CN109392138B - Data transmission method, equipment and system - Google Patents

Data transmission method, equipment and system Download PDF

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Publication number
CN109392138B
CN109392138B CN201710686881.0A CN201710686881A CN109392138B CN 109392138 B CN109392138 B CN 109392138B CN 201710686881 A CN201710686881 A CN 201710686881A CN 109392138 B CN109392138 B CN 109392138B
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frequency domain
domain resource
resource
frequency
bandwidth
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CN109392138A (en
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李新县
唐浩
唐臻飞
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A method, a device and a system for data transmission relate to the technical field of communication, and the method comprises the step that a network device sends control information to a terminal device, wherein the control information is used for scheduling a third frequency domain resource, the third frequency domain resource is a transmission resource of system information on a frequency domain, the third frequency domain resource and a second frequency domain resource are located in the range of a first frequency domain resource, the second frequency domain resource is a transmission resource of the control information on the frequency domain, the first frequency domain resource is determined according to a first frequency domain position and the bandwidth size of the first frequency domain resource, and the first frequency domain position is in the frequency domain resource of a synchronous signal block or the second frequency domain resource. And the terminal equipment determines the first frequency domain resource according to the first frequency domain position and the bandwidth size of the first frequency domain resource, and receives the control information sent by the network equipment. And the network equipment and the terminal equipment transmit the system information on the third frequency domain resource. By the technical scheme, the accuracy of the terminal equipment for receiving the system information is improved.

Description

Data transmission method, equipment and system
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method, a device, and a system for data transmission.
Background
In a Long Term Evolution (LTE) system, in a process of accessing a base station, a Master Information Block (MIB) sent by a base station to a terminal device on a Physical Broadcast Channel (PBCH) includes a carrier bandwidth, and the base station schedules system information on the carrier bandwidth to send to the terminal device, and since the carrier bandwidth is at most 20 megahertz (MHz) and a bandwidth capability supported by the terminal device can reach 20MHz, the terminal device can receive the system information on the carrier bandwidth according to control information, and thus can obtain parameter information of an access base station from the system information.
In a Next Radio (NR) system, when a terminal device accesses a base station, a bandwidth capability of the terminal device may be smaller than a bandwidth of an accessed carrier, and a system message may be scheduled on any time-frequency resource in the carrier bandwidth, so that the terminal device may not receive system information, and the terminal device may not access the base station, which may affect normal communication of a user.
Disclosure of Invention
The embodiment of the application provides a data transmission method, equipment and a system, which are beneficial to receiving system information when the maximum bandwidth capacity of terminal equipment does not support carrier bandwidth.
In a first aspect, an embodiment of the present application provides a data transmission method, including:
the terminal device determines a first frequency domain resource according to a first frequency domain position and a bandwidth size of the first frequency domain resource, and then the terminal device is arranged on a third frequency domain resource to receive system information, wherein the first frequency domain resource comprises a second frequency domain resource and a third frequency domain resource, the second frequency domain resource is a transmission resource of control information on a frequency domain, the third frequency domain resource is a transmission resource of the system information on a frequency domain, the control information is used for scheduling the third frequency domain resource, and the first frequency domain position is in the frequency domain resource of the synchronization signal block or the second frequency domain resource.
The terminal equipment can determine the first frequency domain resource according to the first frequency domain position and the bandwidth size of the first frequency domain resource, so that the terminal equipment can determine the third frequency domain resource according to the control information, and the possibility that the terminal equipment can correctly receive the system information sent by the base station is improved.
Based on the first aspect, in a possible design, the terminal device may obtain the first frequency domain location by indicating through the network device, and optionally, the terminal device receives first indication information sent by the network device on a physical broadcast channel, where the first indication information is used to indicate the first frequency domain location; or the first frequency domain position is obtained by the terminal equipment in a mode of predefining the first frequency domain position.
Based on the first aspect, in one possible design, the first frequency domain location is a lowest frequency domain location of the first frequency domain resource and a lowest frequency domain location of the second frequency domain resource; or the first frequency domain position is a central frequency domain position of the first frequency domain resource and a central frequency domain position of the second frequency domain resource; or the first frequency domain position is the highest frequency domain position of the first frequency domain resource and the highest frequency domain position of the second frequency domain resource; or, the first frequency domain position is a lowest frequency domain position of the first frequency domain resource and a lowest frequency domain position of the synchronization signal block; or, the first frequency domain position is a central frequency domain position of the first frequency domain resource and a central frequency domain position of the synchronization signal block; or, the first frequency domain position is a highest frequency domain position of the first frequency domain resource and a highest frequency domain position of the synchronization signal block.
Based on the first aspect, in a possible design, the bandwidth size of the first frequency domain resource may be predefined, or may be notified by the network device, the terminal device receives second indication information sent by the network device, where the second indication information is used to indicate the bandwidth size of the first frequency domain resource, the bandwidth size of the first frequency domain resource is one of predefined M bandwidth sizes, and the bandwidth size of the first frequency domain resource is not greater than the minimum terminal device bandwidth capability in a carrier frequency range where the first frequency domain resource is located, where M is a positive integer greater than or equal to 1; when the bandwidth of the first frequency domain resource is predefined, optionally, the bandwidth of the first frequency domain resource is predefined as the bandwidth capability of the minimum terminal device in the carrier frequency range where the first frequency domain resource is located; or the bandwidth size of the first frequency domain resource is predefined as the bandwidth size of the second frequency domain resource, and the bandwidth size of the second frequency domain resource is informed in a physical broadcast channel; alternatively, the bandwidth size of the first frequency domain resource is predefined as the maximum carrier bandwidth within the carrier frequency range of the first frequency domain resource.
Based on the first aspect, in one possible design, the terminal device determines the size of the resource block allocation information in the control information according to the bandwidth size of the first frequency domain resource.
By the technical scheme, the terminal equipment is facilitated to acquire the control information.
Based on the first aspect, in one possible design, the terminal device receives third indication information sent by the network device, where the third indication information is used to indicate an interval between the terminal device receiving the control information and receiving the system information; alternatively, the first and second electrodes may be,
the interval time between the terminal equipment receiving the control information and receiving the system information is predefined.
Based on the first aspect, in one possible design, the interval time is greater than or equal to the maximum terminal device radio frequency switching time.
In a second aspect, an embodiment of the present application provides a method for data transmission, including:
the network device sends control information to the terminal device and sends system information to the terminal device on a third frequency domain resource, wherein the control information is used for scheduling the third frequency domain resource, the third frequency domain resource is a transmission resource of the system information on a frequency domain, the third frequency domain resource and a second frequency domain resource are in the range of the first frequency domain resource, the second frequency domain resource is a transmission resource of the control information on a frequency domain, the first frequency domain resource is determined according to a first frequency domain position and the bandwidth size of the first frequency domain resource, and the first frequency domain position is in the frequency domain resource of the synchronization signal block or the second frequency domain resource.
The network device can schedule the system information on the third frequency domain resource to be sent to the terminal device, and the third frequency domain resource is in the first frequency domain resource, and the first frequency domain resource can be determined by the first frequency domain position and the bandwidth size of the first frequency domain resource, so that the possibility that the terminal device can correctly receive the system information is improved.
Based on the second aspect, in one possible design, the network device sends first indication information to the terminal device on a physical broadcast channel, where the first indication information is used to indicate a first frequency domain location; alternatively, the first frequency domain location is predefined.
Based on the second aspect, in one possible design, the first frequency domain location is a lowest frequency domain location of the first frequency domain resource and a lowest frequency domain location of the second frequency domain resource; or the first frequency domain position is a central frequency domain position of the first frequency domain resource and a central frequency domain position of the second frequency domain resource; or the first frequency domain position is the highest frequency domain position of the first frequency domain resource and the highest frequency domain position of the second frequency domain resource; or, the first frequency domain position is a lowest frequency domain position of the first frequency domain resource and a lowest frequency domain position of the synchronization signal block; or, the first frequency domain position is a central frequency domain position of the first frequency domain resource and a central frequency domain position of the synchronization signal block; or, the first frequency domain position is a highest frequency domain position of the first frequency domain resource and a highest frequency domain position of the synchronization signal block.
Based on the second aspect, in a possible design, the network device sends second indication information to the terminal device, where the second indication information is used to indicate a bandwidth size of the first frequency domain resource, the bandwidth size of the first frequency domain resource is one of predefined M bandwidth sizes, and the bandwidth size of the first frequency domain resource is not greater than a minimum terminal device bandwidth capability within a carrier frequency range where the first frequency domain resource is located, and M is a positive integer greater than or equal to 1; or the bandwidth of the first frequency domain resource is predefined as the minimum terminal equipment bandwidth capacity in the carrier frequency range of the first frequency domain resource; or the bandwidth size of the first frequency domain resource is predefined as the bandwidth size of the second frequency domain resource, and the bandwidth size of the second frequency domain resource is informed in a physical broadcast channel; alternatively, the bandwidth size of the first frequency domain resource is predefined as the maximum carrier bandwidth within the carrier frequency range of the first frequency domain resource.
Based on the second aspect, in one possible design, the network device determines the size of the resource block allocation information in the control information according to the bandwidth size of the first frequency domain resource.
By the technical scheme, the terminal equipment is facilitated to acquire the control information.
Based on the second aspect, in one possible design, the network device sends time indication information to the terminal device, where the time indication information is used to indicate an interval between the terminal device receiving the control information and receiving the system information; or the interval time between the terminal equipment receiving the control information and receiving the system information is predefined.
Based on the second aspect, the interval time is greater than or equal to the maximum terminal device radio frequency switching time.
In a third aspect, an embodiment of the present application provides a method for data transmission, where the method includes:
the terminal device receives control information sent by the network device, and receives system information sent by the network device on a first frequency domain resource, where the control information is used to indicate an offset value, the offset value is an offset value between the first frequency domain resource and a second frequency domain resource, or the offset value is an offset value between the first frequency domain resource and a third frequency domain resource, the first frequency domain resource is a transmission resource of the system information on a frequency domain, the second frequency domain resource is a transmission resource of the control information on the frequency domain, the third frequency domain resource is a transmission resource of a synchronization signal on the frequency domain, and the synchronization signal is blind-detected by the terminal device in an initial access process to the base station.
According to the embodiment of the application, the transmission resource of the system information on the frequency domain can be determined through the offset value and the bandwidth size, so that the possibility that the terminal equipment correctly receives the system information sent by the base station is improved.
Based on the third aspect, in one possible design, the offset value is an offset value between a lowest frequency domain position of the first frequency domain resource and a lowest frequency domain position of the second frequency domain resource; or the offset value is an offset value between the center frequency domain position of the first frequency domain resource and the center frequency domain position of the second frequency domain resource; or the offset value is an offset value between the highest frequency domain position of the first frequency domain resource and the highest frequency domain position of the second frequency domain resource; or the offset value is an offset value between the lowest frequency domain position of the first frequency domain resource and the lowest frequency domain position of the third frequency domain resource; or the offset value is an offset value between the central frequency domain position of the first frequency domain resource and the central frequency domain position of the third frequency domain resource; or, the offset value is an offset value between the highest frequency domain position of the first frequency domain resource and the highest frequency domain position of the third frequency domain resource.
Based on the third aspect, in a possible design, the terminal device receives first indication information sent by the network device, where the first indication information is used to indicate a bandwidth size of the first frequency domain resource, the bandwidth size of the first frequency domain resource is one of predefined K bandwidth sizes, the bandwidth size of the first frequency domain resource is not greater than a minimum terminal device bandwidth capability within a carrier frequency range where the first frequency domain resource is located, and K is a positive integer greater than or equal to 1; alternatively, the first and second electrodes may be,
the bandwidth of the first frequency domain resource is predefined as the minimum terminal equipment bandwidth capacity in the carrier frequency range of the first frequency domain resource; alternatively, the bandwidth size of the first frequency domain resource is predefined as the bandwidth size of the second frequency domain resource, which is signaled in the physical broadcast channel.
Based on the third aspect, in one possible design, the offset value is not greater than the maximum number of physical resource blocks supported in the carrier frequency range where the first frequency domain resource is located.
Based on the third aspect, in a possible design, the terminal device receives second indication information sent by the network device, where the second indication information is used to indicate an interval between the terminal device receiving the control information and receiving the system information; or the interval time between the terminal equipment receiving the control information and receiving the system information is predefined.
Based on the third aspect, in one possible design, the interval time is greater than or equal to the maximum terminal device radio frequency switching time. The technical scheme improves the reliability of communication.
In a fourth aspect, an embodiment of the present application provides a data transmission method, including:
the network device sends control information to the terminal device, and sends system information to the terminal device, where the control information is used to indicate an offset value, where the offset value is an offset value between a first frequency domain resource and a second frequency domain resource, or the offset value is an offset value between the first frequency domain resource and a third frequency domain resource, the first frequency domain resource is a transmission resource of the system information in a frequency domain, the second frequency domain resource is a transmission resource of the control information in the frequency domain, the third frequency domain resource is a transmission resource of a synchronization signal in the frequency domain, and the synchronization signal is blind-detected by the terminal device in a process of initially accessing the base station.
By the technical scheme, the possibility that the terminal equipment correctly receives the system information sent by the base station is improved.
Based on the fourth aspect, in one possible design, the offset value is an offset value between a lowest frequency domain position of the first frequency domain resource and a lowest frequency domain position of the second frequency domain resource; or the offset value is an offset value between the center frequency domain position of the first frequency domain resource and the center frequency domain position of the second frequency domain resource; or the offset value is an offset value between the highest frequency domain position of the first frequency domain resource and the highest frequency domain position of the second frequency domain resource; or the offset value is an offset value between the lowest frequency domain position of the first frequency domain resource and the lowest frequency domain position of the third frequency domain resource; or the offset value is an offset value between the central frequency domain position of the first frequency domain resource and the central frequency domain position of the third frequency domain resource; or, the offset value is an offset value between the highest frequency domain position of the first frequency domain resource and the highest frequency domain position of the third frequency domain resource.
Based on the fourth aspect, in a possible design, the network device sends first indication information to the terminal device, where the first indication information is used to indicate a bandwidth size of the first frequency domain resource, the bandwidth size of the first frequency domain resource is one of predefined K bandwidth sizes, the bandwidth size of the first frequency domain resource is not greater than a minimum terminal device bandwidth capability within a carrier frequency range where the first frequency domain resource is located, and K is a positive integer greater than or equal to 1; alternatively, the first and second electrodes may be,
the bandwidth of the first frequency domain resource is predefined as the minimum terminal equipment bandwidth capacity in the carrier frequency range of the first frequency domain resource; alternatively, the first and second liquid crystal display panels may be,
the bandwidth size of the first frequency domain resource is predefined as the bandwidth size of the second frequency domain resource, which is signaled in the physical broadcast channel.
Based on the fourth aspect, in one possible design, the offset value is not greater than the maximum number of physical resource blocks supported in the carrier frequency range where the first frequency domain resource is located.
Based on the fourth aspect, in a possible design, the network device sends second indication information to the terminal device, where the second indication information is used to indicate an interval between the terminal device receiving the control information and receiving the system information; or the interval time between the terminal equipment receiving the control information and receiving the system information is predefined.
Based on the fourth aspect, in one possible design, the interval time is greater than or equal to the maximum radio frequency switching time of the terminal device. The technical scheme improves the reliability of communication.
In a fifth aspect, a terminal device in an embodiment of the present application includes: the processing unit is used for determining a first frequency domain resource according to a first frequency domain position and the bandwidth size of the first frequency domain resource, and sending a receiving instruction to the transceiving unit, wherein the first frequency domain resource comprises a second frequency domain resource and a third frequency domain resource, the second frequency domain resource is a transmission resource of control information on a frequency domain, the third frequency domain resource is a transmission resource of system information on a frequency domain, the control information is used for scheduling the third frequency domain resource, and the first frequency domain position is in the frequency domain resource of a synchronization signal block or the second frequency domain resource; the receiving and sending unit is used for receiving the system information sent by the network equipment on the third frequency domain resource according to the receiving instruction sent by the processing unit.
In a possible design based on the fifth aspect, the transceiving unit is further configured to receive first indication information sent by the network device on a physical broadcast channel, where the first indication information is used to indicate a first frequency domain location; alternatively, the first frequency-domain location is predefined.
Based on the fifth aspect, in one possible design, the first frequency domain location is a lowest frequency domain location of the first frequency domain resource and a lowest frequency domain location of the second frequency domain resource; or the first frequency domain position is a central frequency domain position of the first frequency domain resource and a central frequency domain position of the second frequency domain resource; or the first frequency domain position is the highest frequency domain position of the first frequency domain resource and the highest frequency domain position of the second frequency domain resource; or, the first frequency domain position is a lowest frequency domain position of the first frequency domain resource and a lowest frequency domain position of the synchronization signal block; or, the first frequency domain position is a central frequency domain position of the first frequency domain resource and a central frequency domain position of the synchronization signal block; or, the first frequency domain position is a highest frequency domain position of the first frequency domain resource and a highest frequency domain position of the synchronization signal block. Based on the fifth aspect, in a possible design, the transceiver unit is further configured to receive second indication information sent by the network device, where the second indication information is used to indicate a bandwidth size of the first frequency domain resource, the bandwidth size of the first frequency domain resource is one of predefined M bandwidth sizes, and the bandwidth size of the first frequency domain resource is not greater than a minimum terminal device bandwidth capability within a carrier frequency range where the first frequency domain resource is located, and M is a positive integer greater than or equal to 1; alternatively, the first and second electrodes may be,
the bandwidth of the first frequency domain resource is predefined as the minimum terminal equipment bandwidth capacity in the carrier frequency range of the first frequency domain resource; alternatively, the first and second electrodes may be,
the bandwidth size of the first frequency domain resource is predefined as the bandwidth size of the second frequency domain resource, which is informed in the physical broadcast channel; alternatively, the first and second electrodes may be,
the bandwidth size of the first frequency domain resource is predefined as the maximum carrier bandwidth within the carrier frequency range of the first frequency domain resource.
In a possible design based on the fifth aspect, the processing unit is further configured to determine a size of resource block allocation information in the control information according to a bandwidth size of the first frequency domain resource.
Based on the fifth aspect, in a possible design, the transceiver unit is further configured to receive third indication information sent by the network device, where the third indication information is used to indicate an interval between the terminal device receiving the control information and receiving the system information; alternatively, the first and second electrodes may be,
the interval time between the terminal equipment receiving the control information and receiving the system information is predefined.
Based on the fifth aspect, in one possible design, the interval time is greater than or equal to the maximum terminal device radio frequency switching time.
It should be noted that, in the fifth aspect and any one of the possible designs of the fifth aspect, the processing unit corresponds to a processor in a hardware device, and the transceiver unit corresponds to a transceiver in a hardware module.
On the other hand, an embodiment of the present application further provides a terminal device, including a processor, a transceiver, and a memory, where the memory is used to store program instructions and information received and sent by the transceiver, and the processor is used to execute the program instructions stored in the memory, so as to implement the technical solution of the first aspect of the embodiment of the present application or any one of the possible designs provided by the first aspect.
In another aspect, an embodiment of the present application further provides a computer storage medium, configured to store the program of the first aspect or any one of the possible design solutions provided in the first aspect.
In a further aspect, an embodiment of the present application provides a chip, where the chip is coupled to a transceiver in a network device, and is configured to implement the technical solution of the first aspect or any one of the possible designs provided by the first aspect of the embodiment of the present application. It should be understood that "coupled" in the embodiments of the present application means that two components are directly or indirectly joined to each other. The combination may be fixed or movable, which may allow flowing fluid, electrical or other types of signals to be communicated between the two components.
In a sixth aspect, a network device, a processing unit, and a transceiver unit in an embodiment of the present application, where the processing unit is configured to send an instruction to the transceiver unit; the transceiver unit is configured to send control information to the terminal device after receiving the sending instruction, and send system information to the terminal device on a third frequency domain resource, where the control information is used to schedule the third frequency domain resource, the third frequency domain resource is a transmission resource of the system information in a frequency domain, the third frequency domain resource and the second frequency domain resource are within a range of the first frequency domain resource, the second frequency domain resource is a transmission resource of the control information in a frequency domain, the first frequency domain resource is determined according to a first frequency domain position and a bandwidth size of the first frequency domain resource, and the first frequency domain position is in a frequency domain resource of the synchronization signal block or the second frequency domain resource.
Based on the sixth aspect, in one possible design, the transceiver unit is further configured to transmit first indication information to the terminal device on a physical broadcast channel, where the first indication information is used to indicate a first frequency domain location; alternatively, the first frequency domain location is predefined.
In a possible design based on the sixth aspect, the first frequency domain location is a lowest frequency domain location of the first frequency domain resource and a lowest frequency domain location of the second frequency domain resource; or the first frequency domain position is a central frequency domain position of the first frequency domain resource and a central frequency domain position of the second frequency domain resource; or the first frequency domain position is the highest frequency domain position of the first frequency domain resource and the highest frequency domain position of the second frequency domain resource; or, the first frequency domain position is a lowest frequency domain position of the first frequency domain resource and a lowest frequency domain position of the synchronization signal block; or, the first frequency domain position is a central frequency domain position of the first frequency domain resource and a central frequency domain position of the synchronization signal block; or, the first frequency domain position is a highest frequency domain position of the first frequency domain resource and a highest frequency domain position of the synchronization signal block.
Based on the sixth aspect, in a possible design, the transceiver unit is further configured to send second indication information to the terminal device, where the second indication information is used to indicate a bandwidth size of the first frequency domain resource, the bandwidth size of the first frequency domain resource is one of predefined M bandwidth sizes, the bandwidth size of the first frequency domain resource is not greater than a minimum terminal device bandwidth capability within a carrier frequency range where the first frequency domain resource is located, and M is a positive integer greater than or equal to 1; alternatively, the first and second electrodes may be,
the bandwidth of the first frequency domain resource is predefined as the minimum terminal equipment bandwidth capacity in the carrier frequency range of the first frequency domain resource; alternatively, the first and second electrodes may be,
the bandwidth size of the first frequency domain resource is predefined as the bandwidth size of the second frequency domain resource, which is informed in the physical broadcast channel; alternatively, the first and second electrodes may be,
the bandwidth size of the first frequency domain resource is predefined as the maximum carrier bandwidth within the carrier frequency range of the first frequency domain resource.
In a possible design based on the sixth aspect, the processing unit is further configured to determine a size of the resource block allocation information in the control information according to a bandwidth size of the first frequency domain resource.
Based on the sixth aspect, in a possible design, the transceiver unit is further configured to send time indication information by the terminal device, where the time indication information is used to indicate an interval between the terminal device receiving the control information and receiving the system information; alternatively, the first and second electrodes may be,
the interval between the terminal equipment receiving the control information and the system information is predefined.
Based on the sixth aspect, in one possible design, the interval time is greater than or equal to the maximum terminal device radio frequency switching time.
In any of the possible designs of the sixth aspect and the sixth aspect, the processing unit corresponds to a processor in a hardware device, and the transceiver unit corresponds to a transceiver in a hardware module.
On the other hand, an embodiment of the present application further provides a network device, including a processor, a transceiver, and a memory, where the memory is used to store program instructions and information received and transmitted by the transceiver, and the processor is used to execute the program instructions stored in the memory, so as to implement the technical solution of any one of the possible designs provided by the second aspect or the second aspect of the embodiment of the present application.
In another aspect, the present application further provides a computer storage medium for storing the program of the second aspect or any one of the possible design solutions provided in the second aspect.
In a further aspect, an embodiment of the present application provides a chip, which is coupled to a transceiver in a terminal device, and is configured to implement the technical solution of any one of the possible designs provided by the second aspect or the second aspect of the embodiment of the present application. It should be understood that "coupled" in the embodiments of the present application means that two components are directly or indirectly joined to each other. The combination may be fixed or movable, which may allow flowing fluid, electrical or other types of signals to be communicated between the two components.
In a seventh aspect, the communication system of the embodiments of the present application includes a terminal device provided in any one of the possible designs provided in the fifth aspect and the fifth aspect, and a network device provided in any one of the possible designs provided in the sixth aspect and the sixth aspect.
In an eighth aspect, a terminal device provided in an embodiment of the present application includes: the processing unit is configured to send a receiving indication to the transceiver unit, and the transceiver unit is configured to receive control information sent by the network device after receiving the receiving indication, and receive system information sent by the network device on a first frequency domain resource, where the control information is used to indicate an offset value, where the offset value is an offset value between the first frequency domain resource and a second frequency domain resource, or the offset value is an offset value between the first frequency domain resource and a third frequency domain resource, the first frequency domain resource is a transmission resource of the system information in a frequency domain, the second frequency domain resource is a transmission resource of the control information in the frequency domain, the third frequency domain resource is a transmission resource of a synchronization signal in the frequency domain, and the synchronization signal is blind-detected by the terminal device in an initial access procedure of the base station.
In a possible design based on the eighth aspect, the offset value is an offset value between a lowest frequency domain position of the first frequency domain resource and a lowest frequency domain position of the second frequency domain resource; or the offset value is an offset value between the center frequency domain position of the first frequency domain resource and the center frequency domain position of the second frequency domain resource; or the offset value is an offset value between the highest frequency domain position of the first frequency domain resource and the highest frequency domain position of the second frequency domain resource; or the offset value is an offset value between the lowest frequency domain position of the first frequency domain resource and the lowest frequency domain position of the third frequency domain resource; or the offset value is an offset value between the central frequency domain position of the first frequency domain resource and the central frequency domain position of the third frequency domain resource; or, the offset value is an offset value between the highest frequency domain position of the first frequency domain resource and the highest frequency domain position of the third frequency domain resource.
Based on the eighth aspect, in a possible design, the transceiver unit is further configured to receive first indication information sent by the network device, where the first indication information is used to indicate a bandwidth size of the first frequency domain resource, the bandwidth size of the first frequency domain resource is one of predefined K bandwidth sizes, the bandwidth size of the first frequency domain resource is not greater than a minimum terminal device bandwidth capability within a carrier frequency range where the first frequency domain resource is located, and K is a positive integer greater than or equal to 1; alternatively, the first and second electrodes may be,
the bandwidth of the first frequency domain resource is predefined as the minimum terminal equipment bandwidth capacity in the carrier frequency range of the first frequency domain resource; alternatively, the bandwidth size of the first frequency domain resource is predefined as the bandwidth size of the second frequency domain resource, which is signaled in the physical broadcast channel.
Based on the eighth aspect, in one possible design, the offset value is not greater than the maximum number of physical resource blocks supported in the carrier frequency range where the first frequency domain resource is located.
Based on the eighth aspect, in a possible design, the transceiver unit is further configured to receive second indication information sent by the network device, where the second indication information is used to indicate an interval between the terminal device receiving the control information and receiving the system information; or the interval time between the terminal equipment receiving the control information and receiving the system information is predefined.
Based on the eighth aspect, in one possible design, the interval time is greater than or equal to the maximum terminal device radio frequency switching time. The technical scheme improves the reliability of communication.
In any one of the eighth aspect and the eighth aspect, the processing unit corresponds to a processor in the hardware device, and the transceiver unit corresponds to a transceiver in the hardware module.
On the other hand, an embodiment of the present application further provides a terminal device, including a processor, a transceiver, and a memory, where the memory is used to store program instructions and information received and transmitted by the transceiver, and the processor is used to execute the program instructions stored in the memory, so as to implement any one of the technical solutions that may be designed according to the third aspect or any one of the third aspects of the embodiment of the present application.
In another aspect, an embodiment of the present application further provides a computer storage medium, configured to store a program of any one of the possible design solutions provided in the third aspect or the third aspect.
In a further aspect, an embodiment of the present application provides a chip, where the chip is coupled to a transceiver in a network device, and is configured to implement any one of the technical solutions that is possibly designed and provided by the third aspect of the embodiment of the present application. It should be understood that "coupled" in the embodiments of the present application means that two components are directly or indirectly joined to each other. The combination may be fixed or movable, which may allow flowing fluid, electrical or other types of signals to be communicated between the two components.
In a ninth aspect, a network device in an embodiment of the present application includes: the processing unit is used for sending an instruction to the transceiving unit, the transceiving unit sends control information to the terminal device after receiving the sending instruction sent by the processing unit, and sends system information to the terminal device, the control information is used for indicating an offset value, the offset value is an offset value between a first frequency domain resource and a second frequency domain resource, or the offset value is an offset value between the first frequency domain resource and a third frequency domain resource, the first frequency domain resource is a transmission resource of the system information on a frequency domain, the second frequency domain resource is a transmission resource of the control information on the frequency domain, the third frequency domain resource is a transmission resource of a synchronization signal on the frequency domain, and the synchronization signal is detected by the terminal device in a blind manner in an initial access process of the terminal device to the base station.
By the technical scheme, the possibility that the terminal equipment correctly receives the system information sent by the base station is improved.
In a possible design based on the ninth aspect, the offset value is an offset value between a lowest frequency domain position of the first frequency domain resource and a lowest frequency domain position of the second frequency domain resource; or the offset value is an offset value between the center frequency domain position of the first frequency domain resource and the center frequency domain position of the second frequency domain resource; or the offset value is an offset value between the highest frequency domain position of the first frequency domain resource and the highest frequency domain position of the second frequency domain resource; or the offset value is an offset value between the lowest frequency domain position of the first frequency domain resource and the lowest frequency domain position of the third frequency domain resource; or the offset value is an offset value between the central frequency domain position of the first frequency domain resource and the central frequency domain position of the third frequency domain resource; or, the offset value is an offset value between the highest frequency domain position of the first frequency domain resource and the highest frequency domain position of the third frequency domain resource.
Based on the ninth aspect, in a possible design, the transceiver unit is further configured to send first indication information to the terminal device, where the first indication information is used to indicate a bandwidth size of the first frequency domain resource, the bandwidth size of the first frequency domain resource is one of predefined K bandwidth sizes, the bandwidth size of the first frequency domain resource is not greater than a minimum terminal device bandwidth capability within a carrier frequency range where the first frequency domain resource is located, and K is a positive integer greater than or equal to 1; alternatively, the first and second electrodes may be,
the bandwidth of the first frequency domain resource is predefined as the minimum terminal equipment bandwidth capacity in the carrier frequency range of the first frequency domain resource; alternatively, the first and second electrodes may be,
the bandwidth size of the first frequency domain resource is predefined as the bandwidth size of the second frequency domain resource, which is signaled in the physical broadcast channel.
Based on the ninth aspect, in one possible design, the offset value is not greater than the maximum number of physical resource blocks supported in the carrier frequency range where the first frequency domain resource is located.
Based on the ninth aspect, in a possible design, the transceiver unit is further configured to send second indication information to the terminal device, where the second indication information is used to indicate an interval between the terminal device receiving the control information and receiving the system information; or the interval time between the terminal equipment receiving the control information and receiving the system information is predefined.
Based on the ninth aspect, in one possible design, the interval time is greater than or equal to the maximum radio frequency switching time of the terminal device. The technical scheme improves the reliability of communication.
It should be noted that, in any one of the ninth aspect and the ninth aspect, the processing unit corresponds to a processor in the hardware device, and the transceiver unit corresponds to a transceiver in the hardware module.
On the other hand, an embodiment of the present application further provides a network device, including a processor, a transceiver, and a memory, where the memory is used to store program instructions and information received and transmitted by the transceiver, and the processor is used to execute the program instructions stored in the memory, so as to implement the technical solution of any one of the possible designs provided by the fourth aspect or any one of the possible designs provided by the fourth aspect of the embodiment of the present application.
In another aspect, an embodiment of the present application further provides a computer storage medium for storing the program of the fourth aspect or any one of the possible design solutions provided in the fourth aspect.
In a further aspect, an embodiment of the present application provides a chip, where the chip is coupled to a transceiver in a terminal device, and is configured to implement the technical solution of any one of the possible designs provided in the fourth aspect or the fourth aspect of the embodiment of the present application. It should be understood that "coupled" in the embodiments of the present application means that two components are directly or indirectly joined to each other. The combination may be fixed or movable, which may allow flowing fluid, electrical or other types of signals to be communicated between the two components.
In a tenth aspect, a communication system provided in an embodiment of the present application includes a terminal device provided by any one of the possible designs provided by the eighth aspect and the eighth aspect, and a network device provided by any one of the possible designs provided by the ninth aspect and the ninth aspect.
Drawings
Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present application;
fig. 2 is a schematic flowchart of a data transmission method according to an embodiment of the present application;
FIG. 3 is a diagram illustrating a first frequency domain location according to an embodiment of the present application;
FIG. 4 is a diagram illustrating a first frequency domain location according to an embodiment of the present application;
FIG. 5 is a diagram illustrating offset values according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a first frequency domain resource according to an embodiment of the present application;
FIG. 7 is a flowchart illustrating a method for data transmission according to an embodiment of the present application;
FIG. 8 is a diagram illustrating offset values according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of a terminal device according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of a network device according to an embodiment of the present application;
fig. 11 is a schematic structural diagram of a communication system according to an embodiment of the present application;
fig. 12 is a schematic structural diagram of a terminal device according to an embodiment of the present application;
fig. 13 is a schematic structural diagram of a network device according to an embodiment of the present application;
fig. 14 is a schematic structural diagram of a communication system according to an embodiment of the present application.
Detailed Description
The embodiments of the present application will be described in detail below with reference to the drawings attached to the specification.
In the LTE system, the process of accessing the terminal device to the base station includes cell search, receiving system information, and a random access process. In the cell search process, the terminal device first blindly detects a synchronization signal, and since the resource positions of the synchronization signal in the time domain and the frequency domain are predefined, the terminal device can know the resource positions of the synchronization signal in the time domain and the frequency domain after detecting the synchronization signal, for example, the synchronization signal in the frequency domain is mapped onto 6 Physical Resource Blocks (PRBs) in the middle of the whole carrier bandwidth, and after receiving the synchronization signal sent by the base station, the terminal device obtains downlink synchronization with the cell where the base station is located, and can receive the frequency domain sent by the base station through the PBCH, where the resource position of the PBCH is fixed, for example, after receiving the synchronization signal, the terminal device can determine the resource position of the PBCH in the frequency domain according to the resource position of the synchronization signal in the frequency domain, and usually to avoid introducing more fixed resource positions, the parameters included in the MIB are usually some important parameters, such as a downlink system bandwidth, and after receiving the MIB, the terminal device obtains control information through a Physical Downlink Control Channel (PDCCH), where the control information is used to indicate a PRB transmitting the system information in the carrier bandwidth, and after receiving the control information, the terminal device can receive the system information.
The process of accessing the terminal device to the base station in the NR system is similar to the process of accessing the terminal device to the base station in the LTE system, and one terminal device accesses one carrier, however, the bandwidth capability of the terminal device may be smaller than the carrier bandwidth, which may cause the terminal device to be unable to receive the frequency domain resource of the scheduling system information in the entire system bandwidth, and thus cause the terminal device to be unable to receive the system information and to access the base station.
In order to solve the above problem, an embodiment of the present application further provides a method for sending and receiving system information. When the bandwidth capability of the terminal device does not support the carrier bandwidth in the embodiment of the present application, the transmission resource of the system information in the frequency domain can be determined by the first frequency domain position and the bandwidth size of the first frequency domain resource, which is helpful for improving the possibility that the terminal device can correctly receive the system information sent by the base station.
Some terms in the embodiments of the present application are explained below to facilitate understanding by those skilled in the art.
1. A terminal device, also called a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc., is a device that provides voice and/or data connectivity to a user, for example, a handheld device with a wireless connection function, a vehicle-mounted device, etc. Currently, some examples of terminal devices are: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm top computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (smart security), a wireless terminal in city (smart city), a wireless terminal in home (smart home), and the like.
2. A network device is a device in a wireless network, such as a Radio Access Network (RAN) node (or device) that accesses a terminal device to the wireless network. Currently, some examples of RAN nodes are: a gnb (gnnode B), a Transmission Reception Point (TRP), an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved Node B, or home Node B, HNB), a Base Band Unit (BBU), or a wireless fidelity (Wifi), an Access Point (AP), etc. In addition, in one network configuration, the RAN may include a Centralized Unit (CU) node and a Distributed Unit (DU) node. The structure separates the protocol layers of the eNB in a Long Term Evolution (LTE) system, the functions of part of the protocol layers are controlled in the CU in a centralized way, the functions of the rest part or all of the protocol layers are distributed in the DU, and the CU controls the DU in a centralized way.
3. "plurality" means two or more, and other terms are analogous. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
4. The frequency domain resource is a physical resource used for communication in the frequency domain, for example, the frequency domain resource may be a continuous physical resource block in the frequency domain, or may be a continuous physical resource block group in the frequency domain, where the physical resource block group includes at least one physical resource block, and the at least one physical resource block may be a continuous physical resource block in the frequency domain, or may be a discontinuous physical resource block in the frequency domain.
5. The transmission resource of the Control information in the frequency domain, which is also called as a Control resource set in the NR system, represents a resource for transmitting a PDCCH for scheduling a Physical Downlink Control Channel (PDSCH) in the frequency domain.
6. The system information may be named differently in different systems, which is not limited in this embodiment of the present application. For example, the system information in the embodiment of the present application may be Remaining Minimum System Information (RMSI) in the NR system; the system information in the embodiment of the present application may also be a System Information Block (SIB) in the LTE system.
It should be understood that the embodiment of the present application may be applied to, but not limited to, an NR system, and may also be applied to a communication system such as an LTE system, a long term evolution-advanced (LTE-a) system, an enhanced long term evolution-advanced (LTE-advanced) system, and may also be extended to a related cellular system such as wireless fidelity (WiFi), worldwide interoperability for microwave access (wimax), and 3rd generation partnership project (3 GPP), and a specific communication system architecture applied in the embodiment of the present application may be as shown in fig. 1, and includes a base station and at least one terminal device, which is to be noted that the number of terminal devices in the communication system shown in fig. 1 is not limited in the embodiment of the present application.
The following describes the embodiments of the present application in detail by taking a network device as a base station as an example, and when the network device is other device, the method is similar to the method for sending and receiving system information when the network device is a base station, and is not described in detail here.
As shown in fig. 2, a method for sending and receiving system information in an embodiment of the present application includes:
step 200, the base station sends control information to the terminal device, where the control information is used to schedule a third frequency domain resource, the third frequency domain resource is a transmission resource of the system information in the frequency domain, the third frequency domain resource and a second frequency domain resource are within the range of the first frequency domain resource, the second frequency domain resource is a transmission resource of the control information in the frequency domain, the first frequency domain resource is determined according to the first frequency domain position and the bandwidth size of the first frequency domain resource, and the first frequency domain position is in the frequency domain resource of the synchronization signal block or the second frequency domain resource.
Step 201, the terminal device determines the first frequency domain resource according to the first frequency domain position and the bandwidth size of the first frequency domain resource, and receives the control information sent by the base station.
Step 202, the base station sends system information to the terminal device on the third frequency domain resource, and the terminal device receives the system information sent by the base station on the third frequency domain resource.
It should be noted that, in the embodiment of the present application, a synchronization signal block is a resource used for transmitting a synchronization signal, where the synchronization signal is detected by a terminal device in a blind manner during an initial access to a base station.
In the embodiment of the present application, since the frequency domain position of the second frequency domain resource or the synchronization signal block is determined, the first frequency domain resource may be determined according to the first frequency domain position and the bandwidth size of the first frequency domain resource.
For example, the control information in the embodiment of the present application is downlink control information, and specifically in the embodiment of the present application, the downlink control information may specifically indicate which physical resource blocks in the first frequency domain resource are used for transmitting system information, where the physical resource blocks for transmitting the system information are the third frequency domain resources. Therefore, the terminal device determines the first frequency domain resource, that is, the third frequency domain resource can be determined according to the downlink control information.
It should be noted that the first frequency domain position may be predefined, for example, the first frequency domain position is a lowest frequency domain position of the first frequency domain resource and a lowest frequency domain position of the second frequency domain resource; or the first frequency domain position is a central frequency domain position of the first frequency domain resource and a central frequency domain position of the second frequency domain resource; or the first frequency domain position is the highest frequency domain position of the first frequency domain resource and the highest frequency domain position of the second frequency domain resource; or, the first frequency domain position is a lowest frequency domain position of the first frequency domain resource and a lowest frequency domain position of the synchronization signal block; or, the first frequency domain position is a central frequency domain position of the first frequency domain resource and a central frequency domain position of the synchronization signal block; or the first frequency domain position is a highest frequency domain position of the first frequency domain resource and a lowest frequency domain position of the synchronization signal block, or the first frequency domain position is a certain frequency domain position in the first frequency domain resource, and the first frequency domain position may be any one frequency domain position in the second frequency domain resource or the frequency domain resource of the synchronization signal block, which is not limited in this embodiment of the application.
The first frequency domain position may also be indicated by the base station to the terminal device, and the base station may indicate the first frequency domain position to the terminal device in a PBCH, specifically, the base station sends first indication information to the terminal device on the PBCH, where the first indication information is used to indicate the first frequency domain position, and the first frequency domain position may be used as a lowest frequency domain position of the second frequency domain resource and a lowest frequency domain position of the first frequency domain resource, or the first frequency domain position may be used as a center frequency domain position of the second frequency domain resource and a center frequency domain position of the first frequency domain resource, or the first frequency domain position may be used as a highest frequency domain position of the second frequency domain resource and a highest frequency domain position of the first frequency domain resource, and the like.
The terminal device determines the first frequency domain resource according to the first frequency domain position and the bandwidth size of the first frequency domain resource, for example, the first frequency domain position is a lowest frequency domain position of the second frequency domain resource and a lowest frequency domain position of the first frequency domain resource, the bandwidth size of the first frequency domain resource is 10MHz, and the terminal device uses the first frequency domain position as the lowest frequency domain position of the first frequency domain resource, so that the frequency domain position shifted by 10MHz to the high frequency domain position is a highest frequency domain position of the first frequency domain resource. For another example, the first frequency domain position is a central frequency domain position of the second frequency domain resource and a central frequency domain position of the first frequency domain resource, the bandwidth size of the first frequency domain resource is 10MHz, the terminal device uses the first frequency domain position as the central frequency domain position of the first frequency domain resource, uses the frequency domain position shifted to the low frequency domain position by 5MHz as the lowest frequency domain position of the first frequency domain resource, and uses the frequency domain position shifted to the high frequency domain position by 5MHz as the highest frequency domain position of the first frequency domain resource. For another example, the first frequency domain position is a highest frequency domain position of the second frequency domain resource and a highest frequency domain position of the first frequency domain resource, the bandwidth size of the first frequency domain resource is 10MHz, and the terminal device uses the first frequency domain position as the highest frequency domain position of the first frequency domain resource, and uses the frequency domain position shifted to the low frequency domain position by 10MHz as a lowest frequency domain position of the first frequency domain resource.
For example, as shown in fig. 3, when fm is greater than f1, f1 is the lowest frequency domain position of the second frequency domain resource, fm is the highest frequency domain position of the second frequency domain resource, f1 is the lowest frequency domain position of the first frequency domain resource, and fn is the highest frequency domain position of the first frequency domain resource, in this case, if the first frequency domain position is f1, the lowest frequency domain position of the first frequency domain resource may be the same as the lowest frequency domain position of the second frequency domain resource, or the center frequency domain position of the first frequency domain resource may be the same as the lowest frequency domain position of the second frequency domain resource, or the highest frequency domain position of the first frequency domain resource is the same as the lowest frequency domain position of the second frequency domain resource, or any one frequency domain position of the first frequency domain resource is the same as the lowest frequency domain position of the second frequency domain resource, which is not limited in this embodiment of the present application.
In this embodiment of the present application, the second frequency domain resources and the third frequency domain resources are in the range of the first frequency domain resources, that is, the first frequency domain resources include the second frequency domain resources and the third frequency domain resources, so as to prevent the terminal device from performing Radio Frequency (RF) switching, and limit the bandwidth of the first frequency domain resources to be not greater than the minimum terminal device bandwidth capability in the carrier frequency range where the first frequency domain resources are located.
It should be noted that the carrier frequency range where the first frequency domain resource is located refers to a frequency range of a carrier accessed by the terminal device when accessing the base station, and due to different frequency ranges of carriers accessed by the terminal device when accessing the base station, the corresponding minimum terminal device bandwidth capabilities may also be different, for example, when the frequency range of the carrier accessed by the terminal device is less than (sub)6GHz, the minimum terminal device bandwidth capability is 10MHz, and when the frequency range of the carrier accessed by the terminal device is greater than (above)6GHz, the minimum terminal device bandwidth capability is 50 MHz. The bandwidth capabilities of the smallest terminal devices corresponding to different carrier frequency ranges may also be the same. The examples of the present application are not limited to these examples.
The maximum downlink carrier bandwidth is the number of PRBs that are included in the downlink carrier at most, or the number of PRBs that can be transmitted by the base station at the same time. The minimum terminal device bandwidth capability is the minimum value of the maximum bandwidth capabilities of all the terminal devices, and the maximum terminal device bandwidth capability is the maximum bandwidth that can be supported by the terminal, that is, the number of the maximum PRB blocks that can be simultaneously transmitted by the terminal.
In addition, it should be noted that the RF switching means that when the individual bandwidth sizes of the second frequency domain resource and the third frequency domain resource are not greater than the minimum bandwidth supported by the terminal device in the carrier frequency range where the first frequency domain resource is located, but the bandwidth size when the second frequency domain resource and the third frequency domain resource are taken as a whole is greater than the minimum bandwidth supported by the terminal device in the carrier frequency range where the first frequency domain resource is located, the terminal device needs to perform RF switching after receiving the control information on the second frequency domain resource, and then receives the system information on the third frequency domain resource.
It should be noted that the maximum terminal device switching time refers to the maximum switching time required when the radio frequency center of the terminal device is different before and after switching.
For example, assuming that the second frequency domain resources are frequency domain resources from f1 to f2, and the bandwidth size is 5MHz, the third frequency domain resources are frequency domain resources from f3 to f4, and the bandwidth size is 10MHz, if f3< f1< f2< f4 as shown in fig. 4, the bandwidth size of the frequency domain resources of the second frequency domain resources and the third frequency domain resources as a whole is (f4-f3) ═ 10 MHz; if f4< f3 is f1< f2 as shown in fig. 5, the bandwidth size of the frequency domain resource of the second frequency domain resource and the third frequency domain resource as a whole is (f4-f2) is 15MHz, and similarly, in this embodiment of the present application, the manner of calculating the bandwidth size of the frequency domain resource of the second frequency domain resource and the third frequency domain resource as a whole is similar, and details thereof are not repeated here.
In specific implementation, the bandwidth of the first frequency domain resource may be predefined as the minimum terminal device bandwidth capability in the carrier frequency range where the first frequency domain resource is located, the bandwidth of the first frequency domain resource may also be predefined as the bandwidth of the second frequency domain resource, or the bandwidth of the first frequency domain resource may be predefined as the maximum carrier bandwidth in the carrier frequency range where the first frequency domain resource is located, and the base station may further indicate the bandwidth of the first frequency domain resource to the terminal device.
Specifically, when the base station indicates the bandwidth size of the first frequency domain resource to the terminal device, optionally, the base station sends second indication information to the terminal device, where the second indication information is used to indicate the bandwidth size of the first frequency domain resource, the bandwidth size of the first frequency domain resource is one of predefined M bandwidth sizes, the bandwidth size of the first frequency domain resource is not greater than the minimum terminal device bandwidth capacity in the carrier frequency range where the first frequency domain resource is located, and M is a positive integer greater than or equal to 1.
In this embodiment, the base station may send the second indication information through PBCH, or may send the second indication information through control information, which is not limited in this embodiment.
It should also be noted that, in the embodiment of the present application, the bandwidth size of the second frequency domain resource is notified to the terminal device by the base station through a physical broadcast channel.
When the second indication information is sent through the PBCH, because the second indication information is sent to the terminal device in a broadcast manner, it may be related that a plurality of terminal devices can receive the second indication information, and in order to enable all terminal devices to not perform RF handover after receiving the second indication information, optionally, the bandwidth size of the first frequency domain resource indicated by the second indication information is not greater than the minimum terminal device bandwidth capacity within the carrier frequency range where the first frequency domain resource is located.
If the bandwidth size of the first frequency domain resource is greater than the bandwidth capability of the minimum terminal device, for example, the bandwidth size of the first frequency domain resource is determined according to the maximum number of physical resource blocks in the frequency range where the carrier is located, and the bandwidth size may be 2 times or the same as the maximum number of physical resource blocks, the terminal device needs to perform RF handover after receiving the control information, and then receive the system information, where the RF handover is performed in a predefined or indicated time interval.
In order to ensure that the terminal device switches from the second frequency domain resource to the third frequency domain resource within the interval time, optionally, the interval time is greater than or equal to the maximum radio frequency switching time of the terminal device.
In a specific implementation, the interval time may be expressed as the number of symbols, for example, 8 symbols, or may be expressed as an absolute time, for example, 200 microseconds (μ s).
When the time interval is indicated by the time indication information, the time interval indicated by the optional time indication information may be one of predefined Q times, where Q is a positive integer greater than or equal to 1, for example, 4 times 200 μ s, 250 μ s, 300 μ s, and 400 μ s are predefined in terms of absolute time, and the time interval indicated by the 2-bit time indication information may be one of 200 μ s, 250 μ s, 300 μ s, and 400 μ s, such as 200 μ s.
It should be noted that, in the embodiment of the present application, the carrier frequency range in which the first frequency domain resource is located, the carrier frequency range in which the second frequency domain resource is located, the carrier frequency range in which the third frequency domain resource is located, and the carrier frequency range in which the fourth frequency domain resource is located are the same, and are all the frequency ranges in which the carriers accessed by the terminal device are located.
In addition, in this embodiment of the present application, the terminal device and the base station respectively determine the size of the resource block allocation information in the control information according to the bandwidth size of the first frequency domain resource, where a relationship between the bandwidth size of the first frequency domain resource and the size of the resource block allocation information in the control information may be predefined, and for example, when the bandwidth size of the first frequency domain resource includes 20 physical resource blocks, the size of the resource block allocation information in the control information is log 2 20＝5bit。
It should be noted that, in this embodiment of the present application, the first frequency domain resource may also be determined in the following manner, specifically, as shown in fig. 6, in this embodiment of the present application, the first frequency domain resource may also be determined by predefining a reference frequency domain position f0, taking the reference frequency domain position f0 as a central frequency domain position of the first frequency domain resource, and then respectively extending the number of physical resource blocks, where the frequency range of the carrier is the largest, to both sides with f0 as a reference, so that the first frequency domain resource can cover the frequency range where the carrier is located no matter whether the predefined reference frequency domain position f0 is the central position of the frequency range where the carrier is located, optionally, the reference frequency domain position f0 may also be predefined as the central frequency domain position of the frequency range where the carrier is located, and then respectively extending the number, which is half of the number of physical resource blocks, where the frequency range of the carrier is the largest, to both sides with f0 as a reference, a first frequency domain resource is determined.
As shown in fig. 7, another method for sending and receiving system information provided in the embodiment of the present application includes:
step 700, a base station sends control information to a terminal device, wherein the control information is used for indicating an offset value, and the offset value is an offset value between a first frequency domain resource and a second frequency domain resource; the first frequency domain resource is transmission resource of system information in frequency domain, and the second frequency domain resource is transmission resource of control information in frequency domain.
Step 701, the base station sends system information to the terminal device on the first frequency domain resource, and after receiving the control information, the terminal device receives the system information sent by the base station on the first frequency domain resource according to the control information.
In addition, in this embodiment of the present application, the offset value may also be an offset value between the first frequency domain resource and a third frequency domain resource, where the third frequency domain resource is a transmission resource of a synchronization signal in a frequency domain, and the synchronization signal is blind-detected by the terminal device in the process of initially accessing the base station. It should be noted that, in the NR system, the transmission resource of the synchronization signal in the frequency domain may be included in the frequency domain resource of the synchronization signal block.
In this embodiment of the present application, since the frequency domain position of the second frequency domain resource or the third frequency domain resource is determined, the first frequency domain resource may be determined by the offset value and the bandwidth size of the first frequency domain resource.
It should be noted that, in the embodiment of the present application, the offset value may be an offset value between a lowest frequency domain position of the first frequency domain resource and a lowest frequency domain position of the second frequency domain resource; alternatively, the offset value may be an offset value between a center frequency-domain position of the first frequency-domain resource and a center frequency-domain position of the second frequency-domain resource; alternatively, the offset value may be an offset value between a highest frequency-domain location of the first frequency-domain resource and a highest frequency-domain location of the second frequency-domain resource; alternatively, the offset value may be an offset value between a lowest frequency domain position of the first frequency domain resource and a lowest frequency domain position of the third frequency domain resource; alternatively, the offset value may be an offset value between a center frequency domain position of the first frequency domain resource and a center frequency domain position of the third frequency domain resource; alternatively, the offset value may be an offset value between a highest frequency-domain position of the first frequency-domain resource and a highest frequency-domain position of the third frequency-domain resource.
For example, as shown in fig. 8, the offset value is an offset value between the center frequency domain position of the first frequency domain resource and the center frequency domain position of the second frequency domain resource.
For example, as shown in fig. 3, when fm is greater than f1, f1 is the lowest frequency-domain position of the second frequency-domain resource, fm is the highest frequency-domain position of the second frequency-domain resource, f1 is the lowest frequency-domain position of the first frequency-domain resource, and fn is the highest frequency-domain position of the first frequency-domain resource; when fm is less than f1, f1 is the highest frequency domain position of the second frequency domain resource, fm is the lowest frequency domain position of the second frequency domain resource, f1 is the highest frequency domain position of the first frequency domain resource, and fn is the lowest frequency domain position of the first frequency domain resource.
In this embodiment of the present application, the offset value may also be an offset value between a starting frequency domain position of an nth physical resource block in the first frequency domain resource and a starting frequency domain position of an mth physical resource block in the second frequency domain resource, where n is a positive integer greater than or equal to 1 and smaller than the total number of physical resource blocks in the first frequency domain resource, m is a positive integer greater than or equal to 1 and smaller than the total number of physical resource blocks in the fourth frequency domain resource, and the like.
It should be noted that, when the embodiment of the present application is specifically implemented, the offset value may be the number of physical resource blocks, for example, 10 physical resource blocks, and a subcarrier interval of a physical resource block is the same as a subcarrier interval of a synchronization signal block. A specific frequency domain position offset, e.g., 5MHz, etc., is also possible. And when the deviation value is the number of the physical resource blocks, the deviation value is not more than the maximum number of the physical resource blocks supported in the carrier frequency range where the first frequency domain resource is located. That is, the offset value is not greater than the number of the largest physical resource blocks included in the carrier bandwidth accessed by the terminal device.
In the NR system, multiple types of subcarrier intervals are supported, and the subcarrier interval of the physical resource block for indicating the offset value may be the same as the subcarrier interval of the third frequency domain resource, may also be the same as the subcarrier interval of the second frequency domain resource, may also be the same as the maximum subcarrier interval supported in the carrier frequency range where the first frequency domain resource is located, or may also be the same as the minimum subcarrier interval supported in the carrier frequency range where the first frequency domain resource is located, which is not limited in this embodiment of the present application.
It should be noted that, in the embodiment of the present application, the carrier frequency range in which the first frequency domain resource is located, the carrier frequency range in which the second frequency domain resource is located, and the carrier frequency range in which the third frequency domain resource is located are the same and are the frequency ranges in which the carriers accessed by the terminal device are located.
In this embodiment, when the bandwidth size of the first frequency domain resource and the second frequency domain resource as a whole is larger than the minimum terminal device bandwidth capability in the carrier frequency range where the first frequency domain resource is located, RF handover is required. And the RF handover is performed in a predefined or indicated time interval, in which case, optionally, the base station sends second indication information to the terminal device, the second indication information indicating the time interval between the terminal device receiving the control information and receiving the system information, or the time interval between the terminal device receiving the control information and receiving the system information is predefined.
In order to ensure that the terminal device switches from the second frequency domain resource to the first frequency domain resource within the interval time, optionally, the interval time is greater than or equal to the maximum terminal device radio frequency switching time.
In a specific implementation, the interval time may be expressed as the number of symbols, for example, 8 symbols, or may be expressed as an absolute time, for example, 200 microseconds (μ s).
When the time interval is indicated by the time indication information, the time interval indicated by the optional time indication information may be one of predefined Q times, where Q is a positive integer greater than or equal to 1, for example, in absolute time, 4 times 200 μ s, 250 μ s, 300 μ s and 400 μ s are predefined, and the time interval indicated by the time indication information may be one of 200 μ s, 250 μ s, 300 μ s and 400 μ s, such as 200 μ s.
In addition, in this embodiment of the present application, the bandwidth size of the first frequency domain resource may be predefined as the minimum terminal device bandwidth capability within the carrier frequency range where the first frequency domain resource is located, or the bandwidth size of the first frequency domain resource is predefined to be the same as the bandwidth size of the second frequency domain resource, or may be indicated by the base station.
Specifically, when the bandwidth size of the first frequency domain resource is indicated by the base station, optionally, the base station sends first indication information to the terminal device, where the first indication information is used to indicate the bandwidth size of the first frequency domain resource, where the bandwidth size of the first frequency domain resource is one of predefined K bandwidth sizes, where the bandwidth size of the first frequency domain resource is not greater than the minimum terminal device bandwidth capability in a carrier frequency range where the first frequency domain resource is located, or the bandwidth size of the first frequency domain resource is not greater than the bandwidth size of the second frequency domain resource, which is not limited in this application embodiment, and K is a positive integer greater than or equal to 1.
It should be noted that, in this embodiment of the present application, the predefined K bandwidth sizes are not greater than the bandwidth capability of the minimum terminal device within the carrier frequency range where the first frequency domain resource is located or the bandwidth size of the second frequency domain resource.
Based on the same concept, the embodiment of the present application further provides a network device, where the network device is configured to perform the actions or functions of the network device in the foregoing method embodiments.
Based on the same concept, the embodiment of the present application further provides a terminal device, where the terminal device is configured to execute the actions or functions of the terminal device in the foregoing method embodiment.
The embodiment of the invention also provides a communication system, which comprises the network equipment and the terminal equipment in the embodiment.
For the sake of brevity, the contents of the apparatus portion may be found in the method embodiments, and the repeated descriptions are omitted.
Referring to fig. 9, a terminal device 900 provided in the embodiment of the present application includes at least a processor 901 and a transceiver 902.
The terminal device may also include a memory 903, which stores computer-executable instructions;
the processor 901 determines a first frequency domain resource according to a first frequency domain position and a bandwidth size of the first frequency domain resource, and sends a receiving instruction to the transceiver 902, where the first frequency domain resource includes a second frequency domain resource and a third frequency domain resource, the second frequency domain resource is a transmission resource of control information in a frequency domain, the third frequency domain resource is a transmission resource of system information in a frequency domain, the control information is used to schedule the third frequency domain resource, and the first frequency domain position is in a frequency domain resource of a synchronization signal block or the second frequency domain resource; a transceiver 902, configured to receive, according to the receiving instruction sent by the processor 901, the system information sent by the network device on the third frequency domain resource.
The processor 901 may be configured to perform the actions implemented by the terminal device in the foregoing method embodiments, and the transceiver 902 may be configured to perform the actions of the terminal device transmitting or sending to the network device in the foregoing method embodiments. Please refer to the description of the previous embodiment of the method, which is not repeated herein.
The processor 901 and the memory 903 may be integrated into a processing device, and the processor 901 is configured to execute the program codes stored in the memory 903 to implement the functions. In particular, the memory 903 may be integrated into the processor 901.
In one possible design, the transceiver 902 is further configured to receive first indication information sent by the network device on a physical broadcast channel, where the first indication information is used to indicate a first frequency domain location; alternatively, the first frequency domain location is predefined.
In one possible design, the first frequency domain location is a lowest frequency domain location of the first frequency domain resource and a lowest frequency domain location of the second frequency domain resource; or the first frequency domain position is a central frequency domain position of the first frequency domain resource and a central frequency domain position of the second frequency domain resource; or the first frequency domain position is the highest frequency domain position of the first frequency domain resource and the highest frequency domain position of the second frequency domain resource; or, the first frequency domain position is a lowest frequency domain position of the first frequency domain resource and a lowest frequency domain position of the synchronization signal block; or, the first frequency domain position is a central frequency domain position of the first frequency domain resource and a central frequency domain position of the synchronization signal block; or, the first frequency domain position is a highest frequency domain position of the first frequency domain resource and a lowest frequency domain position of the synchronization signal block.
In one possible design, the transceiver 902 is further configured to receive second indication information sent by the network device, where the second indication information is used to indicate a bandwidth size of the first frequency domain resource, the bandwidth size of the first frequency domain resource is one of predefined M bandwidth sizes, and the bandwidth size of the first frequency domain resource is not greater than a minimum terminal device bandwidth capability within a carrier frequency range where the first frequency domain resource is located, and M is a positive integer greater than or equal to 1; alternatively, the first and second electrodes may be,
the bandwidth of the first frequency domain resource is predefined as the minimum terminal equipment bandwidth capacity in the carrier frequency range of the first frequency domain resource; alternatively, the first and second electrodes may be,
the bandwidth size of the first frequency domain resource is predefined as the bandwidth size of the second frequency domain resource, which is informed in the physical broadcast channel; alternatively, the first and second electrodes may be,
the bandwidth size of the first frequency domain resource is predefined as the maximum carrier bandwidth within the carrier frequency range of the first frequency domain resource.
In one possible design, the processor 901 is further configured to determine the size of the resource block allocation information in the control information according to the bandwidth size of the first frequency domain resource.
In a possible design, the transceiver 902 is further configured to receive third indication information sent by the network device, where the third indication information is used to indicate an interval between the terminal device receiving the control information and receiving the system information; alternatively, the first and second electrodes may be,
the interval time between the terminal equipment receiving the control information and receiving the system information is predefined.
In one possible design, the interval time is greater than or equal to the maximum terminal device radio frequency switching time.
The terminal equipment can also comprise a power supply which is used for supplying power to various devices or circuits in the terminal equipment; the terminal device may include an antenna, and is configured to send out the uplink data or the uplink control signaling output by the transceiver 902 through a wireless signal.
In addition, in order to improve the functions of the terminal device, the terminal device may further include one or more of an input unit, a display unit, an audio circuit, a camera, a sensor, and the like, and the audio circuit may further include a speaker, a microphone, and the like.
Referring to fig. 10, a network device 1000 provided in the embodiment of the present application includes at least a processor 1001 and a transceiver 1002.
The network device, in particular implementations, may also include a memory 1003 for storing program instructions; the processor 1001 is configured to send an instruction to the transceiver 1002, and the transceiver 1002 is configured to send control information to the terminal device after receiving the sending instruction, and send system information to the terminal device on a third frequency domain resource, where the control information is used to schedule the third frequency domain resource, the third frequency domain resource is a transmission resource of the system information in a frequency domain, the third frequency domain resource and the second frequency domain resource are within a range of the first frequency domain resource, the second frequency domain resource is a transmission resource of the control information in the frequency domain, the first frequency domain resource is determined according to a first frequency domain position and a bandwidth size of the first frequency domain resource, and the first frequency domain position is in a frequency domain resource of the synchronization signal block or the second frequency domain resource.
The processor 1001 and the memory 1003 may be combined into a single processing device, and the processor 1001 is configured to execute the program codes stored in the memory 1003 to implement the above functions. In particular, the memory 1003 may be integrated with the processor 1001.
In one possible design, transceiver 1002 is further configured to transmit first indication information to the terminal device on a physical broadcast channel, the first indication information indicating a first frequency domain location; alternatively, the first frequency domain location is predefined.
In one possible design, the first frequency domain location is a lowest frequency domain location of the first frequency domain resource and a lowest frequency domain location of the second frequency domain resource; or the first frequency domain position is a central frequency domain position of the first frequency domain resource and a central frequency domain position of the second frequency domain resource; or the first frequency domain position is the highest frequency domain position of the first frequency domain resource and the highest frequency domain position of the second frequency domain resource; or, the first frequency domain position is a lowest frequency domain position of the first frequency domain resource and a lowest frequency domain position of the synchronization signal block; or, the first frequency domain position is a central frequency domain position of the first frequency domain resource and a central frequency domain position of the synchronization signal block; or, the first frequency domain position is a highest frequency domain position of the first frequency domain resource and a lowest frequency domain position of the synchronization signal block.
In one possible design, the transceiver 1002 is further configured to send second indication information to the terminal device, where the second indication information is used to indicate a bandwidth size of the first frequency domain resource, the bandwidth size of the first frequency domain resource is one of predefined M bandwidth sizes, and the bandwidth size of the first frequency domain resource is not greater than a minimum terminal device bandwidth capability within a carrier frequency range where the first frequency domain resource is located, and M is a positive integer greater than or equal to 1; alternatively, the first and second electrodes may be,
the bandwidth of the first frequency domain resource is predefined as the minimum terminal equipment bandwidth capacity in the carrier frequency range of the first frequency domain resource; alternatively, the first and second electrodes may be,
the bandwidth size of the first frequency domain resource is predefined as the bandwidth size of the second frequency domain resource, which is informed in the physical broadcast channel; alternatively, the first and second electrodes may be,
the bandwidth size of the first frequency domain resource is predefined as the maximum carrier bandwidth within the carrier frequency range of the first frequency domain resource.
In one possible design, the processing unit is further configured to determine a size of resource block allocation information in the control information according to a bandwidth size of the first frequency domain resource.
In one possible design, the transceiver 1002 is further configured to transmit time indication information by the terminal device, where the time indication information is used to indicate an interval between the terminal device receiving the control information and receiving the system information; alternatively, the first and second liquid crystal display panels may be,
the interval time between the terminal equipment receiving the control information and receiving the system information is predefined.
In one possible design, the interval time is greater than or equal to the maximum terminal device radio frequency switching time.
As shown in fig. 11, the communication system according to the embodiment of the present application includes a network device 1000 and a terminal device 900.
Referring to fig. 12, a terminal device 1200 provided in the embodiment of the present application includes at least a processor 1201 and a transceiver 1202.
The terminal device may also include a memory 1203 that stores computer-executable instructions;
the processor 1201 is configured to send a receiving indication to the transceiver 1202, and the transceiver 1202 is configured to receive control information sent by the network device after receiving the receiving indication, and receive system information sent by the network device on the first frequency domain resource, where the control information is used to indicate an offset value, where the offset value is an offset value between the first frequency domain resource and the second frequency domain resource, or the offset value is an offset value between the first frequency domain resource and a third frequency domain resource, the first frequency domain resource is a transmission resource of the system information on a frequency domain, the second frequency domain resource is a transmission resource of the control information on the frequency domain, the third frequency domain resource is a transmission resource of a synchronization signal on the frequency domain, and the synchronization signal is blind-detected by the terminal device in an initial access process of the base station.
The processor 1201 described above may be configured to perform the actions described in the foregoing method embodiments, which are implemented by the terminal device, and the transceiver 1202 may be configured to perform the actions described in the foregoing method embodiments, which are transmitted or transmitted by the terminal device to the network device. Please refer to the description of the previous embodiment of the method, which is not repeated herein.
The processor 1201 and the memory 1203 may be integrated into one processing device, and the processor 1201 is configured to execute the program codes stored in the memory 1203 to implement the functions. In particular implementations, the memory 1203 may also be integrated into the processor 1201.
In one possible design, the offset value is an offset value between a lowest frequency domain position of the first frequency domain resource and a lowest frequency domain position of the second frequency domain resource; or the offset value is an offset value between the center frequency domain position of the first frequency domain resource and the center frequency domain position of the second frequency domain resource; or the offset value is an offset value between the highest frequency domain position of the first frequency domain resource and the highest frequency domain position of the second frequency domain resource; or the offset value is an offset value between the lowest frequency domain position of the first frequency domain resource and the lowest frequency domain position of the third frequency domain resource; or the offset value is an offset value between the central frequency domain position of the first frequency domain resource and the central frequency domain position of the third frequency domain resource; or, the offset value is an offset value between the highest frequency domain position of the first frequency domain resource and the highest frequency domain position of the third frequency domain resource.
In one possible design, the transceiver 1202 is further configured to receive first indication information sent by the network device, where the first indication information is used to indicate a bandwidth size of the first frequency domain resource, the bandwidth size of the first frequency domain resource is one of predefined K bandwidth sizes, and the bandwidth size of the first frequency domain resource is not greater than a minimum terminal device bandwidth capability within a carrier frequency range where the first frequency domain resource is located, and K is a positive integer greater than or equal to 1; alternatively, the first and second electrodes may be,
the bandwidth of the first frequency domain resource is predefined as the minimum terminal equipment bandwidth capacity in the carrier frequency range of the first frequency domain resource; alternatively, the bandwidth size of the first frequency domain resource is predefined as the bandwidth size of the second frequency domain resource, which is signaled in the physical broadcast channel.
In one possible design, the offset value is not greater than the maximum number of physical resource blocks supported within the carrier frequency range in which the first frequency domain resource is located.
In one possible design, the transceiver 1202 is further configured to receive second indication information sent by the network device, where the second indication information is used to indicate an interval between the terminal device receiving the control information and receiving the system information; or the interval time between the terminal equipment receiving the control information and receiving the system information is predefined.
In one possible design, the interval time is greater than or equal to the maximum terminal device radio frequency switching time. The technical scheme improves the reliability of communication.
The terminal equipment can also comprise a power supply which is used for supplying power to various devices or circuits in the terminal equipment; the terminal device may include an antenna for transmitting the uplink data or the uplink control signaling output by the transceiver 1202 through a wireless signal.
In addition, in order to improve the functions of the terminal device, the terminal device may further include one or more of an input unit, a display unit, an audio circuit, a camera, a sensor, and the like, and the audio circuit may further include a speaker, a microphone, and the like.
Referring to fig. 13, a network device 1300 provided in the embodiment of the present application includes at least a processor 1301 and a transceiver 1302.
In a specific implementation, the network device may further include a memory 1303 for storing program instructions; the processor 1301 is configured to send an instruction to the transceiver unit, the transceiver unit sends control information to the terminal device after receiving the sending instruction sent by the processing unit, and sends system information to the terminal device, where the control information is used to indicate an offset value, where the offset value is an offset value between a first frequency domain resource and a second frequency domain resource, or the offset value is an offset value between the first frequency domain resource and a third frequency domain resource, the first frequency domain resource is a transmission resource of the system information in a frequency domain, the second frequency domain resource is a transmission resource of the control information in the frequency domain, the third frequency domain resource is a transmission resource of a synchronization signal in the frequency domain, and the synchronization signal is blind-detected by the terminal device in an initial access process to the base station.
The processor 1301 and the memory 1303 may be combined into a processing device, and the processor 1301 is configured to execute the program code stored in the memory 1303 to implement the above functions. In particular, the memory 1303 may be integrated into the processor 1301.
In one possible design, the offset value is an offset value between a lowest frequency domain position of the first frequency domain resource and a lowest frequency domain position of the second frequency domain resource; or the offset value is an offset value between the center frequency domain position of the first frequency domain resource and the center frequency domain position of the second frequency domain resource; or the offset value is an offset value between the highest frequency domain position of the first frequency domain resource and the highest frequency domain position of the second frequency domain resource; or the offset value is an offset value between the lowest frequency domain position of the first frequency domain resource and the lowest frequency domain position of the third frequency domain resource; or the offset value is an offset value between the central frequency domain position of the first frequency domain resource and the central frequency domain position of the third frequency domain resource; or, the offset value is an offset value between the highest frequency domain position of the first frequency domain resource and the highest frequency domain position of the third frequency domain resource.
In one possible design, the transceiver 1302 is further configured to send first indication information to the terminal device, where the first indication information is used to indicate a bandwidth size of the first frequency domain resource, the bandwidth size of the first frequency domain resource is one of predefined K bandwidth sizes, and the bandwidth size of the first frequency domain resource is not greater than a minimum terminal device bandwidth capability within a carrier frequency range where the first frequency domain resource is located, and K is a positive integer greater than or equal to 1; alternatively, the first and second electrodes may be,
the bandwidth of the first frequency domain resource is predefined as the minimum terminal equipment bandwidth capacity in the carrier frequency range of the first frequency domain resource; alternatively, the first and second electrodes may be,
the bandwidth size of the first frequency domain resource is predefined as the bandwidth size of the second frequency domain resource, which is signaled in the physical broadcast channel.
In one possible design, the offset value is not greater than the maximum number of physical resource blocks supported within the carrier frequency range in which the first frequency domain resource is located.
In one possible design, the transceiver 1302 is further configured to send second indication information to the terminal device, where the second indication information is used to indicate an interval between the terminal device receiving the control information and receiving the system information; or the interval time between the terminal equipment receiving the control information and receiving the system information is predefined.
In one possible design, the interval time is greater than or equal to the maximum radio frequency switching time of the terminal device.
As shown in fig. 14, the communication system of the embodiment of the present application includes a terminal apparatus 1200, and a network apparatus 1300.
It should be noted that: processor 901, processor 1001, processor 1201, and processor 1301 may be a Central Processing Unit (CPU), a Network Processor (NP), or a combination of a CPU and an NP. The processor may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a field-programmable gate array (FPGA), a General Array Logic (GAL), or any combination thereof.
Memory 903, memory 1003, memory 1203, and memory 1303 may include volatile memory (volatile memory), such as Random Access Memory (RAM); non-volatile memory (non-volatile memory) such as flash memory (flash memory), hard disk (HDD) or solid-state drive (SSD); the memory may also comprise a combination of memories of the kind described above.
In the embodiment of the present application, the terminal device can perform wireless communication with the network device through the above-mentioned unlicensed transmission. In addition, the terminal may also perform wireless communication through licensed spectrum resource transmission.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (19)

1. A method of data transmission, the method comprising:
the terminal equipment determines a first frequency domain resource according to a first frequency domain position and the bandwidth size of the first frequency domain resource, wherein the first frequency domain resource comprises a second frequency domain resource and a third frequency domain resource, the second frequency domain resource is a transmission resource of control information on a frequency domain, the third frequency domain resource is a transmission resource of system information on the frequency domain, and the control information is used for scheduling the third frequency domain resource; the first frequency domain is located in a frequency domain resource of a synchronization signal block; the first frequency domain is determined by first indication information sent by a network device on a Physical Broadcast Channel (PBCH) or is predefined; the terminal equipment receives system information sent by network equipment on the third frequency domain resource;
the method further comprises the following steps:
the terminal device receives third indication information sent by the network device, wherein the third indication information is used for indicating the interval time between the terminal device receiving the control information and the system information; alternatively, the first and second electrodes may be,
the interval time between the terminal equipment receiving the control information and the system information is predefined;
the carrier frequency range of the first frequency domain resource, the carrier frequency range of the second frequency domain resource and the carrier frequency range of the third frequency domain resource are the same and are the frequency ranges of the carriers accessed by the terminal equipment;
the method further comprises the following steps:
the terminal equipment determines the size of the resource block allocation information in the control information according to the corresponding relation between the bandwidth size of the first frequency domain resource and the size of the resource block allocation information in the control information and the bandwidth size of the first frequency domain resource;
after receiving the control information on the second frequency domain resource, the terminal device performs RF switching under conditions including: when the individual bandwidth sizes of the second frequency domain resource and the third frequency domain resource are not larger than the minimum bandwidth supported by the terminal device in the carrier frequency range where the first frequency domain resource is located, and when the bandwidth size of the second frequency domain resource and the third frequency domain resource as a whole is larger than the minimum bandwidth supported by the terminal device in the carrier frequency range where the first frequency domain resource is located.
2. The method of claim 1, wherein the first frequency-domain location is a lowest frequency-domain location of the first frequency-domain resource and a lowest frequency-domain location of the second frequency-domain resource; or the first frequency domain position is a center frequency domain position of the first frequency domain resource and a center frequency domain position of the second frequency domain resource; or the first frequency domain position is the highest frequency domain position of the first frequency domain resource and the highest frequency domain position of the second frequency domain resource; or, the first frequency domain position is a lowest frequency domain position of the first frequency domain resource and a lowest frequency domain position of a synchronization signal block; or, the first frequency domain position is a center frequency domain position of the first frequency domain resource and a center frequency domain position of the synchronization signal block; or, the first frequency domain position is a highest frequency domain position of the first frequency domain resource and a lowest frequency domain position of the synchronization signal block.
3. The method of claim 1 or 2, wherein the method further comprises:
the terminal device receives second indication information sent by the network device, wherein the second indication information is used for indicating the bandwidth size of the first frequency domain resource, the bandwidth size of the first frequency domain resource is one of predefined M bandwidth sizes, the bandwidth size of the first frequency domain resource is not larger than the minimum terminal device bandwidth capacity in a carrier frequency range where the first frequency domain resource is located, and M is a positive integer larger than or equal to 1; alternatively, the first and second electrodes may be,
the bandwidth of the first frequency domain resource is predefined as the minimum terminal equipment bandwidth capacity in the carrier frequency range of the first frequency domain resource; alternatively, the first and second electrodes may be,
the bandwidth size of the first frequency domain resource is predefined as the bandwidth size of the second frequency domain resource, which is signaled in a physical broadcast channel; alternatively, the first and second electrodes may be,
the bandwidth size of the first frequency domain resource is predefined as the maximum carrier bandwidth in the carrier frequency range of the first frequency domain resource.
4. The method of claim 1, wherein the gap time is greater than or equal to a maximum terminal device radio frequency switch time.
5. A method of data transmission, the method comprising:
the network equipment sends control information to the terminal equipment, wherein the control information is used for scheduling third frequency domain resources, the third frequency domain resources are transmission resources of system information on a frequency domain, the third frequency domain resources and second frequency domain resources are in the range of first frequency domain resources, the second frequency domain resources are transmission resources of the control information on a frequency domain, and the first frequency domain resources are determined according to a first frequency domain position and the bandwidth size of the first frequency domain resources; the first frequency domain is located in a frequency domain resource of a synchronization signal block; the first frequency domain is determined by first indication information sent by a network device on a Physical Broadcast Channel (PBCH) or is predefined;
the network equipment sends system information to the terminal equipment on the third frequency domain resource;
the method further comprises the following steps:
the network equipment sends time indication information to the terminal equipment, wherein the time indication information is used for indicating the interval time between the terminal equipment receiving the control information and receiving the system information; alternatively, the first and second electrodes may be,
the interval time between the terminal equipment receiving the control information and the system information is predefined;
the carrier frequency range of the first frequency domain resource, the carrier frequency range of the second frequency domain resource and the carrier frequency range of the third frequency domain resource are the same and are the frequency ranges of the carriers accessed by the terminal equipment;
the method further comprises the following steps:
the network equipment determines the size of the resource block allocation information in the control information according to the corresponding relation between the bandwidth size of the first frequency domain resource and the size of the resource block allocation information in the control information and the bandwidth size of the first frequency domain resource;
after receiving the control information on the second frequency domain resource, the terminal device performs RF switching under conditions including: when the individual bandwidth sizes of the second frequency domain resource and the third frequency domain resource are not larger than the minimum bandwidth supported by the terminal device in the carrier frequency range where the first frequency domain resource is located, and when the bandwidth size of the second frequency domain resource and the third frequency domain resource as a whole is larger than the minimum bandwidth supported by the terminal device in the carrier frequency range where the first frequency domain resource is located.
6. The method of claim 5, wherein the first frequency-domain location is a lowest frequency-domain location of the first frequency-domain resource and a lowest frequency-domain location of the second frequency-domain resource; or the first frequency domain position is a central frequency domain position of the first frequency domain resource and a central frequency domain position of the second frequency domain resource; or the first frequency domain position is the highest frequency domain position of the first frequency domain resource and the highest frequency domain position of the second frequency domain resource; or, the first frequency domain position is a lowest frequency domain position of the first frequency domain resource and a lowest frequency domain position of a synchronization signal block; or, the first frequency domain position is a center frequency domain position of the first frequency domain resource and a center frequency domain position of the synchronization signal block; or, the first frequency domain position is a highest frequency domain position of the first frequency domain resource and a lowest frequency domain position of the synchronization signal block.
7. The method of claim 5 or 6, further comprising:
the network equipment sends second indication information to the terminal equipment, wherein the second indication information is used for indicating the bandwidth size of the first frequency domain resource, the bandwidth size of the first frequency domain resource is one of predefined M bandwidth sizes, the bandwidth size of the first frequency domain resource is not larger than the minimum terminal equipment bandwidth capacity in a carrier frequency range where the first frequency domain resource is located, and M is a positive integer larger than or equal to 1; alternatively, the first and second electrodes may be,
the bandwidth of the first frequency domain resource is predefined as the minimum terminal equipment bandwidth capacity in the carrier frequency range of the first frequency domain resource; alternatively, the first and second electrodes may be,
the bandwidth size of the first frequency domain resource is predefined as the bandwidth size of the second frequency domain resource, which is signaled in a physical broadcast channel; alternatively, the first and second electrodes may be,
the bandwidth size of the first frequency domain resource is predefined as the maximum carrier bandwidth in the carrier frequency range of the first frequency domain resource.
8. The method of claim 5, wherein the gap time is greater than or equal to a maximum terminal device radio frequency switch time.
9. A terminal device, comprising:
a processor, configured to determine a first frequency domain resource according to a first frequency domain position and a bandwidth size of the first frequency domain resource, and send a receiving instruction to a transceiver, where the first frequency domain resource includes a second frequency domain resource and a third frequency domain resource, the second frequency domain resource is a transmission resource of control information in a frequency domain, the third frequency domain resource is a transmission resource of system information in the frequency domain, and the control information is used to schedule the third frequency domain resource; the first frequency domain is located in a frequency domain resource of a synchronization signal block; the first frequency domain is determined by first indication information sent by a network device on a Physical Broadcast Channel (PBCH) or is predefined;
a transceiver, configured to receive, according to the receiving indication sent by the processor, system information sent by a network device on the third frequency domain resource;
the transceiver is further configured to:
receiving third indication information sent by the network device, where the third indication information is used to indicate an interval between the terminal device receiving the control information and receiving the system information; alternatively, the first and second electrodes may be,
the interval time between the terminal equipment receiving the control information and the system information is predefined;
the carrier frequency range of the first frequency domain resource, the carrier frequency range of the second frequency domain resource and the carrier frequency range of the third frequency domain resource are the same and are the frequency ranges of the carriers accessed by the terminal equipment;
the transceiver is further configured to:
determining the size of resource block allocation information in control information according to the corresponding relation between the size of the bandwidth of a first frequency domain resource and the size of the resource block allocation information in the control information and the size of the bandwidth of the first frequency domain resource;
after receiving the control information on the second frequency domain resource, the terminal device performs RF switching under conditions including: when the individual bandwidth sizes of the second frequency domain resource and the third frequency domain resource are not larger than the minimum bandwidth supported by the terminal device in the carrier frequency range where the first frequency domain resource is located, and when the bandwidth size of the second frequency domain resource and the third frequency domain resource as a whole is larger than the minimum bandwidth supported by the terminal device in the carrier frequency range where the first frequency domain resource is located.
10. The terminal device of claim 9, wherein the first frequency-domain location is a lowest frequency-domain location of the first frequency-domain resource and a lowest frequency-domain location of the second frequency-domain resource; or the first frequency domain position is a central frequency domain position of the first frequency domain resource and a central frequency domain position of the second frequency domain resource; or the first frequency domain position is the highest frequency domain position of the first frequency domain resource and the highest frequency domain position of the second frequency domain resource; or, the first frequency domain position is a lowest frequency domain position of the first frequency domain resource and a lowest frequency domain position of a synchronization signal block; or the first frequency domain position is a central frequency domain position of the first frequency domain resource and a central frequency domain position of the synchronization signal block; or, the first frequency domain position is a highest frequency domain position of the first frequency domain resource and a lowest frequency domain position of the synchronization signal block.
11. The terminal device of claim 9 or 10, wherein the transceiver is further configured to:
receiving second indication information sent by the network device, where the second indication information is used to indicate a bandwidth size of the first frequency domain resource, and the bandwidth size of the first frequency domain resource is one of predefined M bandwidth sizes, where the bandwidth size of the first frequency domain resource is not greater than a minimum terminal device bandwidth capability within a carrier frequency range where the first frequency domain resource is located, and M is a positive integer greater than or equal to 1; alternatively, the first and second electrodes may be,
the bandwidth of the first frequency domain resource is predefined as the minimum terminal equipment bandwidth capacity in the carrier frequency range of the first frequency domain resource; alternatively, the first and second electrodes may be,
the bandwidth size of the first frequency domain resource is predefined as the bandwidth size of the second frequency domain resource, which is signaled in a physical broadcast channel; alternatively, the first and second liquid crystal display panels may be,
the bandwidth size of the first frequency domain resource is predefined as the maximum carrier bandwidth in the carrier frequency range of the first frequency domain resource.
12. The terminal device of claim 9, wherein the gap time is greater than or equal to a maximum terminal device radio frequency switch time.
13. A network device, comprising: a processor and a transceiver;
the processor to send an indication to the transceiver;
the transceiver is configured to send control information to the terminal device after receiving the sending instruction, and send system information to the terminal device on a third frequency domain resource, where the control information is used to schedule the third frequency domain resource, the third frequency domain resource is a transmission resource of the system information in a frequency domain, the third frequency domain resource and a second frequency domain resource are within a range of the first frequency domain resource, the second frequency domain resource is a transmission resource of the control information in a frequency domain, and the first frequency domain resource is determined according to a first frequency domain position and a bandwidth size of the first frequency domain resource; the first frequency domain is located in a frequency domain resource of a synchronization signal block; the first frequency domain is determined by first indication information sent by a network device on a Physical Broadcast Channel (PBCH) or is predefined;
the transceiver is further configured to:
sending time indication information to the terminal equipment, wherein the time indication information is used for indicating the interval time between the terminal equipment receiving the control information and the system information; alternatively, the first and second electrodes may be,
the interval time between the terminal equipment receiving the control information and the system information is predefined;
the carrier frequency range of the first frequency domain resource, the carrier frequency range of the second frequency domain resource and the carrier frequency range of the third frequency domain resource are the same and are the frequency ranges of the carriers accessed by the terminal equipment;
the transceiver is further configured to:
the network equipment determines the size of the resource block allocation information in the control information according to the corresponding relation between the bandwidth size of the first frequency domain resource and the size of the resource block allocation information in the control information and the bandwidth size of the first frequency domain resource;
after receiving the control information on the second frequency domain resource, the terminal device performs RF switching under conditions including: when the individual bandwidth sizes of the second frequency domain resource and the third frequency domain resource are not larger than the minimum bandwidth supported by the terminal device in the carrier frequency range where the first frequency domain resource is located, and when the bandwidth size of the second frequency domain resource and the third frequency domain resource as a whole is larger than the minimum bandwidth supported by the terminal device in the carrier frequency range where the first frequency domain resource is located.
14. The network device of claim 13, wherein the first frequency-domain location is a lowest frequency-domain location of the first frequency-domain resource and a lowest frequency-domain location of the second frequency-domain resource; or the first frequency domain position is a central frequency domain position of the first frequency domain resource and a central frequency domain position of the second frequency domain resource; or the first frequency domain position is the highest frequency domain position of the first frequency domain resource and the highest frequency domain position of the second frequency domain resource; or, the first frequency domain position is a lowest frequency domain position of the first frequency domain resource and a lowest frequency domain position of a synchronization signal block; or, the first frequency domain position is a center frequency domain position of the first frequency domain resource and a center frequency domain position of the synchronization signal block; or, the first frequency domain position is a highest frequency domain position of the first frequency domain resource and a lowest frequency domain position of the synchronization signal block.
15. The network device of claim 13 or 14, wherein the transceiver is further configured to:
sending second indication information to the terminal device, where the second indication information is used to indicate the bandwidth size of the first frequency domain resource, the bandwidth size of the first frequency domain resource is one of predefined M bandwidth sizes, the bandwidth size of the first frequency domain resource is not greater than the minimum terminal device bandwidth capability in a carrier frequency range where the first frequency domain resource is located, and M is a positive integer greater than or equal to 1; alternatively, the first and second electrodes may be,
the bandwidth of the first frequency domain resource is predefined as the minimum terminal equipment bandwidth capacity in the carrier frequency range of the first frequency domain resource; alternatively, the first and second electrodes may be,
the bandwidth size of the first frequency domain resource is predefined as the bandwidth size of the second frequency domain resource, which is signaled in a physical broadcast channel; alternatively, the first and second electrodes may be,
the bandwidth size of the first frequency domain resource is predefined as the maximum carrier bandwidth in the carrier frequency range of the first frequency domain resource.
16. The network device of claim 13, wherein the gap time is greater than or equal to a maximum terminal device radio frequency switch time.
17. A computer-readable storage medium storing computer-readable instructions which, when read and executed by a computer, cause the computer to perform the method of any one of claims 1 to 4.
18. A computer-readable storage medium storing computer-readable instructions which, when read and executed by a computer, cause the computer to perform the method of any one of claims 5 to 8.
19. A communication system, the communication system comprising: a terminal device according to any of claims 9-12 and a network device according to any of claims 13-16.
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