WO2017063479A1 - 一种子带切换的方法、设备及系统 - Google Patents

一种子带切换的方法、设备及系统 Download PDF

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Publication number
WO2017063479A1
WO2017063479A1 PCT/CN2016/099447 CN2016099447W WO2017063479A1 WO 2017063479 A1 WO2017063479 A1 WO 2017063479A1 CN 2016099447 W CN2016099447 W CN 2016099447W WO 2017063479 A1 WO2017063479 A1 WO 2017063479A1
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Prior art keywords
network device
user equipment
band
subband
sub
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PCT/CN2016/099447
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English (en)
French (fr)
Inventor
刘亚林
曾广珠
Original Assignee
华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP20163473.0A priority Critical patent/EP3755052B1/en
Priority to EP22198624.3A priority patent/EP4178262A1/en
Priority to EP16854861.8A priority patent/EP3364683B1/en
Publication of WO2017063479A1 publication Critical patent/WO2017063479A1/zh
Priority to US15/951,522 priority patent/US11082895B2/en
Priority to US17/143,838 priority patent/US20210127308A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0016—Hand-off preparation specially adapted for end-to-end data sessions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0077—Transmission or use of information for re-establishing the radio link of access information of target access point
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method, device, and system for subband switching.
  • F-OFDM Filtered Orthogonal Frequency Division Multiplex
  • a subband in F-OFDM may be a certain bandwidth of a numerology having the same subband, or a set of subcarriers having parameters of the same subband.
  • Each subband may contain multiple subcarriers.
  • the numerology of different subbands may be the same or different.
  • the parameters of the subband include at least one of a subcarrier bandwidth, a Transmission Time Interval (TTI) length, a symbol length, a symbol number, and a Cyclic Prefix (CP) length.
  • TTI Transmission Time Interval
  • CP Cyclic Prefix
  • the parameters of the subbands can be pre-configured or flexibly adapted according to the traffic load. Different types of business types can use different sub-bands.
  • a user equipment (User Equipment, referred to as "UE") performs communication services on a sub-band.
  • UE User Equipment
  • the UE may move significantly due to UE mobility, or the sub-band service used by the UE.
  • only the user equipment is switched between different network devices, and the user equipment is not switched between different sub-bands is defined.
  • the embodiment of the present invention provides a method for sub-band handover, which can enable the UE to switch to different sub-bands to adapt to the current requirements of the UE.
  • the embodiments of the present invention also provide corresponding devices and systems.
  • a first aspect of the present invention provides a method for subband switching, including:
  • the network device determines a target sub-band to which the user equipment is to be switched
  • the network device sends the identifier information of the target subband to the user equipment, where the identifier information of the target subband is used by the user equipment to determine configuration information of the target subband, to switch to the Target subband.
  • the determining, by the network device, the target sub-band to which the user equipment is to be switched includes:
  • the network device determines the target sub-band according to the sub-band measurement result.
  • the acquiring, by the network device, the subband measurement result of the user equipment includes:
  • Determining, by the network device, the target sub-band according to the sub-band measurement result includes:
  • the network device determines the target sub-band based on the signal quality.
  • the acquiring, by the network device, the subband measurement result of the user equipment includes:
  • the network device sends the indication information to the user equipment, where the indication information is used to indicate that the user equipment sends a reference signal on a subband designated by the network device;
  • Determining, by the network device, the target sub-band according to the sub-band measurement result includes:
  • the network device determines the target sub-band based on the signal quality.
  • the acquiring, by the network device, the subband measurement result of the user equipment includes:
  • Determining, by the network device, the target subband according to the subband measurement result including:
  • the network device determines the target sub-band according to a signal quality of a sub-band of the neighboring network device.
  • the method further includes:
  • the determining, by the network device, the target sub-band to which the user equipment is to be switched includes:
  • the network device determines the target sub-band according to the moving speed of the user equipment.
  • the determining, by the network device, the target sub-band to which the user equipment is to be switched includes:
  • the target sub-band is determined according to the service type of the user equipment and/or the traffic load of each sub-band.
  • a second aspect of the present invention provides a method for subband switching, including:
  • the user equipment receives the identifier information of the target subband sent by the network device;
  • the user equipment switches to the target sub-band according to the configuration information of the target sub-band.
  • the method before the user equipment receives the identifier information of the target subband sent by the network device, the method further includes:
  • the user equipment sends the signal quality indicating the measured sub-band to the network device.
  • the method before the user equipment receives the identifier information of the target sub-band sent by the network device, the method further includes:
  • the user equipment sends a reference signal on the subband specified by the network device according to the indication information, where the reference signal is used by the network device to determine a signal quality of the user equipment on the designated subband.
  • the method before the user equipment receives the identifier information of the target subband sent by the network device, the method further includes:
  • the user equipment sends a signal quality of a sub-band of the neighboring network device to the network device.
  • the method further includes:
  • the user equipment randomly accesses the target sub-band of the target network device according to the random access configuration information of the target sub-band.
  • the target sub-band is determined by the network device according to a moving speed of the user equipment.
  • the target sub-band is determined by the network device according to a service type of the user equipment and/or a service load of each sub-band.
  • a third aspect of the present invention provides a network device, including:
  • a processing unit configured to determine a target sub-band to which the user equipment is to be switched
  • a sending unit configured to send the identifier information of the target sub-band determined by the processing unit to the user equipment, where the identifier information of the target sub-band is used by the user equipment to determine configuration information of the target sub-band, To switch to the target sub-band.
  • the processing unit is specifically configured to acquire a subband measurement result of the user equipment, and determine the target subband according to the subband measurement result.
  • the network device also includes a receiving unit,
  • the sending unit is further configured to send, to the user equipment, information that the network device indicates the measured subband;
  • the receiving unit is configured to receive, by the user equipment, the signal quality of the subband that indicates the measurement;
  • the processing unit is specifically configured to determine the target sub-band according to a signal quality received by the receiving unit.
  • the sending unit is further configured to send, to the user equipment, indication information, where the indication information is used to indicate that the user equipment sends a reference signal on a subband designated by the network device;
  • the processing unit is configured to determine a signal quality of the specified sub-band according to a reference signal sent by the user equipment on the specified sub-band, and determine the target sub-band according to the signal quality.
  • the network device further includes a receiving unit
  • the receiving unit is configured to acquire configuration information of a subband of a neighboring network device
  • the sending unit is further configured to send, to the user equipment, configuration information of a subband of the neighboring network device that is received by the receiving unit;
  • the receiving unit is further configured to receive a signal quality of a subband of the neighboring network device that is sent by the user equipment;
  • the processing unit is specifically configured to determine a target sub-band of the target network device according to a signal quality of a sub-band of the neighboring network device received by the receiving unit.
  • the sending unit is further configured to send the random access configuration information of the target sub-band to the user equipment, where the random access configuration information is used by the user equipment to randomly access the target network device.
  • the target sub-band is further configured to send the random access configuration information of the target sub-band to the user equipment, where the random access configuration information is used by the user equipment to randomly access the target network device.
  • the processing unit is specifically configured to acquire a moving speed of the user equipment, and determine the target sub-band according to the moving speed of the user equipment.
  • the processing unit is specifically configured to determine the target sub-band according to a service type of the user equipment and/or a service load of each sub-band.
  • a fourth aspect of the present invention provides a user equipment, including:
  • a receiving unit configured to receive identifier information of a target subband sent by the network device
  • a processing unit configured to determine configuration information of the target subband according to the identifier information of the target subband received by the receiving unit, and switch to the target subband according to the configuration information of the target subband.
  • the user equipment further includes a sending unit
  • the receiving unit is further configured to receive information about the measured subband of the network device sent by the network device;
  • the processing unit is further configured to determine, according to the information about the measured subband received by the receiving unit, the signal quality of the subband indicating the measurement;
  • the sending unit is configured to send, to the network device, a signal quality of the subband that is determined by the processing unit to indicate the measurement.
  • the user equipment further includes a sending unit
  • the receiving unit is further configured to receive indication information sent by the network device
  • the sending unit is further configured to send, according to the indication information received by the receiving unit, a reference signal on a subband designated by the network device, where the reference signal is used by the network device to determine that the user equipment is in the The signal quality on the specified subband.
  • the user equipment further includes a sending unit
  • the receiving unit is further configured to receive configuration information of a subband of a neighboring network device that is sent by the network device;
  • the processing unit is further configured to determine a signal quality of a subband of the neighboring network device according to configuration information of a subband of the neighboring network device received by the receiving unit;
  • the sending unit is configured to send, to the network device, a signal quality of a subband of the neighboring network device determined by the processing unit.
  • the user equipment further includes a random access unit
  • the receiving unit is further configured to receive random access configuration information of a target subband in the target network device that is sent by the network device;
  • the random access unit is configured to randomly access the target sub-band of the target network device according to the random access configuration information of the target sub-band received by the receiving unit.
  • the target sub-band is determined by the network device according to a moving speed of the user equipment.
  • the target sub-band is determined by the network device according to a service type of the user equipment and/or a service load of each sub-band.
  • a fifth aspect of the present invention provides a wireless communication system, including a network device and a user equipment;
  • the network device is the network device described in any one of the foregoing third aspect or the third aspect;
  • the user equipment is the user equipment described in the foregoing fourth aspect or any possible implementation manner of the fourth aspect.
  • the method for sub-band handover provided by the embodiments of the present invention can implement switching between sub-bands, thereby having sub-band handover in the UE.
  • the user equipment can be instructed to switch to the target sub-band, thereby improving the service quality of the UE.
  • FIG. 1 is a schematic diagram of subband division of an F-OFDM system according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of an embodiment of a method for subband switching in an embodiment of the present invention
  • FIG. 3 is a schematic diagram of another embodiment of a method for subband switching in an embodiment of the present invention.
  • Figure 4 is a schematic view of a sub-band in the embodiment of the present invention.
  • FIG. 5 is a schematic diagram of another embodiment of a method for subband switching in an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of another embodiment of a method for subband switching in an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of another embodiment of a method for subband switching in an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of an embodiment of a network device according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of another embodiment of a network device according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of an embodiment of a user equipment according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of another embodiment of a user equipment according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of another embodiment of a user equipment according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic diagram of another embodiment of a network device/user equipment according to an embodiment of the present invention.
  • FIG. 14 is a schematic diagram of another embodiment of a network device according to an embodiment of the present invention.
  • FIG. 15 is a schematic diagram of another embodiment of a user equipment according to an embodiment of the present invention.
  • FIG. 16 is a schematic diagram of an embodiment of a wireless communication system according to an embodiment of the present invention.
  • the embodiment of the invention provides a method for sub-band handover, which can enable the user equipment to switch to different sub-bands to meet the current service state of the user equipment.
  • the embodiments of the present invention also provide corresponding devices and systems. The details are described below separately.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD frequency division duplex
  • TDD LTE time division duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • the communication system applied in the embodiment of the present invention includes a user equipment and a network equipment.
  • the user equipment can communicate with one or more core networks via a radio access network (RAN).
  • RAN radio access network
  • the user equipment can refer to (User Equipment, referred to as “UE”), access user equipment, subscriber unit, and subscriber station. , mobile station, mobile station, remote station, remote user equipment, mobile device, wireless communication device, user agent or user device.
  • the access user equipment can be a cellular phone, a cordless phone, a Session Initiation Protocol ("SSIP”) phone, a Wireless Local Loop (WLL) station, and a personal digital processing (Personal).
  • SSIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • Personal Personal digital processing
  • PDA Digital Assistant
  • a handheld device with wireless communication capabilities a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a user device in a future 5G network, and the like.
  • the network device may be a device for communicating with the user equipment, for example, may be a base station (Base Transceiver Station, abbreviated as "BTS”) in the GSM system or CDMA, or may be a base station (NodeB in the WCDMA system, referred to as "NB") may also be an evolved base station (Evolutional Node B, "eNB” or "eNodeB”) in the LTE system, or the network device may be a relay station, an access point, an in-vehicle device, a wearable device, and A network side device in a future 5G network or a network device in a future evolved PLMN network.
  • BTS Base Transceiver Station
  • NodeB base station
  • eNodeB evolved base station
  • LTE Long Term Evolutional Node B
  • FIG. 1 is a schematic diagram of subband division of an F-OFDM system according to an embodiment of the present invention.
  • the communication radio signal divides the spectrum into a plurality of sub-bands on a certain frequency spectrum, and the parameters of each sub-band are different.
  • the parameters of the subband include at least one of a subcarrier bandwidth, a Transmission Time Interval (TTI) length, a symbol length, a symbol number, and a Cyclic Prefix (CP) length.
  • TTI Transmission Time Interval
  • CP Cyclic Prefix
  • the parameters of the subband can be pre-configured or flexibly adapted according to the traffic load.
  • the subbands configured for each parameter are suitable for some specific service types, such as: traditional voice/video, Internet of Things (IOT), real-time car networking, and multimedia broadcast multicast service (MBMS). They are distributed in specific sub-bands.
  • the sub-band configuration of the IOT service has a narrow subcarrier bandwidth and a large transmission delay, which is of great significance for low-power, high-density distributed IOT devices;
  • the sub-band configuration of the real-time car network service has the largest sub-carrier bandwidth and the smallest transmission delay, that is, the attributes of the sub-bands may be different from each other, and the basic physical layer parameters of the sub-bands whose attributes are different from each other are in the basic physical layer parameters. At least one parameter is not the same.
  • FIG. 1 For the specific division method, reference may be made to FIG. 1 , and details are not described herein again.
  • a plurality of sub-bands of a carrier usually include a common sub-band and a plurality of service sub-bands.
  • the common sub-band is different from the service sub-band and is a sub-band initially accessed by the user equipment, and the parameter configuration is known to the user equipment.
  • the user equipment usually switches to the service sub-band communication by the network device after the random access is completed in the common sub-band.
  • the service bearer of the user equipment is mainly on the service sub-band.
  • the sub-band division in the F-OFDM system in the embodiment of the present invention may be pre-configured, semi-statically configured, or dynamically divided.
  • the attributes of the multiple sub-bands in the embodiment of the present invention may be different from each other, and the attributes are different from each other, and at least one of the basic physical layer parameters of each of the plurality of sub-bands is different.
  • the basic physical layer parameters may include a TTI length, a symbol length, a symbol number, a CP length, and the like.
  • FIG. 2 is a schematic diagram of an embodiment of a method for subband switching in an embodiment of the present invention.
  • an embodiment of a method for subband switching in an embodiment of the present invention includes:
  • the network device determines a target sub-band to which the user equipment is to be switched.
  • the network device sends the identifier information of the target subband to the user equipment.
  • the identification information of the subband may be an identifier of the subband or a type identifier of the subband.
  • the user equipment determines configuration information of the target subband according to the identifier information of the target subband.
  • the configuration information of the subband is used by the user equipment or the network device to locate the subband and use the subband, and the configuration information of the subband may include the location, bandwidth, and physical layer of each subband currently configured by the system.
  • the physical layer basic parameters may include at least one of a TTI length, a symbol length, a symbol number, and a CP length.
  • the user equipment switches to the target subband according to the configuration information of the target subband.
  • the method for sub-band handover provided by the embodiments of the present invention can implement switching between sub-bands, thereby having sub-band handover in the UE.
  • the user equipment can be instructed to switch to the target sub-band, thereby improving the service quality of the UE.
  • FIG. 3 is a schematic diagram of an embodiment of a method for subband switching in an embodiment of the present invention.
  • an embodiment of a method for subband switching in an embodiment of the present invention includes:
  • SIB System Information Block
  • the configuration information of each subband in the F-OFDM system is included in the SIB.
  • the user equipment Before using the service subband, the user equipment acquires the SIB on the common subband to obtain the configuration information of each subband.
  • the TTI and the subcarrier space of the subband can be determined by using the identifier information of the subband.
  • Specific waveform parameters such as Cyclic Prefix (CP).
  • the user equipment establishes a connection with the communication network by using a random access procedure and a Radio Resource Control (RRC) connection process.
  • RRC Radio Resource Control
  • the network device determines a target sub-band to which the user equipment is to be switched.
  • the network device sends the identifier information of the target subband to the user equipment.
  • the identifier information of the target subband may be an identifier of the target subband or a type identifier of the target subband, and the identifier of the target subband or the type identifier of the target subband may be represented by a subBandID, and the identifier information of the target subband is used.
  • the target sub-band is determined by the user equipment to switch to the target sub-band.
  • the identifier information of the target subband may be carried in the RRC connection reconfiguration message and sent to the user equipment, and may be carried in other messages and sent to the user equipment.
  • the message is not limited herein.
  • the user equipment sends a response message that the handover succeeds to the network device.
  • the response message of the successful handover may be an RRC Connection Reconfiguration Complete message.
  • the user equipment and the network equipment use the target subband to receive and transmit data.
  • the user equipment sends a response message of the handover failure to the network device.
  • the response message of the handover failure may be an RRC connection reestablishment message.
  • the RRC reconfiguration process may fail.
  • the user equipment does not support the target subband, or the user sets The RRC reconfiguration complete command sent in the target subband is not received by the network device within the specified time.
  • the user equipment and the network equipment maintain a timer, and the next response is not received within the time specified by the timer, which triggers the re-establishment process of the RRC connection.
  • the method for sub-band handover provided by the embodiments of the present invention can implement switching between sub-bands, thereby having sub-band handover in the UE.
  • the user equipment can be instructed to switch to the target sub-band, thereby improving the service quality of the UE.
  • determining a target sub-band to which the user equipment is to be switched may have multiple solutions, and one of the solutions may be:
  • the network device determines, according to the subband measurement result, a target subband to which the user equipment is to be switched.
  • the specific process of obtaining the subband measurement result of the user equipment may be implemented in two ways:
  • an embodiment of obtaining a subband measurement result of the user equipment includes:
  • S1101 Send, to the user equipment, information that the network device indicates the measured subband.
  • the network device indicates that the measured sub-band information may be sent to the user equipment in the measurement configuration message, or may be sent to the user equipment in the RRC connection re-configuration message, and the message is not excessively limited. .
  • the information indicating that the measured subband is measured by the network device may be information indicating the identity, location, bandwidth, and the like of the measured subband.
  • Both S1101 and S115 are network devices instructing the user equipment to perform certain actions through an RRC reconfiguration command.
  • the RRC reconfiguration command can be used to send a measurement configuration (measurementConfiguration), which can be used to configure the radio resource (radioResourceConfiguration) of the user equipment, and can also be used to indicate that the user equipment switches to other network equipment (mobilityControlInformation), and these actions are often performed simultaneously.
  • measurementConfiguration can be used to configure the radio resource (radioResourceConfiguration) of the user equipment, and can also be used to indicate that the user equipment switches to other network equipment (mobilityControlInformation), and these actions are often performed simultaneously.
  • measurementConfiguration can be used to configure the radio resource (radioResourceConfiguration) of the user equipment, and can also be used to indicate that the user equipment switches to other network equipment (mobilityControlInformation), and these actions are often performed simultaneously.
  • the measurementConfiguration object in the measurement is not empty, the measurementConfiguration object is defined by the MeasurementConfiguration structure, and the MeasurementConfiguration includes the configuration information of the sub-band indicating the user equipment to perform signal measurement by the network device, MeasObjectFOFDM and the sub-band measurement report configuration ReportConfigFOFDM.
  • the definition of these structures is as follows:
  • the MeasObject FOFDM structure contains the identifier of the subband or the type of the subband identifies the subBandID, and the subBandID is one of all possible subband type identifiers.
  • the definition of the subband type identifier is shown in Table 1.
  • Table 1 Definition of the identifier of the subband or the type identifier of the subband
  • the sub-band TTI, sub-carrier space and other parameters can be determined by the subBandID.
  • Table 1 is only an illustrative description and does not represent the actual parameter configuration of the actual system. The actual configuration parameters may be different.
  • the network device indicates that the user equipment measures the corresponding sub-band through the subBandID, and the MeasObjectToAddModifyList may include multiple measurement objects MeasObjectFOFDM, and each measurement object corresponds to a measurement configuration on one sub-band.
  • the ReportConfigToAddModifyList indicates the trigger condition reported by the user equipment measurement report.
  • the ReportConfigToAddModifyList includes multiple ReportConfigFOFDM objects.
  • Each ReportConfigFOFDM includes a subband subBandID and the trigger configuration condition reported by the measurement report of the subband.
  • the conditions reported by the trigger subband measurement report can be various, such as when the strongest subband of the signal changes, when the measurement report is reported, or when the signal strength of the subband reaches the threshold, the measurement report is reported. Report.
  • the user equipment determines that the measurement result of the specified measurement object MeasObjectFOFDM reaches the trigger condition of the measurement report triggering configuration ReportConfigFOFDM, the user equipment reports the measurement report to the network device, where the measurement report includes the measurement result MeasResultListFOFDM on the specified sub-band.
  • the measurement result MeasResultListFOFDM is related to the subBandID.
  • RadioResourceConfigDedicated object When the network device instructs the user equipment to perform subband switching, the RadioResourceConfigDedicated object is not empty.
  • the subBandID is included in the RadioResourceConfigDedicated structure.
  • the definition of the RadioResourceConfigDedicated structure is as follows:
  • the subBandID is also one of the identifiers of all possible subbands or the type identifier of the subband.
  • the network device instructs the user equipment to measure the signal quality of the sub-band of the F-OFDM, and reports the measurement report of the signal quality of each sub-band, so that the network device can determine according to the measurement report reported by the user equipment.
  • the sub-band of the user equipment communication and instructs the user equipment to switch to the corresponding sub-band for communication, so that the user equipment user's communication is as far as possible in the sub-band with the best signal quality.
  • the user equipment determines, according to the information that the network device indicates the measured subband, that the network device indicates the measured subband.
  • S1103 The user equipment determines, according to the reference signal on the measured subband, that the network device indicates the signal quality of the measured subband.
  • the channel condition of the transmission is not known in advance, and the channel condition needs to be known by measuring the reference signal.
  • the network device requires the user equipment to perform four sub-bands (or a part of) of ⁇ SB1, SB2, SB3, SB4 ⁇ when performing measurement indications on the user equipment.
  • the reference signal quality is measured and the signal measurement is reported.
  • the difference between the frame structure of the factor band and the waveform parameters results in various configurations of the reference signals of the sub-bands.
  • the model of the configuration of the reference signal in the sub-band can be measured according to the configuration of the reference signal.
  • User equipment may be limited by the antenna's radio frequency capability and can only support partial sub-bands, such as ⁇ SB2, SB3 ⁇ . Therefore, the user equipment only performs the reference signal quality on the two subbands ⁇ SB2, SB3 ⁇ .
  • the measurement report reported by the user equipment only includes the channel quality results of the two subbands of ⁇ SB2, SB3 ⁇ .
  • the network device when the network device sends a sub-band handover message to the user equipment, it is configured only from the sub-bands included in the measurement result.
  • the measurement report reported by the user equipment includes ⁇ SB2, SB3 ⁇ , so the network device selects the subband of the user equipment communication from the two subbands.
  • the network device also performs configuration scheduling of the sub-band resources by considering the service characteristics of the user equipment and/or the air interface resource occupancy of the network equipment.
  • the types of sub-bands of SB2 and SB3 it is found that the TTI of SB2 is shorter, and it is suitable for users with lower service delay requirements.
  • the service with relatively slow delay can be transmitted in SB2, but when all users compete for resources of SB2.
  • the network device can schedule the services with less delay requirements to the SB3.
  • the bandwidth of the SB3 may be relatively large. According to the transmission requirements of the user equipment service, users with large transmission capacity requirements can be supported to ensure the transmission experience of such users.
  • the user equipment sends, to the network device, the network device, indicating a measured signal quality of a subband, where the signal quality is used by the network device to determine the target subband.
  • FIG. 4 describes the process of performing measurement and reporting by the user equipment.
  • the measurement of the signal quality can be performed by the network device.
  • FIG. 6 For the specific process, refer to FIG. 6 to obtain the sub-band of the user equipment.
  • Another embodiment of the measurement results includes:
  • S1105 The network device sends the indication information to the user equipment, where the indication information is used to indicate that the user equipment sends the reference signal on the subband specified by the network device.
  • the indication information may be carried in the configuration message and sent to the user equipment, or may be carried in other messages and sent to the user equipment.
  • S1106 The user equipment sends a reference signal on the subband specified by the network device according to the indication information.
  • the network device determines, according to the reference signal sent by the user equipment on the specified subband, a signal quality on the designated subband.
  • Another solution for determining the target sub-band to which the user equipment is to be switched may also be:
  • the network device may obtain the moving rate of the user equipment in multiple ways.
  • One type of device may be that the user equipment calculates the moving speed through the assistance of the GPS positioning system, and then reports the moving speed to the network device.
  • the user equipment may calculate its own moving speed according to the path loss of the received network device signal, and then report it to the network device. It is also possible that the network device estimates the user equipment moving speed according to the received change of the user equipment signal.
  • the speed of movement of the user equipment has a decisive effect on the selection of the sub-bands.
  • the communication signal is suitable for transmission in a short sub-band of TTI, which can reduce the influence of channel change on the transmission performance per unit time.
  • the user equipment is stationary or moving at a low speed, by configuring a sub-band with a long TTI, the user equipment can obtain greater transmission capacity and higher transmission efficiency.
  • the network device can decide whether to switch the sub-band to the user equipment according to the moving speed of the user equipment. For example, when the moving speed of the user equipment is greater than a certain threshold, the switching of the sub-band of the user equipment is triggered, and the sub-band is switched to the short TTI. When the user equipment moves faster than the threshold, the user equipment sub-band is triggered to switch the sub-band to the TTI long sub-band.
  • the network device does not limit how to obtain the moving speed of the user equipment.
  • the network device can have multiple levels of the user equipment moving speed and the sub-band decision threshold. For example, when the user equipment moves at a speed of 0-40 Km/h, the sub-band TTI It is 1 ms; at 40-80 km/h, the sub-band TTI is 0.5 ms; at 80-160 km/h, the sub-band TTI is 0.1 ms; if it is greater than 160 km/h, the sub-band TTI is 0.05 ms.
  • the network device can also determine the timing of the user equipment sub-band switching according to other readily available changing conditions. For example, when the network device can detect the change of the transmission rate of a certain type of service of the user equipment, when the transmission rate of the user equipment is less than a certain threshold, for example, when the transmission rate of the user equipment is less than 10 kbps, multiple user equipments are performed in the same sub-band. Communication, when it is greater than this threshold, may specifically open a sub-band for the user equipment, or dispatch the user equipment to a sub-band with a larger bandwidth, and instantaneously carry out communication transmission to improve the instantaneous transmission experience of the user equipment.
  • a certain threshold for example, when the transmission rate of the user equipment is less than 10 kbps
  • Communication when it is greater than this threshold, may specifically open a sub-band for the user equipment, or dispatch the user equipment to a sub-band with a larger bandwidth, and instantaneously carry out communication transmission to improve the instantaneous transmission experience of the user equipment.
  • the user equipment can move when communicating.
  • the communication service of the user equipment is switched from one network device eNB 1 to another.
  • another embodiment of a method for subband switching provided by an embodiment of the present invention includes:
  • the source network device acquires configuration information of a subband of the neighboring network device.
  • the network device sends configuration information of a sub-band of the neighboring network device to the user equipment.
  • the configuration information may be carried in the RRC connection reconfiguration message and sent to the user equipment.
  • the network device of S1101 in FIG. 4 indicates that the measured sub-band information is different, where the configuration information of the sub-bands of the neighboring cells is sent, and the information of the sub-band of the local cell is sent by S1101.
  • the structure definition of the MeasObjectFOFDM object further includes a list of adjacent cells, cellsToAddModifyList and subBandID, to indicate that the signals of the subbands in the neighboring cells are measured, and when the signal measurement instruction of the subband of the neighboring cell reaches When the trigger condition defined by ReportConfigFOFDM is triggered, the report of the measurement result is triggered.
  • the user equipment reports a measurement result of the sub-band signal of the neighboring cell.
  • the user equipment reports a measurement report to the network device, where the measurement report includes the measurement result MeasResultListFOFDM on the designated sub-band of the neighboring cell.
  • the measurement result MeasResultListFOFDM is related to the sub-band subBandID of the cell physicalCellIdentity.
  • the measurement result of the subband is the signal quality of the subband.
  • the network device sends the identifier information of the target subband.
  • the source network device determines, according to the measurement report of the sub-band in the neighboring network device that is reported by the user equipment, whether the condition of the network device handover is reached. If the handover condition is met, the identifier of the target sub-band can be delivered by using the RRC connection reconfiguration message. Information indicating that the user equipment is handed over to the target sub-band of the target network device. As described above, in the RRC connection reconfiguration, the mobilityControlInformation object is used to indicate the handover reconfiguration information of the network device caused by the user equipment movement.
  • the mobilityControlInformation includes not only the target sub-band information of the target network device, but also the configuration information of the random access on the sub-band in the target network device, so that the user equipment firstly locates the target network device according to the random access configuration information.
  • the non-contention random access is completed on the subband, and then the RRC connection is completed on the subband according to the configuration information of the subband.
  • the structure of the mobilityControlInformation object is defined as follows:
  • objectSubBand includes the frequency band of the target subband of the target network device
  • the identifier or subband of the subband Information such as the type identification of the belt.
  • rach-ConfigDedicated includes temporary dedicated random access resources on the target subband of the target network device.
  • the user equipment is switched between the network devices.
  • the user equipment in order to maintain the experience of transmission before and after the handover, the user equipment should switch to the same type of subband, and at least the subband waveform parameters should be Relatively close to the principle. For example, if the TTI of the sub-band before handover is 0.1 ms, the TTI of the sub-band after handover can be 0.1 ms or less, and if the sub-band is switched to 1 ms, the delay of transmission may not meet the requirements of the service, which may result in Business failure.
  • the user equipment performs random access on the target network device.
  • the random access configuration information on the target subband of the target network device has been indicated in the RRC reconfiguration in S215, and the user equipment can complete the random access access directly on the target subband of the target network device. Otherwise, the user equipment does not need to know the sub-band random access information, and needs to complete the random access in the common sub-band first, and then switch to the service sub-band, causing excessive access delay and affecting the transmission experience of the service.
  • S225 to S235 are the same as S120 to S130, and can be understood by referring to S120 to S130.
  • the configuration information of the sub-band of the network device adjacent to the network device may be advertised by S205.
  • the sub-band configuration of the network device changes in many cases. For example, if a sub-band is congested for a long time, the network device may expand the bandwidth of the sub-band to solve the congestion conflict; some cells may periodically change.
  • the configuration of the sub-bands, such as the daytime sub-band configuration is mainly for intelligent user equipment communication services, and at night, the sub-band configuration is mainly for the Internet of Things communication service.
  • the format of the advertised subband configuration information between network devices may be as follows:
  • the SubBandConfigList includes the configuration information of the maxsubBandConfig subbands, and the subband identifiers subBandID, dl-Bandwidth, and ul-Bandwidth included in the configuration information of each subband, so that the neighboring network device can determine the subband of the network device according to the subBandID.
  • Sub-band information such as TTI and sub-carrier spacing, dl-Bandwidth defines the bandwidth of the downlink sub-band, and ul-Bandwidth is only valid for FDD mode.
  • the bandwidth of the uplink sub-band is defined in FDD, and the uplink and downlink in TDD mode.
  • the band configuration is the same and no ul-Bandwidth configuration parameters are required.
  • the method in this embodiment enables the user equipment to directly switch to the sub-bands having the same or similar sub-band attributes as those used in the original communication when switching between the network devices, thereby avoiding the first common-band access and then switching.
  • the present invention provides a basis and a specific method for sub-band switching, so that the network device can instruct the user equipment to perform signal quality measurement on the specified sub-band and report the measurement result, so that the network device can measure the sub-band according to the user equipment. Determining the identification information of the target sub-band when the user equipment switches between sub-bands or between network devices, so that the user equipment can establish a communication connection and communicate on the optimal sub-band, thereby improving the efficiency and experience of service transmission. .
  • the switching of the sub-band means that the user equipment acquires the configuration information of the target sub-band, and can implement communication with the network device by using the target sub-band.
  • the types of the target sub-band and the source sub-band are different, and the network device between the sub-bands of the same type is only required.
  • the scheduling can be performed without sub-band switching.
  • the sub-band of the same type should be switched. At least the sub-band waveform parameters should be similar.
  • an embodiment of a network device 30 includes:
  • the processing unit 301 is configured to determine a target sub-band to which the user equipment is to be switched;
  • the sending unit 302 is configured to send the identifier information of the target subband determined by the processing unit 301 to the user equipment, where the identifier information of the target subband is used by the user equipment to determine the configuration of the target subband Information to switch to the target sub-band.
  • the network device Compared with the switching between the sub-bands in the F-OFDM system, the network device provided by the embodiment of the present invention can implement switching between sub-bands, so that when the UE has sub-band switching requirements, The user equipment can be instructed to switch to the target sub-band, thereby improving the quality of service of the UE.
  • the processing unit 301 is specifically configured to acquire a subband measurement result of the user equipment, and determine the target subband according to the subband measurement result.
  • the network device further includes a receiving unit 303.
  • the sending unit 302 is further configured to send, to the user equipment, information that the network device indicates the measured subband;
  • the receiving unit 303 is configured to receive, by the user equipment, the signal quality of the subband that indicates the measurement;
  • the processing unit 301 is specifically configured to determine the target sub-band according to the signal quality received by the receiving unit 303.
  • the sending unit 302 is further configured to send, to the user equipment, indication information, where the indication information is used to indicate that the user equipment sends a reference signal on a subband designated by the network device;
  • the processing unit 301 is specifically configured to determine a signal quality of the specified subband according to a reference signal sent by the user equipment on the specified subband, and determine the target subband according to the signal quality. .
  • the receiving unit 303 is configured to acquire configuration information of a subband of a neighboring network device.
  • the sending unit 302 is further configured to send, to the user equipment, configuration information of a subband of the neighboring network device that is received by the receiving unit 303;
  • the receiving unit 303 is further configured to receive a signal quality of a subband of the neighboring network device that is sent by the user equipment;
  • the processing unit 301 is specifically configured to determine a target sub-band of the target network device according to a signal quality of a sub-band of the neighboring network device received by the receiving unit 303.
  • the sending unit 302 is further configured to send the random access configuration information of the target sub-band to the user equipment, where the random access configuration information is used by the user equipment to randomly access the target network device.
  • the target sub-band is further configured to send the random access configuration information of the target sub-band to the user equipment, where the random access configuration information is used by the user equipment to randomly access the target network device.
  • the processing unit 301 is specifically configured to acquire a moving speed of the user equipment, and determine the target sub-band according to the moving speed of the user equipment.
  • the processing unit 301 is specifically configured to determine the target sub-band according to a service type of the user equipment and/or a service load of each sub-band.
  • an embodiment of a user equipment 40 includes:
  • the receiving unit 401 is configured to receive identifier information of a target subband sent by the network device.
  • the processing unit 402 is configured to determine, according to the identifier information of the target subband received by the receiving unit 401, configuration information of the target subband, and switch to the target subband according to the configuration information of the target subband. .
  • the user equipment provided by the embodiment of the present invention can be switched between sub-bands, thereby improving the service quality of the UE.
  • the user equipment further includes a sending unit 403.
  • the receiving unit 401 is further configured to receive information about the measured subband of the network device sent by the network device;
  • the processing unit 402 is further configured to determine, according to the information about the measured subband received by the receiving unit 401, the signal quality of the subband indicating the measurement;
  • the sending unit 403 is configured to send, to the network device, the signal quality of the subband that is determined by the processing unit 402 to indicate the measurement.
  • the receiving unit 401 is further configured to receive indication information sent by the network device;
  • the sending unit 403 is further configured to send, according to the indication information received by the receiving unit 401, a reference signal on a subband designated by the network device, where the reference signal is used by the network device to determine the user equipment. The quality of the signal on the specified subband.
  • the receiving unit 401 is further configured to receive configuration information of a subband of a neighboring network device that is sent by the network device;
  • the processing unit 402 is further configured to determine a signal quality of a subband of the neighboring network device according to the configuration information of the subband of the neighboring network device received by the receiving unit 401;
  • the sending unit 403 is configured to send, to the network device, a signal quality of a subband of the neighboring network device determined by the processing unit 402.
  • the user equipment further includes Random access unit 404;
  • the receiving unit 401 is further configured to receive random access configuration information of a target sub-band in the target network device that is sent by the network device;
  • the random access unit 404 is configured to randomly access the target sub-band of the target network device according to the random access configuration information of the target sub-band received by the receiving unit 401.
  • the target sub-band is determined by the network device according to a moving speed of the user equipment.
  • the target sub-band is determined by the network device according to a service type of the user equipment and/or a service load of each sub-band.
  • the receiving unit may be a receiver
  • the sending unit may be a transmitter
  • the processing unit may be a processor
  • the receiving unit and the sending unit may be implemented by an input/output I/O device (such as a network card), and the processing unit It may be implemented by a processor executing a program or instruction in a memory (in other words, by a processor and a special instruction in a memory coupled to the processor); in another implementation, the receiving unit, The sending unit may be implemented by an input/output I/O device (such as a network card), and the processing unit may also be implemented by a dedicated circuit.
  • the receiving unit and the sending unit may be implemented by an input/output I/O device (such as a network card), and the processing unit may also be implemented by a Field-Programmable Gate Array (FPGA).
  • FPGA Field-Programmable Gate Array
  • This embodiment provides a hardware structure of a network device/user device.
  • the hardware structure of a network device/user device may include:
  • Transceiver device software device and hardware device
  • the transceiver device is a hardware circuit for completing packet transmission and reception
  • Hardware devices can also be called “hardware processing modules", or simpler, or simply “hardware”. Hardware devices mainly include dedicated hardware circuits based on FPGAs, ASICs (and other supporting devices, such as memory). The hardware circuits of certain functions are often processed much faster than general-purpose processors, but once the functions are customized, they are difficult to change. Therefore, they are not flexible to implement and are usually used to handle some fixed functions. It should be noted that the hardware device may also include an MCU (microprocessor, such as a single chip microcomputer) or a processor such as a CPU in practical applications, but the main function of these processors is not to complete the processing of big data, but mainly used for processing. Some control is performed. In this application scenario, the system that is paired with these devices is a hardware device.
  • MCU microprocessor, such as a single chip microcomputer
  • Software devices mainly include general-purpose processors (such as CPU) and some supporting devices (such as memory, hard disk and other storage devices), which can be programmed to let the processor have the corresponding processing functions.
  • general-purpose processors such as CPU
  • some supporting devices such as memory, hard disk and other storage devices
  • the processed data can be collected by the hardware device.
  • the transmitting device transmits the data, and the processed data can also be sent to the transceiver device through an interface connected to the transceiver device.
  • the transceiver device is configured to transmit information or receive information.
  • the receiving unit and the sending unit may be implemented by an input/output I/O device (such as a network card), and the processing unit may be a technical solution that can be implemented by a processor executing a program or an instruction in the memory.
  • FIG. 14 is a schematic structural diagram of a network device 50 according to an embodiment of the present invention.
  • the network device 50 includes a processor 510, a memory 550, and an input/output I/O device 530, which may include read only memory and random access memory, and provides operational instructions and data to the processor 510.
  • a portion of the memory 550 may also include non-volatile random access memory (NVRAM).
  • NVRAM non-volatile random access memory
  • the memory 550 stores elements, executable modules or data structures, or a subset thereof, or their extension set:
  • the operation instruction can be stored in the operating system
  • the I/O device 530 And sending, by the I/O device 530, the identifier information of the target subband to the user equipment, where the identifier information of the target subband is used by the user equipment to determine configuration information of the target subband, to switch to the Target subband.
  • the method for sub-band handover provided by the embodiments of the present invention can implement switching between sub-bands, thereby having sub-band handover in the UE.
  • the user equipment can be instructed to switch to the target sub-band, thereby improving the service quality of the UE.
  • the processor 510 controls the operation of the network device 50, which may also be referred to as a CPU (Central Processing Unit).
  • Memory 550 can include read only memory and random access memory and provides instructions and data to processor 510. A portion of the memory 550 may also include non-volatile random access memory (NVRAM).
  • NVRAM non-volatile random access memory
  • the various components of the network device 50 are coupled together by a bus system 520 in a particular application, wherein the bus system 520 can include, in addition to the data bus, Power bus, control bus and status signal bus. However, for clarity of description, various buses are labeled as bus system 520 in the figure.
  • Processor 510 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 510 or an instruction in a form of software.
  • the processor 510 described above may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or discrete hardware. Component.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA off-the-shelf programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 550, and the processor 510 reads the information in the memory 550 and performs the steps of the above method in combination with its hardware.
  • processor 510 is further configured to:
  • the I/O device 530 is configured to send, to the user equipment, information that the network device indicates the measured subband, and receive the signal quality of the subband that is sent by the user equipment to indicate the measurement;
  • the processor 510 is specifically configured to determine the target sub-band according to the signal quality.
  • the I/O device 530 is configured to send, to the user equipment, indication information, where the indication information is used to indicate that the user equipment sends a reference signal on a subband designated by the network device;
  • the processor 510 is specifically configured to determine a signal quality of the specified sub-band according to a reference signal sent by the user equipment on the specified sub-band.
  • the I/O device 530 is configured to acquire configuration information of a sub-band of the neighboring network device, send configuration information of the sub-band of the neighboring network device to the user equipment, and receive the information sent by the user equipment. Describe the signal quality of the sub-bands of adjacent network devices;
  • the processor 510 is specifically configured to determine, according to a signal quality of a subband of the neighboring network device, a target subband of the target network device to which the user equipment is to be switched.
  • the I/O device 530 is configured to send random access configuration information of the target sub-band to the user equipment, where the random access configuration information is used by the user equipment to randomly access the target network.
  • the target sub-band of the device is configured to send random access configuration information of the target sub-band to the user equipment, where the random access configuration information is used by the user equipment to randomly access the target network.
  • the processor 510 is specifically configured to acquire a moving speed of the user equipment, and determine, according to the moving speed of the user equipment, a target sub-band to which the user equipment is to be switched.
  • the processor 510 is specifically configured to determine, according to the service type of the user equipment and/or the service load of each sub-band, a target sub-band to which the user equipment is to be switched.
  • FIG. 15 is a block diagram showing a partial structure of a user equipment 60 provided by an embodiment of the present invention.
  • the user equipment includes components such as a radio frequency circuit 610, a memory 620, an input unit 630, a display unit 640, a sensor 650, an audio circuit 660, a WiFi module 670, a processor 680, and a power source 690.
  • the structure of the user equipment shown in FIG. 15 does not constitute a limitation on the user equipment, and may include more or less components than those illustrated, or combine some components, or different component arrangements.
  • the user equipment in the embodiment of the present invention may be a mobile terminal device.
  • the radio frequency circuit 610 can be configured to receive identification information of a target sub-band sent by the network device.
  • the memory 620 can be used to store software programs and modules, and the processor 680 executes various functional applications and data processing of the user equipment by running software programs and modules stored in the memory 620.
  • the memory 620 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may be stored according to Data created by the use of user equipment (such as audio data, phone book, etc.).
  • memory 620 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
  • the input unit 630 can be configured to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the user device 60.
  • the input unit 630 Touch panel 631 and other input devices 632 can be included.
  • the touch panel 631 also referred to as a touch screen, can collect touch operations on or near the user (such as the user using a finger, a stylus, or the like on the touch panel 631 or near the touch panel 631. Operation), and drive the corresponding connected user equipment according to a preset program.
  • the touch panel 631 can include two parts: a touch detection user device and a touch controller.
  • the touch detection user equipment detects the touch orientation of the user, and detects a signal brought by the touch operation, and transmits a signal to the touch controller; the touch controller receives the touch information from the touch detection user equipment, and converts the touch information into contact coordinates. And then sent to the processor 680, and can receive the command sent by the processor 680 and execute it.
  • the touch panel 631 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves.
  • the input unit 630 may also include other input devices 632.
  • other input devices 632 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, and the like.
  • the display unit 640 can be used to display information input by the user or information provided to the user as well as various menus of the user device.
  • the indicator unit 640 can include an indicator light 641.
  • the indicator light 641 can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.
  • the touch panel 631 can cover the indicator light 641. When the touch panel 631 detects a touch operation on or near the touch panel 631, it transmits to the processor 680 to determine the type of the touch event, and then the processor 680 according to the touch event. The type provides a corresponding visual output on the indicator light 641.
  • the touch panel 631 and the indicator light 641 function as two separate components to implement the input and input functions of the user device, in some embodiments, the touch panel 631 and the indicator light 641 can be integrated. The input and output functions of the user device are implemented.
  • User device 60 may also include at least one type of sensor 650.
  • An audio circuit 660, a speaker 661, and a microphone 662 can provide an audio interface between the user and the user device.
  • the audio circuit 660 can transmit the converted electrical data of the received audio data to the speaker 661 for conversion to the sound signal output by the speaker 661; on the other hand, the microphone 662 converts the collected sound signal into an electrical signal by the audio circuit 660. Convert to audio after receiving According to the audio data output processor 680, it is sent to the, for example, another user equipment via the RF circuit 610, or the audio data is output to the memory 620 for further processing.
  • the processor 680 is a control center for the user equipment, connecting various portions of the entire user equipment using various interfaces and lines, by running or executing software programs and/or modules stored in the memory 620, and recalling data stored in the memory 620.
  • the user equipment is subjected to various functions and processing data to perform overall monitoring of the user equipment.
  • the processor 680 may include one or more processing units; preferably, the processor 680 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, an application, and the like.
  • the modem processor primarily handles wireless communications. It will be appreciated that the above described modem processor may also not be integrated into the processor 680.
  • the processor 680 is configured to determine, according to the identifier information of the target subband, configuration information of the target subband according to the identifier information of the target subband, and switch to the target subband according to the configuration information of the target subband.
  • the user equipment 60 also includes a power source 690 (such as a battery) that supplies power to the various components.
  • a power source 690 such as a battery
  • the power source can be logically coupled to the processor 680 through a power management system to manage functions such as charging, discharging, and power management through the power management system. .
  • the user equipment 60 may further include a camera, a Bluetooth module, and the like, and details are not described herein.
  • the method before the receiving the identifier information of the target subband sent by the network device, the method further includes:
  • the radio frequency circuit 610 is configured to receive information about the measured subband of the network device sent by the network device;
  • the processor 680 is configured to determine, according to the information of the measured subband, the signal quality of the subband indicating the measurement;
  • the radio frequency circuit 610 is configured to send the signal quality of the sub-band indicating the measurement to the network device.
  • the method before the receiving the identifier information of the target subband sent by the network device, the method further includes:
  • the radio frequency circuit 610 is configured to receive the indication information sent by the network device, send, according to the indication information, a reference signal on a subband designated by the network device, where the reference signal is used by the network device to determine that the user equipment is The signal quality on the specified subband.
  • the method before the receiving the identifier information of the target subband sent by the network device, the method further includes:
  • the radio frequency circuit 610 is configured to receive configuration information of a subband of a neighboring network device that is sent by the network device;
  • the processor 680 is configured to determine, according to configuration information of a subband of the neighboring network device, a signal quality of a subband of the neighboring network device.
  • the radio frequency circuit 610 is configured to send, to the network device, a signal quality of a subband of the neighboring network device.
  • the radio frequency circuit 610 is further configured to receive random access configuration information of a target sub-band in the target network device that is sent by the network device;
  • the processor 680 is configured to randomly access the target sub-band of the target network device according to the random access configuration information of the target sub-band.
  • the processor 680 is configured to determine a moving speed of the user equipment
  • the target sub-band is determined by the network device according to a moving speed of the user equipment.
  • the method before the receiving the identifier information of the target subband sent by the network device, the method further includes:
  • the target sub-band is determined by the network device according to a service type of the user equipment and/or a service load of each sub-band.
  • an embodiment of a wireless communication system includes: a network device 30 and a user equipment 40;
  • the network device 30 is configured to determine a target sub-band to which the user equipment is to be handed over, and send the identifier information of the target sub-band to the user equipment, where the identifier information of the target sub-band is used by the user equipment to determine the target sub- The configuration information of the band is switched to the target sub-band.
  • the user equipment 40 is configured to receive the identifier information of the target subband sent by the network device, determine configuration information of the target subband according to the identifier information of the target subband, and switch to the information according to the configuration information of the target subband.
  • Target subband is configured to receive the identifier information of the target subband sent by the network device, determine configuration information of the target subband according to the identifier information of the target subband, and switch to the information according to the configuration information of the target subband.
  • Target subband is configured to receive the identifier information of the target subband sent by the network device, determine configuration information of the target subband according to the identifier information of the target subband, and switch to the information according to the configuration information of the target subband.
  • the method for sub-band handover provided by the embodiments of the present invention can implement switching between sub-bands, thereby having sub-band handover in the UE.
  • the user equipment can be instructed to switch to the target sub-band, thereby improving the service quality of the UE.
  • FIG. 1 to FIG. 7 can be used as an optional implementation manner of the wireless communication system of the present invention, and details are not repeatedly described herein.
  • the program may be stored in a computer readable storage medium, and the storage medium may include: ROM, RAM, disk or CD.

Abstract

本发明公开了一种子带切换的方法，包括：网络设备确定用户设备待切换到的目标子带，所述网络设备向所述用户设备发送所述目标子带的标识信息，用户设备根据所述目标子带的标识信息确定所述目标子带的配置信息，所述用户设备根据所述目标子带的配置信息，切换到所述目标子带。本发明实施例提供的子带切换的方法，可以实现子带之间的切换，从而在UE有子带切换需求时，可以指示用户设备切换到目标子带上，从而提高UE的业务质量。

Description

一种子带切换的方法、设备及系统
本申请要求于2015年10月13日提交中国专利局、申请号为201510670363.0、发明名称为“一种子带切换的方法、设备及系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，具体涉及一种子带切换的方法、设备及系统。
背景技术
滤波的正交频分复用(Filter Orthogonal Frequency Division Multiplex，简称为“F-OFDM”)是一种新的通信技术。F-OFDM技术将频谱分成多个子带。F-OFDM中的子带可以是具有相同子带的参数(numerology)的某个带宽，或者具有相同子带的参数的子载波集合。每个子带可以包含多个子载波。不同子带的参数(numerology)可以相同，也可以不同。子带的参数包括子载波带宽、传输时间间隔(Transmission Time Interval，TTI)长度、符号长度、符号数，以及循环前缀(Cyclic Prefix，CP)长度等参数中的至少一种。子带的参数可以是预先配置的，也可以根据业务负载的情况灵活的适配。不同类型的业务类型可以使用不同的子带。
用户设备(User Equipment，简称为“UE”)在子带上进行通信业务，UE在一个业务子带上通信时，可能会因UE移动导致业务质量发生明显改变，或者UE所使用的子带业务量瞬时变大，导致该子带上的业务拥塞的情况，现有技术中只定义了用户设备在不同网络设备间切换，还没有定义用户设备在不同子带间切换的情况。
发明内容
为了解决现有技术中还未定义UE在不同子带间切换的情况，本发明实施例提供一种子带切换的方法，可以使UE切换到不同的子带上，以适应UE当前的需求。本发明实施例还提供了相应的设备及系统。
本发明第一方面提供一种子带切换的方法，包括：
网络设备确定用户设备待切换到的目标子带；
所述网络设备向所述用户设备发送所述目标子带的标识信息，所述目标子带的标识信息用于所述用户设备确定所述目标子带的配置信息，以切换到所述 目标子带。
结合第一方面，在第一种可能的实现方式中，所述网络设备确定用户设备待切换到的目标子带，包括：
所述网络设备获取所述用户设备的子带测量结果；
所述网络设备根据所述子带测量结果，确定所述目标子带。
结合第一方面第一种可能的实现方式，在第二种可能的实现方式中，所述网络设备获取所述用户设备的子带测量结果，包括：
所述网络设备向所述用户设备发送所述网络设备指示测量的子带的信息；
所述网络设备接收所述用户设备发送的所述指示测量的子带的信号质量；
所述网络设备根据所述子带测量结果确定所述目标子带包括：
所述网络设备根据所述信号质量确定所述目标子带。
结合第一方面第一种可能的实现方式，在第三种可能的实现方式中，所述网络设备获取所述用户设备的子带测量结果，包括：
所述网络设备向所述用户设备发送指示信息，所述指示信息用于指示所述用户设备在所述网络设备指定的子带上发送参考信号；
所述网络设备根据所述用户设备在所述指定的子带上发送的参考信号，确定所述指定的子带的信号质量；
所述网络设备根据所述子带测量结果确定所述目标子带包括：
所述网络设备根据所述信号质量确定所述目标子带。
结合第一方面第一种可能的实现方式，在第四种可能的实现方式中，所述网络设备获取所述用户设备的子带测量结果，包括：
所述网络设备获取相邻网络设备的子带的配置信息；
所述网络设备向所述用户设备发送所述相邻网络设备的子带的配置信息；
所述网络设备接收所述用户设备发送的所述相邻网络设备的子带的信号质量；
所述网络设备根据所述子带测量结果确定所述目标子带，包括：
所述网络设备根据所述相邻网络设备的子带的信号质量，确定所述目标子带。
结合第一方面第四种可能的实现方式，在第五种可能的实现方式中，所述方法还包括：
所述网络设备向所述用户设备发送所述目标子带的随机接入配置信息，所述随机接入配置信息用于所述用户设备随机接入到所述目标网络设备的所述目标子带。
结合第一方面，在第六种可能的实现方式中，所述网络设备确定用户设备待切换到的目标子带，包括：
所述网络设备获取所述用户设备的移动速度；
所述网络设备根据所述用户设备的移动速度，确定所述目标子带。
结合第一方面，在第七种可能的实现方式中，所述网络设备确定用户设备待切换到的目标子带，包括：
根据所述用户设备的业务类型和/或各个子带的业务负荷，确定所述目标子带。
本发明第二方面提供一种子带切换的方法，包括：
用户设备接收网络设备发送的目标子带的标识信息；
所述用户设备根据所述目标子带的标识信息确定所述目标子带的配置信息；
所述用户设备根据所述目标子带的配置信息，切换到所述目标子带。
结合第二方面，在第一种可能的实现方式中，所述用户设备接收网络设备发送的目标子带的标识信息之前，所述方法还包括：
所述用户设备接收所述网络设备发送的所述网络设备指示测量的子带的信息；
所述用户设备根据所述指示测量的子带的信息，确定所述指示测量的子带的信号质量；
所述用户设备向所述网络设备发送所述指示测量的子带的信号质量。
结合第二方面，在第二种可能的实现方式中，所述用户设备接收网络设备发送的目标子带的标识信息之前，所述方法还包括：
所述用户设备接收所述网络设备发送的指示信息；
所述用户设备根据所述指示信息在所述网络设备指定的子带上发送参考信号，所述参考信号用于所述网络设备确定所述用户设备在所述指定的子带上的信号质量。
结合第二方面，在第三种可能的实现方式中，所述用户设备接收网络设备发送的目标子带的标识信息之前，所述方法还包括：
所述用户设备接收所述网络设备发送的相邻网络设备的子带的配置信息；
所述用户设备根据所述相邻网络设备的子带的配置信息确定所述相邻网络设备的子带的信号质量；
所述用户设备向所述网络设备发送所述相邻网络设备的子带的信号质量。
结合第二方面第三种可能的实现方式，在第四种可能的实现方式中，所述方法还包括：
所述用户设备接收所述网络设备发送的目标网络设备中目标子带的随机接入配置信息；
所述用户设备根据所述目标子带的随机接入配置信息随机接入到所述目标网络设备的所述目标子带。
结合第二方面，在第五种可能的实现方式中，
所述目标子带为所述网络设备根据所述用户设备的移动速度确定的。
结合第二方面，在第六种可能的实现方式中，
所述目标子带为所述网络设备根据所述用户设备的业务类型和/或各个子带的业务负荷确定的。
本发明第三方面提供一种网络设备，包括：
处理单元，用于确定用户设备待切换到的目标子带；
发送单元，用于向所述用户设备发送所述处理单元确定的所述目标子带的标识信息，所述目标子带的标识信息用于所述用户设备确定所述目标子带的配置信息，以切换到所述目标子带。
结合第三方面，在第一种可能的实现方式中，
所述处理单元，具体用于获取所述用户设备的子带测量结果，根据所述子带测量结果，确定所述目标子带。
结合第三方面第一种可能的实现方式，在第二种可能的实现方式中，所述 网络设备还包括接收单元，
所述发送单元，还用于向所述用户设备发送所述网络设备指示测量的子带的信息；
所述接收单元，用于接收所述用户设备发送的所述指示测量的子带的信号质量；
所述处理单元，具体用于根据所述接收单元接收的信号质量确定所述目标子带。
结合第三方面第一种可能的实现方式，在第三种可能的实现方式中，
所述发送单元，还用于向所述用户设备发送指示信息，所述指示信息用于指示所述用户设备在所述网络设备指定的子带上发送参考信号；
所述处理单元，用于根据所述用户设备在所述指定的子带上发送的参考信号，确定所述指定的子带的信号质量，并根据所述信号质量确定所述目标子带。
结合第三方面第一种可能的实现方式，在第四种可能的实现方式中，所述网络设备还包括接收单元，
所述接收单元，用于获取相邻网络设备的子带的配置信息；
所述发送单元，还用于向所述用户设备发送所述接收单元接收的所述相邻网络设备的子带的配置信息；
所述接收单元，还用于接收所述用户设备发送的所述相邻网络设备的子带的信号质量；
所述处理单元，具体用于根据所述接收单元接收的所述相邻网络设备的子带的信号质量，确定所述目标网络设备的目标子带。
结合第三方面第四种可能的实现方式，在第五种可能的实现方式中，
所述发送单元，还用于向所述用户设备发送所述目标子带的随机接入配置信息，所述随机接入配置信息用于所述用户设备随机接入到所述目标网络设备的所述目标子带。
结合第三方面，在第六种可能的实现方式中，
所述处理单元，具体用于获取所述用户设备的移动速度，根据所述用户设备的移动速度，确定所述目标子带。
结合第三方面，在第七种可能的实现方式中，
所述处理单元，具体用于根据所述用户设备的业务类型和/或各个子带的业务负荷，确定所述目标子带。
本发明第四方面提供一种用户设备，包括：
接收单元，用于接收网络设备发送的目标子带的标识信息；
处理单元，用于根据所述接收单元接收的所述目标子带的标识信息确定所述目标子带的配置信息，并根据所述目标子带的配置信息，切换到所述目标子带。
结合第四方面，在第一种可能的实现方式中，所述用户设备还包括发送单元，
所述接收单元，还用于接收所述网络设备发送的所述网络设备指示测量的子带的信息；
所述处理单元，还用于根据所述接收单元接收的所述指示测量的子带的信息，确定所述指示测量的子带的信号质量；
所述发送单元，用于向所述网络设备发送所述处理单元确定的所述指示测量的子带的信号质量。
结合第四方面，在第二种可能的实现方式中，所述用户设备还包括发送单元，
所述接收单元，还用于接收所述网络设备发送的指示信息；
所述发送单元，还用于根据所述接收单元接收的所述指示信息在所述网络设备指定的子带上发送参考信号，所述参考信号用于所述网络设备确定所述用户设备在所述指定的子带上的信号质量。
结合第四方面，在第三种可能的实现方式中，所述用户设备还包括发送单元，
所述接收单元，还用于接收所述网络设备发送的相邻网络设备的子带的配置信息；
所述处理单元，还用于根据所述接收单元接收的所述相邻网络设备的子带的配置信息确定所述相邻网络设备的子带的信号质量；
所述发送单元，用于向所述网络设备发送所述处理单元确定的所述相邻网络设备的子带的信号质量。
结合第四方面第三种可能的实现方式，在第四种可能的实现方式中，所述用户设备还包括随机接入单元；
所述接收单元，还用于接收所述网络设备发送的目标网络设备中目标子带的随机接入配置信息；
所述随机接入单元，用于根据所述接收单元接收的所述目标子带的随机接入配置信息随机接入到所述目标网络设备的所述目标子带。
结合第四方面，在第五种可能的实现方式中，
所述目标子带为所述网络设备根据所述用户设备的移动速度确定的。
结合第四方面，在第六种可能的实现方式中，
所述目标子带为所述网络设备根据所述用户设备的业务类型和/或各个子带的业务负荷确定的。
本发明第五方面提供一种无线通信系统，包括网络设备和用户设备；
所述网络设备为上述第三方面或第三方面任一可能的实现方式所述的网络设备；
所述用户设备为上述第四方面或第四方面任一可能的实现方式所述的用户设备。
与现有技术中还未定义F-OFDM系统中子带之间的切换相比，本发明实施例提供的子带切换的方法，可以实现子带之间的切换，从而在UE有子带切换需求时，可以指示用户设备切换到目标子带上，从而提高UE的业务质量。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例中F-OFDM系统的子带划分示意图；
图2是本发明实施例中子带切换的方法的一实施例示意图；
图3是本发明实施例中子带切换的方法的另一实施例示意图；
图4是本发明实施例中子带示意图；
图5是本发明实施例中子带切换的方法的另一实施例示意图；
图6是本发明实施例中子带切换的方法的另一实施例示意图；
图7是本发明实施例中子带切换的方法的另一实施例示意图；
图8是本发明实施例中网络设备的一实施例示意图；
图9是本发明实施例中网络设备的另一实施例示意图；
图10是本发明实施例中用户设备的一实施例示意图；
图11是本发明实施例中用户设备的另一实施例示意图；
图12是本发明实施例中用户设备的另一实施例示意图；
图13是本发明实施例中网络设备/用户设备的另一实施例示意图；
图14是本发明实施例中网络设备的另一实施例示意图；
图15是本发明实施例中用户设备的另一实施例示意图；
图16是本发明实施例中无线通信系统的一实施例示意图。
具体实施方式
本发明实施例提供一种子带切换的方法，可以使用户设备切换到不同的子带上，以满足用户设备当前的业务状态。本发明实施例还提供了相应的设备及系统。以下分别进行详细说明。
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
应理解，本发明实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile Communication，简称为“GSM”)系统、码分多址(Code Division Multiple Access，简称为“CDMA”)系统、宽带码分多址(Wideband Code Division Multiple Access，简称为“WCDMA”)通用分组无线业务(General Packet Radio Service，简称为“GPRS”)系统、长期演进(Long Term Evolution，简称为“LTE”)系统、LTE频分双工(Frequency Division Duplex，简称为“FDD”)系统、LTE时分双工(Time Division Duplex，简称为“TDD”)、通用移动通信系统(Universal Mobile Telecommunication System，简称为“UMTS”)、全球互联微波接入(Worldwide Interoperability for Microwave  Access，简称为“WiMAX”)通信系统，以及未来的5G通信系统等。
本发明实施例应用的通信系统中包括用户设备和网络设备。
用户设备可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网进行通信，用户设备可以指(User Equipment，简称为“UE”)、接入用户设备、用户单元、用户站、移动站、移动台、远方站、远程用户设备、移动设备、无线通信设备、用户代理或用户装置。接入用户设备可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，简称为“SIP”)电话、无线本地环路(Wireless Local Loop，简称为“WLL”)站、个人数字处理(Personal Digital Assistant，简称为“PDA”)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，未来5G网络中的用户设备等。
网络设备可以是用于与用户设备进行通信的设备，例如，可以是GSM系统或CDMA中的基站(Base Transceiver Station，简称为“BTS”)，也可以是WCDMA系统中的基站(NodeB，简称为“NB”)，还可以是LTE系统中的演进型基站(Evolutional Node B，简称为“eNB”或“eNodeB”)，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络中的网络侧设备或未来演进的PLMN网络中的网络设备等。
在本发明实施例中所涉及的F-OFDM方案，可以参阅图1进行理解，图1为本发明实施例中F-OFDM系统的子带划分示意图，如图1所示，网络设备和用户设备通信的无线电信号在一定的频谱上，将频谱分成多个子带，每个子带的参数(numerology)不同。子带的参数包括子载波带宽、传输时间间隔(Transmission Time Interval，TTI)长度、符号长度、符号数，以及循环前缀(Cyclic Prefix，CP)长度等参数中的至少一种。子带的参数可以是预先配置好的，也可以根据业务负载的情况灵活的适配。通常每种参数配置的子带适合于一些特定的业务类型，如：传统语音/视频、物联网(Internet of Things，IOT)、实时车联网、多媒体广播多播业务(Multimedia broadcast multicast service，MBMS)分别分布在特定的子带中。IOT业务的子带配置具有狭窄的子载波带宽和较大的传输时延，这对低功耗的高密度分布的IOT设备具有重要的意义； 而实时车联网业务的子带配置具有最大的子载波带宽和最小的传输时延，也就是说各个子带的属性的可以互不相同，属性互不相同的各个子带的基本物理层参数中至少有一个参数不相同。具体划分方法可以参考图1，此处不再赘述。
一个载波的多个子带中通常包括一个公共子带和多个业务子带，公共子带不同于业务子带，是用户设备初始接入的子带，其参数配置对用户设备是已知的，用户设备通常在公共子带完成随机接入后，被网络设备切换到业务子带上通信。用户设备的业务承载主要在业务子带上。
本发明实施例中F-OFDM系统中的子带的划分可以是预先配置好的，也是半静态配置的，还可以是动态划分的。
本发明实施例中所述多个子带的属性可以互不相同，所述属性互不相同为所述多个子带中各个子带的基本物理层参数中至少有一个参数不相同。基本物理层参数可以包括TTI长度、符号长度、符号数，以及CP长度等。
图2为本发明实施例中子带切换的方法的一实施例示意图。
如图2所示，本发明实施例中子带切换的方法的一实施例包括：
S1、网络设备确定用户设备待切换到的目标子带。
S2、所述网络设备向所述用户设备发送所述目标子带的标识信息。
子带的标识信息可以是子带的标识或者是子带的类型标识。
S3、所述用户设备根据所述目标子带的标识信息确定所述目标子带的配置信息。
子带的配置信息用于所述用户设备或者网络设备定位所述子带并使用所述子带，所述子带的配置信息可以包括系统当前配置的各子带的位置、带宽、物理层基本参数等信息，物理层基本参数可以包括TTI长度、符号长度、符号数，以及CP长度等参数中的至少一种标。子带的配置信息与子带的标识信息预先已建立关联关系，所以，根据子带的标识信息和该关联关系就可以确定目标子带的配置信息。
S4、所述用户设备根据所述目标子带的配置信息，切换到所述目标子带。
与现有技术中还未定义F-OFDM系统中子带之间的切换相比，本发明实施例提供的子带切换的方法，可以实现子带之间的切换，从而在UE有子带切换 需求时，可以指示用户设备切换到目标子带上，从而提高UE的业务质量。
图3为本发明实施例中子带切换的方法的一实施例示意图。
如图3所示，本发明实施例中子带切换的方法的一实施例包括：
S100、网络设备通过周期的系统广播消息发送系统信息块(System Information Block，简称为“SIB”)。
在SIB中包含了F-OFDM系统中各子带的配置信息。
用户设备在使用业务子带前，在公共子带上获取SIB，从而获取各子带的配置信息，在使用子带时，通过子带的标识信息就可以确定子带的TTI、子载波空间、循环前缀(Cyclic Prefix，CP)等具体的波形参数。
S105、用户设备通过随机接入过程和无线资源控制(Radio Resource Control，简称为“RRC”)连接过程与通信网络建立连接。
用户设备通过随机接入信道(Random Access Channel，RACH)进行随机接入的过程，以及RRC连接的过程与现有技术相同，本发明实施例不做过多赘述。
S110、网络设备确定用户设备待切换到的目标子带。
S115、网络设备向所述用户设备发送所述目标子带的标识信息。
所述目标子带的标识信息可以是目标子带的标识或者目标子带的类型标识，目标子带的标识或者目标子带的类型标识都可以用subBandID表示，所述目标子带的标识信息用于所述用户设备确定所述目标子带，以切换到所述目标子带。
所述目标子带的标识信息可以是携带在RRC连接重配消息中发送到用户设备的，当然也可以是携带在其他消息中发送到用户设备的，本处对此消息不做限定。
S120、当子带切换成功时，用户设备向网络设备发送切换成功的响应消息。
该切换成功的响应消息可以是RRC连接重配完成消息。
S125、用户设备和网络设备使用目标子带进行数据的接收和发送。
S130、当子带切换失败时，用户设备向网络设备发送切换失败的响应消息。
该切换失败的响应消息可以是RRC连接重建消息。
RRC重配过程可能会失败，比如，用户设备不支持目标子带，或者用户设 备在目标子带发送的RRC重配完成指令在规定时间内没有被网络设备接收。用户设备和网络设备维持定时器，在定时器规定的时间内没有收到下一条回应，就会触发RRC连接的重建过程。
与现有技术中还未定义F-OFDM系统中子带之间的切换相比，本发明实施例提供的子带切换的方法，可以实现子带之间的切换，从而在UE有子带切换需求时，可以指示用户设备切换到目标子带上，从而提高UE的业务质量。
本发明实施例中，确定用户设备待切换到的目标子带可以有多种方案，其中一种方案可以为：
所述网络设备获取所述用户设备的子带测量结果；
所述网络设备根据所述子带测量结果，确定所述用户设备待切换到的目标子带。
其中，获取所述用户设备的子带测量结果的具体过程可以有两种方案：
一种方案如图4所示，获取所述用户设备的子带测量结果的一实施例包括：
S1101、向用户设备发送网络设备指示测量的子带的信息。
该网络设备指示测量的子带的信息可以是携带在测量配置消息中向用户设备发送的，也可以是携带在RRC连接重配消息向用户设备发送的，对该消息本处不做过多限定。
网络设备指示测量的子带的信息可以是指示测量的子带的标识、位置、带宽等信息。
S1101和S115都是网络设备通过RRC重配指令指示用户设备进行某些动作。RRC重配指令可以用来下发测量配置(measurementConfiguration)，可以用来配置用户设备的无线资源(radioResourceConfiguration)，也可以用来指示用户设备切换到其他网络设备(mobilityControlInformation)，并且这些动作往往同时进行。如：在用户设备切换网络设备时，指示用户设备对目标网络设备的信号进行测量的同时，同时指示用户设备目标网络设备中的无线资源配置。RRCConnectionReconfiguration的定义参考如下：
当网络设备给用户设备下发测量配置时，RRCConnectionReconfiguration 中的measurementConfiguration对象不为空，measurementConfiguration对象由MeasurementConfiguration结构定义，MeasurementConfiguration中包括网络设备指示用户设备进行信号测量的子带的配置信息MeasObjectFOFDM和子带的测量报告配置ReportConfigFOFDM。这些结构的定义具体如下：
MeasObjectFOFDM结构中包含子带的标识或子带的类型标识subBandID，subBandID是所有可能的子带类型标识中的一种。子带类型标识的定义如表1所示。
表1：子带的标识或子带的类型标识的定义
Figure PCTCN2016099447-appb-000001
通过上表可以看出，通过subBandID，就能确定子带的TTI，子载波空间等参数。表1只是示例性的说明，并不代表实际系统真正的参数配置，实际配置的参数可能与此不同。网络设备通过subBandID指示用户设备对相应的子带进行测量，MeasObjectToAddModifyList中可以包含多个测量对象MeasObjectFOFDM，每个测量对象对应一个子带上的测量配置。并通过ReportConfigToAddModifyList指示用户设备测量报告上报的触发条件，ReportConfigToAddModifyList中包含多个ReportConfigFOFDM的对象，每个ReportConfigFOFDM包含一个子带subBandID，以及该子带的测量报告上报的触发配置条件。触发子带测量报告上报的条件可以多种多样，比如信号最强的子带发生变化时，上报测量报告，或子带的信号强度达到阀值时上报测量报 告。
当用户设备对指定测量对象MeasObjectFOFDM的测量结果达到测量报告触发配置ReportConfigFOFDM的触发条件时，用户设备给网络设备上报测量报告，测量报告中包含指定子带上的测量结果MeasResultListFOFDM。其中，测量结果MeasResultListFOFDM是与subBandID相关的。
当网络设备指示用户设备进行子带切换时，RadioResourceConfigDedicated的对象不为空。RadioResourceConfigDedicated结构中包括subBandID。RadioResourceConfigDedicated结构的定义如下所示：
subBandID同样是所有可能的子带的标识或子带的类型标识中的一个。
通过本实施例描述的方法，网络设备指示用户设备对F-OFDM的子带进行信号质量的测量，并上报各子带的信号质量的测量报告，使得网络设备可以根据用户设备上报的测量报告确定用户设备通信的子带，并指示用户设备切换到相应的子带上进行通信，使得用户设备用户的通信尽量在信号质量最好的子带中。
S1102、用户设备根据所述网络设备指示测量的子带的信息，确定所述网络设备指示测量的子带。
S1103、用户设备根据所述网络设备指示测量的子带上的参考信号，确定所述网络设备指示测量的子带的信号质量。
网络设备和用户设备在进行通信传输时，对传输的信道情况预先并不知晓，需要通过对参考信号的测量知道信道状况。
假设网络设备有{SB1,SB2,SB3,SB4}四个子带，网络设备在对用户设备进行测量指示时，要求用户设备对{SB1,SB2,SB3,SB4}四个子带(或者其中一部分)上的参考信号质量进行测量并上报信号测量结果。
如图5所示，因子带间帧结构和波形参数的差异，导致各子带参考信号的配置也多种多样。用户设备在进行子带的测量时，根据子带的类型，得知该子带中参考信号的配置的模型，才能根据参考信号的配置情况对其进行测量。用户设备可能会受天线射频能力的限制，只能支持部分子带，如{SB2,SB3}两个子带。因而，用户设备只对{SB2,SB3}这两个子带上的参考信号质量进行 测量，用户设备上报的测量报告中也只包括{SB2,SB3}两个子带的信道质量结果。
这样，网络设备在向用户设备发送子带切换消息时，只从测量结果包含的子带中进行配置。在上面的例子中，用户设备上报的测量报告包括{SB2,SB3}，所以网络设备从这两个子带中选择用户设备通信的子带。
同时，网络设备也会考虑用户设备的业务特性和/或网络设备空口资源占用情况进行子带资源的配置调度。根据SB2和SB3子带的类型，发现SB2的TTI更短，适合业务时延要求比较低的用户，显然时延要求比较宽松的业务能在SB2中传输，但是当所有用户都去竞争SB2的资源时，因拥塞造成传输的性能将很差。网络设备就可以将时延要求比较宽松的业务调度到SB3中。而SB3的频带带宽可能比较大，根据用户设备业务的传输要求，可以支持对传输容量要求很大的用户，以保证这类用户的传输体验。
S1104、用户设备向所述网络设备发送所述网络设备指示测量的子带的信号质量，所述信号质量用于所述网络设备确定所述目标子带。
图4对应的实施例所描述的是由用户设备进行测量上报的过程，实际上，获还可以由网络设备来实现信号质量的测量，具体过程可以参阅图6，获取所述用户设备的子带测量结果的另一实施例包括：
S1105、网络设备向用户设备发送指示信息，所述指示信息用于指示所述用户设备在所述网络设备指定的子带上发送参考信号。
该指示信息可以是携带在配置消息中发送给用户设备的，也可以是携带在其他消息发送给用户设备。
S1106、用户设备根据所述指示信息在所述网络设备指定的子带上发送参考信号。
S1107、网络设备根据所述用户设备在所述指定的子带上发送的参考信号，确定所述指定的子带上的信号质量。
确定用户设备待切换到的目标子带的另一种方案还可以是：
获取所述用户设备的移动速度；
根据所述用户设备的移动速度，确定所述用户设备待切换到的目标子带。
网络设备可以有多种方法获得用户设备的移动速率，一种可以是，用户设备通过GPS定位系统的辅助，计算出移动速度，然后上报给网络设备。另外还可以是，用户设备根据接收的网络设备信号的路损变化计算出自身的移动速度，然后上报给网络设备。还可以是网络设备根据接收的用户设备信号的变化估计出用户设备移动速度。
用户设备的移动速度对子带的选择具有决定作用。当用户设备移动速度较大时，通信信号适合在TTI短的子带中传输，这样可以降低单位时间内信道变化对传输性能的影响。当用户设备静止或低速移动时，通过配置TTI长的子带，使得用户设备获得更大的传输容量和更高的传输效率。
网络设备可以根据用户设备的移动速度，决定是否要给用户设备切换子带，例如：当用户设备移动速度大于某一阀值时，触发该用户设备子带的切换，将子带切换到TTI短带宽大的子带；当用户设备移动速度小于阀值时，触发该用户设备子带的切换，将子带切换到TTI长的子带。
这里对网络设备如何获得用户设备的移动速度不做限定，网络设备对用户设备移动速度和子带的判决阀值可以有多个档次，如用户设备移动速度在0-40Km/h时，子带TTI为1ms；在40-80km/h时，子带TTI为0.5ms；在80-160km/h是，子带TTI为0.1ms；大于160km/h，子带TTI为0.05ms。
除了根据用户设备移动速度的变化，网络设备还可以根据其他容易获得的变化条件来决定用户设备子带切换的时机。如网络设备可以检测用户设备某一类业务的传输速率的变化，当用户设备的传输速率小于某一阀值，比如用户设备上网的传输速率小于10kbps时，多个用户设备在同一个子带中进行通信，当大于这一阀值时，可以为用户设备专门开辟一个子带，或将用户设备调度到带宽较大的子带中，瞬时独占的进行通信传输，以提高用户设备瞬时的传输体验。
以上所描述的都是同一个网络设备的子带切换，实际上，用户设备在通信时可以移动，当移动范围超出网络设备覆盖范围时，用户设备的通信服务由一个网络设备eNB 1切换到另一个网络设备eNB 2。所以子带切换还可以是不同网络设备之间的子带切换。
参阅图7，本发明实施例提供的子带切换的方法的另一实施例包括：
S200、源网络设备获取相邻网络设备的子带的配置信息。
S205、网络设备向用户设备发送相邻网络设备的子带的配置信息。
该配置信息可以是携带在RRC连接重配消息中向用户设备发送的。
图4中S1101的网络设备指示测量的子带的信息不同的是，这里下发的是对相邻小区的子带的配置信息，而S1101下发的是本小区子带的信息。本发明实施例中，MeasObjectFOFDM对象的结构定义中还包括相邻小区的列表cellsToAddModifyList和subBandID，以表示对相邻小区中的子带的信号进行测量，当相邻小区的子带的信号测量指令达到ReportConfigFOFDM定义的触发条件时，触发测量结果的上报。
S210、用户设备上报对相邻小区子带信号的测量结果。
与前面类似，当用户设备对指定测量对象MeasObjectFOFDM的测量达到测量报告触发配置ReportConfigFOFDM的触发条件时，用户设备给网络设备上报测量报告，测量报告中包含相邻小区指定子带上的测量结果MeasResultListFOFDM。其中，测量结果MeasResultListFOFDM是与小区physicalCellIdentity的子带subBandID相关的。
子带的测量结果为子带的信号质量。
S215、网络设备下发所述目标子带的标识信息。
源网络设备根据用户设备上报的相邻网络设备中子带的测量报告，判断是否达到网络设备切换的条件，如果达到切换条件，就可以通过RRC连接重配消息下发所述目标子带的标识信息，指示用户设备切换到目标网络设备的目标子带上。前面介绍过，在RRC连接重配中，mobilityControlInformation对象用于指示因用户设备移动造成的网络设备的切换重配信息。mobilityControlInformation中不仅包含目标网络设备的目标子带信息，还会包含目标网络设备中，子带上的随机接入的配置信息，以使的用户设备根据随机接入配置信息，首先在目标网络设备的子带上完成非竞争的随机接入，然后根据子带的配置信息，在子带上完成RRC连接。mobilityControlInformation对象的结构体定义如下：
其中objectSubBand包括目标网络设备的目标子带的频带，子带的标识或子 带的类型标识等信息。rach-ConfigDedicated包括在目标网络设备的目标子带上的临时专用的随机接入资源。
本实施例讲述用户设备在网络设备之间切换，用户设备在网络设备之间切换时，为保持切换前后的传输的体验性一致，应切换到相同类型的子带，至少子带的波形参数应该比较相近为原则。如切换前子带的TTI为0.1ms，切换后子带的TTI可以为0.1ms或小于0.1ms，如果切换到1ms的子带上，则传输的时延可能不能满足业务的需求，从而可能导致业务失效。
S220、用户设备在目标网络设备进行随机接入。
在S215中的RRC重配中已经指示了目标网络设备的目标子带上的随机接入配置信息，用户设备可以直接在目标网络设备的目标子带上完成随机送接入。否则用户设备在不知道子带随机接入信息的情况下，需要首先在公共子带完成随机接入，完成再切换到业务子带，造成过大的接入时延，影响业务的传输体验。
S225至S235与S120至S130相同，可以参阅S120至S130进行理解，本处不做过多赘述。
当网络设备的子带配置信息发生变化时，可以通过S205通告小区相邻的网络设备本网络设备的子带的配置信息。网络设备的子带配置在很多情况下会发生变化，如：某一个子带长时间拥塞，网络设备可能会将子带的带宽扩大，以解决拥塞冲突的问题；有些小区可能会周期性的改变子带的配置，比如白天子带配置主要为智能用户设备通信服务，而晚上，子带配置主要为物联网通信服务。
网络设备之间通告子带配置信息的格式可能如下面所示：
SubBandConfigList中包含最多maxSubBandConfig个子带的配置信息，每个子带的配置信息中包含的子带的标识subBandID、dl-Bandwidth、ul-Bandwidth，根据subBandID，使得相邻网络设备能够确定该网络设备子带的TTI、子载波间隔等子带信息，dl-Bandwidth定义了下行子带的带宽，而ul-Bandwidth只针对FDD模式下才有效，在FDD中定义上行子带的带宽大小，而TDD模式下上下行频带配置相同，无需ul-Bandwidth配置参数。
本实施例的方法使得用户设备在网络设备间切换时，能够直接切换到与原先通信采用的子带属性相同或相近的子带中，避免了先通过公共子带接入，再切换。
本发明给出了子带切换的依据和具体方法，使得网络设备能够指示用户设备对指定的子带进行信号质量的测量和上报测量结果，使得网络设备能够根据用户设备上报的子带的测量结果确定用户设备在子带间切换或网络设备间切换时的目标子带的标识信息，使得用户设备能够在最佳的子带上建立业务通信的连接并进行通信，提高了业务传输的效率和体验。
在本发明实施例中，子带的切换是指用户设备获取到目标子带的配置信息，能够实现与网络设备之间使用该目标子带进行通信。
而且，本发明实施例中目标子带与切换前的源子带在同一个网络设备下时，目标子带和源子带的类型是不相同的，针对相同类型的子带之间网络设备只要做出调度即可，不需要进行子带切换，而当目标子带和源子带不在同一个网络设备下时，为保持切换前后的传输的体验性一致，应切换到相同类型的子带，至少子带的波形参数应该比较相近为原则。
参阅图8，本发明实施例提供的网络设备30的一实施例包括：
处理单元301，用于确定用户设备待切换到的目标子带；
发送单元302，用于向所述用户设备发送所述处理单元301确定的所述目标子带的标识信息，所述目标子带的标识信息用于所述用户设备确定所述目标子带的配置信息，以切换到所述目标子带。
与现有技术中还未定义F-OFDM系统中子带之间的切换相比，本发明实施例提供的网络设备，可以实现子带之间的切换，从而在UE有子带切换需求时，可以指示用户设备切换到目标子带上，从而提高UE的业务质量。
可选地，在上述图8对应的实施例的基础上，本发明实施例提供的网络设备30的第一个可选实施例中，
所述处理单元301，具体用于获取所述用户设备的子带测量结果，根据所述子带测量结果，确定所述目标子带。
可选地，在上述图网络设备的第一个可选实施例的基础上，参阅图9，本 发明实施例提供的网络设备30的第二个可选实施例中，所述网络设备还包括接收单元303，
所述发送单元302，还用于向所述用户设备发送所述网络设备指示测量的子带的信息；
所述接收单元303，用于接收所述用户设备发送的所述指示测量的子带的信号质量；
所述处理单元301，具体用于根据所述接收单元303接收的信号质量确定所述目标子带。
可选地，在上述网络设备30的第一个可选实施例的基础上，本发明实施例提供的网络设备30的第三个可选实施例中，
所述发送单元302，还用于向所述用户设备发送指示信息，所述指示信息用于指示所述用户设备在所述网络设备指定的子带上发送参考信号；
所述处理单元301，具体用于根据所述用户设备在所述指定的子带上发送的参考信号，确定所述指定的子带的信号质量，并根据所述信号质量确定所述目标子带。
可选地，在上述网络设备30的第一个可选实施例的基础上，还是参阅图9，本发明实施例提供的网络设备30的第四个可选实施例中，
所述接收单元303，用于获取相邻网络设备的子带的配置信息；
所述发送单元302，还用于向所述用户设备发送所述接收单元303接收的所述相邻网络设备的子带的配置信息；
所述接收单元303，还用于接收所述用户设备发送的所述相邻网络设备的子带的信号质量；
所述处理单元301，具体用于根据所述接收单元303接收的所述相邻网络设备的子带的信号质量，确定所述目标网络设备的目标子带。
可选地，在上述网络设备30的第四个可选实施例的基础上，本发明实施例提供的网络设备30的第五个可选实施例中，
所述发送单元302，还用于向所述用户设备发送所述目标子带的随机接入配置信息，所述随机接入配置信息用于所述用户设备随机接入到所述目标网络设备的所述目标子带。
可选地，在上述图8对应的实施例的基础上，本发明实施例提供的网络设备30的第六个可选实施例中，
所述处理单元301，具体用于获取所述用户设备的移动速度，根据所述用户设备的移动速度，确定所述目标子带。
可选地，在上述图8对应的实施例的基础上，本发明实施例提供的网络设备30的第七个可选实施例中，
所述处理单元301，具体用于根据所述用户设备的业务类型和/或各个子带的业务负荷，确定所述目标子带。
以上网络设备的实施例或任一可选实施例都可以参阅图1至图7部分的描述进行理解，本处不做过多赘述。
参阅图10，本发明实施例提供的用户设备40的一实施例包括：
接收单元401，用于接收网络设备发送的目标子带的标识信息；
处理单元402，用于根据所述接收单元401接收的所述目标子带的标识信息确定所述目标子带的配置信息，并根据所述目标子带的配置信息，切换到所述目标子带。
与现有技术中还未定义F-OFDM系统中子带之间的切换相比，本发明实施例提供的用户设备，可以在子带之间进行切换，从而提高UE的业务质量。
可选地，在上述图10对应的实施例的基础上，参阅图11，本发明实施例提供的用户设备40的第一个可选实施例中，所述用户设备还包括发送单元403，
所述接收单元401，还用于接收所述网络设备发送的所述网络设备指示测量的子带的信息；
所述处理单元402，还用于根据所述接收单元401接收的所述指示测量的子带的信息，确定所述指示测量的子带的信号质量；
所述发送单元403，用于向所述网络设备发送所述处理单元402确定的所述指示测量的子带的信号质量。
可选地，在上述图10对应的实施例的基础上，还是参阅图11，本发明实施例提供的用户设备40的第二个可选实施例中，
所述接收单元401，还用于接收所述网络设备发送的指示信息；
所述发送单元403，还用于根据所述接收单元401接收的所述指示信息在所述网络设备指定的子带上发送参考信号，所述参考信号用于所述网络设备确定所述用户设备在所述指定的子带上的信号质量。
可选地，在上述图10对应的实施例的基础上，还是参阅图11，本发明实施例提供的用户设备40的第三个可选实施例中，
所述接收单元401，还用于接收所述网络设备发送的相邻网络设备的子带的配置信息；
所述处理单元402，还用于根据所述接收单元401接收的所述相邻网络设备的子带的配置信息确定所述相邻网络设备的子带的信号质量；
所述发送单元403，用于向所述网络设备发送所述处理单元402确定的所述相邻网络设备的子带的信号质量。
可选地，在上述用户设备40的第三个可选实施例的基础上，参阅图12，本发明实施例提供的用户设备40的第四个可选实施例中，所述用户设备还包括随机接入单元404；
所述接收单元401，还用于接收所述网络设备发送的目标网络设备中目标子带的随机接入配置信息；
所述随机接入单元404，用于根据所述接收单元401接收的所述目标子带的随机接入配置信息随机接入到所述目标网络设备的所述目标子带。
可选地，在上述图11对应的实施例的基础上，本发明实施例提供的用户设备40的第五个可选实施例中，
所述目标子带为所述网络设备根据所述用户设备的移动速度确定的。
可选地，在上述图11对应的实施例的基础上，本发明实施例提供的用户设备40的第六个可选实施例中，
所述目标子带为所述网络设备根据所述用户设备的业务类型和/或各个子带的业务负荷确定的。
以上用户设备的实施例或任一可选实施例，都可以参阅图1至图7部分的相关描述进行理解，本处不做过多赘述。
以上多个实施例中，接收单元可以是接收器，发送单元可以是发射器，处理单元可以是处理器。
在上述网络设备/用户设备的多个实施例中，应当理解的是，在一种实现方式下，接收单元、发送单元可以是由输入/输出I/O设备(比如网卡)来实现，处理单元可以由处理器执行存储器中的程序或指令来实现的(换言之，即由处理器以及与所述处理器耦合的存储器中的特殊指令相互配合来实现)；在另一种实现方式下接收单元、发送单元可以是由输入/输出I/O设备(比如网卡)来实现，处理单元也可以分别通过专有电路来实现，具体实现方式参见现有技术，这里不再赘述；在再一种实现方式下，接收单元、发送单元可以是由输入/输出I/O设备(比如网卡)来实现，处理单元也可以通过现场可编程门阵列(FPGA，Field－Programmable Gate Array)来实现，具体实现方式参见现有技术，这里不再赘述，本发明包括但不限于前述实现方式，应当理解的是，只要按照本发明的思想实现的方案，都落入本发明实施例所保护的范围。
本实施例提供了一种网络设备/用户设备的硬件结构，参见图13所示，一种网络设备/用户设备的硬件结构可以包括：
收发器件、软件器件以及硬件器件三部分；
收发器件为用于完成包收发的硬件电路；
硬件器件也可称“硬件处理模块”，或者更简单的，也可简称为“硬件”，硬件器件主要包括基于FPGA、ASIC之类专用硬件电路(也会配合其他配套器件，如存储器)来实现某些特定功能的硬件电路，其处理速度相比通用处理器往往要快很多，但功能一经定制，便很难更改，因此，实现起来并不灵活，通常用来处理一些固定的功能。需要说明的是，硬件器件在实际应用中，也可以包括MCU(微处理器，如单片机)、或者CPU等处理器，但这些处理器的主要功能并不是完成大数据的处理，而主要用于进行一些控制，在这种应用场景下，由这些器件搭配的系统为硬件器件。
软件器件(或者也简单“软件”)主要包括通用的处理器(例如CPU)及其一些配套的器件(如内存、硬盘等存储设备)，可以通过编程来让处理器具备相应的处理功能，用软件来实现时，可以根据业务灵活配置，但往往速度相比硬件器件来说要慢。软件处理完后，可以通过硬件器件将处理完的数据通过收 发器件进行发送，也可以通过一个与收发器件相连的接口向收发器件发送处理完的数据。
本实施例中，收发器件用于发送信息或者接收信息。
硬件器件及软件器件的其他功能在前述实施例中已经详细论述，这里不再赘述。
下面结合附图就接收单元、发送单元可以是由输入/输出I/O设备(比如网卡)来实现，处理单元可以是可以由处理器执行存储器中的程序或指令来实现的技术方案来做详细的介绍：
图14是本发明实施例提供的网络设备50的结构示意图。所述网络设备50包括处理器510、存储器550和输入/输出I/O设备530，存储器550可以包括只读存储器和随机存取存储器，并向处理器510提供操作指令和数据。存储器550的一部分还可以包括非易失性随机存取存储器(NVRAM)。
在一些实施方式中，存储器550存储了如下的元素，可执行模块或者数据结构，或者他们的子集，或者他们的扩展集:
在本发明实施例中，通过调用存储器550存储的操作指令(该操作指令可存储在操作系统中)，
确定用户设备待切换到的目标子带；
通过I/O设备530向所述用户设备发送所述目标子带的标识信息，所述目标子带的标识信息用于所述用户设备确定所述目标子带的配置信息，以切换到所述目标子带。
与现有技术中还未定义F-OFDM系统中子带之间的切换相比，本发明实施例提供的子带切换的方法，可以实现子带之间的切换，从而在UE有子带切换需求时，可以指示用户设备切换到目标子带上，从而提高UE的业务质量。
处理器510控制网络设备50的操作，处理器510还可以称为CPU(Central Processing Unit，中央处理单元)。存储器550可以包括只读存储器和随机存取存储器，并向处理器510提供指令和数据。存储器550的一部分还可以包括非易失性随机存取存储器(NVRAM)。具体的应用中网络设备50的各个组件通过总线系统520耦合在一起，其中总线系统520除包括数据总线之外，还可以包括 电源总线、控制总线和状态信号总线等。但是为了清楚说明起见，在图中将各种总线都标为总线系统520。
上述本发明实施例揭示的方法可以应用于处理器510中，或者由处理器510实现。处理器510可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器510中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器510可以是通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现成可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器550，处理器510读取存储器550中的信息，结合其硬件完成上述方法的步骤。
可选地，处理器510还用于：
获取所述用户设备的子带测量结果；
根据所述子带测量结果，确定所述用户设备待切换到的目标子带。
可选地，I/O设备530用于向所述用户设备发送所述网络设备指示测量的子带的信息；接收所述用户设备发送的所述指示测量的子带的信号质量；
处理器510，具体用于根据所述信号质量确定所述目标子带。
可选地，I/O设备530用于向所述用户设备发送指示信息，所述指示信息用于指示所述用户设备在所述网络设备指定的子带上发送参考信号；
处理器510具体用于根据所述用户设备在所述指定的子带上发送的参考信号，确定所述指定的子带的信号质量。
可选地，I/O设备530用于获取相邻网络设备的子带的配置信息；向所述用户设备发送所述相邻网络设备的子带的配置信息；接收所述用户设备发送的所述相邻网络设备的子带的信号质量；
处理器510具体用于根据所述相邻网络设备的子带的信号质量，确定所述用户设备待切换到的目标网络设备的目标子带。
可选地，I/O设备530用于向所述用户设备发送所述目标子带的随机接入配置信息，所述随机接入配置信息用于所述用户设备随机接入到所述目标网络设备的所述目标子带。
可选地，处理器510具体用于获取所述用户设备的移动速度；根据所述用户设备的移动速度，确定所述用户设备待切换到的目标子带。
可选地，处理器510具体用于根据所述用户设备的业务类型和/或各个子带的业务负荷，确定所述用户设备待切换到的目标子带。
图15示出的是与本发明实施例提供的用户设备60的部分结构的框图。参考图15，用户设备包括：射频电路610、存储器620、输入单元630、显示单元640、传感器650、音频电路660、WiFi模块670、处理器680、以及电源690等部件。本领域技术人员可以理解，图15中示出的用户设备的结构并不构成对用户设备的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。本发明实施例中的用户设备可以是手机登终端设备。
下面结合图15对用户设备的各个构成部件进行具体的介绍：
射频电路610可用于接收网络设备发送的目标子带的标识信息；
存储器620可用于存储软件程序以及模块，处理器680通过运行存储在存储器620的软件程序以及模块，从而执行用户设备的各种功能应用以及数据处理。存储器620可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序(比如声音播放功能、图像播放功能等)等；存储数据区可存储根据用户设备的使用所创建的数据(比如音频数据、电话本等)等。此外，存储器620可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。
输入单元630可用于接收输入的数字或字符信息，以及产生与用户设备60的用户设置以及功能控制有关的键信号输入。具体地，输入单元630 可包括触控面板631以及其他输入设备632。触控面板631，也称为触摸屏，可收集用户在其上或附近的触摸操作(比如用户使用手指、触笔等任何适合的物体或附件在触控面板631上或在触控面板631附近的操作)，并根据预先设定的程式驱动相应的连接用户设备。可选的，触控面板631可包括触摸检测用户设备和触摸控制器两个部分。其中，触摸检测用户设备检测用户的触摸方位，并检测触摸操作带来的信号，将信号传送给触摸控制器；触摸控制器从触摸检测用户设备上接收触摸信息，并将它转换成触点坐标，再送给处理器680，并能接收处理器680发来的命令并加以执行。此外，可以采用电阻式、电容式、红外线以及表面声波等多种类型实现触控面板631。除了触控面板631，输入单元630还可以包括其他输入设备632。具体地，其他输入设备632可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆等中的一种或多种。
显示单元640可用于显示由用户输入的信息或提供给用户的信息以及用户设备的各种菜单。显示单元640可包括指示灯641，可选的，可以采用液晶显示器(Liquid Crystal Display，LCD)、有机发光二极管(Organic Light-Emitting Diode,OLED)等形式来配置指示灯641。进一步的，触控面板631可覆盖指示灯641，当触控面板631检测到在其上或附近的触摸操作后，传送给处理器680以确定触摸事件的类型，随后处理器680根据触摸事件的类型在指示灯641上提供相应的视觉输出。虽然在图15中，触控面板631与指示灯641是作为两个独立的部件来实现用户设备的输入和输入功能，但是在某些实施例中，可以将触控面板631与指示灯641集成而实现用户设备的输入和输出功能。
用户设备60还可包括至少一种传感器650。
音频电路660、扬声器661，传声器662可提供用户与用户设备之间的音频接口。音频电路660可将接收到的音频数据转换后的电信号，传输到扬声器661，由扬声器661转换为声音信号输出；另一方面，传声器662将收集的声音信号转换为电信号，由音频电路660接收后转换为音频数 据，再将音频数据输出处理器680处理后，经射频电路610以发送给比如另一用户设备，或者将音频数据输出至存储器620以便进一步处理。
处理器680是用户设备的控制中心，利用各种接口和线路连接整个用户设备的各个部分，通过运行或执行存储在存储器620内的软件程序和/或模块，以及调用存储在存储器620内的数据，执行用户设备的各种功能和处理数据，从而对用户设备进行整体监控。可选的，处理器680可包括一个或多个处理单元；优选的，处理器680可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作系统、用户界面和应用程序等，调制解调处理器主要处理无线通信。可以理解的是，上述调制解调处理器也可以不集成到处理器680中。
处理器680在本发明实施例中用于根据所述目标子带的标识信息确定所述目标子带的配置信息；根据所述目标子带的配置信息，切换到所述目标子带。
用户设备60还包括给各个部件供电的电源690(比如电池)，优选的，电源可以通过电源管理系统与处理器680逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。
尽管未示出，用户设备60还可以包括摄像头、蓝牙模块等，在此不再赘述。
本发明实施例中还可以包括：
可选地，所述接收网络设备发送的目标子带的标识信息之前，所述方法还包括：
射频电路610用于接收所述网络设备发送的所述网络设备指示测量的子带的信息；
处理器680用于根据所述指示测量的子带的信息，确定所述指示测量的子带的信号质量；
射频电路610用于向所述网络设备发送所述指示测量的子带的信号质量。
可选地，所述接收网络设备发送的目标子带的标识信息之前，所述方法还包括：
射频电路610用于接收所述网络设备发送的指示信息；根据所述指示信息在所述网络设备指定的子带上发送参考信号，所述参考信号用于所述网络设备确定所述用户设备在所述指定的子带上的信号质量。
可选地，所述接收网络设备发送的目标子带的标识信息之前，所述方法还包括：
射频电路610用于接收所述网络设备发送的相邻网络设备的子带的配置信息；
处理器680用于根据所述相邻网络设备的子带的配置信息确定所述相邻网络设备的子带的信号质量；
射频电路610用于向所述网络设备发送所述相邻网络设备的子带的信号质量。
可选地，射频电路610还用于接收所述网络设备发送的目标网络设备中目标子带的随机接入配置信息；
处理器680用于根据所述目标子带的随机接入配置信息随机接入到所述目标网络设备的所述目标子带。
可选地，处理器680用于确定所述用户设备的移动速度；
所述目标子带为所述网络设备根据所述用户设备的移动速度确定的。
可选地，所述接收网络设备发送的目标子带的标识信息之前，所述方法还包括：
所述目标子带为所述网络设备根据所述用户设备的业务类型和/或各个子带的业务负荷确定的。
参阅图16，本发明实施例提供的无线通信系统的一实施例包括：网络设备30和用户设备40；
网络设备30用于确定用户设备待切换到的目标子带，向所述用户设备发送所述目标子带的标识信息，所述目标子带的标识信息用于所述用户设备确定所述目标子带的配置信息，以切换到所述目标子带。
用户设备40用于接收网络设备发送的目标子带的标识信息，根据所述目标子带的标识信息确定所述目标子带的配置信息，根据所述目标子带的配置信息，切换到所述目标子带。
与现有技术中还未定义F-OFDM系统中子带之间的切换相比，本发明实施例提供的子带切换的方法，可以实现子带之间的切换，从而在UE有子带切换需求时，可以指示用户设备切换到目标子带上，从而提高UE的业务质量。
可选地，上述图1至图7的多个可选实施例都可以作为本发明无线通信系统的可选实施方式，本处不再重复赘述。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成，该程序可以存储于一计算机可读存储介质中，存储介质可以包括：ROM、RAM、磁盘或光盘等。
以上对本发明实施例所提供的子带切换的方法、设备以及系统进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。

Claims (31)

  1. 一种子带切换的方法，其特征在于，包括：
    网络设备确定用户设备待切换到的目标子带；
    所述网络设备向所述用户设备发送所述目标子带的标识信息，所述目标子带的标识信息用于所述用户设备确定所述目标子带的配置信息，以切换到所述目标子带。
  2. 根据权利要求1所述的方法，其特征在于，所述网络设备确定用户设备待切换到的目标子带，包括：
    所述网络设备获取所述用户设备的子带测量结果；
    所述网络设备根据所述子带测量结果，确定所述目标子带。
  3. 根据权利要求2所述的方法，其特征在于，所述网络设备获取所述用户设备的子带测量结果，包括：
    所述网络设备向所述用户设备发送所述网络设备指示测量的子带的信息；
    所述网络设备接收所述用户设备发送的所述指示测量的子带的信号质量；
    所述网络设备根据所述子带测量结果确定所述目标子带包括：
    所述网络设备根据所述信号质量确定所述目标子带。
  4. 根据权利要求2所述的方法，其特征在于，所述网络设备获取所述用户设备的子带测量结果，包括：
    所述网络设备向所述用户设备发送指示信息，所述指示信息用于指示所述用户设备在所述网络设备指定的子带上发送参考信号；
    所述网络设备根据所述用户设备在所述指定的子带上发送的参考信号，确定所述指定的子带的信号质量；
    所述网络设备根据所述子带测量结果确定所述目标子带包括：
    所述网络设备根据所述信号质量确定所述目标子带。
  5. 根据权利要求2所述的方法，其特征在于，所述网络设备获取所述用户设备的子带测量结果，包括：
    所述网络设备获取相邻网络设备的子带的配置信息；
    所述网络设备向所述用户设备发送所述相邻网络设备的子带的配置信息；
    所述网络设备接收所述用户设备发送的所述相邻网络设备的子带的信号质量；
    所述网络设备根据所述子带测量结果确定所述目标子带，包括：
    所述网络设备根据所述相邻网络设备的子带的信号质量，确定所述目标子带。
  6. 根据权利要求5所述的方法，其特征在于，所述方法还包括：
    所述网络设备向所述用户设备发送所述目标子带的随机接入配置信息，所述随机接入配置信息用于所述用户设备随机接入到所述目标网络设备的所述目标子带。
  7. 根据权利要求1所述的方法，其特征在于，所述网络设备确定用户设备待切换到的目标子带，包括：
    所述网络设备获取所述用户设备的移动速度；
    所述网络设备根据所述用户设备的移动速度，确定所述目标子带。
  8. 根据权利要求1所述的方法，其特征在于，所述网络设备确定用户设备待切换到的目标子带，包括：
    根据所述用户设备的业务类型和/或各个子带的业务负荷，确定所述目标子带。
  9. 一种子带切换的方法，其特征在于，包括：
    用户设备接收网络设备发送的目标子带的标识信息；
    所述用户设备根据所述目标子带的标识信息确定所述目标子带的配置信息；
    所述用户设备根据所述目标子带的配置信息，切换到所述目标子带。
  10. 根据权利要求9所述的方法，其特征在于，所述用户设备接收网络设备发送的目标子带的标识信息之前，所述方法还包括：
    所述用户设备接收所述网络设备发送的所述网络设备指示测量的子带的信息；
    所述用户设备根据所述指示测量的子带的信息，确定所述指示测量的子带的信号质量；
    所述用户设备向所述网络设备发送所述指示测量的子带的信号质量。
  11. 根据权利要求9所述的方法，其特征在于，所述用户设备接收网络设备发送的目标子带的标识信息之前，所述方法还包括：
    所述用户设备接收所述网络设备发送的指示信息；
    所述用户设备根据所述指示信息在所述网络设备指定的子带上发送参考信号，所述参考信号用于所述网络设备确定所述用户设备在所述指定的子带上的信号质量。
  12. 根据权利要求9所述的方法，其特征在于，所述用户设备接收网络设备发送的目标子带的标识信息之前，所述方法还包括：
    所述用户设备接收所述网络设备发送的相邻网络设备的子带的配置信息；
    所述用户设备根据所述相邻网络设备的子带的配置信息确定所述相邻网络设备的子带的信号质量；
    所述用户设备向所述网络设备发送所述相邻网络设备的子带的信号质量。
  13. 根据权利要求12所述的方法，其特征在于，所述方法还包括：
    所述用户设备接收所述网络设备发送的目标网络设备中目标子带的随机接入配置信息；
    所述用户设备根据所述目标子带的随机接入配置信息随机接入到所述目标网络设备的所述目标子带。
  14. 根据权利要求9所述的方法，其特征在于，
    所述目标子带为所述网络设备根据所述用户设备的移动速度确定的。
  15. 根据权利要求9所述的方法，其特征在于，
    所述目标子带为所述网络设备根据所述用户设备的业务类型和/或各个子带的业务负荷确定的。
  16. 一种网络设备，其特征在于，包括：
    处理单元，用于确定用户设备待切换到的目标子带；
    发送单元，用于向所述用户设备发送所述处理单元确定的所述目标子带的标识信息，所述目标子带的标识信息用于所述用户设备确定所述目标子带的配置信息，以切换到所述目标子带。
  17. 根据权利要求16所述的网络设备，其特征在于，
    所述处理单元，具体用于获取所述用户设备的子带测量结果，根据所述子 带测量结果，确定所述目标子带。
  18. 根据权利要求17所述的网络设备，其特征在于，所述网络设备还包括接收单元，
    所述发送单元，还用于向所述用户设备发送所述网络设备指示测量的子带的信息；
    所述接收单元，用于接收所述用户设备发送的所述指示测量的子带的信号质量；
    所述处理单元，具体用于根据所述接收单元接收的信号质量确定所述目标子带。
  19. 根据权利要求17所述的网络设备，其特征在于，
    所述发送单元，还用于向所述用户设备发送指示信息，所述指示信息用于指示所述用户设备在所述网络设备指定的子带上发送参考信号；
    所述处理单元，用于根据所述用户设备在所述指定的子带上发送的参考信号，确定所述指定的子带的信号质量，并根据所述信号质量确定所述目标子带。
  20. 根据权利要求17所述的网络设备，其特征在于，所述网络设备还包括接收单元，
    所述接收单元，用于获取相邻网络设备的子带的配置信息；
    所述发送单元，还用于向所述用户设备发送所述接收单元接收的所述相邻网络设备的子带的配置信息；
    所述接收单元，还用于接收所述用户设备发送的所述相邻网络设备的子带的信号质量；
    所述处理单元，具体用于根据所述接收单元接收的所述相邻网络设备的子带的信号质量，确定所述目标网络设备的目标子带。
  21. 根据权利要求20所述的网络设备，其特征在于，
    所述发送单元，还用于向所述用户设备发送所述目标子带的随机接入配置信息，所述随机接入配置信息用于所述用户设备随机接入到所述目标网络设备的所述目标子带。
  22. 根据权利要求16所述的网络设备，其特征在于，
    所述处理单元，具体用于获取所述用户设备的移动速度，根据所述用户设 备的移动速度，确定所述目标子带。
  23. 根据权利要求16所述的网络设备，其特征在于，
    所述处理单元，具体用于根据所述用户设备的业务类型和/或各个子带的业务负荷，确定所述目标子带。
  24. 一种用户设备，其特征在于，包括：
    接收单元，用于接收网络设备发送的目标子带的标识信息；
    处理单元，用于根据所述接收单元接收的所述目标子带的标识信息确定所述目标子带的配置信息，并根据所述目标子带的配置信息，切换到所述目标子带。
  25. 根据权利要求24所述的用户设备，其特征在于，所述用户设备还包括发送单元，
    所述接收单元，还用于接收所述网络设备发送的所述网络设备指示测量的子带的信息；
    所述处理单元，还用于根据所述接收单元接收的所述指示测量的子带的信息，确定所述指示测量的子带的信号质量；
    所述发送单元，用于向所述网络设备发送所述处理单元确定的所述指示测量的子带的信号质量。
  26. 根据权利要求24所述的用户设备，其特征在于，所述用户设备还包括发送单元，
    所述接收单元，还用于接收所述网络设备发送的指示信息；
    所述发送单元，还用于根据所述接收单元接收的所述指示信息在所述网络设备指定的子带上发送参考信号，所述参考信号用于所述网络设备确定所述用户设备在所述指定的子带上的信号质量。
  27. 根据权利要求24所述的用户设备，其特征在于，所述用户设备还包括发送单元，
    所述接收单元，还用于接收所述网络设备发送的相邻网络设备的子带的配置信息；
    所述处理单元，还用于根据所述接收单元接收的所述相邻网络设备的子带的配置信息确定所述相邻网络设备的子带的信号质量；
    所述发送单元，用于向所述网络设备发送所述处理单元确定的所述相邻网络设备的子带的信号质量。
  28. 根据权利要求27所述的用户设备，其特征在于，所述用户设备还包括随机接入单元；
    所述接收单元，还用于接收所述网络设备发送的目标网络设备中目标子带的随机接入配置信息；
    所述随机接入单元，用于根据所述接收单元接收的所述目标子带的随机接入配置信息随机接入到所述目标网络设备的所述目标子带。
  29. 根据权利要求24所述的用户设备，其特征在于，
    所述目标子带为所述网络设备根据所述用户设备的移动速度确定的。
  30. 根据权利要求24所述的用户设备，其特征在于，
    所述目标子带为所述网络设备根据所述用户设备的业务类型和/或各个子带的业务负荷确定的。
  31. 一种无线通信系统，其特征在于，包括网络设备和用户设备；
    所述网络设备为上述权利要求16-23任一所述的网络设备；
    所述用户设备为上述权利要求24-30任一所述的用户设备。
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