WO2021128058A1 - 小区重选方法、终端设备和网络设备 - Google Patents

小区重选方法、终端设备和网络设备 Download PDF

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Publication number
WO2021128058A1
WO2021128058A1 PCT/CN2019/128250 CN2019128250W WO2021128058A1 WO 2021128058 A1 WO2021128058 A1 WO 2021128058A1 CN 2019128250 W CN2019128250 W CN 2019128250W WO 2021128058 A1 WO2021128058 A1 WO 2021128058A1
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WIPO (PCT)
Prior art keywords
cell
terminal device
type
synchronization signal
signal block
Prior art date
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PCT/CN2019/128250
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English (en)
French (fr)
Inventor
陈磊
李秉肇
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201980103168.6A priority Critical patent/CN114846851A/zh
Priority to CN202310210266.8A priority patent/CN116261191A/zh
Priority to EP19957495.5A priority patent/EP4068860A4/en
Priority to PCT/CN2019/128250 priority patent/WO2021128058A1/zh
Publication of WO2021128058A1 publication Critical patent/WO2021128058A1/zh
Priority to US17/848,781 priority patent/US20220330133A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • This application relates to the field of communications, and in particular to a cell reselection method, terminal equipment and network equipment.
  • the terminal equipment In the current 5G new radio access technology (NR) system, in order to ensure that the terminal equipment can reach a higher service rate and lower latency, the terminal equipment needs to have strong capabilities, such as multiple antennas and large support. Bandwidth and so on.
  • MTC machine type communication
  • MTC machine type communication
  • This application provides a cell reselection method, terminal equipment, and network equipment to prevent the terminal equipment from reselecting to a cell that does not support the bandwidth of the terminal equipment.
  • a method for cell reselection including: a terminal device receives first indication information sent by a network device, where the first indication information is used to indicate information about an initial bandwidth portion of a first cell, where the first cell is A neighboring cell of the second cell, the second cell is the cell where the terminal device currently resides; the terminal device determines whether to reselect to the first cell according to the type of the terminal device and the first indication information.
  • the terminal equipment can obtain the information of the initial bandwidth part of the first cell according to the first indication information sent by the network equipment, and the terminal equipment decides whether to use the information according to whether the information of the initial bandwidth part of the first cell matches the type of the terminal equipment. Reselecting to the first cell prevents the terminal device from reselecting to a cell that does not support the bandwidth of the terminal device.
  • the terminal device if the terminal device only decides whether to reselect to the first cell based on the signal quality of the first cell, it may cause the terminal device to reselect to the first cell for cell camping because it does not support the initial bandwidth part of the target cell.
  • the terminal device of the above technical solution of the present application can first determine whether the bandwidth of the first cell supports the type of terminal device before reselecting to the first cell, so as to avoid reselecting to an inappropriate cell , Thereby reducing the cell reselection time of the terminal equipment and the power consumption of the terminal equipment.
  • the terminal device determines whether to reselect to the first cell according to the type of the terminal device and the first indication information, including: when the terminal device detects that the first cell satisfies the reselection In the measurement criterion, if the type of the terminal equipment does not support the initial bandwidth part of the first cell, the terminal equipment does not measure the first cell; if the type of the terminal equipment supports the initial bandwidth part of the first cell, the terminal equipment measures the first cell.
  • cell reselection is a process for the terminal device to select a more suitable cell. If there are some higher priority or better signal cells in the neighboring cell of the cell where the terminal device currently resides, the protocol specifies the cell reselection measurement The criteria are used to determine which of these neighborhoods need to be measured. When the first cell satisfies the reselection measurement criterion and needs to be measured, the terminal device determines whether to measure the first cell according to the initial bandwidth of the first cell, so as to prevent the terminal device from measuring cells that are not supported by the bandwidth, thereby further reducing the terminal device’s Power consumption.
  • the terminal device determines whether to reselect to the first cell according to the first indication information, including: when the terminal device determines that the first cell is the target cell, then if the terminal device If the type of the terminal device does not support the initial bandwidth part of the first cell, the terminal device does not reselect to the first cell; if the type of the terminal device supports the initial bandwidth part of the first cell, the terminal device reselects from the second cell to the first cell .
  • the first cell is the target cell of the terminal device
  • the target cell refers to the cell that is most suitable for the terminal device to reside in among all neighboring cells that meet the above-mentioned cell reselection measurement criteria, for example, the cell with the strongest signal strength.
  • the terminal device decides whether to reselect to the first cell according to the initial bandwidth part of the first cell, so as to prevent the terminal device from reselecting to a cell that does not support the bandwidth, thereby reducing the power consumption of the terminal device.
  • the type of the terminal device is a first type terminal device or a second type terminal device, and the bandwidth capabilities of the first type terminal device and the second type terminal device are different.
  • the first terminal device may include a legacy NR terminal device
  • the second terminal device may include a lightweight NR terminal device.
  • a lightweight NR terminal device may also be referred to as an NR-light terminal device, and the bandwidth of the NR terminal device is greater than the bandwidth of the lightweight NR terminal device.
  • the bandwidth capabilities of the first type of terminal equipment and the second type of terminal equipment are different.
  • the first type of terminal equipment and the second type of terminal equipment can be based on their own bandwidth capabilities and whether the initial bandwidth information of the first cell is The matching determines whether to measure or reselect to the first cell.
  • the information of the initial bandwidth portion of the first cell includes one or more of the following information: the bandwidth width of the initial bandwidth portion of the first cell, the initial bandwidth of the first cell The type of part.
  • the first type of terminal equipment and the second type of terminal equipment can determine whether to measure or reselect to whether the device type matches the bandwidth width of the initial bandwidth portion of the first cell and/or the type of the initial bandwidth portion.
  • the first cell can determine whether to measure or reselect to whether the device type matches the bandwidth width of the initial bandwidth portion of the first cell and/or the type of the initial bandwidth portion.
  • the type of the initial bandwidth part of the first cell includes: the initial bandwidth part that supports the camping of the first type of terminal equipment, and the initial bandwidth part that supports the camping of the second type of terminal equipment.
  • the first type of terminal equipment and the second type of terminal equipment can determine whether to measure or reselect to the first cell according to whether their equipment type matches the type of the initial bandwidth part of the first cell.
  • a method for cell reselection includes: a network device sends first indication information to a terminal device, the first indication information is used to indicate information about an initial bandwidth portion of a first cell, where the first cell is a neighboring cell of the second cell, The second cell is the cell where the terminal device currently resides.
  • a method for cell reselection including: a network device sends first indication information to a terminal device, where the first indication information is used to indicate information about an initial bandwidth portion of a first cell, where the first cell is the first The neighboring cell of the second cell, the second cell is the cell where the terminal device currently resides.
  • the information of the initial bandwidth portion of the first cell includes one or more of the following information: the bandwidth width of the initial bandwidth portion of the first cell, the initial bandwidth of the first cell The type of part.
  • the type of the initial bandwidth part of the first cell includes: the initial bandwidth part that supports the camping of the first type of terminal equipment, and the initial bandwidth part that supports the camping of the second type of terminal equipment.
  • the bandwidth part and the initial bandwidth part that simultaneously supports the resident of the first type terminal device and the second type terminal device, wherein the bandwidth capabilities of the first type terminal device and the second type terminal device are different.
  • a method for initial access to a cell including: a terminal device receives a first synchronization signal block from a network device, the first synchronization signal block includes first indication information, and the first indication information is used to indicate the status of the first cell Cell type, the first cell is a cell defined by the second synchronization signal block; the first synchronization signal block includes second indication information, and the second indication information is used to indicate the location of the second synchronization signal block; where the first synchronization signal block is The synchronization signal block of the undefined cell, the second synchronization signal block is the synchronization signal block of the defined cell; the terminal device determines whether to search for the second synchronization signal at the location of the second synchronization signal block according to the type of the terminal device and the cell type of the first cell Piece.
  • the second synchronization signal block defines the first cell
  • the terminal device can obtain the cell type of the first cell and the location of the second synchronization signal block according to the first indication information and the second indication information sent by the network device.
  • the terminal device determines whether to search for the second synchronization signal block at the location of the second synchronization signal block according to whether the type of the terminal device matches the cell type of the first cell, so as to prevent the terminal device from searching for a cell that does not match its own type.
  • the terminal device searches for the cell at the location of the second synchronization signal block.
  • the terminal device can quickly determine whether the cell defined by the second synchronization signal block is suitable for camping, and then determine whether to search for the second synchronization signal, This not only reduces the time for the terminal device to search for a cell suitable for camping on, but also reduces the power consumption of the terminal device.
  • the type of the terminal device is a first type terminal device or a second type terminal device, and the bandwidth capabilities of the first type terminal device and the second type terminal device are different.
  • the first terminal device includes an NR terminal device
  • the second terminal device includes a lightweight NR terminal device.
  • the lightweight NR terminal device may also be called an NR-light terminal device, and the bandwidth of the NR terminal device is greater than that of the NR-light terminal device. The bandwidth of lightweight NR terminal equipment.
  • the bandwidth capabilities of the first type of terminal equipment and the second type of terminal equipment are different, and the second synchronization signal block defines the first cell.
  • the first type of terminal equipment and the second type of terminal equipment can be based on their own bandwidth capabilities. Whether it matches the cell type of the first cell, it is determined whether to search for the second synchronization signal block at the position of the second synchronization signal block, so as to quickly find a cell suitable for the terminal device to reside in and reduce the power consumption of the terminal device.
  • the cell types include: a cell that supports the camping of the first type of terminal equipment, a cell that supports the camping of the second type of terminal equipment, and the support of the first type of terminal equipment and the cell at the same time.
  • the second synchronization signal block defines the first cell.
  • the first type of terminal equipment and the second type of terminal equipment are based on the type of terminal equipment and the number of the first cell. Whether the cell type matches, it is determined whether to search for the second synchronization signal block at the position of the second synchronization signal block, so as to quickly find a cell suitable for the terminal device to reside in and reduce the power consumption of the terminal device.
  • the method before the terminal device receives the first synchronization signal block, the method further includes: the terminal device searches for the synchronization signal block in the frequency domain according to a preset step size, The synchronization signal block is the first synchronization signal block.
  • a method for initial access to a cell including: a network device sends a first synchronization signal block to a terminal device, the first synchronization signal block includes first indication information, and the first indication information is used to indicate the status of the first cell Cell type, the first cell is a cell defined by the second synchronization signal block; the first synchronization signal block includes second indication information, and the second indication information is used to indicate the location of the second synchronization signal block; where the first synchronization signal block is The synchronization signal block of the undefined cell, and the second synchronization signal block is the synchronization signal block of the defined cell.
  • the cell types include: a cell that supports a first type of terminal equipment to camp on, a cell that supports a second type of terminal equipment to camp on, and a cell that supports the first type of terminal equipment and The cell where the second type of terminal device resides, where the bandwidth capability of the first type of terminal device is different from that of the second type of terminal device.
  • a method for initial access to a cell including: a terminal device receives third indication information, the third indication information includes a first barring parameter and a second barring parameter, where the first barring parameter is used for the first type
  • the terminal equipment performs the initial access to the first cell, and the second prohibition parameter is used for the second type of terminal equipment to perform the initial access to the first cell.
  • the bandwidth capabilities of the first type of terminal equipment and the second type of terminal equipment are different; the terminal equipment is based on The type of the terminal device determines the use of the first forbidden parameter or the second forbidden parameter.
  • the terminal device can flexibly select the corresponding first cell prohibition parameter from the two sets of cell prohibition parameters according to its own type, and then determine whether to access the first cell based on the corresponding cell prohibition parameters.
  • a method for initial access to a cell including: a network device sends third indication information, the third indication information includes a first barring parameter and a second barring parameter, where the first barring parameter is used for the first type
  • the terminal device performs initial access to the first cell
  • the second prohibition parameter is used for the second type of terminal device to perform the initial access to the first cell, where the bandwidth capabilities of the first type of terminal device and the second type of terminal device are different.
  • a terminal device including: a transceiving unit, configured to receive first indication information sent by a network device, the first indication information being used to indicate information about an initial bandwidth portion of a first cell, where the first cell It is a neighboring cell of the second cell, and the second cell is the cell where the terminal device currently resides; the processing unit is configured to determine whether to reselect to the first cell according to the type of the terminal device and the first indication information.
  • the processing unit is specifically configured to: when it is detected that the first cell meets the reselection measurement criterion, if the type of the terminal device does not support the initial bandwidth part of the first cell , The first cell is not measured; if the type of the terminal device supports the initial bandwidth part of the first cell, the first cell is measured.
  • the processing unit is specifically configured to: when determining that the first cell is the target cell, if the type of the terminal device does not support the initial bandwidth portion of the first cell, control The terminal device does not reselect to the first cell; if the type of the terminal device supports the initial bandwidth part of the first cell, the terminal device is controlled to reselect from the second cell to the first cell.
  • the type of the terminal device is a first type terminal device or a second type terminal device, and the bandwidth capabilities of the first type terminal device and the second type terminal device are different.
  • the information of the initial bandwidth portion of the first cell includes one or more of the following information: the bandwidth width of the initial bandwidth portion of the first cell, and the initial bandwidth of the first cell The type of part.
  • the type of the initial bandwidth part of the first cell includes: the initial bandwidth part that supports the camping of the first type of terminal equipment, and the initial bandwidth part that supports the camping of the second type of terminal equipment.
  • a network device including: a transceiving unit, configured to send first indication information to a terminal device, where the first indication information is used to indicate information about an initial bandwidth portion of a first cell, where the first cell is The neighboring cell of the second cell, the second cell is the cell where the terminal device currently resides.
  • the information of the initial bandwidth part of the first cell includes one or more of the following information: the bandwidth width of the initial bandwidth part of the first cell, the initial bandwidth of the first cell The type of part.
  • the type of the initial bandwidth part of the first cell includes: the initial bandwidth part that supports the camping of the first type of terminal equipment, and the initial bandwidth part that supports the camping of the second type of terminal equipment.
  • the bandwidth part and the initial bandwidth part that simultaneously supports the resident of the first type terminal device and the second type terminal device, wherein the bandwidth capabilities of the first type terminal device and the second type terminal device are different.
  • a terminal device including: a transceiving unit, configured to receive a first synchronization signal block from a network device, the first synchronization signal block includes first indication information, and the first indication information is used to indicate the information of the first cell Cell type, the first cell is a cell defined by the second synchronization signal block; the first synchronization signal block includes second indication information, and the second indication information is used to indicate the location of the second synchronization signal block; where the first synchronization signal block is The synchronization signal block of the undefined cell, the second synchronization signal block is the synchronization signal block of the defined cell; the processing unit is used to determine whether to search for the second synchronization signal block according to the type of the terminal equipment and the cell type of the first cell Two synchronization signal blocks.
  • the type of the terminal device is a first-type terminal device or a second-type terminal device, and the bandwidth capabilities of the first-type terminal device and the second-type terminal device are different.
  • the cell types include: a cell that supports a first type of terminal equipment to camp on, a cell that supports a second type of terminal equipment to camp on, and a cell that supports both the first type of terminal equipment and the The cell where the second type of terminal device resides.
  • the processing unit searches for the synchronization signal block in the frequency domain according to a preset step size, and the synchronization signal block is the first synchronization signal block.
  • a network device including: a transceiving unit, configured to send a first synchronization signal block to a terminal device, the first synchronization signal block includes first indication information, and the first indication information is used to indicate the information of the first cell Cell type, the first cell is a cell defined by the second synchronization signal block; the first synchronization signal block includes second indication information, and the second indication information is used to indicate the location of the second synchronization signal block; where the first synchronization signal block is The synchronization signal block of the undefined cell, and the second synchronization signal block is the synchronization signal block of the defined cell.
  • the cell types include: a cell that supports a first type of terminal equipment to camp on, a cell that supports a second type of terminal equipment to camp on, and a cell that supports the first type of terminal equipment and The cell where the second type of terminal device resides, where the bandwidth capability of the first type of terminal device is different from that of the second type of terminal device.
  • a terminal device including: a transceiver unit, configured to receive third instruction information sent by a network device, the third instruction information including a first prohibition parameter and a second prohibition parameter, wherein the first prohibition parameter Used for the first type of terminal equipment to perform initial access to the first cell, the second prohibition parameter is used for the second type of terminal equipment to perform initial access to the first cell, the bandwidth capabilities of the first type of terminal equipment and the second type of terminal equipment Different; a processing unit for determining the use of the first forbidden parameter or the second forbidden parameter according to the type of the terminal device.
  • a network device including: a transceiving unit, configured to send third indication information to a terminal device, the third indication information including a first forbidden parameter and a second forbidden parameter, wherein the first forbidden parameter is used for Perform initial access to the first cell by the first type of terminal equipment, and the second prohibition parameter is used for the second type of terminal equipment to perform the initial access to the first cell, where the bandwidths of the first type of terminal equipment and the second type of terminal equipment Ability is different.
  • a communication device including a processor.
  • the processor is coupled with the memory, and can be used to execute instructions in the memory to implement any one of the above-mentioned first, third, or fifth aspects and any one of the first, third, or fifth aspects.
  • the communication device further includes a memory.
  • the communication device further includes a communication interface, and the processor is coupled with the communication interface.
  • the communication device is a terminal device.
  • the communication interface may be a transceiver, or an input/output interface.
  • the communication device is a chip configured in a terminal device.
  • the communication interface may be an input/output interface.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • a communication device including a processor.
  • the processor is coupled with the memory and can be used to execute instructions in the memory to implement any one of the foregoing second aspect, fourth aspect, or sixth aspect, and any one of the second aspect, fourth aspect, or sixth aspect.
  • the communication device further includes a memory.
  • the communication device further includes a communication interface, and the processor is coupled with the communication interface.
  • the communication device is a network device.
  • the communication interface may be a transceiver, or an input/output interface.
  • the communication device is a chip configured in a network device.
  • the communication interface may be an input/output interface.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • a processor including: an input circuit, an output circuit, and a processing circuit.
  • the processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes any one of the first aspect to the sixth aspect and the first aspect to the sixth aspect. The method in the way.
  • the above-mentioned processor can be one or more chips
  • the input circuit can be an input pin
  • the output circuit can be an output pin
  • the processing circuit can be a transistor, a gate circuit, a flip-flop, and various logic circuits, etc.
  • the input signal received by the input circuit may be received and input by, for example, but not limited to, a receiver
  • the signal output by the output circuit may be, for example, but not limited to, output to the transmitter and transmitted by the transmitter
  • the circuit can be the same circuit, which is used as an input circuit and an output circuit at different times.
  • the embodiments of the present application do not limit the specific implementation manners of the processor and various circuits.
  • a processing device including a processor and a memory.
  • the processor is used to read instructions stored in the memory, receive signals through a receiver, and transmit signals through a transmitter, so as to implement any one of the first to sixth aspects and any one of the possible implementation manners of the first to sixth aspects In the method.
  • processors there are one or more processors, and one or more memories.
  • the memory may be integrated with the processor, or the memory and the processor may be provided separately.
  • the memory can be a non-transitory (non-transitory) memory, such as a read only memory (ROM), which can be integrated with the processor on the same chip, or can be set in different On the chip, the embodiment of the present application does not limit the type of the memory and the setting mode of the memory and the processor.
  • ROM read only memory
  • sending instruction information may be a process of outputting instruction information from the processor
  • receiving capability information may be a process of receiving input capability information by the processor.
  • the data output by the processor can be output to the transmitter, and the input data received by the processor can come from the receiver.
  • the transmitter and receiver can be collectively referred to as a transceiver.
  • the processing device in the aforementioned sixteenth aspect may be one or more chips.
  • the processor in the processing device can be implemented by hardware or software.
  • the processor may be a logic circuit, integrated circuit, etc.; when implemented by software, the processor may be a general-purpose processor, which is implemented by reading software codes stored in the memory, and the memory may Integrated in the processor, can be located outside the processor, and exist independently.
  • a computer program product includes: a computer program (also called code, or instruction), which when the computer program is run, causes the computer to execute the first aspect to The sixth aspect and the method in any one of the possible implementation manners of the first aspect to the sixth aspect.
  • a computer program also called code, or instruction
  • a computer-readable storage medium stores a computer program (also called code, or instruction) when it runs on a computer, so that the computer executes the first Aspect to the sixth aspect and the method in any one of the possible implementation manners of the first aspect to the sixth aspect.
  • a computer program also called code, or instruction
  • the nineteenth aspect provides a communication system, including the terminal device in the seventh aspect, the ninth aspect, the eleventh aspect, or the thirteenth aspect, and the eighth aspect, the tenth aspect, the twelfth aspect, or the tenth aspect. Network equipment in the four areas.
  • Fig. 1 is a schematic diagram of a network architecture provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a possible deployment method of synchronization signal blocks and initial bandwidth parts in the lightweight NR system according to the embodiment of the present application.
  • FIG. 3 is a schematic diagram of another possible deployment mode of synchronization signal blocks and initial bandwidth parts in the lightweight NR system according to the embodiment of the present application.
  • FIG. 4 is a schematic interaction diagram of a method for initial access to a cell provided by an embodiment of the present application.
  • FIG. 5 is a schematic interaction diagram of a cell reselection method provided by an embodiment of the present application.
  • Fig. 6 is a schematic interaction diagram of another cell initial access method provided by an embodiment of the present application.
  • Fig. 7 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • FIG. 8 is a schematic block diagram of another communication device according to an embodiment of the application.
  • FIG. 9 is a schematic block diagram of a terminal device provided by an embodiment of the application.
  • FIG. 10 is a schematic block diagram of a network device provided by an embodiment of the application.
  • LTE long term evolution
  • FDD frequency division duplex
  • UMTS time division duplex
  • WiMAX worldwide interoperability for microwave access
  • 5G future 5th generation
  • NR new wireless
  • V2X can include vehicle-to-network (V2N), vehicle-to-vehicle (V2V), and vehicle-to-infrastructure (vehicle to infrastructure, V2I), vehicle to pedestrian (V2P), etc.
  • LTE-V long term evolution-vehicle
  • MTC machine type communication
  • MTC machine type communication
  • IoT Internet of Things
  • LTE-M Long Term Evolution-machine
  • M2M Machine to Machine
  • Fig. 1 shows a schematic diagram of a network architecture provided by an embodiment of the present application.
  • the communication system of the embodiment of the present application may include a network device and multiple terminal devices.
  • the network device can include one antenna or multiple antennas.
  • the network device may additionally include a transmitter chain and a receiver chain.
  • Those of ordinary skill in the art can understand that they can all include multiple components related to signal transmission and reception (such as processors, modulators, multiplexers, Demodulator, demultiplexer or antenna, etc.).
  • the network device can communicate with multiple terminal devices.
  • the terminal equipment in the embodiments of this application may also be referred to as: user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal, user unit, user station, Mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • the terminal device may be a device that provides voice/data connectivity to the user, for example, a handheld device with a wireless connection function, a vehicle-mounted device, and so on.
  • some examples of terminal devices are: mobile phones (mobile phones), tablet computers, notebook computers, handheld computers, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented Augmented reality (AR) equipment, wireless terminals in industrial control (industrial control), wireless terminals in self-driving (self-driving), wireless terminals in remote medical surgery, and smart grid (smart grid) Wireless terminals in transportation safety (transportation safety), wireless terminals in smart city (smart city), wireless terminals in smart home (smart home), cellular phones, cordless phones, session initiation protocols (session initiation) protocol, SIP) phones, wireless local loop (WLL) stations, personal digital assistants (personal digital assistants, PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, In-vehicle devices, wearable devices, terminal devices in
  • wearable devices can also be called wearable smart devices, which are the general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories.
  • Wearable devices are not only a kind of hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones.
  • the terminal device may also be a terminal device in the Internet of Things system.
  • IoT is an important part of the development of information technology in the future. Its main technical feature is to connect objects to the network through communication technology, thereby realizing people Machine interconnection, an intelligent network of interconnection of things.
  • the terminal equipment may also include sensors such as smart printers, train detectors, gas stations, etc.
  • the main functions include collecting data (part of the terminal equipment), receiving control information and downlink data from network equipment, and sending electromagnetic waves. , To transmit uplink data to network equipment.
  • the network equipment in the embodiments of the present application may be equipment used to communicate with terminal equipment.
  • the network equipment may be an evolved node B (eNB or eNodeB) in the LTE system, or a cloud wireless access network (
  • the wireless controller in the cloud radio access network (CRAN) scenario can also be a radio network controller (RNC), a base station controller (BSC), a home base station (for example, home evolved nodeB, or home nodeB (HNB), baseband unit (BBU), or the network device can be a relay station, access point, in-vehicle device, wearable device, network device in the future 5G network or network in the future evolved PLMN network
  • the equipment, etc. can be an access point (AP), a wireless relay node, a wireless backhaul node, a transmission point (TP), or a sending and receiving point in wireless local area networks (WLAN).
  • AP access point
  • TP transmission point
  • WLAN wireless local area networks
  • TRP transmission and reception point
  • TRP transmission and reception point
  • TRP transmission and reception point
  • NR new radio
  • An antenna panel or, may also be a network node constituting a gNB or transmission point, such as a baseband unit (BBU), or a distributed unit (DU), etc., which is not limited in the embodiment of the present application.
  • BBU baseband unit
  • DU distributed unit
  • the gNB may include a centralized unit (CU) and a DU.
  • the gNB may also include an active antenna unit (AAU for short).
  • CU implements some functions of gNB
  • DU implements some functions of gNB.
  • CU is responsible for processing non-real-time protocols and services, implementing radio resource control (RRC), and packet data convergence protocol (PDCP) The function of the layer.
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • the DU is responsible for processing the physical layer protocol and real-time services, and realizes the functions of the radio link control (RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer.
  • RLC radio link control
  • MAC media access control
  • PHY physical layer
  • the network device may be a device including one or more of the CU node, the DU node, and the AAU node.
  • the CU can be divided into network equipment in an access network (radio access network, RAN), and the CU can also be divided into network equipment in a core network (core network, CN), which is not limited in this application.
  • the network equipment provides services for the cell
  • the terminal equipment communicates with the cell through the transmission resources (for example, frequency domain resources, or spectrum resources) allocated by the network equipment
  • the cell may belong to a macro base station (for example, a macro eNB or a macro gNB, etc.) may also belong to the base station corresponding to a small cell.
  • the small cell here may include: metro cell, micro cell, pico cell , Femto cells, etc. These small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-rate data transmission services.
  • the network equipment may include base stations (gNB), such as macro stations, micro base stations, indoor hotspots, and relay nodes, etc.
  • gNB base stations
  • the function is to send radio waves to terminal equipment, and on the one hand, it realizes downlink data transmission. On the other hand, it sends scheduling information to control uplink transmission, and receives radio waves sent by terminal equipment, and receives uplink data transmission.
  • Synchronization signal block (synchronization signal and PBCH block, SSB), including primary/secondary synchronization signal and physical broadcast channel (physical broadcast channel, PBCH), which provides UE with cell downlink synchronization and basic configuration information of the cell.
  • the PBCH It will carry the master information block (MIB) of the cell.
  • the MIB will indicate whether there is a system information block type 1 (SIB1) and the location of SIB1.
  • SIB system information block type 1
  • the SSB occupies 4 symbols in the time domain and 20 PRBs in the frequency domain.
  • SSB can be divided into cell-defined SSB and non-cell-defined SSB.
  • Cell-defined SSB means that this SSB defines a cell.
  • MIB indicates the existence of SIB1
  • non-cell-defined SSB means that this SSB does not define a cell.
  • MIB in non-cell-defined SSB indicates that there is no SIB1
  • the bits used to indicate the position of SIB1 may be used to indicate the position of the next cell-defined SSB.
  • SSB has a certain pattern in the frequency domain, that is, at a certain interval, an SSB may appear. After the UE is turned on, it can search for cells at this interval. If it is found that an SSB is a cell-defined SSB, it can be considered as a cell where it can reside.
  • Bandwidth part In the fifth-generation wireless access system standard NR physical layer, the unit of downlink frequency domain resources is resource block (RB).
  • RB resource block
  • an important aspect required for the evolution of mobile communications to the future 5G system or NR system is to support large bandwidth.
  • the bandwidth supported by the UE may be less than the carrier bandwidth.
  • the maximum carrier bandwidth may be 400 megahertz (MHz)
  • the radio frequency bandwidth capability of the UE may be 20MHz, 50MHz, or 100MHz.
  • the radio frequency bandwidth capabilities of different UEs may be the same or different.
  • a BWP includes several consecutive RBs in the frequency domain.
  • the terminal device transmits on its own BWP.
  • the BWP can be a group of continuous frequency domain resources on the carrier.
  • the frequency domain resources that can be occupied by different BWPs may partially overlap or not overlap each other.
  • Part of the spectrum is allocated to the UE on a broadband to adapt to the bandwidth that the UE can support, and multiple BWPs with different bandwidths are configured for the UE to achieve flexible scheduling of the UE and energy saving of the UE.
  • Initial BWP cell-defined The bandwidth of the location where SIB1 is indicated by the MIB broadcast in the SSB is defined as Initial BWP.
  • the UE can obtain SIB1 and other system information (OSI), and can monitor paging.
  • OSI system information
  • the bandwidth of Initial BWP can be configured as 5M, 10M, or 20M.
  • Active BWP When a UE arrives with a service, the base station will schedule it from the Initial BWP to a BWP with a bandwidth that matches its service. This BWP is called Active BWP.
  • Active BWP is configured with Type0A and Type2 physical downlink control channels (physical downlink control channel, PDCCH) common search space (CSS), that is, the UE can receive paging on the current Active BWP And OSI.
  • PDCCH physical downlink control channel
  • the MIB contains the following parameters:
  • demodulation reference signal demodulation reference signal
  • -pdcch-ConfigSIB1 8 bits, indicating the location of SIB1 (Initial BWP), if SSB is non-cell-defined, it can indicate the location of CD-SSB;
  • Cell barring is a way for the network to control the load. When the network load is heavy, the network can control the UE not to camp in a certain cell.
  • the parameters include two: cellBarred and intraFreqReselection. After the UE reads the MIB of a certain cell, if the cell is found through cellBarred, the UE cannot camp on the current cell. If intraFreqReselection is set to NotAllowed, it means that the UE cannot reselect to this frequency. Other communities. If intraFreqReselection is set to Allowed, it means that the UE can reselect to other cells on this frequency.
  • Cell reservation is a means for the network to control the purpose of cell use.
  • the network sets the current cell as a cell reserved for other purposes, even if the cellBarred of the current cell does not prohibit camping on the current cell, the UE cannot stay in the current cell. Community.
  • Figures 2 and 3 are schematic diagrams of possible deployment methods for the synchronization signal block SSB and the initial bandwidth part Initial BWP in the lightweight NR system according to the embodiment of the present application.
  • the lightweight NR system refers to an NR system designed for terminal devices with low hardware capabilities.
  • the lightweight NR system can ensure that terminal devices with low hardware capabilities can work normally.
  • the lightweight NR system can also be used by existing NR systems.
  • the realization of terminal equipment that serves low hardware capabilities can be independent of the existing NR system, or it can be an enhancement to the existing NR system.
  • a lightweight NR cell refers to a cell that provides services for terminal devices with low hardware capabilities.
  • a cell-defined-SSB only maps an Initial BWP.
  • Either a normal NR cell or a lightweight NR cell is defined.
  • a normal NR cell can also be called a legacy NR cell or an NR cell, and a lightweight NR cell can also be called an NR-light cell.
  • the name of the cell type is not limited in this application. The difference between the two is that the relevant configuration is different. Generally speaking, the bandwidth of the Initial BWP of the NR-light cell is narrower than that of the NR cell.
  • the initial BWP bandwidth of the NR-light cell is relatively narrow.
  • terminal devices that can only reside in the NR-light cell it can be called a lightweight NR terminal device or NR-light terminal device; and the initial BWP bandwidth of the NR cell Relatively wide, terminal equipment that can reside in an NR cell is called legacy NR terminal equipment or NR terminal equipment.
  • the bandwidth of the NR terminal device is greater than the bandwidth of the NR-light terminal device.
  • the legacy NR terminal device can choose to camp in the NR-light cell in addition to the NR cell.
  • SSB1 maps the initial BWP available for NR terminal equipment, that is, defines an NR cell
  • SSB2 maps the initial BWP available for NR-light terminal equipment, that is, defines A NR-light cell has been created.
  • SSB maps two Initial BWPs, one of which is the initial BWP available for NR terminal equipment, and the other is the initial BWP available for NR-light terminal equipment. That is, the SSB defines a cell with both NR and NR-light, and the cell can support two types of terminal equipment.
  • the terminal device searches for the cell-defined-SSB in the frequency domain according to a certain step size. If an SSB is a non-cell-defined-SSB, then in its MIB, only the location of the next cell-defined-SSB is indicated, and it does not consider whether the cell defined by the next cell-defined-SSB is suitable for terminal equipment to camp on. stay. This may increase the time for the terminal device to search for a suitable cell and increase power consumption at the same time.
  • the embodiment of the present application optimizes the cell search mechanism of the terminal device, so that the NR-light terminal device can effectively find a suitable cell to camp on, save search time, and reduce the power consumption of the terminal device.
  • FIG. 4 is a schematic interaction diagram of a method for initial access to a cell provided by an embodiment of the present application.
  • the terminal device in FIG. 4 may be the terminal device 120 or 130 in FIG. 1, and the network device may be the network device 110 in FIG. 1.
  • S410 The terminal device receives the first SSB sent by the network device.
  • the network device sends the first SSB to the terminal device at the location of the first SSB.
  • the first SSB is the SSB searched in the frequency domain according to a preset step size after the terminal device is turned on.
  • the first SSB may be a non-cell-defined-SSB, and the first SSB includes first indication information and second indication information.
  • the second indication information is used to indicate the location of the next cell-defined-SSB of the first synchronization signal block, that is, the location of the second synchronization signal block, and the first indication information is used to indicate the location of the first cell defined by the second synchronization signal block.
  • Cell type is used to indicate the location of the next cell-defined-SSB of the first synchronization signal block.
  • the terminal device may obtain the first indication information and the second indication information from the PBCH of the first SSB.
  • the terminal device may obtain the first indication information and the second indication information from the MIB in the PBCH of the first SSB.
  • the cell type of the first cell includes: a cell that supports the camping of the first type of terminal equipment, a cell that supports the camping of the second type of terminal equipment, or the simultaneous camping of the first type of terminal equipment and the second type of terminal equipment Of the cell.
  • the following cells that support the camping of the first type of terminal equipment include legacy NR cells
  • the cells that support the camping of the second type of terminal equipment include NR-light cells
  • the first type of terminal equipment and the second type of terminal equipment are supported to camp at the same time.
  • the cell of including the cell with both NR and NR-light as an example, and vice versa.
  • the above-mentioned first type of terminal equipment and the second type of terminal equipment have different hardware capabilities. Specifically, they may include different supported bandwidths, different numbers of antennas, different supported maximum modulation orders, different supported maximum subcarrier intervals, and signal processing capabilities. Not equal.
  • the following describes the case where the hardware capability of the first type terminal device is greater than the capability of the second terminal device, and vice versa.
  • the first type of terminal equipment includes legacy NR terminal equipment
  • the second type of terminal includes NR-light terminal equipment
  • the bandwidth of the legacy NR terminal equipment is greater than the bandwidth of the NR-light terminal equipment.
  • the first indication information can be defined by redefining the two bits of the cell barring parameter in the first synchronization signal block (that is, cellBarred and intraFreqReselection). Bit) or a bit of SubCarrierSpacingCommon to indicate the cell type of the cell defined by the second synchronization signal block cell-defined SSB. Specifically, any one or more of the above three bits may be used to indicate the cell type of the cell defined by the cell-defined SSB. The specific method for reinterpreting these three bits is not limited in this application.
  • the terminal device determines, according to the type of the terminal device and the first indication information, whether to search for the second synchronization signal block at the position of the second synchronization signal block.
  • the terminal device is a second type of terminal device, such as an NR-light terminal device
  • the first cell is a cell that supports the second type of terminal device to reside in, such as an NR-light cell, which means that the type of the terminal device matches the type of the first cell , That is, the terminal device can reside in the first cell, then the terminal device goes to the position of the second synchronization signal block to search for the second synchronization signal block.
  • the terminal device is a cell that supports the camping of the first type of terminal device, for example, an NR cell
  • the terminal device also searches for the next SSB according to the previously preset step size.
  • the terminal device is a terminal device of the first type, such as a legacy NR terminal device
  • the first cell is a cell that supports the camping of the terminal device of the first type, such as an NR cell, which means that the type of the terminal device matches the type of the first cell, that is, The terminal device can reside in the first cell, then the terminal device goes to the position of the second synchronization signal block to search for the second synchronization signal block.
  • the terminal equipment will also search for the next SSB according to the step size specified in the previous protocol.
  • the legacy NR terminal equipment can also reside in a cell that supports the camping of the second type of terminal equipment (for example: NR-light cell)
  • the legacy NR terminal equipment can also directly Go to the position of the second synchronization signal block to search for the second synchronization information block, regardless of whether the cell defined by the second synchronization information block is an NR cell or not.
  • the above technical solution indicates the type of the cell defined by the next cell-defined-SSB in the non-cell-defined-SSB, so that the NR-light terminal device can quickly determine whether the cell is suitable for camping on itself, thereby reducing NR-light
  • the cell search time saves the power consumption of the terminal equipment.
  • the terminal device After the terminal device successfully resides in a cell, it will continuously monitor the signal quality of the neighboring cell and the current cell in the idle mode for cell reselection, so as to select the best cell to provide the service signal for the terminal device.
  • the terminal device When a terminal device is turned on or a radio link failure occurs, the terminal device will perform a cell search process and select a suitable cell to camp on as soon as possible. This process is called "cell selection”.
  • the terminal equipment will read the system information of the cell and obtain parameters such as Qrxlevmeas, Qrxlevmin and Qrxlevminoffset.
  • the terminal equipment evaluates whether the cell is a suitable cell according to the S criterion. Once a suitable cell is found, that is, it satisfies S Standard cell, the cell selection process is completed. If the cell is not a suitable cell, the terminal device continues to search until it finds a suitable cell and camps on it.
  • Srxlev>0 that is, if the S value of a cell is greater than 0, it means that the cell is a suitable cell, that is, a cell suitable for camping.
  • the calculation formula of Srxlev is:
  • Srxlev calculated cell selection reception level value
  • Qrxlevmeas The received signal strength value measured by the terminal device, this value is the measured reference signal receiving power (RSRP);
  • Qrxlevmin The minimum received signal strength value required by the cell
  • Pcompensation (PEMAX-PUMAX) or the larger value of 0, where PEMAX is the maximum allowable transmission power set by the system when the terminal equipment accesses the cell; PUMAX refers to the maximum output power specified by the terminal equipment level.
  • Qrxlevminoffset This parameter is only available when the terminal device normally resides in a virtual private mobile network (VPMN), and periodically searches for a high-priority public land mobile network (PLMN) for cell selection evaluation It is valid only when it is time. This parameter biases Qrxlevmin to a certain extent.
  • VPMN virtual private mobile network
  • PLMN public land mobile network
  • the terminal device After the terminal device camps in a cell, as the terminal device moves, the terminal device may need to be changed to another cell with a higher priority or better signal to camp on. This is the cell reselection process.
  • Cell selection is a process of finding a suitable cell as soon as possible, and cell reselection is a process of selecting a more suitable cell.
  • the agreement specifies the cell reselection measurement criteria:
  • the terminal equipment For the frequency layer or system with a higher priority than the cell where it resides, the terminal equipment always measures it;
  • the terminal device starts the measurement of the same frequency/same priority cell, where Sintrasearch is the start threshold of the same frequency measurement;
  • the terminal device starts the measurement of the low priority frequency and system, where Snonintrasearch is the start threshold for inter-frequency/different system measurement;
  • the terminal equipment After the measurement, the terminal equipment will determine whether to perform cell reselection to a new cell.
  • the reselection criteria are as follows:
  • High-priority frequency or system reselection criteria the terminal device stays in the original cell for more than 1 second, and the target frequency cell Srxlev>Threshx-high for a certain period of time, where Threshx-high refers to the current service The threshold when the carrier frequency is reselected to the frequency with high priority;
  • Reselection criteria for low-priority frequencies or systems the terminal device stays in the original cell for more than 1 second and does not have a high-priority (or equivalent priority) frequency that meets the re-selection requirements, and the Srxlev ⁇ Threshserving of the camped cell -low, and lasts for a certain period of time, where Threshx-low refers to the threshold when reselecting from the current service carrier frequency to a frequency with a lower priority;
  • Reselection criteria of the same priority frequency or system the terminal device stays in the original cell for more than 1 second and the cell without a high priority frequency meets the reselection requirements, and the cell is reselected to the same priority frequency based on the same frequency Ranking standard for cell reselection.
  • the ranking criteria for co-frequency cell reselection are defined as follows, Rs is the ranking value of the current camping cell, and Rn is the ranking value of the neighboring cell:
  • Qhyst Hysteresis value, used to prevent ping-pong reselection
  • Qmeas_s The received signal strength value of the camping cell measured by the terminal equipment
  • Qoffset For the same frequency, when Qoffsets_n is valid, the value is Qoffsets_n, otherwise the value is 0; for different frequencies, when Qoffsets_n is valid, the value is Qoffsets_n+Qoffsetfrequency, otherwise the value is Qoffsetfrequency,;
  • Qoffset_temp can indicate the amount of deviation.
  • the deviation amount may be, for example, a deviation amount added to a cell after a terminal device fails to establish an RRC connection on a cell, which is broadcast by the network.
  • the terminal equipment will sort all the cells that meet the cell selection S criterion by the ranking value. When reselecting, it is not simply reselecting to the best ranked cell, but finding the highest ranking value during the ranking, which is within a certain range ( For example, x dB, where x is configurable, the cells are considered to be similar cells and the cell with the highest final ranking value is also called the target cell.
  • the system message of the currently camped cell will broadcast the required configuration parameters of the current camped cell and neighboring cells, so that the terminal device can calculate parameters such as Rs and Rn.
  • Qmeas is the received signal strength value of the cell measured by the terminal equipment.
  • N beams where the signal strength of each cell is higher than the threshold can be used to generate cell quality, and the cell quality is filtered through layer 3 as Qmeas.
  • the threshold and N are notified to the terminal equipment in the broadcast message, and N is an integer greater than or equal to 1. Among them, beams above the threshold are considered good beams.
  • the target cell is determined only based on the signal quality of the cell, without considering that NR-light terminal equipment may not have large bandwidth capabilities, which may cause the terminal equipment to not support the Initial BWP of the target cell Therefore, the target cell cannot be reselected, which may cause a waste of resources and increase the power consumption of the terminal device.
  • the embodiment of the application optimizes the reselection mechanism of NR-light cells, so that NR-light terminal equipment avoids measuring or reselecting to a cell that does not support bandwidth, saves signaling overhead, and reduces power consumption of terminal equipment. .
  • FIG. 5 is a schematic interaction diagram of a cell reselection method provided by an embodiment of the present application.
  • the terminal device in FIG. 5 may be the terminal device 120 or 130 in FIG. 1, and the network device may be the network device 110 in FIG. 1.
  • S510 The terminal device receives the first indication information sent by the network device.
  • the network device sends the first indication information to the terminal device.
  • the terminal device After the terminal device resides in the second cell, it continues to receive system information related to the second cell reselection sent by the network device.
  • the system information includes first indication information, which is used to indicate the Initial BWP bandwidth of the first cell
  • the first cell is the neighboring cell of the second cell.
  • the information of the Initial BWP bandwidth of the first cell includes the width of the Initial BWP bandwidth of the first cell and/or the type of the Initial BWP bandwidth of the first cell.
  • the first indication information includes the parameter Perfrequency/cell, and Perfrequency/cell is used to indicate the information of the Initial BWP bandwidth of the first cell.
  • the first indication information is used to indicate the width of the Initial BWP bandwidth of the first cell, where the width of the Initial BWP bandwidth is the width of CORESET#0 in the MIB, and the configuration of CORESET#0 is indicated by the parameter pdcch-ConfigSIB1 in the MIB.
  • the system information related to the second cell reselection includes the initial BWP bandwidth width of the first cell and can also indicate other multiple Initial The width of the BWP bandwidth.
  • the first indication information may also be used to indicate the type of Initial BWP bandwidth of the first cell.
  • the Initial BWP bandwidth type includes: Initial BWP bandwidth supported by the first type of terminal device and support for the second type of terminal device The initial BWP bandwidth for camping and the Initial BWP bandwidth that supports both the first type of terminal device and the second type of terminal device.
  • the Initial BWP bandwidth that supports the camping of the first type of terminal equipment includes the Initial BWP bandwidth of the legacy NR cell
  • the Initial BWP bandwidth that supports the camping of the second type of terminal equipment includes the Initial BWP bandwidth of the NR-light cell, and it supports the first type of terminal.
  • the Initial BWP bandwidth where the device and the second type terminal device reside at the same time includes the Initial BWP bandwidth of a cell with both NR and NR-light.
  • the above-mentioned first type terminal device and the second type terminal device may be terminal devices with different hardware capabilities. Specifically, it may include different supported bandwidths, different numbers of antennas, different supported maximum modulation orders, different supported maximum sub-carrier intervals, and different signal processing capabilities. Take the example that the hardware capability of the first type terminal device is greater than the capability of the second terminal device, and vice versa.
  • the first type of terminal equipment includes legacy NR terminal equipment
  • the second type of terminal includes NR-light terminal equipment
  • the bandwidth of the NR terminal equipment is greater than the bandwidth of the NR-light terminal equipment.
  • the system message related to the second cell reselection can indicate the Initial BWP bandwidth type of the first cell, and can also indicate other multiple types. Bandwidth type. In order to save the overhead of system information, it is possible to indicate only the type of Initial BWP bandwidth of the cell in which the second-type terminal device resides, for example, only the Initial BWP bandwidth of the NR-light cell.
  • the first indication information may also be used to indicate the Initial BWP bandwidth re-indicated in the SIB1 of the first cell.
  • the first indication information may further include: carrier width configuration of the first cell, and frequency band information of the first cell.
  • the carrier width configuration may include the carrier start position and bandwidth of the first cell under different subcarrier intervals.
  • S520 The terminal device determines whether to reselect to the first cell according to the type of the terminal device and the first indication information.
  • the terminal device before the terminal device performs cell reselection, the terminal device first determines which cells in the neighboring cells of the second cell need to be measured according to the cell reselection measurement criterion.
  • the terminal device will determine whether to measure the first cell according to the type of the terminal device and the initial BWP bandwidth information of the first cell indicated by the first indication information.
  • the first cell is measured; if the type of the terminal device does not support the Initial BWP bandwidth of the first cell, the first cell is not measured. In this way, the first cell will not be measured in the end. Will become the target cell for cell reselection.
  • the first indication information includes the carrier width configuration of the first cell and/or the frequency band information of the first cell
  • the terminal device determines the target cell for the terminal device to reselect according to the existing cell reselection criterion.
  • the terminal device determines whether to support the Initial BWP bandwidth of the target cell according to the type of the terminal device and the Initial BWP bandwidth information of the first cell indicated by the first indication information.
  • the type of the terminal device supports the Initial BWP bandwidth of the first cell, it is reselected to the first cell; if the type of the terminal device does not support the Initial BWP bandwidth of the first cell, the first cell is not measured.
  • the terminal device when the first indication information includes the carrier width configuration of the first cell and/or the frequency band information of the first cell, it is also necessary to determine whether the terminal device supports the carrier width of the first cell and/or the frequency band information of the first cell. If the terminal device supports all the information about the first cell in the first indication information, the terminal device will reselect to the first cell; otherwise, it will not reselect to the first cell.
  • the initial BWP bandwidth information of the neighboring cell is carried in the first indication information, so that the NR-light terminal device avoids measuring or reselecting to a cell whose bandwidth is not supported by the NR-light terminal device, thereby reducing the power consumption of the terminal device.
  • the MIB contains the parameter cell barring, but currently there is only one set of cell barring parameters in the MIB, which only applies to the scenario shown in Figure 2, but for the scenario shown in Figure 3, the cell-defined-SSB defines the cell It supports both NR cell and NR-light cell, and the current cell barring parameter cannot indicate the barring function of the two cell access at the same time.
  • this application proposes a method that can configure cell barring parameters more flexibly for the scenario shown in FIG. 3.
  • Fig. 6 is a schematic interaction diagram of another cell initial access method provided by an embodiment of the present application.
  • the terminal device receives third indication information sent by the network device.
  • the terminal device in FIG. 6 may be the terminal device 120 or 130 in FIG. 1, and the network device may be the network device 110 in FIG. 1.
  • the network device sends the third instruction information to the terminal device.
  • the terminal device may obtain the third indication information from the MIB of the first cell sent by the network device.
  • the third indication information includes a first barring parameter and a second barring parameter.
  • the first barring parameter is used for the first type of terminal equipment to perform initial access to the first cell
  • the second barring parameter is used for the second type of terminal equipment to perform the first cell. Initial access.
  • the above-mentioned first type of terminal equipment and the second type of terminal equipment are terminal equipments with different hardware capabilities. Specifically, they may include different supported bandwidths, different numbers of antennas, different supported maximum modulation orders, and different supported maximum subcarrier intervals.
  • the signal processing capabilities are different, and the following description will be given by taking the hardware capabilities of the first type of terminal device greater than the capabilities of the second terminal device as an example, and vice versa.
  • the first type of terminal equipment includes legacy NR terminal equipment
  • the second type of terminal includes NR-light terminal equipment
  • the bandwidth of the NR terminal equipment is greater than the bandwidth of the NR-light terminal equipment.
  • the first barring parameter and the second barring parameter respectively include a set of cell barring parameters.
  • Cell barring is a way for the network to control the load. When the network load is heavy, the network can control the terminal device not to reside in a certain cell. Barring includes two parameters: cellBarred and intraFreqReselection. After the terminal device reads the MIB of a certain cell, if the cell is found to be barred through cellBarred, the terminal device cannot camp in the current cell. If intraFreqReselection is set to NotAllowed, it means that the terminal device cannot be reselected here either. Other cells on the frequency. If intraFreqReselection is set to Allowed, it means that the terminal device can reselect to other cells on this frequency.
  • the third indication information includes first reservation indication information or second reservation indication information or third reservation indication information.
  • the first reservation indication information is used to indicate whether the first cell is a cell reserved by the network operator for other purposes. If the first reservation indication information is true, it means that the terminal device cannot camp on the first cell; the second reservation The indication information indicates that the first cell is a cell reservation indication set for the first type of terminal equipment. If the second reservation indication information is true, it means that the first type of terminal equipment cannot camp in the first cell; the third reservation indication information Indicate that the first cell is a cell reservation indication set for the second type of terminal device. If the third reservation indication information is true, it means that the second type of terminal device cannot camp on the first cell.
  • the third indication information may be indicated by cell-defined-SSB indicating the location of the first cell.
  • the third indication message may be indicated by the SIB1 of the first cell.
  • the third indication information may be indicated by other SIBs of the first cell.
  • S620 The terminal device determines to use the first prohibition parameter or the second prohibition parameter according to the terminal device type and the third indication information.
  • the terminal device decides to use the first prohibition parameter or the second prohibition parameter in the third indication information according to whether it is the first type terminal device or the second type terminal device.
  • the terminal device is a terminal device of the first type, use the first forbidden parameter to determine whether it can camp in the first cell or a cell with the same frequency as the first cell;
  • the second prohibition parameter is used to determine whether it can camp in the first cell or a cell with the same frequency as the first cell.
  • the first type of terminal equipment or the second type of terminal equipment can flexibly select the corresponding cell barring barring parameters according to their own terminal equipment types, and further determine according to the selected cell barring parameters Can camp on this cell or other cells on the same frequency as this cell.
  • the methods and operations implemented by the terminal device in the foregoing method embodiments can also be implemented by components (such as chips or circuits) that can be used in the terminal device.
  • the methods and operations implemented by the network device in the foregoing method embodiments may also be implemented by a network device. Operations can also be implemented by components (such as chips or circuits) that can be used in network devices.
  • each network element such as a transmitting end device or a receiving end device, includes hardware structures and/or software modules corresponding to each function in order to realize the above-mentioned functions.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of protection of this application.
  • the embodiments of the present application can divide the transmitting end device or the receiving end device into functional modules based on the foregoing method examples.
  • each functional module can be divided corresponding to each function, or two or more functions can be integrated into one process.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software functional modules. It should be noted that the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other feasible division methods in actual implementation. The following is an example of dividing each function module corresponding to each function.
  • Fig. 7 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • the communication device 700 includes a transceiver unit 710 and a processing unit 720.
  • the transceiver unit 710 can communicate with the outside, and the processing unit 720 is used for data processing.
  • the transceiving unit 710 may also be referred to as a communication interface or a communication unit.
  • the communication device 700 may further include a storage unit, and the storage unit may be used to store instructions and/or data, and the processing unit 720 may read the instructions and/or data in the storage unit.
  • the communication device 700 may be used to perform the actions performed by the terminal device in the above method embodiment.
  • the communication device 700 may be a terminal device or a component configurable in the terminal device, and the transceiver unit 710 is used to perform the above method.
  • the processing unit 720 is configured to perform the processing-related operations on the terminal device side in the above method embodiment for the operations related to receiving and sending on the terminal device side.
  • the communication device 700 may be used to perform the actions performed by the network device in the above method embodiment.
  • the communication device 700 may be a network device or a component configurable in the network device, and the transceiver unit 710 is used to perform the above
  • the processing unit 720 is configured to perform the processing-related operations on the network device side in the above method embodiments for the operations related to receiving and sending on the network device side in the method embodiments.
  • the communication device 700 when the communication device 700 is a terminal device, it is used to perform the actions performed by the terminal device in the embodiment shown in FIG. 4 above, and the transceiving unit 710 is used to: receive the first instruction information sent by the network device.
  • the first indication information is used to indicate the information of the initial bandwidth part of the first cell, where the first cell is a neighboring cell of the second cell, and the second cell is the cell where the terminal device currently resides;
  • the processing unit 720 is configured to : It is detected that the first cell satisfies the reselection measurement criterion, and it is determined whether to measure the first cell according to the type of the terminal device and the first indication information.
  • the processing unit 720 is configured to: when it is detected that the first cell satisfies the reselection measurement criterion, if the type of the terminal device does not support the initial bandwidth portion of the first cell, not to measure the first cell; If the type of the terminal device supports the initial bandwidth part of the first cell, then the first cell is measured.
  • the processing unit 720 is configured to: when it is determined that the first cell is the target cell, if the type of the terminal device does not support the initial bandwidth part of the first cell, control the terminal device not to reselect to the first cell. A cell; if the type of the terminal device supports the initial bandwidth portion of the first cell, control the terminal device to reselect from the second cell to the first cell.
  • the type of the terminal device is a first-type terminal device or a second-type terminal device, and the bandwidth capabilities of the first-type terminal device and the second-type terminal device are different.
  • the information of the initial bandwidth part of the first cell includes one or more of the following information: the bandwidth width of the initial bandwidth part of the first cell, and the type of the initial bandwidth part of the first cell.
  • the type of the initial bandwidth part of the first cell includes: the initial bandwidth part that supports the camping of the first type of terminal equipment, the initial bandwidth part that supports the camping of the second type of terminal equipment, and the support of the first type at the same time
  • the communication device 700 when the communication device 700 is a network device, it is used to perform the actions performed by the network device in the embodiment shown in FIG. 4 above, and the transceiving unit 710 is used to: send the first instruction information to the terminal device.
  • the first indication information is used to indicate the information of the initial bandwidth part of the first cell, where the first cell is a neighboring cell of the second cell, and the second cell is the cell where the terminal device currently resides.
  • the information of the initial bandwidth part of the first cell includes one or more of the following information: the bandwidth width of the initial bandwidth part of the first cell, and the type of the initial bandwidth part of the first cell.
  • the type of the initial bandwidth part of the first cell includes: the initial bandwidth part that supports the camping of the first type of terminal equipment, the initial bandwidth part that supports the camping of the second type of terminal equipment, and the support of the first type of terminal equipment at the same time And the initial bandwidth part where the second type terminal device resides, wherein the bandwidth capabilities of the first type terminal device and the second type terminal device are different.
  • the communication device 700 when the communication device 700 is a terminal device, it is used to perform the actions performed by the terminal device in the embodiment shown in FIG. 5 above, and the transceiving unit 710 is used to: receive the first synchronization signal block from the network device,
  • the first synchronization signal block includes first indication information, the first indication information is used to indicate the cell type of the first cell, the first cell is a cell defined by the second synchronization signal block;
  • the first synchronization signal block includes the second Indication information, the second indication information is used to indicate the position of the second synchronization signal block; wherein, the first synchronization signal block is a synchronization signal block of an undefined cell, and the second synchronization signal block is a synchronization signal block of a defined cell
  • the processing unit 720 is configured to determine whether to search for the second synchronization signal block according to the type of the terminal device and the cell type of the first cell.
  • the type of the terminal device is a first-type terminal device or a second-type terminal device, and the bandwidth capabilities of the first-type terminal device and the second-type terminal device are different.
  • the cell type includes: a cell supporting the camping of the first type of terminal equipment, a cell supporting the camping of the second type of terminal equipment, and supporting the camping of the first type of terminal equipment and the second type of terminal equipment at the same time Of the cell.
  • the processing unit 720 is configured to search for a synchronization signal block in the frequency domain according to a preset step size, and the synchronization signal block is the first synchronization signal block.
  • the communication device 700 when the communication device 700 is a network device, it is used to perform the actions performed by the network device in the embodiment shown in FIG. 5 above, and the transceiver unit 710 is used to send the first synchronization signal to the terminal device.
  • the first synchronization signal block includes first indication information, the first indication information is used to indicate the cell type of the first cell, the first cell is a cell defined by the second synchronization signal block;
  • the first synchronization signal block includes Second indication information, the second indication information is used to indicate the position of the second synchronization signal block; wherein, the first synchronization signal block is a synchronization signal block of an undefined cell, and the second synchronization signal block is a synchronization signal block of a defined cell Signal block.
  • the cell type includes: a cell that supports a first type of terminal device to camp on, a cell that supports a second type of terminal device to camp on, and a cell that supports both the first type of terminal device and the second type of terminal device to camp on. , Wherein the bandwidth capabilities of the first type terminal device and the second type terminal device are different.
  • the communication device 700 when the communication device 700 is a terminal device, it is used to perform the actions performed by the terminal device in the embodiment shown in FIG. 6 above, and the transceiver unit 710 is used to: receive the third instruction information sent by the network device,
  • the third indication information includes a first barring parameter and a second barring parameter, where the first barring parameter is used for the first type of terminal device to perform initial access to the first cell, and the second barring parameter is used for the second type of terminal
  • the device performs initial access to the first cell, and the bandwidth capabilities of the first type terminal device and the second type terminal device are different; the processing unit 720 is configured to determine the use of the first prohibition parameter or the second type of terminal device according to the type of the terminal device. 2. Prohibited parameters.
  • the communication device 700 when the communication device 700 is a network device, it is used to perform the actions performed by the network device in the embodiment shown in FIG. 6 above, and the transceiver unit 710 is used to: send third instruction information to the terminal device.
  • the third indication information includes a first forbidden parameter and a second forbidden parameter, where the first forbidden parameter is used for the first type of terminal equipment to perform initial access to the first cell, and the second forbidden parameter is used for the second type of terminal equipment Perform initial access to the first cell, where the bandwidth capabilities of the first type terminal device and the second type terminal device are different.
  • the processing unit 720 in FIG. 7 may be implemented by a processor or a processor-related circuit.
  • the transceiver unit 710 may be implemented by a transceiver or a transceiver-related circuit.
  • the transceiving unit 710 may also be referred to as a communication unit or a communication interface.
  • the storage unit can be realized by a memory.
  • an embodiment of the present application also provides a communication device 800.
  • the communication device 800 includes a processor 810, which is coupled to a memory 820.
  • the memory 820 is used to store computer programs or instructions or and/or data
  • the processor 810 is used to execute the computer programs or instructions and/or data stored in the memory 820. , So that the method in the above method embodiment is executed.
  • the communication device 800 includes one or more processors 810.
  • the communication device 800 may further include a memory 820.
  • the memory 820 included in the communication device 800 may be one or more.
  • the memory 820 may be integrated with the processor 810 or provided separately.
  • the communication device 800 may further include a transceiver 830, and the transceiver 830 is used for receiving and/or sending signals.
  • the processor 810 is configured to control the transceiver 830 to receive and/or send signals.
  • the communication device 800 is used to implement the operations performed by the terminal device in the foregoing method embodiments.
  • the processor 810 is used to implement the processing-related operations performed by the terminal device in the foregoing method embodiment
  • the transceiver 830 is used to implement the transceiving-related operations performed by the terminal device in the foregoing method embodiment.
  • the communication device 800 is used to implement the operations performed by the network device in the above method embodiments.
  • the processor 810 is used to implement the processing-related operations performed by the network device in the above method embodiment
  • the transceiver 830 is used to implement the transceiving-related operations performed by the network device in the above method embodiment.
  • the embodiment of the present application also provides a communication device 900, and the communication device 900 may be a terminal device or a chip.
  • the communication device 900 may be used to perform operations performed by the terminal device in the foregoing method embodiments.
  • FIG. 9 shows a simplified schematic diagram of the structure of the terminal device. It is easy to understand and easy to illustrate.
  • the terminal device uses a mobile phone as an example.
  • the terminal equipment includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device.
  • the processor is mainly used to process the communication protocol and communication data, and to control the terminal device, execute the software program, and process the data of the software program.
  • the memory is mainly used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of baseband signals and radio frequency signals and the processing of radio frequency signals.
  • the antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal devices may not have input and output devices.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.
  • FIG. 9 only one memory and processor are shown in FIG. 9. In an actual terminal device product, there may be one or more processors and one or more memories.
  • the memory may also be referred to as a storage medium or storage device.
  • the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.
  • the antenna and radio frequency circuit with the transceiving function can be regarded as the transceiving unit of the terminal device, and the processor with the processing function can be regarded as the processing unit of the terminal device.
  • the terminal device includes a transceiving unit 910 and a processing unit 920.
  • the transceiving unit 910 may also be referred to as a transceiver, a transceiver, a transceiving device, and so on.
  • the processing unit 920 may also be referred to as a processor, a processing board, a processing module, a processing device, and the like.
  • the device for implementing the receiving function in the transceiving unit 910 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiving unit 910 can be regarded as the sending unit, that is, the transceiving unit 910 includes a receiving unit and a sending unit.
  • the transceiver unit may sometimes be referred to as a transceiver, a transceiver, or a transceiver circuit.
  • the receiving unit may sometimes be called a receiver, a receiver, or a receiving circuit.
  • the transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.
  • the transceiver unit 910 is configured to perform the receiving operation of the terminal device in FIG. 4 to FIG. 6.
  • the processing unit 920 is configured to perform processing actions on the terminal device side in FIG. 4 to FIG. 6.
  • FIG. 9 is only an example and not a limitation, and the foregoing terminal device including a transceiver unit and a processing unit may not rely on the structure shown in FIG. 9.
  • the chip When the communication device 900 is a chip, the chip includes a transceiver unit and a processing unit.
  • the transceiver unit may be an input/output circuit or a communication interface;
  • the processing unit may be a processor, microprocessor, or integrated circuit integrated on the chip.
  • the embodiment of the present application also provides a communication device 1000, and the communication device 1000 may be a network device or a chip.
  • the communication apparatus 1000 can be used to perform operations performed by a network device in the foregoing method embodiments.
  • FIG. 10 shows a simplified schematic diagram of the base station structure.
  • the base station includes 1010 parts and 1020 parts.
  • the 1010 part is mainly used for the transmission and reception of radio frequency signals and the conversion between radio frequency signals and baseband signals; the 1020 part is mainly used for baseband processing and control of base stations.
  • the 1010 part can generally be called a transceiver unit, transceiver, transceiver circuit, or transceiver.
  • the 1020 part is usually the control center of the base station, and may generally be referred to as a processing unit, which is used to control the base station to perform the processing operations on the network device side in the foregoing method embodiments.
  • the transceiver unit of part 1010 may also be called a transceiver or a transceiver, etc., which includes an antenna and a radio frequency circuit, and the radio frequency circuit is mainly used for radio frequency processing.
  • the device used for implementing the receiving function in part 1010 can be regarded as the receiving unit, and the device used for implementing the sending function can be regarded as the sending unit, that is, the part 1010 includes the receiving unit and the sending unit.
  • the receiving unit may also be called a receiver, a receiver, or a receiving circuit, and the sending unit may be called a transmitter, a transmitter, or a transmitting circuit, etc.
  • Part 1020 may include one or more single boards, and each single board may include one or more processors and one or more memories.
  • the processor is used to read and execute programs in the memory to implement baseband processing functions and control the base station. If there are multiple boards, each board can be interconnected to enhance processing capabilities. As an optional implementation, multiple single boards may share one or more processors, or multiple single boards may share one or more memories, or multiple single boards may share one or more processing at the same time. Device.
  • the transceiver unit of part 1010 is used to perform the steps related to receiving and sending performed by the network device in the embodiment shown in Figure 4 to Figure 6; the part 1020 is used to perform the implementation shown in Figure 4 to Figure 6 The steps related to the processing performed by the network device in the example.
  • FIG. 10 is only an example and not a limitation, and the foregoing network device including a transceiver unit and a processing unit may not rely on the structure shown in FIG. 10.
  • the chip When the communication device 1000 is a chip, the chip includes a transceiver unit and a processing unit.
  • the transceiver unit may be an input/output circuit or a communication interface;
  • the processing unit is a processor, microprocessor, or integrated circuit integrated on the chip.
  • the embodiment of the present application also provides a computer-readable storage medium on which is stored computer instructions for implementing the method executed by the terminal device or the method executed by the network device in the foregoing method embodiment.
  • the computer when the computer program is executed by a computer, the computer can implement the method executed by the terminal device in the foregoing method embodiments or the method executed by the network device.
  • the embodiments of the present application also provide a computer program product containing instructions, which when executed by a computer, cause the computer to implement the method executed by the terminal device in the foregoing method embodiments or the method executed by the network device.
  • An embodiment of the present application also provides a communication system, which includes the network device and the terminal device in the above embodiment.
  • the communication system includes: the network device and the terminal device in the embodiments described above with reference to FIG. 4 to FIG. 6.
  • the terminal device or the network device may include a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer may include hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory).
  • the operating system at the operating system layer can be any one or more computer operating systems that implement business processing through processes, such as Linux operating systems, Unix operating systems, Android operating systems, iOS operating systems, or windows operating systems.
  • the application layer can include applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiment of this application does not specifically limit the specific structure of the execution subject of the method provided in the embodiment of this application, as long as it can run a program that records the code of the method provided in the embodiment of this application, according to the method provided in the embodiment of this application.
  • the execution subject of the method provided in the embodiments of the present application may be a terminal device or a network device, or a functional module in the terminal device or the network device that can call and execute the program.
  • Computer-readable media may include, but are not limited to: magnetic storage devices (for example, hard disks, floppy disks, or tapes, etc.), optical disks (for example, compact discs (CD), digital versatile discs (digital versatile disc, DVD), etc.), etc. ), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.).
  • magnetic storage devices for example, hard disks, floppy disks, or tapes, etc.
  • optical disks for example, compact discs (CD), digital versatile discs (digital versatile disc, DVD), etc.
  • smart cards and flash memory devices for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.
  • the various storage media described herein may represent one or more devices and/or other machine-readable media for storing information.
  • the term "machine-readable medium” may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.
  • processors mentioned in the embodiments of this application may be a central processing unit (central processing unit, CPU), or other general-purpose processors, digital signal processors (digital signal processors, DSP), and application-specific integrated circuits ( application specific integrated circuit (ASIC), ready-made programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc.
  • CPU central processing unit
  • DSP digital signal processors
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM).
  • RAM can be used as an external cache.
  • RAM may include the following various forms: static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM) , Double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) and Direct RAM Bus RAM (DR RAM).
  • static random access memory static random access memory
  • dynamic RAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM synchronous DRAM
  • Double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced SDRAM enhanced synchronous dynamic random access memory
  • SLDRAM Direct RAM Bus RAM
  • the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component
  • the memory storage module
  • memories described herein are intended to include, but are not limited to, these and any other suitable types of memories.
  • the disclosed device and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer may be a personal computer, a server, or a network device.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)), etc.
  • the medium can include but is not limited to: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program code .

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Abstract

本申请提供了一种小区重选方法、终端设备和网络设备。避免终端设备重选到不支持所述终端设备带宽的小区，该终端设备可以是低带宽终端设备，从而减少该终端设备小区重选的时间，同时降低终端设备的功耗。该方法包括：终端设备接收网络设备发送的第一指示信息，第一指示信息用于指示第一小区的初始带宽部分的信息，其中，第一小区为第二小区的邻区，第二小区为终端设备当前驻留的小区；终端设备根据终端设备的类型和第一指示信息确定是否重选至第一小区。

Description

小区重选方法、终端设备和网络设备 技术领域
本申请涉及通信领域，具体涉及一种小区重选方法、终端设备和网络设备。
背景技术
当前5G新无线接入技术(new radio access technology，NR)系统，为了保证终端设备能够达到较高的服务速率、较低的时延，需要终端设备具有很强的能力，比如多天线、支持大带宽等等。然而，在实际场景中，一些终端设备，例如机器类型通信(machine type communication，MTC)设备对服务速率和时延没有那么高的要求，反而需要控制终端设备的成本，即终端设备不能有很强的多天线或大带宽能力。
对于不支持大带宽的终端设备，在小区搜索或重选时，往往因为搜索或重选到的小区带宽不合适，需要一直进行小区搜索或重选直到找到合适的小区进行驻留。这样，不仅会增加这些终端设备小区搜索和小区重选的时间，同时也会增加终端设备的功耗。
发明内容
本申请提供一种小区重选方法、终端设备和网络设备，避免终端设备重选到不支持该终端设备带宽的小区。
第一方面，提供了一种小区重选方法，包括：终端设备接收网络设备发送的第一指示信息，第一指示信息用于指示第一小区的初始带宽部分的信息，其中，第一小区为第二小区的邻区，第二小区为终端设备当前驻留的小区；终端设备根据终端设备的类型和第一指示信息确定是否重选至第一小区。
上述技术方案中，终端设备根据网络设备发送的第一指示信息可以获得第一小区的初始带宽部分的信息，终端设备根据第一小区的初始带宽部分的信息与终端设备的类型是否匹配决定是否要重选到第一小区，避免了终端设备重选到不支持该终端设备带宽的小区。
具体的，如果终端设备只根据第一小区的信号质量决定是否重选到第一小区，可能会导致终端设备在重选至第一小区进行小区驻留时，因为不支持目标小区的初始带宽部分而无法驻留，而本申请上述技术方案的终端设备可以在重选至第一小区之前，先判断该第一小区的带宽是否支持该终端设备的类型，这样能够避免重选到不合适的小区，从而减小了终端设备的小区重选时间以及终端设备的功耗。
结合第一方面，在第一方面的某些实现方式中，终端设备根据终端设备的类型和第一指示信息确定是否重选至第一小区，包括：当终端设备检测到第一小区满足重选测量准则时，如果终端设备的类型不支持第一小区的初始带宽部分，则终端设备不测量第一小区；如果终端设备的类型支持第一小区的初始带宽部分，则终端设备测量第一小区。
上述技术方案中，小区重选是终端设备选择更适合小区的过程，若当前终端设备驻留的小区的邻区中有一些更高优先级或更好信号的小区，协议规定了小区重选测量准则用以 确定这些邻区中哪些需要测量。当第一小区满足重选测量准则需要进行测量时，终端设备根据第一小区的初始带宽部分决定是否要测量第一小区，避免该终端设备测量带宽不支持的小区，从而进一步减小终端设备的功耗。
结合第一方面，在第一方面的某些实现方式中，终端设备根据第一指示信息确定是否重选至第一小区，包括：当终端设备确定第一小区为目标小区时，那么如果终端设备的类型不支持第一小区的初始带宽部分，则终端设备不重选到第一小区；如果终端设备的类型支持第一小区的初始带宽部分，则终端设备从第二小区重选到第一小区。
上述技术方案中，第一小区为终端设备的目标小区，目标小区是指满足上述小区重选测量准则的所有邻区中最适合该终端设备驻留的小区，例如信号强度最强的小区。终端设备根据第一小区的初始带宽部分决定是否要重选到第一小区，避免该终端设备重选到带宽不支持的小区，从而减小终端设备的功耗。
结合第一方面，在第一方面的某些实现方式中，终端设备的类型为第一类型终端设备或第二类型终端设备，第一类型终端设备与第二类型终端设备的带宽能力不同。例如，第一终端设备可包括传统(legacy)NR终端设备，第二终端设备可包括轻量级NR终端设备。轻量级NR终端设备也可以被称作NR-light终端设备，所述NR终端设备的带宽大于所述轻量级NR终端设备的带宽。
上述技术方案中，第一类型终端设备和第二类型终端设备的带宽能力的不同，第一类型终端设备和第二类型终端设备可以根据自己的带宽能力和第一小区的初始带宽部分的信息是否匹配确定是否测量或重选至第一小区。
结合第一方面，在第一方面的某些实现方式中，第一小区的初始带宽部分的信息包括以下一个或多个信息：第一小区的初始带宽部分的带宽宽度、第一小区的初始带宽部分的类型。
上述技术方案中，第一类型终端设备和第二类型终端设备可以根据自己的设备类型和第一小区的初始带宽部分的带宽宽度和/或初始带宽部分的类型是否匹配确定是否测量或重选至第一小区。
结合第一方面，在第一方面的某些实现方式中，第一小区的初始带宽部分的类型包括：支持第一类型终端设备驻留的初始带宽部分、支持第二类型终端设备驻留的初始带宽部分和同时支持第一类型终端设备和第二类型终端设备驻留的初始带宽部分。
上述技术方案中，第一类型终端设备和第二类型终端设备可以根据自己的设备类型和第一小区的初始带宽部分的类型是否匹配确定是否测量或重选至第一小区第二方面，提供了一种小区重选方法，包括：网络设备向终端设备发送第一指示信息，第一指示信息用于指示第一小区的初始带宽部分的信息，其中，第一小区为第二小区的邻区，第二小区为终端设备当前驻留的小区。
第二方面，提供了一种小区重选方法，包括：网络设备向终端设备发送第一指示信息，第一指示信息用于指示第一小区的初始带宽部分的信息，其中，第一小区为第二小区的邻区，第二小区为终端设备当前驻留的小区。
结合第二方面，在第二方面的某些实现方式中，第一小区的初始带宽部分的信息包括以下一个或多个信息：第一小区的初始带宽部分的带宽宽度、第一小区的初始带宽部分的类型。
结合第二方面，在第二方面的某些实现方式中，第一小区的初始带宽部分的类型包括：支持第一类型终端设备驻留的初始带宽部分、支持第二类型终端设备驻留的初始带宽部分和同时支持第一类型终端设备和第二类型终端设备驻留的初始带宽部分，其中，第一类型终端设备与第二类型终端设备的带宽能力不同。
关于第二方面或第二方面的各种实施方式所带来的技术效果，可以参考对于第一方面或第一方面的各种实施方式的技术效果的介绍，不多赘述。
第三方面，提供了一种小区初始接入方法，包括：终端设备从网络设备接收第一同步信号块，第一同步信号块包括第一指示信息，第一指示信息用于指示第一小区的小区类型，第一小区为第二同步信号块定义的小区；第一同步信号块包括第二指示信息，第二指示信息用于指示第二同步信号块的位置；其中，第一同步信号块为未定义小区的同步信号块，第二同步信号块为定义小区的同步信号块；终端设备根据终端设备的类型和第一小区的小区类型确定是否去第二同步信号块的位置搜索第二同步信号块。
上述技术方案中，第二同步信号块定义了第一小区，终端设备根据网络设备发送的第一指示信息和第二指示信息分别可以获得第一小区的小区类型和第二同步信号块的位置，终端设备根据终端设备的类型与第一小区的小区类型是否匹配，确定是否去第二同步信号块的位置搜索第二同步信号块，避免终端设备去搜索一个和自己类型不匹配的小区。
具体的，现有技术中终端设备只要发现第二同步信号定义了一个小区，就去第二同步信号块的位置搜索该小区，在驻留时可能因为与该小区的小区类型不匹配而无法驻留，上述技术方案在搜索第二同步信号之前通过第一指示信息指示的小区类型，终端设备可以快速判断第二同步信号块定义的小区是否适合驻留，再确定是否去搜索第二同步信号，这样不仅降低了终端设备搜索适合驻留的小区的时间，同时也降低了终端设备的功耗。
结合第三方面，在第三方面的某些实现方式中，终端设备的类型为第一类型终端设备或第二类型终端设备，第一类型终端设备与第二类型终端设备的带宽能力不同。例如，第一终端设备包括NR终端设备，第二终端设备包括轻量级NR终端设备，轻量级NR终端设备也可以被称作NR-light终端设备，所述NR终端设备的带宽大于所述轻量级NR终端设备的带宽。
上述技术方案中，第一类型终端设备和第二类型终端设备的带宽能力的不同，第二同步信号块定义了第一小区，第一类型终端设备和第二类型终端设备可以根据自己的带宽能力与第一小区的小区类型是否匹配，确定是否去第二同步信号块的位置搜索第二同步信号块，以便快速找到适合终端设备驻留的小区，降低终端设备的功耗。
结合第三方面，在第三方面的某些实现方式中，小区类型包括：支持第一类型终端设备驻留的小区、支持第二类型终端设备驻留的小区和同时支持第一类型终端设备和第二类型终端设备驻留的小区。
上述技术方案中，不同类型的小区支持不同类型的终端设备驻留，第二同步信号块定义了第一小区，第一类型终端设备和第二类型终端设备根据终端设备的类型和第一小区的小区类型是否匹配，确定是否去第二同步信号块的位置搜索第二同步信号块，以便快速找到适合终端设备驻留的小区，降低终端设备的功耗。
结合第三方面，在第三方面的某些实现方式中，终端设备在接收第一同步信号块之前，该方法还包括：终端设备按照预设的步长，在频域上搜索同步信号块，同步信号块为第一 同步信号块。
第四方面，提供了一种小区初始接入方法，包括：网络设备向终端设备发送第一同步信号块，第一同步信号块包括第一指示信息，第一指示信息用于指示第一小区的小区类型，第一小区为第二同步信号块定义的小区；第一同步信号块包括第二指示信息，第二指示信息用于指示第二同步信号块的位置；其中，第一同步信号块为未定义小区的同步信号块，第二同步信号块为定义小区的同步信号块。
结合第四方面，在第四方面的某些实现方式中，小区类型包括：支持第一类型终端设备驻留的小区、支持第二类型终端设备驻留的小区和同时支持第一类型终端设备和第二类型终端设备驻留的小区，其中，第一类型终端设备与第二类型终端设备的带宽能力不同。
关于第四方面或第四方面的各种实施方式所带来的技术效果，可以参考对于第三方面或第三方面的各种实施方式的技术效果的介绍，不多赘述。
第五方面，提供了一种小区初始接入方法，包括：终端设备接收第三指示信息，第三指示信息包括第一禁止参数和第二禁止参数，其中，第一禁止参数用于第一类型终端设备进行第一小区的初始接入，第二禁止参数用于第二类型终端设备进行第一小区的初始接入，第一类型终端设备与第二类型终端设备的带宽能力不同；终端设备根据终端设备的类型确定使用第一禁止参数或第二禁止参数。
上述技术方案中，配置了两套小区禁止参数，终端设备可以根据自己的类型从两套小区禁止参数中灵活地选取对应的第一小区禁止参数，进而根据对应的小区禁止参数判断是否接入第一小区或与第一小区同频的其他小区。
第六方面，提供了一种小区初始接入方法，包括：网络设备发送第三指示信息，第三指示信息包括第一禁止参数和第二禁止参数，其中，第一禁止参数用于第一类型终端设备进行第一小区的初始接入，第二禁止参数用于第二类型终端设备进行第一小区的初始接入，其中，第一类型终端设备与第二类型终端设备的带宽能力不同。
关于第六方面所带来的技术效果，可以参考对于第五方面的技术效果的介绍，不多赘述。
第七方面，提供了一种终端设备，包括：收发单元，用于接收网络设备发送的第一指示信息，第一指示信息用于指示第一小区的初始带宽部分的信息，其中，第一小区为第二小区的邻区，第二小区为终端设备当前驻留的小区；处理单元，用于根据终端设备的类型和第一指示信息确定是否重选至第一小区。
结合第七方面，在第七方面的某些实现方式中，处理单元，具体用于：当检测到第一小区满足重选测量准则时，如果终端设备的类型不支持第一小区的初始带宽部分，则不测量第一小区；如果终端设备的类型支持第一小区的初始带宽部分，则测量第一小区。
结合第七方面，在第七方面的某些实现方式中，处理单元，具体用于：当确定第一小区为目标小区时，如果终端设备的类型不支持第一小区的初始带宽部分，则控制终端设备不重选到第一小区；如果终端设备的类型支持第一小区的初始带宽部分，则控制终端设备从第二小区重选到第一小区。
结合第七方面，在第七方面的某些实现方式中，终端设备的类型为第一类型终端设备或第二类型终端设备，第一类型终端设备与第二类型终端设备的带宽能力不同。
结合第七方面，在第七方面的某些实现方式中，第一小区的初始带宽部分的信息包括 以下一个或多个信息：第一小区的初始带宽部分的带宽宽度、第一小区的初始带宽部分的类型。
结合第七方面，在第七方面的某些实现方式中，第一小区的初始带宽部分的类型包括：支持第一类型终端设备驻留的初始带宽部分、支持第二类型终端设备驻留的初始带宽部分和同时支持第一类型终端设备和第二类型终端设备驻留的初始带宽部分。
第八方面，提供了一种网络设备，包括：收发单元，用于向终端设备发送第一指示信息，第一指示信息用于指示第一小区的初始带宽部分的信息，其中，第一小区为第二小区的邻区，第二小区为终端设备当前驻留的小区。
结合第八方面，在第八方面的某些实现方式中，第一小区的初始带宽部分的信息包括以下一个或多个信息：第一小区的初始带宽部分的带宽宽度、第一小区的初始带宽部分的类型。
结合第八方面，在第八方面的某些实现方式中，第一小区的初始带宽部分的类型包括：支持第一类型终端设备驻留的初始带宽部分、支持第二类型终端设备驻留的初始带宽部分和同时支持第一类型终端设备和第二类型终端设备驻留的初始带宽部分，其中，第一类型终端设备与第二类型终端设备的带宽能力不同。
第九方面，提供了一种终端设备，包括：收发单元，用于从网络设备接收第一同步信号块，第一同步信号块包括第一指示信息，第一指示信息用于指示第一小区的小区类型，第一小区为第二同步信号块定义的小区；第一同步信号块包括第二指示信息，第二指示信息用于指示第二同步信号块的位置；其中，第一同步信号块为未定义小区的同步信号块，第二同步信号块为定义小区的同步信号块；处理单元，用于根据终端设备的类型和第一小区的小区类型确定是否去第二同步信号块的位置搜索第二同步信号块。
结合第九方面，在第九方面的某些实现方式中，终端设备的类型为第一类型终端设备或第二类型终端设备，第一类型终端设备与第二类型终端设备的带宽能力不同。
结合第九方面，在第九方面的某些实现方式中，小区类型包括：支持第一类型终端设备驻留的小区、支持第二类型终端设备驻留的小区和同时支持第一类型终端设备和第二类型终端设备驻留的小区。
结合第九方面，在第九方面的某些实现方式中，处理单元，按照预设的步长，在频域上搜索同步信号块，同步信号块为第一同步信号块。
第十方面，提供了一种网络设备，包括：收发单元，用于向终端设备发送第一同步信号块，第一同步信号块包括第一指示信息，第一指示信息用于指示第一小区的小区类型，第一小区为第二同步信号块定义的小区；第一同步信号块包括第二指示信息，第二指示信息用于指示第二同步信号块的位置；其中，第一同步信号块为未定义小区的同步信号块，第二同步信号块为定义小区的同步信号块。
结合第十方面，在第十方面的某些实现方式中，小区类型包括：支持第一类型终端设备驻留的小区、支持第二类型终端设备驻留的小区和同时支持第一类型终端设备和第二类型终端设备驻留的小区，其中，第一类型终端设备与第二类型终端设备的带宽能力不同。
第十一方面，提供了一种终端设备，包括：收发单元，用于接收网络设备发送的第三指示信息，第三指示信息包括第一禁止参数和第二禁止参数，其中，第一禁止参数用于第一类型终端设备进行第一小区的初始接入，第二禁止参数用于第二类型终端设备进行第一 小区的初始接入，第一类型终端设备与第二类型终端设备的带宽能力不同；处理单元，用于根据终端设备的类型确定使用第一禁止参数或第二禁止参数。
第十二方面，提供了一种网络设备，包括：收发单元，用于向终端设备发送第三指示信息，第三指示信息包括第一禁止参数和第二禁止参数，其中，第一禁止参数用于第一类型终端设备进行第一小区的初始接入，第二禁止参数用于第二类型终端设备进行第一小区的初始接入，其中，第一类型终端设备与第二类型终端设备的带宽能力不同。
关于第七方面至第十二方面或第七方面至第十二方面的各种实施方式所带来的技术效果，可以参考第一方面至第六方面或第一方面至第六方面的各种实施方式方法侧的技术效果的介绍，这里不多赘述。
第十三方面，提供了一种通信装置，包括处理器。该处理器与存储器耦合，可用于执行存储器中的指令，以实现上述第一方面或第三方面或第五方面以及第一方面或第三方面或第五方面中任一种可能实现方式中的方法。可选地，该通信装置还包括存储器。可选地，该通信装置还包括通信接口，处理器与通信接口耦合。
在一种实现方式中，该通信装置为终端设备。当该通信装置为终端设备时，所述通信接口可以是收发器，或，输入/输出接口。
在另一种实现方式中，该通信装置为配置于终端设备中的芯片。当该通信装置为配置于终端设备中的芯片时，所述通信接口可以是输入/输出接口。
可选地，所述收发器可以为收发电路。可选地，所述输入/输出接口可以为输入/输出电路。
第十四方面，提供了一种通信装置，包括处理器。该处理器与存储器耦合，可用于执行存储器中的指令，以实现上述第二方面或第四方面或第六方面以及第二方面或第四方面或第六方面中任一种可能实现方式中的方法。可选地，该通信装置还包括存储器。可选地，该通信装置还包括通信接口，处理器与通信接口耦合。
在一种实现方式中，该通信装置为网络设备。当该通信装置为网络设备时，所述通信接口可以是收发器，或，输入/输出接口。
在另一种实现方式中，该通信装置为配置于网络设备中的芯片。当该通信装置为配置于网络设备中的芯片时，所述通信接口可以是输入/输出接口。
可选地，所述收发器可以为收发电路。可选地，所述输入/输出接口可以为输入/输出电路。
第十五方面，提供了一种处理器，包括：输入电路、输出电路和处理电路。所述处理电路用于通过所述输入电路接收信号，并通过所述输出电路发射信号，使得所述处理器执行第一方面至第六方面以及第一方面至第六方面中任一种可能实现方式中的方法。
在具体实现过程中，上述处理器可以为一个或多个芯片，输入电路可以为输入管脚，输出电路可以为输出管脚，处理电路可以为晶体管、门电路、触发器和各种逻辑电路等。输入电路所接收的输入的信号可以是由例如但不限于接收器接收并输入的，输出电路所输出的信号可以是例如但不限于输出给发射器并由发射器发射的，且输入电路和输出电路可以是同一电路，该电路在不同的时刻分别用作输入电路和输出电路。本申请实施例对处理器及各种电路的具体实现方式不做限定。
第十六方面，提供了一种处理装置，包括处理器和存储器。该处理器用于读取存储器 中存储的指令，并可通过接收器接收信号，通过发射器发射信号，以执行第一方面至第六方面以及第一方面至第六方面中任一种可能实现方式中的方法。
可选地，所述处理器为一个或多个，所述存储器为一个或多个。
可选地，所述存储器可以与所述处理器集成在一起，或者所述存储器与处理器分离设置。
在具体实现过程中，存储器可以为非瞬时性(non-transitory)存储器，例如只读存储器(read only memory，ROM)，其可以与处理器集成在同一块芯片上，也可以分别设置在不同的芯片上，本申请实施例对存储器的类型以及存储器与处理器的设置方式不做限定。
应理解，相关的数据交互过程例如发送指示信息可以为从处理器输出指示信息的过程，接收能力信息可以为处理器接收输入能力信息的过程。具体地，处理器输出的数据可以输出给发射器，处理器接收的输入数据可以来自接收器。其中，发射器和接收器可以统称为收发器。
上述第十六方面中的处理装置可以是一个或多个芯片。该处理装置中的处理器可以通过硬件来实现也可以通过软件来实现。当通过硬件实现时，该处理器可以是逻辑电路、集成电路等；当通过软件来实现时，该处理器可以是一个通用处理器，通过读取存储器中存储的软件代码来实现，该存储器可以集成在处理器中，可以位于该处理器之外，独立存在。
第十七方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序(也可以称为代码，或指令)，当所述计算机程序被运行时，使得计算机执行上述第一方面至第六方面以及第一方面至第六方面中任一种可能实现方式中的方法。
第十八方面，提供了一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序(也可以称为代码，或指令)当其在计算机上运行时，使得计算机执行上述第一方面至第六方面以及第一方面至第六方面中任一种可能实现方式中的方法。
第十九方面，提供了一种通信系统，包括第七方面或第九方面或第十一方面或第十三方面中的终端设备和第八方面或第十方面或第十二方面或第十四方面中的网络设备。
附图说明
图1是本申请实施例提供的一种网络架构的示意图。
图2是适用于本申请实施例轻量级NR系统中一种同步信号块和初始带宽部分可能部署方式的示意图。
图3是适用于本申请实施例轻量级NR系统中另一种同步信号块和初始带宽部分可能部署方式的示意图。
图4是本申请实施例提供的一种小区初始接入方法的示意性交互图。
图5是本申请实施例提供的一种小区重选方法的示意性交互图。
图6是本申请实施例提供的另一种小区初始接入方法的示意性交互图。
图7是本申请实施例提供的通信装置的示意性框图。
图8为本申请实施例提供的另一通信装置的示意性框图。
图9为本申请实施例提供的终端设备的示意性框图。
图10为本申请实施例提供的网络设备的示意性框图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统，例如：长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、未来的第五代(5th generation，5G)系统或新无线(new radio，NR)，车到其它设备(vehicle-to-X V2X)，其中V2X可以包括车到互联网(vehicle to network，V2N)、车到车(vehicle to-vehicle，V2V)、车到基础设施(vehicle to infrastructure，V2I)、车到行人(vehicle to pedestrian，V2P)等、车间通信长期演进技术(long term evolution-vehicle，LTE-V)、车联网、机器类通信(machine type communication，MTC)、物联网(internet of things，IoT)、机器间通信长期演进技术(long term evolution-machine，LTE-M)，机器到机器(machine to machine，M2M)等。
本申请提供的技术方案还可以应用于未来的通信系统，如第六代移动通信系统等。本申请对此不做限定。
图1示出了本申请实施例提供的一种网络架构的示意图。如图1所示，本申请实施例的通信系统可以包括网络设备和多个终端设备。网络设备可包括1个天线或多个天线。另外，网络设备可附加地包括发射机链和接收机链，本领域普通技术人员可以理解，它们均可包括与信号发送和接收相关的多个部件(例如处理器、调制器、复用器、解调器、解复用器或天线等)。
网络设备可以与多个终端设备通信。本申请实施例中的终端设备也可以称为：用户设备(user equipment，UE)、移动台(mobile station，MS)、移动终端(mobile terminal，MT)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置等。
终端设备可以是一种向用户提供语音/数据连通性的设备，例如，具有无线连接功能的手持式设备、车载设备等。目前，一些终端设备的举例为：手机(mobile phone)、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device，MID)、可穿戴设备，虚拟现实(virtual reality，VR)设备、增强现实(augmented reality，AR)设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，5G网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备和/或用于在无线通信系统上通信的任意其它适合设备，本申请实施例对此并不限定。
其中，可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智 能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
此外，在本申请实施例中，终端设备还可以是物联网系统中的终端设备，IoT是未来信息技术发展的重要组成部分，其主要技术特点是将物品通过通信技术与网络连接，从而实现人机互连，物物互连的智能化网络。
此外，在本申请实施例中，终端设备还可以包括智能打印机、火车探测器、加油站等传感器，主要功能包括收集数据(部分终端设备)、接收网络设备的控制信息与下行数据，并发送电磁波，向网络设备传输上行数据。
本申请实施例中的网络设备可以是用于与终端设备通信的设备，该网络设备可以是LTE系统中的演进型基站B(evolved nodeB，eNB或eNodeB)，还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器，还可以是无线网络控制器(radio network controller，RNC)、基站控制器(base station controller，BSC)、家庭基站(例如，home evolved nodeB，或home nodeB，HNB)、基带单元(baseband unit，BBU)，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络中的网络设备或者未来演进的PLMN网络中的网络设备等，可以是无线局域网(wireless local area networks，WLAN)中的接入点(access point，AP)、无线中继节点、无线回传节点、传输点(transmission point，TP)或者发送接收点(transmission and reception point，TRP)等,可以是新型无线系统(new radio，NR)系统中的gNB或传输点(TRP或TP)，或者，5G系统中的基站的一个或一组(包括多个天线面板)天线面板，或者，还可以为构成gNB或传输点的网络节点，如基带单元(BBU)，或，分布式单元(distributed unit，DU)等，本申请实施例并不限定。
在一些部署中，gNB可以包括集中式单元(centralized unit，CU)和DU。gNB还可以包括有源天线单元(active antenna unit，简称AAU)。CU实现gNB的部分功能，DU实现gNB的部分功能，比如，CU负责处理非实时协议和服务，实现无线资源控制(radio resource control，RRC)，分组数据汇聚层协议(packet data convergence protocol，PDCP)层的功能。DU负责处理物理层协议和实时服务，实现无线链路控制(radio link control，RLC)层、媒体接入控制(media access control，MAC)层和物理(physical，PHY)层的功能。AAU实现部分物理层处理功能、射频处理及有源天线的相关功能。由于RRC层的信息最终会变成PHY层的信息，或者，由PHY层的信息转变而来，因而，在这种架构下，高层信令，如RRC层信令，也可以认为是由DU发送的，或者，由DU+AAU发送的。可以理解的是，网络设备可以为包括CU节点、DU节点、AAU节点中一项或多项的设备。此外，可以将CU划分为接入网(radio access network，RAN)中的网络设备，也可以将CU划分为核心网(core network，CN)中的网络设备，本申请对此不做限定。
另外，在本申请实施例中，网络设备为小区提供服务，终端设备通过网络设备分配的传输资源(例如，频域资源，或者说，频谱资源)与小区进行通信，该小区可以属于宏基 站(例如，宏eNB或宏gNB等)，也可以属于小小区(small cell)对应的基站，这里的小小区可以包括：城市小区(metro cell)、微小区(micro cell)、微微小区(pico cell)、毫微微小区(femto cell)等，这些小小区具有覆盖范围小、发射功率低的特点，适用于提供高速率的数据传输服务。
此外，在本申请实施例中，网络设备可以包括基站(gNB)，例如宏站、微基站、室内热点、以及中继节点等，功能是向终端设备发送无线电波，一方面实现下行数据传输，另一方面发送调度信息控制上行传输，并接收终端设备发送的无线电波，接收上行数据传输。
为了更好地理解本申请实施例，下面先介绍本申请实施例中涉及到的概念。
1、同步信号块(synchronization signal and PBCH block，SSB)，包含主/辅同步信号以及物理广播信道(physical broadcast channel，PBCH)，为UE提供小区下行同步，以及小区的基本配置信息，其中PBCH中会承载小区的主信息块(master information block,MIB)，MIB中会指示是否有系统信息块类型一(system information block type 1，SIB1)存在，以及SIB1的位置。SSB时域上占4个符号，频域上占20个PRB。SSB可以分为cell-defined SSB和non-cell-defined SSB，cell-defined SSB表示这个SSB定义了一个小区，具体表现为MIB指示SIB1的存在，而non-cell-defined SSB表示这个SSB没有定义小区，non-cell-defined SSB中MIB指示没有SIB1的存在，且原来用来指示SIB1位置的比特位可能用来指示下一个cell-defined SSB的位置。SSB在频域上出现有一定的规律，即隔一定的间隔，就可能出现一个SSB，当UE开机后，可以按照此间隔去搜索小区。如果发现一个SSB是cell-defined SSB，就可认为这里为一个可以驻留的小区。
2、带宽部分(bandwidth part或carrier bandwidth part，BWP):在第五代无线接入系统标准NR物理层中，下行频域资源的单位是资源块(resource block，RB)。随着移动用户的增加，以及大容量业务的出现(比如高清视频业务等)，移动通信向未来的5G系统或NR系统等的演进需要的一个重要的方面就是支持大带宽，带宽越大，用于进行数据传输的带宽资源就越多，能够支持的业务量就越大。在载波带宽为大带宽的通信系统中，考虑到UE的成本以及UE的业务量，UE支持的带宽可能小于载波带宽。其中，UE支持的带宽越大，UE的处理能力越强，UE的数据传输速率可能越高，UE的设计成本可能越高。例如，在5G系统中，载波带宽最大可能为400兆赫兹(MHz)，UE的射频带宽能力可能为20MHz、50MHz或100MHz等。在无线通信系统中，不同UE的射频带宽能力可以相同也可以不同。
在载波带宽为大带宽的通信系统中，由于UE的射频带宽能力小于载波带宽，提出了带宽部分的概念，即，一个BWP包括频域上的连续若干个RB。终端设备在自己的BWP上传输，BWP可以是载波上一组连续的频域资源，不同的BWP可以占用的频域资源可以部分重叠，也可以互不重叠。在一个宽带上为UE分配部分频谱使用，以适应UE所能支持的带宽，并且通过为UE配置多种不同带宽的BWP，以实现对UE的灵活调度以及UE的节能。
初始(Initial)BWP:cell-defined SSB中广播的MIB所指示SIB1所在位置的带宽，定义为Initial BWP。在Initial BWP上UE可以获取SIB1，以及其他系统消息(other system information，OSI)，并且可以监听寻呼。当前协议中，Initial BWP的带宽可以配置为5M、 10M或20M。
激活(Active)BWP:当UE有业务到达时，基站会将其从Initial BWP上调度到一个带宽和其业务相匹配的BWP上，此BWP称为Active BWP。根据当前标准，Active BWP上配置的有Type0A以及Type2类型的物理下行控制信道(physical downlink control channel，PDCCH)公共搜索空间(common search space，CSS)，也即UE可以在当前Active BWP上接收寻呼以及OSI。
3、MIB中包含如下参数：
-SystemFrameNumber，6比特，表示当前帧的帧号的高6位；
-SubCarrierSpacingCommon，1比特，表示Initial BWP的子载波间隔；
-Ssb-SubcarrierOffset,3比特，当取特殊值的时候，表示MIB无对应的SIB1，即此SSB为non-cell-defined；
-Dmrs-TypeA-Position，1比特，表示解调参考信号(demodulation reference signal，DMRS)的类型；
-pdcch-ConfigSIB1，8比特，表示SIB1(Initial BWP)所在的位置，若SSB为non-cell-defined，可以来指示CD-SSB的位置；
-cellBarred,1比特，指示当前小区是否被禁止(barred)；
-intraFreqReselection,1比特，指示如果当前小区被禁止，是否允许UE重选到当前频率上的其他小区；
4、小区禁止(cell barring)是网络控制负载的一种方式，当网络负载较重的时候，网络可以控制UE不要驻留在某个小区，参数包括两个：cellBarred和intraFreqReselection。当UE读取某个小区的MIB之后，如果通过cellBarred发现小区被禁止，UE则不能驻留到当前小区，如果intraFreqReselection被设置为不允许(NotAllowed)，表示UE也不能重选到此频率上的其他小区。如果intraFreqReselection被设置为允许(Allowed)，表示UE可以重选到此频率上其他小区。
5、小区预留是网络控制小区使用目的的一种手段，当网络设置当前小区为其他使用目的预留的小区时，即使当前小区的cellBarred没有禁止当前小区驻留，UE也不能驻留在当前小区。
图2和图3是适用于本申请实施例轻量级NR系统中同步信号块SSB和初始带宽部分Initial BWP可能部署方式的示意图。
轻量级NR系统是指针对低硬件能力的终端设备设计的NR系统，轻量级NR系统能够确保低硬件能力的终端设备可以正常工作，轻量级NR系统也可以通过使现有NR系统具备服务低硬件能力的终端设备实现，即可以是独立于现有的NR系统，也可以是对现有NR系统进行增强。
轻量级NR小区是指为低硬件能力的终端设备提供服务的小区。
对于图2所示的场景，一个cell-defined-SSB只映射出一个Initial BWP，要么定义一个普通的NR小区，要么定义一个轻量级NR小区。普通NR小区也可以被称作legacy NR小区或NR小区，轻量级NR小区也可以被称作NR-light小区，本申请对小区类型的名称不做限定。两者的区别是相关配置不同，一般来说NR-light小区的Initial BWP的带宽比NR小区更窄。
NR-light小区的Initial BWP的带宽相对较窄，对于只能驻留在NR-light小区的终端设备可以称为轻量级NR终端设备或NR-light终端设备；而NR小区的Initial BWP的带宽相对较宽，对于能驻留在NR小区的终端设备称为legacy NR终端设备或NR终端设备。NR终端设备的带宽大于NR-light终端设备的带宽。上述终端设备的名称仅仅是示例性的，本申请对终端设备的名称不做限定。
应理解，由于NR终端设备的带宽大于NR-light终端设备的带宽，legacy NR终端设备除了可以驻留在NR小区也可以选择驻留在NR-light小区。
在图2所示的这种场景中，SSB1映射出可供NR的终端设备使用的初始BWP，即定义了一个NR小区，SSB2映射出可供NR-light的终端设备使用的初始BWP，即定义了一个NR-light小区。
对于图3所示的场景，SSB映射出两个Initial BWP，其中一个Initial BWP为可供NR的终端设备使用的初始BWP，另一个Initial BWP为可供NR-light的终端设备使用的初始BWP，即该SSB定义了一个兼具NR和NR-light的小区，该小区可以支持两种类型的终端设备。
在当前小区搜索过程中，终端设备按照一定的步长在频域上搜索cell-defined-SSB。如果一个SSB为non-cell-defined-SSB，则在其MIB中，只指示了下一个cell-defined-SSB的位置，并没有考虑下一个cell-defined-SSB所定义的小区是否适合终端设备驻留。这样可能会增加终端设备搜索适合小区的时间，同时增大功耗。
有鉴于此，本申请的实施例对终端设备搜索小区机制进行优化，以便NR-light的终端设备可以有效地找到合适的小区驻留，节省搜索时间，减小终端设备的功耗。
下面将结合附图详细说明本申请提供的各个实施例。
图4是本申请实施例提供的一种小区初始接入方法的示意性交互图。图4中的终端设备可以是图1中的终端设备120或130，网络设备可以是图1中的网络设备110。
S410，终端设备接收网络设备发送的第一SSB。
对应的，网络设备在第一SSB的位置向终端设备发送第一SSB。
可选的，第一SSB是终端设备在开机之后，按照预设的步长，在频域上搜索到的SSB。
第一SSB可以是non-cell-defined-SSB，该第一SSB包括第一指示信息和第二指示信息。第二指示信息用于指示第一同步信号块的下一个cell-defined-SSB的位置，即第二同步信号块的位置，第一指示信息用于指示第二同步信号块定义的第一小区的小区类型。
可选的，终端设备可以从第一SSB的PBCH中获取第一指示信息和第二指示信息。根据一种可能的实现方式，终端设备可以从所述第一SSB的PBCH中的MIB中获取第一指示信息和第二指示信息。
可选的，第一小区的小区类型包括：支持第一类型终端设备驻留的小区，支持第二类型终端设备驻留的小区，或者支持第一类型终端设备和第二类型终端设备同时驻留的小区。例如，下面以支持第一类型终端设备驻留的小区包括legacy NR小区，支持第二类型终端设备驻留的小区包括NR-light小区，支持第一类型终端设备和第二类型终端设备同时驻留的小区包括兼具NR和NR-light的小区为例进行说明，反之亦可。
上述第一类型终端设备与第二类型终端设备的硬件能力不同，具体地，可能包括支持的带宽不同，天线数目不同，支持的最大调制阶数不同，支持的最大子载波间隔不同，信 号处理能力不同等。下面以第一类型终端设备的硬件能力大于第二终端设备的能力的情况进行说明，反之亦可。例如，第一类型终端设备包括legacy NR终端设备，第二类型终端包括NR-light终端设备，legacy NR终端设备的带宽大于NR-light终端设备的带宽。
可选的，因为第一同步信号块non-cell-defined-SSB没有定义小区，所以第一指示信息可以通过重新定义第一同步信号块中cell barring参数的两个比特(即cellBarred和intraFreqReselection两个比特)或SubCarrierSpacingCommon的一个比特来指示第二同步信号块cell-defined SSB定义的小区的小区类型。具体地，可以使用上述三个比特中的任一个或者多个，指示cell-defined SSB定义的小区的小区类型。重新解读这三个比特的具体方法，本申请不做限制。
S420，终端设备根据终端设备的类型和第一指示信息确定是否去第二同步信号块的位置搜索第二同步信号块。
如果终端设备是第二类型终端设备，例如NR-light终端设备，第一小区是支持第二类型终端设备驻留的小区，例如NR-light小区，表示终端设备的类型和第一小区的类型匹配，即终端设备能够驻留到第一小区，那么终端设备就去第二同步信号块的位置搜索第二同步信号块。如果第一小区是支持第一类型终端设备驻留的小区，例如NR小区，则终端设备则还按照之前预设的步长去搜索下一个SSB。
如果终端设备是第一类型终端设备，例如legacy NR的终端设备，第一小区是支持第一类型终端设备驻留的小区，例如NR小区，表示终端设备的类型和第一小区的类型匹配，即终端设备能够驻留到第一小区，那么终端设备去第二同步信号块的位置搜索第二同步信号块。如果第一小区是支持第二类型终端设备驻留的小区，例如NR-light小区，则终端设备则还按照之前协议规定的步长去搜索下一个SSB。
可选的，因为第一类型的终端设备(例如：legacy NR终端设备)也可以驻留在支持二类型终端设备驻留的小区(例如：NR-light小区)，所以legacy NR终端设备也可以直接去第二同步信号块的位置搜索第二同步信息块，无论第二同步信息块定义的小区是不是NR小区。
上述技术方案通过在non-cell-defined-SSB中指示下一个cell-defined-SSB定义的小区的类型，可以使NR-light的终端设备快速确定该小区是否适合自己驻留，从而降低NR-light小区搜索时间，节省终端设备的功耗。
终端设备成功驻留在一个小区后，在空闲模式下会持续监测邻区和当前小区的信号质量，以便进行小区重选，从而为终端设备选择一个最好的小区提供服务信号。
为便于理解，首先简单地介绍一下小区选择/重选。
1、小区选择
当终端设备开机或发生无线链路失败等情况时，终端设备将执行小区搜索过程，并尽快选择合适的小区驻留，这个过程称为“小区选择”。
一种可能的小区选择过程示例如下：
终端设备在小区搜索过程中会读取该小区的系统信息，获取到Qrxlevmeas、Qrxlevmin和Qrxlevminoffset等参数，终端设备根据S准则评估该小区是否是合适的小区，一旦找到合适的小区，即，满足S准则的小区，则小区选择过程就完成了。如果该小区不是合适的小区，则终端设备继续进行搜索，直到找到合适的小区并驻留。
S准则公式：Srxlev>0，即小区的S值如果大于0，则说明该小区是合适的小区，即，适合驻留的小区，Srxlev的计算公式是：
Srxlev＝Qrxlevmeas-(Qrxlevmin-Qrxlevminoffset)-Pcompensation
其中：
Srxlev：计算得到的小区选择接收电平值；
Qrxlevmeas：终端设备测量得到的接收信号强度值，该值为测量到的参考信号接收功率(reference signal receiving power，RSRP)；
Qrxlevmin：该小区要求的最小接收信号强度值；
Pcompensation：(PEMAX–PUMAX)或0中的较大值，其中PEMAX为终端设备在接入该小区时，系统设定的最大允许发送功率；PUMAX是指根据终端设备等级规定的最大输出功率。
Qrxlevminoffset：该参数只有在终端设备正常驻留在一个虚拟专用移动网(virtual private mobile network，VPMN)，周期性搜索一个高优先级的公共陆地移动网络(public land mobile network，PLMN)进行小区选择评估时才有效，该参数对Qrxlevmin进行一定的偏置。
需要说明的是，由于通信协议版本的演进，S准则公式和Srxlev的计算公式可能会由于某些原因发生改变，这里给出的公式只是例子，并不对公式本身做任何限定。本申请实施例不对小区选择的参数和准则进行限定。
2、小区重选测量准则
当终端设备驻留在一个小区后，随着终端设备的移动，终端设备可能需要更换到另一个更高优先级或更好信号的小区驻留，这就是小区重选过程。小区选择是尽快找到一个合适小区的过程，小区重选是选择更适合小区的过程。为了终端设备的省电，协议规定了小区重选测量准则：
对于优先级高于本驻留小区的频率层或系统，终端设备始终对其进行测量；
如果驻留小区的Srxlev<＝Sintrasearch，终端设备启动对同频/同优先级小区的测量，其中，Sintrasearch是同频测量启动门限值；
如果驻留小区的Srxlev<＝Snonintrasearch或Snonintrasearch未配置，终端设备启动对低优先级频率及系统的测量，其中，Snonintrasearch是异频/异系统测量启动门限值；
3、小区重选准则
在测量后，终端设备会判断是否执行小区重选到新的小区，重选标准如下：
高优先级频率或系统的重选标准：终端设备驻留原小区的时间超过1秒，同时目标频率小区的Srxlev>Threshx-high，且持续一定的时间，其中，Threshx-high是指从当前服务载频重选到优先级高的频率时的门限值；
低优先级频率或系统的重选标准：终端设备驻留原小区的时间超过1秒且没有高优先级(或同等优先级)频率的小区符合重选要求条件，同时驻留小区的Srxlev<Threshserving-low，且持续一定的时间，其中，Threshx-low是指从当前服务载频重选到优先级低的频率时的门限值；
同优先级频率或系统的重选标准：终端设备驻留原小区的时间超过1秒且没有高优先级频率的小区符合重选要求条件，同时小区重选到同优先级频率中小区基于同频小区重选 的排序(Ranking)标准。同频小区重选Ranking标准定义如下，Rs为当前驻留小区的ranking值，Rn为邻区的ranking值：
Rs＝Qmeas_s+Qhyst–Qoffset_temp，Rn＝Qmeas_s–Qoffset–Qoffset_temp
其中：
Qhyst：迟滞值，用于防止乒乓重选；
Qmeas_s：终端设备测量得到的驻留小区的接收信号强度值；
Qoffset：对于同频，当Qoffsets_n有效，取值为取值为Qoffsets_n，否则取值为0；对于异频，当Qoffsets_n有效，取值为Qoffsets_n+Qoffsetfrequency，否则取值为Qoffsetfrequency、；
Qoffset_temp：可以表示偏差量。偏差量例如可以是网络广播的、当终端设备在一个小区上发生RRC连接建立失败后，为该小区添加的偏差量。
终端设备会对所有满足小区选择S准则的小区进行ranking值的排序，重选时不是简单重选到排序最好的小区，而是找出排序时的最高ranking值，与它相差一定范围内(如x dB，其中x是可配的)的小区都认为是相近(similar)小区最终ranking值最高的小区也称为目标小区。
一般地，在当前驻留的小区的系统消息中会广播当前驻留小区和邻区的上面需要的配置参数，从而终端设备能计算得出Rs和Rn等参数。Qmeas是终端设备测量得到的小区的接收信号强度值。每个小区的信号强度高于门限的至多N个波束(beam)可以被用来生成小区量(cell quality)，小区量经过层3过滤后作为Qmeas。其中，门限和N在广播消息中通知终端设备，N为大于1或等于1的整数。其中，高于门限的beam被认为是good beam。
需要说明的是，由于通信协议版本的演进，Rs和Rn的计算公式可能会由于某些原因发生改变，这里给出的公式只是例子，并不对公式本身做任何限定。本申请实施例不对小区重选的参数和准则进行限定。
如前所述，按照上述小区重选机制，只根据小区的信号质量决定目标小区，并没有考虑NR-light的终端设备可能没有大带宽能力，可能会导致终端设备并不能支持目标小区的Initial BWP带宽，从而无法重选到目标小区，这样可能会造成资源的浪费，同时增大终端设备的功耗。
有鉴于此，本申请实施例对NR-light小区的重选机制进行优化，使NR-light终端设备避免测量或者重选到带宽不支持的小区，节省信令开销，减小终端设备的功耗。
图5是本申请实施例提供的一种小区重选方法的示意性交互图。图5中的终端设备可以是图1中的终端设备120或130，网络设备可以是图1中的网络设备110。
S510，终端设备接收网络设备发送的第一指示信息。
对应的，网络设备向终端设备发送第一指示信息。
终端设备驻留在第二小区后，持续接收网络设备发送的与第二小区重选相关的系统信息，该系统信息包括第一指示信息，第一指示信息用于指示第一小区的Initial BWP带宽的信息，第一小区为第二小区的邻区。例如，第一小区的Initial BWP带宽的信息包括第一小区的Initial BWP带宽的宽度和/或第一小区的Initial BWP带宽的类型。
作为示例而非限定，第一指示信息包括参数Per frequency/cell，Per frequency/cell用于 指示第一小区的Initial BWP带宽的信息。
可选的，第一指示信息用于指示第一小区的Initial BWP带宽的宽度，其中Initial BWP带宽的宽度为MIB中CORESET#0的宽度，CORESET#0的配置由MIB中参数pdcch-ConfigSIB1指示。
可选的，如果第二小区的所有邻区支持多种Initial BWP带宽的宽度，则与第二小区重选相关的系统信息除了包括第一小区的Initial BWP带宽的宽度，还可以指示其它多个Initial BWP带宽的宽度。为了节省系统信息的开销，可以广播一个公共Initial BWP带宽的宽度，然后广播不同于公共带宽的小区带宽的宽度。
可选的，第一指示信息还可以用于指示第一小区的Initial BWP带宽的类型，例如：Initial BWP带宽类型包括：支持第一类型终端设备驻留的Initial BWP带宽、支持第二类型终端设备驻留的Initial BWP带宽和同时支持第一类型终端设备和支持第二类型终端设备驻留的Initial BWP带宽。例如，支持第一类型终端设备驻留的Initial BWP带宽包括legacy NR小区的Initial BWP带宽，支持第二类型终端设备驻留的Initial BWP带宽包括NR-light小区的Initial BWP带宽，支持第一类型终端设备和第二类型终端设备同时驻留的Initial BWP带宽包括兼具NR和NR-light的小区的Initial BWP带宽。
上述第一类型终端设备与第二类型终端设备可以是硬件能力不同的终端设备。具体地，可能包括支持的带宽不同，天线数目不同，支持的最大调制阶数不同，支持的最大子载波间隔不同，信号处理能力不同等。以第一类型终端设备的硬件能力大于第二终端设备的能力为例进行说明，反之亦可。例如，第一类型终端设备包括legacy NR终端设备，第二类型终端包括NR-light终端设备，NR终端设备的带宽大于NR-light终端设备的带宽。
可选的，如果第二小区的所有邻区支持多种Initial BWP带宽的类型，则与第二小区重选相关的系统消息除了指示第一小区的Initial BWP带宽类型，还可以分别指示其它多个带宽类型。为了节省系统信息的开销，可以只指示支持第二类型终端设备驻留的小区的Initial BWP带宽的类型，例如只指示NR-light小区的Initial BWP带宽。
可选的，第一指示信息还可以用于指示第一小区的SIB1中重新指示的Initial BWP带宽。
可选的，第一指示信息还可以包括：第一小区的载波宽度配置，第一小区的频带信息。例如载波宽度配置，可以包括不同子载波间隔下，第一小区的载波起始位置和带宽。
S520，终端设备根据终端设备的类型和第一指示信息确定是否重选至第一小区。
如上所述，终端设备进行小区重选前，终端设备首先会根据小区重选测量准则，决定第二小区的邻区中有哪些小区需要测量。
可选的，如果第一小区满足重选测量准则，终端设备会根据终端设备的类型和第一指示信息指示的第一小区的initial BWP带宽信息，决定是否要测量第一小区。
如果终端设备的类型支持第一小区的Initial BWP带宽，则测量第一小区；如果终端设备的类型不支持第一小区的Initial BWP带宽，则不测量第一小区，这样，第一小区最终也不会成为小区重选的目标小区。
应理解，当第一指示信息中包括第一小区的载波宽度配置和/或第一小区的频带信息时，还需要确定终端设备是否支持第一小区的载波宽度和/或第一小区的频带信息，只有终端设备支持第一指示信息中所有关于第一小区的信息，终端设备才会测量第一小区，否 则，不会对第一小区进行测量。
如上所述，终端设备进行小区重选前，终端设备根据现有小区重选准则，确定终端设备重选的目标小区。
可选的，如果第一小区为终端设备的目标小区，终端设备根据终端设备的类型和第一指示信息指示的第一小区的Initial BWP带宽信息，确定是否支持目标小区的Initial BWP带宽。
如果终端设备的类型支持第一小区的Initial BWP带宽，则重选到第一小区；如果终端设备的类型不支持第一小区的Initial BWP带宽，则不测量第一小区。
应理解，当第一指示信息中包括第一小区的载波宽度配置和/或第一小区的频带信息时，还需要确定终端设备是否支持第一小区的载波宽度和/或第一小区的频带信息，只有终端设备支持第一指示信息中所有关于第一小区的信息，终端设备才会重选到第一小区，否则，不会重选到第一小区。
上述方案中通过在第一指示信息中携带邻区的Initial BWP带宽信息，使NR-light终端设备避免测量或者重选到带宽自己不支持的小区，从而减小终端设备的功耗。
如前所述，MIB中包含参数cell barring，但目前MIB中只有一套cell barring参数，只适用于图2所示的场景，但对于图3所示的场景，cell-defined-SSB定义的小区既支持NR小区又支持NR-light小区，当前的cell barring参数无法同时指示两种小区接入的禁止功能。
有鉴于此，本申请提出一种方法，可以针对图3所示的场景更加灵活地配置cell barring参数。
图6是本申请实施例提供的另一种小区初始接入方法的示意性交互图。
S610，终端设备接收网络设备发送的第三指示信息。图6中的终端设备可以是图1中的终端设备120或130，网络设备可以是图1中的网络设备110。
对应的，网络设备向终端设备发送第三指示信息。
可选的，终端设备可以从网络设备发送的第一小区的MIB中获取第三指示信息。
第三指示信息包括第一禁止参数和第二禁止参数，第一禁止参数用于第一类型终端设备进行第一小区的初始接入，第二禁止参数用于第二类型终端设备进行第一小区的初始接入。
上述第一类型终端设备与第二类型终端设备为硬件能力不同的终端设备，具体地，可能包括支持的带宽不同，天线数目不同，支持的最大调制阶数不同，支持的最大子载波间隔不同，信号处理能力不同等，下面以第一类型终端设备的硬件能力大于第二终端设备的能力为例进行说明，反之亦可。例如，第一类型终端设备包括legacy NR终端设备，第二类型终端包括NR-light终端设备，NR终端设备的带宽大于NR-light终端设备的带宽。
第一禁止参数和第二禁止参数分别包括一套cell barring参数，cell barring是网络控制负载的一种方式，当网络负载较重的时候，网络可以控制终端设备不要驻留在某个小区，cell barring包括两个参数：cellBarred和intraFreqReselection。当终端设备读取某个小区的MIB之后，如果通过cellBarred发现小区被禁止，终端设备则不能驻留到当前小区，如果intraFreqReselection被设置为不允许(NotAllowed)，表示终端设备也不能重选到此频率上的其他小区。如果intraFreqReselection被设置为允许(Allowed)，表示终端设备可以 重选到此频率上其他小区。
可选的，第三指示信息包括第一预留指示信息或第二预留指示信息或第三预留指示信息。第一预留指示信息用于指示第一小区是否为网络运营商为其他目的预留的小区，如果第一预留指示信息为true，表示终端设备不能驻留在第一小区；第二预留指示信息指示第一小区是针对第一类型终端设备设置的小区预留指示，如果第二预留指示信息为true，表示第一类型终端设备不能驻留在第一小区；第三预留指示信息指示第一小区是针对第二类型终端设备设置的小区预留指示，如果第三预留指示信息为true，表示第二类型终端设备不能驻留在第一小区。
可选的，第三指示信息可以由指示第一小区位置的cell-defined-SSB指示。
可选的，第三指示消息可以由第一小区的SIB1指示。
可选的，第三指示信息可以由第一小区的其它SIB指示。
S620，终端设备根据终端设备类型和第三指示信息确定使用第一禁止参数或第二禁止参数。
终端设备根据自己是第一类型终端设备或第二类型终端设备决定使用第三指示信息中的第一禁止参数或第二禁止参数。
如果终端设备是第一类型终端设备，则使用第一禁止参数，进而确定是否能驻留在第一小区或者与第一小区同频的小区；
如果终端设备是第二类型的终端设备，则使用第二禁止参数，进而确定是否能驻留在第一小区或者与第一小区同频的小区。
上述技术方案通过添加额外一套cell barring参数，第一类型终端设备或第二类型终端设备可以灵活地根据自己的终端设备类型选择对应的cell barring禁止参数，进一步根据所选择的小区禁止参数从而判断是否可以驻留该小区或与该小区同频的其它小区。
本文中描述的各个实施例可以为独立的方案，也可以根据内在逻辑进行组合，这些方案都落入本申请的保护范围中。
可以理解的是，上述各个方法实施例中由终端设备实现的方法和操作，也可以由可用于终端设备的部件(例如芯片或者电路)实现，上述各个方法实施例中由网络设备实现的方法和操作，也可以由可用于网络设备的部件(例如芯片或者电路)实现。
上文描述了本申请提供的方法实施例，下文将描述本申请提供的装置实施例。应理解，装置实施例的描述与方法实施例的描述相互对应，因此，未详细描述的内容可以参见上文方法实施例，为了简洁，这里不再赘述。
上文主要从各个网元之间交互的角度对本申请实施例提供的方案进行了描述。可以理解的是，各个网元，例如发射端设备或者接收端设备，为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的保护范围。
本申请实施例可以根据上述方法示例，对发射端设备或者接收端设备进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成 在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有其它可行的划分方式。下面以采用对应各个功能划分各个功能模块为例进行说明。
图7是本申请实施例提供的通信装置的示意性框图。该通信装置700包括收发单元710和处理单元720。收发单元710可以与外部进行通信，处理单元720用于进行数据处理。收发单元710还可以称为通信接口或通信单元。
可选地，该通信装置700还可以包括存储单元，该存储单元可以用于存储指令或者和/或数据，处理单元720可以读取存储单元中的指令或者和/或数据。
该通信装置700可以用于执行上文方法实施例中终端设备所执行的动作，这时，该通信装置700可以为终端设备或者可配置于终端设备的部件，收发单元710用于执行上文方法实施例中终端设备侧的收发相关的操作，处理单元720用于执行上文方法实施例中终端设备侧的处理相关的操作。
或者，该通信装置700可以用于执行上文方法实施例中网络设备所执行的动作，这时，该通信装置700可以为网络设备或者可配置于网络设备的部件，收发单元710用于执行上文方法实施例中网络设备侧的收发相关的操作，处理单元720用于执行上文方法实施例中网络设备侧的处理相关的操作。
作为一种设计，该通信装置700为终端设备时，用于执行上文图4所示实施例中终端设备所执行的动作，收发单元710用于：接收网络设备发送的第一指示信息，该第一指示信息用于指示第一小区的初始带宽部分的信息，其中，该第一小区为第二小区的邻区，该第二小区为该终端设备当前驻留的小区；处理单元720用于：检测到该第一小区满足重选测量准则，根据该终端设备的类型和第一指示信息确定是否测量该第一小区。
可选的，处理单元720用于：当检测到所述第一小区满足重选测量准则时，如果该终端设备的类型不支持该第一小区的初始带宽部分，则不测量该第一小区；如果该终端设备的类型支持该第一小区的初始带宽部分，则测量该第一小区。
可选的，处理单元720用于：当确定所述第一小区为目标小区时，如果该终端设备的类型不支持该第一小区的初始带宽部分，则控制该终端设备不重选到该第一小区；如果该终端设备的类型支持该第一小区的初始带宽部分，则控制该终端设备从该第二小区重选到该第一小区。
可选的，该终端设备的类型为第一类型终端设备或第二类型终端设备，该第一类型终端设备与该第二类型终端设备的带宽能力不同。
可选的，该第一小区的初始带宽部分的信息包括以下一个或多个信息：该第一小区的初始带宽部分的带宽宽度、该第一小区的初始带宽部分的类型。
可选的，该第一小区的初始带宽部分的类型包括：支持该第一类型终端设备驻留的初始带宽部分、支持该第二类型终端设备驻留的初始带宽部分和同时支持该第一类型终端设备和该第二类型终端设备驻留的初始带宽部分。
作为另一种设计，该通信装置700为网络设备时，用于执行上文图4所示实施例中网络设备所执行的动作，收发单元710用于：向终端设备发送第一指示信息，该第一指示信息用于指示第一小区的初始带宽部分的信息，其中，该第一小区为第二小区的邻区，该第 二小区为该终端设备当前驻留的小区。
可选的，该第一小区的初始带宽部分的信息包括以下一个或多个信息：该第一小区的初始带宽部分的带宽宽度、该第一小区的初始带宽部分的类型。
可选的，该第一小区的初始带宽部分的类型包括：支持第一类型终端设备驻留的初始带宽部分、支持第二类型终端设备驻留的初始带宽部分和同时支持该第一类型终端设备和该第二类型终端设备驻留的初始带宽部分，其中，该第一类型终端设备与该第二类型终端设备的带宽能力不同。
作为又一种设计，该通信装置700为终端设备时，用于执行上文图5所示实施例中终端设备所执行的动作，收发单元710用于：从网络设备接收第一同步信号块，该第一同步信号块包括第一指示信息，该第一指示信息用于指示第一小区的小区类型，该第一小区为第二同步信号块定义的小区；该第一同步信号块包括第二指示信息，该第二指示信息用于指示该第二同步信号块的位置；其中，该第一同步信号块为未定义小区的同步信号块，该第二同步信号块为定义小区的同步信号块；处理单元720用于：根据该终端设备的类型和该第一小区的小区类型确定是否去第二同步信号块的位置搜索该第二同步信号块。
可选的，该终端设备的类型为第一类型终端设备或第二类型终端设备，该第一类型终端设备与该第二类型终端设备的带宽能力不同。
可选的，该小区类型包括：支持该第一类型终端设备驻留的小区、支持该第二类型终端设备驻留的小区和同时支持该第一类型终端设备和该第二类型终端设备驻留的小区。
可选的，处理单元720用于：按照预设的步长，在频域上搜索同步信号块，该同步信号块为该第一同步信号块。
作为又一种设计，该通信装置700为网络设备时，用于执行上文图5所示实施例中网络设备所执行的动作，收发单元710用于：用于向终端设备发送第一同步信号块，该第一同步信号块包括第一指示信息，该第一指示信息用于指示第一小区的小区类型，该第一小区为第二同步信号块定义的小区；该第一同步信号块包括第二指示信息，该第二指示信息用于指示该第二同步信号块的位置；其中，该第一同步信号块为未定义小区的同步信号块，该第二同步信号块为定义小区的同步信号块。
可选的，该小区类型包括：支持第一类型终端设备驻留的小区、支持第二类型终端设备驻留的小区和同时支持该第一类型终端设备和该第二类型终端设备驻留的小区，其中，该第一类型终端设备与该第二类型终端设备的带宽能力不同。
作为又一种设计，该通信装置700为终端设备时，用于执行上文图6所示实施例中终端设备所执行的动作，收发单元710用于：接收网络设备发送的第三指示信息，该第三指示信息包括第一禁止参数和第二禁止参数，其中，该第一禁止参数用于第一类型终端设备进行第一小区的初始接入，该第二禁止参数用于第二类型终端设备进行第一小区的初始接入，该第一类型终端设备与该第二类型终端设备的带宽能力不同；处理单元720用于，根据该终端设备的类型确定使用该第一禁止参数或该第二禁止参数。
作为又一种设计，该通信装置700为网络设备时，用于执行上文图6所示实施例中网络设备所执行的动作，收发单元710用于：向终端设备发送第三指示信息，该第三指示信息包括第一禁止参数和第二禁止参数，其中，该第一禁止参数用于第一类型终端设备进行第一小区的初始接入，该第二禁止参数用于第二类型终端设备进行第一小区的初始接入， 其中，该第一类型终端设备与该第二类型终端设备的带宽能力不同。
图7中的处理单元720可以由处理器或处理器相关电路实现。收发单元710可以由收发器或收发器相关电路实现。收发单元710还可称为通信单元或通信接口。存储单元可以通过存储器实现。
如图8所示，本申请实施例还提供一种通信装置800。该通信装置800包括处理器810，处理器810与存储器820耦合，存储器820用于存储计算机程序或指令或者和/或数据，处理器810用于执行存储器820存储的计算机程序或指令和/或者数据，使得上文方法实施例中的方法被执行。
可选地，该通信装置800包括的处理器810为一个或多个。
可选地，如图8所示，该通信装置800还可以包括存储器820。
可选地，该通信装置800包括的存储器820可以为一个或多个。
可选地，该存储器820可以与该处理器810集成在一起，或者分离设置。
可选地，如图8所示，该通信装置800还可以包括收发器830，收发器830用于信号的接收和/或发送。例如，处理器810用于控制收发器830进行信号的接收和/或发送。
作为一种方案，该通信装置800用于实现上文方法实施例中由终端设备执行的操作。
例如，处理器810用于实现上文方法实施例中由终端设备执行的处理相关的操作，收发器830用于实现上文方法实施例中由终端设备执行的收发相关的操作。
作为另一种方案，该通信装置800用于实现上文方法实施例中由网络设备执行的操作。
例如，处理器810用于实现上文方法实施例中由网络设备执行的处理相关的操作，收发器830用于实现上文方法实施例中由网络设备执行的收发相关的操作。
本申请实施例还提供一种通信装置900，该通信装置900可以是终端设备也可以是芯片。该通信装置900可以用于执行上述方法实施例中由终端设备所执行的操作。当该通信装置900为终端设备时，图9示出了一种简化的终端设备的结构示意图。便于理解和图示方便，图9中，终端设备以手机作为例子。如图9所示，终端设备包括处理器、存储器、射频电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理，以及对终端设备进行控制，执行软件程序，处理软件程序的数据等。存储器主要用于存储软件程序和数据。射频电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。需要说明的是，有些种类的终端设备可以不具有输入输出装置。
当需要发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。为便于说明，图9中仅示出了一个存储器和处理器，在实际的终端设备产品中，可以存在一个或多个处理器和一个或多个存储器。存储器也可以称为存储介质或者存储设备等。存储器可以是独立于处理器设置，也可以是与处理器集成在一起，本申请实施例对此不做限制。
在本申请实施例中，可以将具有收发功能的天线和射频电路视为终端设备的收发单元，将具有处理功能的处理器视为终端设备的处理单元。
如图9所示，终端设备包括收发单元910和处理单元920。收发单元910也可以称为收发器、收发机、收发装置等。处理单元920也可以称为处理器，处理单板，处理模块、处理装置等。
可选地，可以将收发单元910中用于实现接收功能的器件视为接收单元，将收发单元910中用于实现发送功能的器件视为发送单元，即收发单元910包括接收单元和发送单元。收发单元有时也可以称为收发机、收发器、或收发电路等。接收单元有时也可以称为接收机、接收器、或接收电路等。发送单元有时也可以称为发射机、发射器或者发射电路等。
例如，在一种实现方式中，收发单元910用于执行图4至图6中的终端设备的接收操作。处理单元920用于执行图4至图6中终端设备侧的处理动作。
应理解，图9仅为示例而非限定，上述包括收发单元和处理单元的终端设备可以不依赖于图9所示的结构。
当该通信装置900为芯片时，该芯片包括收发单元和处理单元。其中，收发单元可以是输入输出电路或通信接口；处理单元可以为该芯片上集成的处理器或者微处理器或者集成电路。
本申请实施例还提供一种通信装置1000，该通信装置1000可以是网络设备也可以是芯片。该通信装置1000可以用于执行上述方法实施例中由网络设备所执行的操作。
当该通信装置1000为网络设备时，例如为基站。图10示出了一种简化的基站结构示意图。基站包括1010部分以及1020部分。1010部分主要用于射频信号的收发以及射频信号与基带信号的转换；1020部分主要用于基带处理，对基站进行控制等。1010部分通常可以称为收发单元、收发机、收发电路、或者收发器等。1020部分通常是基站的控制中心，通常可以称为处理单元，用于控制基站执行上述方法实施例中网络设备侧的处理操作。
1010部分的收发单元，也可以称为收发机或收发器等，其包括天线和射频电路，其中射频电路主要用于进行射频处理。可选地，可以将1010部分中用于实现接收功能的器件视为接收单元，将用于实现发送功能的器件视为发送单元，即1010部分包括接收单元和发送单元。接收单元也可以称为接收机、接收器、或接收电路等，发送单元可以称为发射机、发射器或者发射电路等。
1020部分可以包括一个或多个单板，每个单板可以包括一个或多个处理器和一个或多个存储器。处理器用于读取和执行存储器中的程序以实现基带处理功能以及对基站的控制。若存在多个单板，各个单板之间可以互联以增强处理能力。作为一种可选的实施方式，也可以是多个单板共用一个或多个处理器，或者是多个单板共用一个或多个存储器，或者是多个单板同时共用一个或多个处理器。
例如，在一种实现方式中，1010部分的收发单元用于执行图4至图6所示实施例中由网络设备执行的收发相关的步骤；1020部分用于执行图4至图6所示实施例中由网络设备执行的处理相关的步骤。
应理解，图10仅为示例而非限定，上述包括收发单元和处理单元的网络设备可以不依赖于图10所示的结构。
当该通信装置1000为芯片时，该芯片包括收发单元和处理单元。其中，收发单元可以是输入输出电路、通信接口；处理单元为该芯片上集成的处理器或者微处理器或者集成电路。
本申请实施例还提供一种计算机可读存储介质，其上存储有用于实现上述方法实施例中由终端设备执行的方法，或由网络设备执行的方法的计算机指令。
例如，该计算机程序被计算机执行时，使得该计算机可以实现上述方法实施例中由终端设备执行的方法，或由网络设备执行的方法。
本申请实施例还提供一种包含指令的计算机程序产品，该指令被计算机执行时使得该计算机实现上述方法实施例中由终端设备执行的方法，或由网络设备执行的方法。
本申请实施例还提供一种通信系统，该通信系统包括上文实施例中的网络设备与终端设备。
作为一个示例，该通信系统包括：上文结合图4至图6描述的实施例中的网络设备与终端设备。
上述提供的任一种通信装置中相关内容的解释及有益效果均可参考上文提供的对应的方法实施例，此处不再赘述。
在本申请实施例中，终端设备或网络设备可以包括硬件层、运行在硬件层之上的操作系统层，以及运行在操作系统层上的应用层。其中，硬件层可以包括中央处理器(central processing unit，CPU)、内存管理单元(memory management unit，MMU)和内存(也称为主存)等硬件。操作系统层的操作系统可以是任意一种或多种通过进程(process)实现业务处理的计算机操作系统，例如，Linux操作系统、Unix操作系统、Android操作系统、iOS操作系统或windows操作系统等。应用层可以包含浏览器、通讯录、文字处理软件、即时通信软件等应用。
本申请实施例并未对本申请实施例提供的方法的执行主体的具体结构进行特别限定，只要能够通过运行记录有本申请实施例提供的方法的代码的程序，以根据本申请实施例提供的方法进行通信即可。例如，本申请实施例提供的方法的执行主体可以是终端设备或网络设备，或者，是终端设备或网络设备中能够调用程序并执行程序的功能模块。
本申请的各个方面或特征可以实现成方法、装置或使用标准编程和/或工程技术的制品。本文中使用的术语“制品”可以涵盖可从任何计算机可读器件、载体或介质访问的计算机程序。例如，计算机可读介质可以包括但不限于：磁存储器件(例如，硬盘、软盘或磁带等)，光盘(例如，压缩盘(compact disc，CD)、数字通用盘(digital versatile disc，DVD)等)，智能卡和闪存器件(例如，可擦写可编程只读存储器(erasable programmable read-only memory，EPROM)、卡、棒或钥匙驱动器等)。
本文描述的各种存储介质可代表用于存储信息的一个或多个设备和/或其它机器可读介质。术语“机器可读介质”可以包括但不限于：无线信道和能够存储、包含和/或承载指令和/或数据的各种其它介质。
应理解，本申请实施例中提及的处理器可以是中央处理单元(central processing unit，CPU)，还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、 分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解，本申请实施例中提及的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)。例如，RAM可以用作外部高速缓存。作为示例而非限定，RAM可以包括如下多种形式：静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。
需要说明的是，当处理器为通用处理器、DSP、ASIC、FPGA或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件时，存储器(存储模块)可以集成在处理器中。
还需要说明的是，本文描述的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的保护范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。此外，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部 分地产生按照本发明实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。例如，所述计算机可以是个人计算机，服务器，或者网络设备等。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，(SSD))等。例如，前述的可用介质可以包括但不限于：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (37)

  1. 一种小区重选方法，其特征在于，包括：
    终端设备接收网络设备发送的第一指示信息，所述第一指示信息用于指示第一小区的初始带宽部分的信息，其中，所述第一小区为第二小区的邻区，所述第二小区为所述终端设备当前驻留的小区；
    所述终端设备根据所述终端设备的类型和所述第一指示信息确定是否重选至所述第一小区。
  2. 根据权利要求1所述的方法，其特征在于，所述终端设备根据所述终端设备的类型和所述第一指示信息确定是否重选至所述第一小区，包括：
    当所述终端设备检测到所述第一小区满足重选测量准则时，
    如果所述终端设备的类型不支持所述第一小区的初始带宽部分，则所述终端设备不测量所述第一小区；
    如果所述终端设备的类型支持所述第一小区的初始带宽部分，则所述终端设备测量所述第一小区。
  3. 根据权利要求1中所述的方法，其特征在于，所述终端设备根据所述终端设备的类型和所述第一指示信息确定是否重选至所述第一小区，包括：
    当所述终端设备确定所述第一小区为目标小区，如果所述终端设备的类型不支持所述第一小区的初始带宽部分，则所述终端设备不重选到所述第一小区；
    如果所述终端设备的类型支持所述第一小区的初始带宽部分，则所述终端设备从所述第二小区重选到所述第一小区。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述终端设备的类型为第一类型终端设备或第二类型终端设备，所述第一类型终端设备与所述第二类型终端设备的带宽能力不同。
  5. 根据权利要求1至4中任一项所述的方法，其特征在于，所述第一小区的初始带宽部分的信息包括以下一个或多个信息：
    所述第一小区的初始带宽部分的带宽宽度、所述第一小区的初始带宽部分的类型。
  6. 根据权利要求5中所述的方法，其特征在于，所述第一小区的初始带宽部分的类型包括：
    支持第一类型终端设备驻留的初始带宽部分、支持第二类型终端设备驻留的初始带宽部分和同时支持所述第一类型终端设备和所述第二类型终端设备驻留的初始带宽部分。
  7. 一种小区重选方法，其特征在于，包括：
    网络设备向终端设备发送第一指示信息，所述第一指示信息用于指示第一小区的初始带宽部分的信息，其中，所述第一小区为第二小区的邻区，所述第二小区为所述终端设备当前驻留的小区。
  8. 根据权利要求7所述的方法，其特征在于，所述第一小区的初始带宽部分的信息包括以下一个或多个信息：
    所述第一小区的初始带宽部分的带宽宽度、所述第一小区的初始带宽部分的类型。
  9. 根据权利要求8所述的方法，其特征在于，所述第一小区的初始带宽部分的类型包括：
    支持第一类型终端设备驻留的初始带宽部分、支持第二类型终端设备驻留的初始带宽部分和同时支持所述第一类型终端设备和所述第二类型终端设备驻留的初始带宽部分，其中，所述第一类型终端设备与所述第二类型终端设备的带宽能力不同。
  10. 一种小区初始接入方法，其特征在于，包括：
    终端设备从网络设备接收第一同步信号块，所述第一同步信号块包括第一指示信息，所述第一指示信息用于指示第一小区的小区类型，所述第一小区为第二同步信号块定义的小区；所述第一同步信号块包括第二指示信息，所述第二指示信息用于指示所述第二同步信号块的位置；其中，所述第一同步信号块为未定义小区的同步信号块，所述第二同步信号块为定义小区的同步信号块；
    所述终端设备根据所述终端设备的类型和所述第一小区的小区类型确定是否去所述第二同步信号块的位置搜索所述第二同步信号块。
  11. 根据权利要求10所述的方法，其特征在于，所述终端设备的类型为第一类型终端设备或第二类型终端设备，所述第一类型终端设备与所述第二类型终端设备的带宽能力不同。
  12. 根据权利要求11所述的方法，其特征在于，所述小区类型包括：
    支持所述第一类型终端设备驻留的小区、支持所述第二类型终端设备驻留的小区和同时支持所述第一类型终端设备和所述第二类型终端设备驻留的小区。
  13. 根据权利要求10至12中任一项所述的方法，其特征在于，所述终端设备在接收第一同步信号块之前，所述方法还包括：
    所述终端设备按照预设的步长，在频域上搜索同步信号块，所述同步信号块为所述第一同步信号块。
  14. 一种小区初始接入方法，其特征在于，包括：
    网络设备向终端设备发送第一同步信号块，所述第一同步信号块包括第一指示信息，所述第一指示信息用于指示第一小区的小区类型，所述第一小区为第二同步信号块定义的小区；
    所述第一同步信号块包括第二指示信息，所述第二指示信息用于指示所述第二同步信号块的位置；
    其中，所述第一同步信号块为未定义小区的同步信号块，所述第二同步信号块为定义小区的同步信号块。
  15. 根据权利要求14所述的方法，其特征在于，所述小区类型包括：
    支持第一类型终端设备驻留的小区、支持第二类型终端设备驻留的小区和同时支持所述第一类型终端设备和所述第二类型终端设备驻留的小区，其中，所述第一类型终端设备与所述第二类型终端设备的带宽能力不同。
  16. 一种小区初始接入方法，其特征在于，包括：
    终端设备接收第三指示信息，所述第三指示信息包括第一禁止参数和第二禁止参数，其中，所述第一禁止参数用于第一类型终端设备进行第一小区的初始接入，所述第二禁止参数用于第二类型终端设备进行第一小区初始接入，所述第一类型终端设备与所述第二类 型终端设备的带宽能力不同；
    所述终端设备根据所述终端设备的类型确定使用所述第一禁止参数或所述第二禁止参数。
  17. 一种小区初始接入方法，其特征在于，包括：
    网络设备发送第三指示信息，所述第三指示信息包括第一禁止参数和第二禁止参数，其中，所述第一禁止参数用于第一类型终端设备进行第一小区的初始接入，所述第二禁止参数用于第二类型终端设备进行第一小区的初始接入，其中，所述第一类型终端设备与所述第二类型终端设备的带宽能力不同。
  18. 一种终端设备，其特征在于，包括：
    收发单元，用于接收网络设备发送的第一指示信息，所述第一指示信息用于指示第一小区的初始带宽部分的信息，其中，
    所述第一小区为第二小区的邻区，所述第二小区为所述终端设备当前驻留的小区；
    处理单元，用于根据所述终端设备的类型和所述第一指示信息确定是否重选至所述第一小区。
  19. 根据权利要求18所述的终端设备，其特征在于，所述处理单元，具体用于：当检测到所述第一小区满足重选测量准则时，
    如果所述终端设备的类型不支持所述第一小区的初始带宽部分，则不测量所述第一小区；
    如果所述终端设备的类型支持所述第一小区的初始带宽部分，则测量所述第一小区。
  20. 根据权利要求18所述的终端设备，其特征在于，所述处理单元，具体用于：当确定所述第一小区为目标小区时，
    如果所述终端设备的类型不支持所述第一小区的初始带宽部分，则控制所述终端设备不重选到所述第一小区；
    如果所述终端设备的类型支持所述第一小区的初始带宽部分，则控制所述终端设备从所述第二小区重选到所述第一小区。
  21. 根据权利要求18至20中任一项所述的终端设备，其特征在于，所述终端设备的类型为第一类型终端设备或第二类型终端设备，所述第一类型终端设备与所述第二类型终端设备的带宽能力不同。
  22. 根据权利要求18至21中任一项所述的终端设备，其特征在于，所述第一小区的初始带宽部分的信息包括以下一个或多个信息：
    所述第一小区的初始带宽部分的带宽宽度、所述第一小区的初始带宽部分的类型。
  23. 根据权利要求22中所述的终端设备，其特征在于，所述第一小区的初始带宽部分的类型包括：
    支持第一类型终端设备驻留的初始带宽部分、支持第二类型终端设备驻留的初始带宽部分和同时支持所述第一类型终端设备和所述第二类型终端设备驻留的初始带宽部分。
  24. 一种网络设备，其特征在于，包括：
    收发单元，用于向终端设备发送第一指示信息，所述第一指示信息用于指示第一小区的初始带宽部分的信息，其中，
    所述第一小区为第二小区的邻区，所述第二小区为所述终端设备当前驻留的小区。
  25. 根据权利要求24所述的网络设备，其特征在于，所述第一小区的初始带宽部分的信息包括以下一个或多个信息：
    所述第一小区的初始带宽部分的带宽宽度、所述第一小区的初始带宽部分的类型。
  26. 根据权利要求25所述的网络设备，其特征在于，所述第一小区的初始带宽部分的类型包括：
    支持第一类型终端设备驻留的初始带宽部分、支持第二类型终端设备驻留的初始带宽部分和同时支持所述第一类型终端设备和所述第二类型终端设备驻留的初始带宽部分，其中，所述第一类型终端设备与所述第二类型终端设备的带宽能力不同。
  27. 一种终端设备，其特征在于，包括：
    收发单元，用于从网络设备接收第一同步信号块，所述第一同步信号块包括第一指示信息，所述第一指示信息用于指示第一小区的小区类型，所述第一小区为第二同步信号块定义的小区；
    所述第一同步信号块包括第二指示信息，所述第二指示信息用于指示所述第二同步信号块的位置；
    其中，所述第一同步信号块为未定义小区的同步信号块，所述第二同步信号块为定义小区的同步信号块；
    处理单元，用于根据所述终端设备的类型和所述第一小区的小区类型确定是否去第二同步信号块的位置搜索所述第二同步信号块。
  28. 根据权利要求27所述的终端设备，其特征在于，所述终端设备的类型为第一类型终端设备或第二类型终端设备，所述第一类型终端设备与所述第二类型终端设备的带宽能力不同。
  29. 根据权利要求28所述的终端设备，其特征在于，所述小区类型包括：
    支持所述第一类型终端设备驻留的小区、支持所述第二类型终端设备驻留的小区和同时支持所述第一类型终端设备和所述第二类型终端设备驻留的小区。
  30. 根据权利要求27至29中任一项所述的终端设备，其特征在于，所述处理单元，还用于所述收发单元接收所述第一同步信号块之前，按照预设的步长，在频域上搜索同步信号块，所述同步信号块为所述第一同步信号块。
  31. 一种网络设备，其特征在于，包括：
    收发单元，用于向终端设备发送第一同步信号块，所述第一同步信号块包括第一指示信息，所述第一指示信息用于指示第一小区的小区类型，所述第一小区为第二同步信号块定义的小区；
    所述第一同步信号块包括第二指示信息，所述第二指示信息用于指示所述第二同步信号块的位置；
    其中，所述第一同步信号块为未定义小区的同步信号块，所述第二同步信号块为定义小区的同步信号块。
  32. 根据权利要求31所述的网络设备，其特征在于，所述小区类型包括：
    支持第一类型终端设备驻留的小区、支持第二类型终端设备驻留的小区和同时支持所述第一类型终端设备和所述第二类型终端设备驻留的小区，其中，所述第一类型终端设备与所述第二类型终端设备的带宽能力不同。
  33. 一种终端设备，其特征在于，包括：
    收发单元，用于接收网络设备发送的第三指示信息，所述第三指示信息包括第一禁止参数和第二禁止参数，其中，所述第一禁止参数用于第一类型终端设备进行第一小区的初始接入，所述第二禁止参数用于第二类型终端设备进行第一小区的初始接入，所述第一类型终端设备与所述第二类型终端设备的带宽能力不同；
    处理单元，用于根据所述终端设备的类型确定使用所述第一禁止参数或所述第二禁止参数。
  34. 一种网络设备，其特征在于，包括：
    收发单元，用于向终端设备发送第三指示信息，所述第三指示信息包括第一禁止参数和第二禁止参数，其中，所述第一禁止参数用于第一类型终端设备进行第一小区的初始接入，所述第二禁止参数用于第二类型终端设备进行第一小区的初始接入，其中，所述第一类型终端设备与所述第二类型终端设备的带宽能力不同。
  35. 一种通信设备，其特征在于，包括处理器，所述处理器与存储器耦合，所述存储器用于存储计算机程序或指令，所述处理器用于执行存储器中的所述计算机程序或指令，使得
    权利要求1至6中任一项所述的方法被执行，或
    权利要求7至9中任一项所述的方法被执行，或
    权利要求10至13中任一项所述的方法被执行，或
    权利要求14或15所述的方法被执行，或
    权利要求16所述的方法被执行，或
    权利要求17所述的方法被执行。
  36. 一种计算机可读存储介质，其特征在于，存储有计算机程序或指令，当计算机读取并执行所述计算机程序或指令时，使得
    权利要求1至6中任一项所述的方法被执行，或
    权利要求7至9中任一项所述的方法被执行，或
    权利要求10至13中任一项所述的方法被执行，或
    权利要求14或15所述的方法被执行，或
    权利要求16所述的方法被执行，或
    权利要求17所述的方法被执行。
  37. 一种芯片系统，其特征在于，包括：处理器，用于从存储器中调用并运行计算机程序，
    使得安装有所述芯片系统的通信设备执行
    权利要求1至6中任一项所述的方法或
    权利要求7至9中任一项所述的方法或
    权利要求10至13中任一项所述的方法或
    权利要求14或15所述的方法或
    权利要求16所述的方法或
    权利要求17所述的方法。
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CN114846851A (zh) 2022-08-02
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US20220330133A1 (en) 2022-10-13
CN116261191A (zh) 2023-06-13

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