷；第三重选优先级高于第一重选优先级；则终端接收到小区重选优先级信息之后，还会在第三定义小区的信号质量大于门限信息时，将第三定义小区确定为第二服务小区，然后接入该第二服务小区。
可选地，本申请中，接入网设备还可以结合负荷和重选效率两个方面来确定定义小区的重选优先级，比如：当第一定义小区(即频点与第一服务小区的频点位于同一宽带载波上的各个定义小区)上的负荷都很大，而第二定义小区(即频点与第一服务小区的频点位于不同宽带载波上的各个定义小区)上的负荷都很小时，该第二定义小区的第二重选优先级也可以高于第一定义小区的第一重选优先级；或者，具有相同频点的第一定义小区和第二定义小区，第一重选优先级也可以与第二定义小区的重选优先级相同。
以下为本申请的装置实施例，由于装置实施例与方法实施例存在对应关系，因此在装置实施例中未描述的技术细节，可以参考上述方法实施例中的相应描述。
请参考图6，其示出了本申请一个示例性实施例提供的小区重选装置的框图。该小区重选装置可以通过软件、硬件或者两者的结合，实现成为终端的全部或一部分。该装置包括：接收单元610、重选单元620和接入单元630。
接收单元610，用于接收接入网设备发送的小区重选优先级信息，所述小区重选优先级信息包括第一定义小区的第一重选优先级和第二定义小区的第二重选优先级；所述第一定义小区的频点和所述第二定义小区的频点位于不同 的宽带载波上，所述第一定义小区的频点与所述终端所处的第一服务小区的频点位于同一宽带载波上；
重选单元620，用于根据所述小区重选优先级信息重选服务小区，得到第二服务小区；
接入单元630，用于接入所述第二服务小区。
可选地，所述第一定义小区的频点与所述第二定义小区的频点相同，且与所述第一服务小区的频点不同。
可选地，所述小区重选优先级信息的数量为至少两条；
每条小区重选优先级信息包括物理小区标识PCI、频点和重选优先级。
可选地，所述PCI用于标识一个定义小区；或者，所述PCI用于标识至少两个具有相同频点的定义小区。
可选地，所述小区重选优先级信息携带在系统消息中，
所述系统消息还包括小区重选时的门限信息。
可选地，若所述第一重选优先级为所述小区重选优先级信息中的最高重选优先级，则所述重选单元620，还用于：
对所述第一定义小区和所述第二定义小区进行信号测量，得到每个定义小区的信号质量；在所述第一定义小区的信号质量和所述第二定义小区的信号质量均大于所述门限信息，且在所述第一服务小区的驻留时长大于或等于预设时长时，将所述第一定义小区确定为所述第二服务小区。
可选地，所述第一重选优先级高于所述第二重选优先级。
相关细节参考上述各个方法实施例中由终端执行的步骤。
请参考图7，其示出了本申请一个示例性实施例提供的小区重选装置的框图，该小区重选装置可以通过软件、硬件或者两者的结合，实现成为接入网设备的全部或一部分。该小区重选装置包括：生成单元710和发送单元720。
生成单元710，用于生成终端所处的第一服务小区的小区重选优先级信息，所述小区重选优先级信息包括第一定义小区的第一重选优先级和第二定义小区的第二重选优先级；所述第一定义小区的频点和所述第二定义小区的频点位于不同的宽带载波上，所述第一定义小区的频点与所述第一服务小区的频点位于同一宽带载波上；
发送单元720，用于向所述终端发送所述小区重选优先级信息。
可选地，所述第一定义小区的频点与所述第二定义小区的频点相同，且与所述第一服务小区的频点不同。
可选地，所述小区重选优先级信息的数量为至少两条；
每条小区重选优先级信息包括物理小区标识PCI、频点和重选优先级。
可选地，所述PCI用于标识一个定义小区；或者，所述PCI用于标识至少两个具有相同频点的定义小区。
可选地，所述小区重选优先级信息携带在系统消息中，
所述系统消息还包括小区重选时的门限信息。
可选地，所述小区重选优先级信息还包括第三定义小区的第三重选优先级；所述第三定义小区的频点与所述第一服务小区的频点位于同一宽带载波上，所述第三定义小区的负荷低于所述第一定义小区的负荷；所述第三重选优先级高于所述第一重选优先级。
可选地，所述第一重选优先级高于所述第二重选优先级。
相关细节参考上述各个方法实施例中由接入网设备执行的步骤。
请参考图8，其示出了本申请一个示例性实施例提供的终端的结构示意图，该终端包括：处理器101、接收器102、发射器103、存储器104和总线105。
处理器101包括一个或者一个以上处理核心，处理器101通过运行软件程序以及模块，从而执行各种功能应用以及信息处理。
接收器102和发射器103可以实现为一个通信组件，该通信组件可以是一块通信芯片。
存储器104通过总线105与处理器101相连。
存储器104可用于存储至少一个指令，处理器101用于执行该至少一个指令，以实现上述方法实施例中的终端执行的各个步骤。
此外，存储器104可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，易失性或非易失性存储设备包括但不限于：磁盘或光盘，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，静态随时存取存储器(SRAM)，只读存储器(ROM)，磁存储器，快闪存储器，可编程只读存储器(PROM)。
请参考图9，其示出了本申请一个示例性实施例提供的接入网设备的结构 示意图，该接入网设备包括：处理器111、接收器112、发射器113、存储器114和总线115。
处理器111包括一个或者一个以上处理核心，处理器111通过运行软件程序以及模块，从而执行各种功能应用以及信息处理。
接收器112和发射器113可以实现为一个通信组件，该通信组件可以是一块通信芯片。
存储器114通过总线115与处理器111相连。
存储器114可用于存储至少一个指令，处理器111用于执行该至少一个指令，以实现上述方法实施例中的接入网设备执行的各个步骤。
此外，存储器114可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，易失性或非易失性存储设备包括但不限于：磁盘或光盘，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，静态随时存取存储器(SRAM)，只读存储器(ROM)，磁存储器，快闪存储器，可编程只读存储器(PROM)。
本申请提供了一种计算机可读存储介质，所述存储介质中存储有至少一条指令，所述至少一条指令由所述处理器加载并执行以实现上述各个方法实施例提供的小区重选方法。
本申请还提供了一种计算机程序产品，当计算机程序产品在计算机上运行时，使得计算机执行上述各个方法实施例提供的小区重选方法。
本领域技术人员应该可以意识到，在上述一个或多个示例中，本申请实施例所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时，可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
以上所述仅为本申请的较佳实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (33)

  1. 一种小区重选方法，其特征在于，所述方法包括：
    终端接收接入网设备发送的小区重选优先级信息，所述小区重选优先级信息包括第一定义小区的第一重选优先级和第二定义小区的第二重选优先级；所述第一定义小区的频点和所述第二定义小区的频点位于不同的宽带载波上，所述第一定义小区的频点与所述终端所处的第一服务小区的频点位于同一宽带载波上；
    所述终端根据所述小区重选优先级信息重选服务小区，得到第二服务小区；
    所述终端接入所述第二服务小区。
  2. 根据权利要求1所述的方法，其特征在于，
    所述第一定义小区的频点与所述第二定义小区的频点相同，且与所述第一服务小区的频点不同。
  3. 根据权利要求1或2所述的方法，其特征在于，所述小区重选优先级信息的数量为至少两条；
    每条小区重选优先级信息包括物理小区标识PCI、频点和重选优先级。
  4. 根据权利要求3所述的方法，其特征在于，所述PCI用于标识一个定义小区；或者，所述PCI用于标识至少两个具有相同频点的定义小区。
  5. 根据权利要求1至4任一所述的方法，其特征在于，所述小区重选优先级信息携带在系统消息中，
    所述系统消息还包括小区重选时的门限信息。
  6. 根据权利要求5所述的方法，其特征在于，若所述第一重选优先级为所述小区重选优先级信息中的最高重选优先级，则所述终端根据所述小区重选优先级信息重选服务小区，得到第二服务小区，包括：
    对所述第一定义小区和所述第二定义小区进行信号测量，得到每个定义小区的信号质量；
    在所述第一定义小区的信号质量和所述第二定义小区的信号质量均大于所述门限信息，且在所述第一服务小区的驻留时长大于或等于预设时长时，将所述第一定义小区确定为所述第二服务小区。
  7. 根据权利要求1至6任一所述的方法，其特征在于，所述第一重选优先级高于所述第二重选优先级。
  8. 一种小区重选方法，其特征在于，所述方法包括：
    接入网设备生成终端所处的第一服务小区的小区重选优先级信息，所述小区重选优先级信息包括第一定义小区的第一重选优先级和第二定义小区的第二重选优先级；所述第一定义小区的频点和所述第二定义小区的频点位于不同的宽带载波上，所述第一定义小区的频点与所述第一服务小区的频点位于同一宽带载波上；
    所述接入网设备向所述终端发送所述小区重选优先级信息。
  9. 根据权利要求8所述的方法，其特征在于，
    所述第一定义小区的频点与所述第二定义小区的频点相同，且与所述第一服务小区的频点不同。
  10. 根据权利要求8或9所述的方法，其特征在于，所述小区重选优先级信息的数量为至少两条；
    每条小区重选优先级信息包括物理小区标识PCI、频点和重选优先级。
  11. 根据权利要求10所述的方法，其特征在于，所述PCI用于标识一个定义小区；或者，所述PCI用于标识至少两个具有相同频点的定义小区。
  12. 根据权利要求8至11任一所述的方法，其特征在于，所述小区重选优先级信息携带在系统消息中，
    所述系统消息还包括小区重选时的门限信息。
  13. 根据权利要求8至12任一所述的方法，其特征在于，所述小区重选优 先级信息还包括第三定义小区的第三重选优先级；
    所述第三定义小区的频点与所述第一服务小区的频点位于同一宽带载波上，所述第三定义小区的负荷低于所述第一定义小区的负荷；所述第三重选优先级高于所述第一重选优先级。
  14. 根据权利要求8至13任一所述的方法，其特征在于，所述第一重选优先级高于所述第二重选优先级。
  15. 一种小区重选装置，其特征在于，所述装置包括：
    接收单元，用于接收接入网设备发送的小区重选优先级信息，所述小区重选优先级信息包括第一定义小区的第一重选优先级和第二定义小区的第二重选优先级；所述第一定义小区的频点和所述第二定义小区的频点位于不同的宽带载波上，所述第一定义小区的频点与所述终端所处的第一服务小区的频点位于同一宽带载波上；
    重选单元，用于根据所述小区重选优先级信息重选服务小区，得到第二服务小区；
    接入单元，用于接入所述第二服务小区。
  16. 根据权利要求15所述的装置，其特征在于，
    所述第一定义小区的频点与所述第二定义小区的频点相同，且与所述第一服务小区的频点不同。
  17. 根据权利要求15或16所述的装置，其特征在于，所述小区重选优先级信息的数量为至少两条；
    每条小区重选优先级信息包括物理小区标识PCI、频点和重选优先级。
  18. 根据权利要求17所述的装置，其特征在于，所述PCI用于标识一个定义小区；或者，所述PCI用于标识至少两个具有相同频点的定义小区。
  19. 根据权利要求15至18任一所述的装置，其特征在于，所述小区重选优先级信息携带在系统消息中，
    所述系统消息还包括小区重选时的门限信息。
  20. 根据权利要求19所述的装置，其特征在于，若所述第一重选优先级为所述小区重选优先级信息中的最高重选优先级，则所述重选单元，还用于：
    对所述第一定义小区和所述第二定义小区进行信号测量，得到每个定义小区的信号质量；
    在所述第一定义小区的信号质量和所述第二定义小区的信号质量均大于所述门限信息，且在所述第一服务小区的驻留时长大于或等于预设时长时，将所述第一定义小区确定为所述第二服务小区。
  21. 根据权利要求15至20任一所述的装置，其特征在于，所述第一重选优先级高于所述第二重选优先级。
  22. 一种小区重选装置，其特征在于，所述装置包括：
    生成单元，用于生成终端所处的第一服务小区的小区重选优先级信息，所述小区重选优先级信息包括第一定义小区的第一重选优先级和第二定义小区的第二重选优先级；所述第一定义小区的频点和所述第二定义小区的频点位于不同的宽带载波上，所述第一定义小区的频点与所述第一服务小区的频点位于同一宽带载波上；
    发送单元，用于向所述终端发送所述小区重选优先级信息。
  23. 根据权利要求22所述的装置，其特征在于，
    所述第一定义小区的频点与所述第二定义小区的频点相同，且与所述第一服务小区的频点不同。
  24. 根据权利要求22或23所述的装置，其特征在于，所述小区重选优先级信息的数量为至少两条；
    每条小区重选优先级信息包括物理小区标识PCI、频点和重选优先级。
  25. 根据权利要求24所述的装置，其特征在于，所述PCI用于标识一个定义小区；或者，所述PCI用于标识至少两个具有相同频点的定义小区。
  26. 根据权利要求22至25任一所述的装置，其特征在于，所述小区重选优先级信息携带在系统消息中，
    所述系统消息还包括小区重选时的门限信息。
  27. 根据权利要求22至26任一所述的装置，其特征在于，所述小区重选优先级信息还包括第三定义小区的第三重选优先级；
    所述第三定义小区的频点与所述第一服务小区的频点位于同一宽带载波上，所述第三定义小区的负荷低于所述第一定义小区的负荷；所述第三重选优先级高于所述第一重选优先级。
  28. 根据权利要求22至27任一所述的装置，其特征在于，所述第一重选优先级高于所述第二重选优先级。
  29. 一种终端，其特征在于，所述终端包括处理器和存储器，所述存储器存储有至少一条指令，所述至少一条指令用于被所述处理器执行以实现上述权利要求1至7中任一所述的小区重选方法。
  30. 一种接入网设备，其特征在于，所述接入网设备包括处理器和存储器，所述存储器存储有至少一条指令，所述至少一条指令用于被所述处理器执行以实现上述权利要求8至14中任一所述的小区重选方法。
  31. 一种计算机可读存储介质，其特征在于，所述存储介质存储有至少一条指令，所述至少一条指令用于被处理器执行以实现上述权利要求1至7中任一所述的小区重选方法。
  32. 一种计算机可读存储介质，其特征在于，所述存储介质存储有至少一条指令，所述至少一条指令用于被处理器执行以实现上述权利要求8至14中任一所述的小区重选方法。
  33. 一种通信系统，其特征在于，所述系统包括：终端和接入网设备；
    所述终端包括如权利要求15至21任一所述的装置，所述接入网设备包括如权利要求22至28任一所述的装置；
    或；
    所述终端是如权利要求29所述的终端，所述接入网设备是如权利要求30所述的接入网设备。
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