WO2010078835A1 - 一种保护频带的使用方法及设备 - Google Patents

一种保护频带的使用方法及设备 Download PDF

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Publication number
WO2010078835A1
WO2010078835A1 PCT/CN2010/000035 CN2010000035W WO2010078835A1 WO 2010078835 A1 WO2010078835 A1 WO 2010078835A1 CN 2010000035 W CN2010000035 W CN 2010000035W WO 2010078835 A1 WO2010078835 A1 WO 2010078835A1
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WO
WIPO (PCT)
Prior art keywords
band
frequency
downlink
frequency resource
uplink
Prior art date
Application number
PCT/CN2010/000035
Other languages
English (en)
French (fr)
Inventor
唐海
李男
江海涛
Original Assignee
中国移动通信集团公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国移动通信集团公司 filed Critical 中国移动通信集团公司
Priority to US13/143,690 priority Critical patent/US20110286370A1/en
Publication of WO2010078835A1 publication Critical patent/WO2010078835A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446Resources in time domain, e.g. slots or frames
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management

Definitions

  • the present invention relates to the field of mobile communications, and in particular, to a technique for using a guard band. Background technique
  • Universal Mobile Telecommunication System (UMTS) Terrestrial wireless access uses the Time Division Duplex (TDD) and Frequency Division Duplex (FDD) modes to implement the wireless interface.
  • TDD Time Division Duplex
  • FDD Frequency Division Duplex
  • the TDD mode is a duplex mode in which the uplink data and the downlink data are transmitted using the same frequency resource (ie, carrier), and the uplink and downlink transmissions need to be switched according to time.
  • the time unit of the physical layer is divided into an uplink time unit and a downlink time unit, and the physical The time units of the layer include Time Slot (TS), OFDM symbols in an Orthogonal Frequency Division Multiplexing (OFDM) system, and the like.
  • TS Time Slot
  • OFDM Orthogonal Frequency Division Multiplexing
  • the FDD mode is a duplex mode in which two corresponding frequency resources are separated by transmission of uplink data and downlink data, and the uplink and downlink frequency intervals are generally 190 MHz.
  • RTT Radio Transmission Technology
  • CDMA Code Division Multiple Access
  • MC-CDMA Three Radio Transmission Technology (RTT) standards based on Code Division Multiple Access (CDMA) technology are the mainstream technologies of third-generation mobile communication systems (3G), including DS-CDMA and MC.
  • DS-CDMA and MC-CDMA adopt FDD mode
  • TD-CDMA adopts TDD mode.
  • ITU-Radio Communications Sector ITU-R
  • ITU-R divides the independent frequency bands for 3D FDD mode and TDD mode.
  • LTE Long Time Evolution
  • 4G fourth-generation mobile communication system
  • the coexistence of the TDD system and the FDD system also exists.
  • the management department reserves a guard band between the frequency bands of the TDD system and the FDD system during spectrum resource planning, as shown in Fig. 1, which is a schematic diagram of the guard band.
  • the guard band is used to suppress adjacent channel interference between the TDD system and the FDD system, so data transmission is not allowed in the guard band.
  • the frequency resources are very limited and non-renewable.
  • the reserved guard bands undoubtedly cause a huge waste of limited frequency resources, resulting in low utilization of mobile communication spectrum resources. Summary of the invention
  • the present invention provides a method and a device for using a guard band to effectively utilize a guard band and improve utilization of a spectrum of mobile communication resources while satisfying the suppression of adjacent channel interference when the TDD system and the FDD system coexist.
  • the present invention provides a method of using the first guard band, including:
  • the first base station in the time-division duplex TDD system allocates the first frequency resource in the uplink protection band to the first user equipment and delivers resource scheduling information, where the uplink protection band is a frequency division duplex FDD uplink frequency band and a TDD frequency band.
  • Protective band between the uplink protection band is a frequency division duplex FDD uplink frequency band and a TDD frequency band.
  • the second frequency resource includes a frequency resource in a downlink guard band and/or a TDD frequency band.
  • the frequency protection resource is the guard frequency band between the FDD downlink frequency band and the TDD frequency band.
  • the present invention provides a base station, including:
  • the resource scheduling unit is configured to allocate the first frequency resource in the uplink protection band to the user equipment and deliver the resource scheduling information, where the uplink protection band is a protection between the frequency division duplex FDD uplink frequency band and the time division duplex TDD frequency band. frequency band; a receiving unit, configured to receive, by the user equipment, the uplink data that is sent in the uplink time unit on the first frequency resource according to the resource scheduling information;
  • a sending unit configured to send downlink data to the user equipment in a downlink time unit on a second frequency resource, where the second frequency resource includes frequency resources in a downlink guard band and/or
  • the frequency resource in the TDD band, the downlink protection band is a guard band between the FDD downlink band and the TDD band.
  • the present invention provides a method for using a second guard band, including:
  • the first user equipment of the time division duplex TDD system receives the downlink data sent by the first base station in the downlink time unit on the second frequency resource in the downlink protection frequency band, where the downlink protection frequency band is a frequency division duplex FDD downlink frequency band.
  • the first frequency resource includes a frequency resource in an uplink guard band and/or a TDD frequency band.
  • the frequency protection resource is the protection frequency band between the FDD uplink frequency band and the TDD frequency band.
  • the present invention provides a user equipment, including:
  • a receiving unit configured to receive downlink data sent by the base station in a downlink time unit on a second frequency resource in a downlink protection frequency band, where the downlink protection frequency band is a frequency division duplex FDD downlink frequency band and a time division duplex TDD frequency band Protective band between
  • a sending unit configured to send uplink data to the base station in an uplink time unit on a first frequency resource, where the first frequency resource includes a frequency resource in an uplink guard band and/or a frequency resource in a TDD band
  • the uplink protection band is a guard band between the FDD uplink frequency band and the TDD frequency band.
  • the present invention provides a method of using a third guard band, including:
  • the first base station in the frequency division duplex FDD system allocates the first frequency resource in the uplink protection band to the first user equipment and delivers resource scheduling information, where the uplink protection frequency band is an FDD uplink frequency band and a time division duplex TDD frequency band.
  • Protective band between the uplink protection frequency band is an FDD uplink frequency band and a time division duplex TDD frequency band.
  • the resource includes a frequency resource corresponding to the first frequency resource and/or a frequency resource in an FDD downlink frequency band in a downlink guard band, where the downlink protection band is a guard band between the FDD downlink band and the TDD band.
  • the present invention provides a base station, including:
  • the resource scheduling unit is configured to allocate the first frequency resource in the uplink protection band to the user equipment and deliver the resource scheduling information, where the uplink protection band is a protection between the frequency division duplex FDD uplink frequency band and the time division duplex TDD frequency band.
  • Frequency band is a protection between the frequency division duplex FDD uplink frequency band and the time division duplex TDD frequency band.
  • a receiving unit configured to receive uplink data sent by the user equipment on the first frequency resource in a time period consistent with an uplink time unit of the TDD system
  • a sending unit configured to send downlink data to the user equipment on a second frequency resource, where the second frequency resource includes a frequency resource corresponding to the first frequency resource and/or an FDD downlink frequency band in a downlink guard frequency band
  • the frequency protection resource, the downlink protection frequency band is a protection frequency band between the FDD downlink frequency band and the TDD frequency band.
  • the present invention provides a method for using a fourth guard band, including:
  • the first user equipment in the frequency division duplex FDD system receives the downlink data sent by the first base station on the second frequency resource in the downlink protection frequency band in a time period consistent with the downlink time unit of the time division duplex TDD system,
  • the downlink protection band is a guard band between the FDD downlink frequency band and the TDD frequency band;
  • the first user equipment sends uplink data to the first base station in a first frequency resource, where the first frequency resource includes a frequency resource and/or an FDD uplink frequency band corresponding to the second frequency resource in an uplink guard band.
  • the frequency resource in the uplink protection band is a guard band between the FDD uplink frequency band and the TDD frequency band.
  • the present invention provides a user equipment, including:
  • a receiving unit configured to receive, in a time period consistent with a downlink time unit of the time division duplex TDD system, downlink data sent by the base station on a second frequency resource in a downlink guard band, where The protection band is a guard band between the frequency division duplex FDD downlink frequency band and the TDD frequency band; the sending unit is configured to send uplink data to the base station at the first frequency resource, where the first frequency resource includes an uplink protection band a frequency resource corresponding to the second frequency resource and/or a frequency resource in an FDD uplink frequency band, where the uplink protection band is a guard band between an FDD uplink frequency band and a TDD frequency band.
  • the present invention provides a method for using a fifth guard band, including:
  • the base station transmits downlink data to the at least one user equipment in a time period consistent with the downlink time unit of the time division duplex TDD system, and the downlink protection frequency band is a frequency division duplex FDD downlink.
  • the guard band between the band and the TDD band;
  • Each user equipment receives downlink data sent by the base station in a time period consistent with the downlink time unit on a frequency resource in the downlink protection band.
  • the method for using the first guard band provided by the present invention allocates a guard band between the FDD uplink band and the TDD band, that is, an uplink guard band, to the TDD system, and performs uplink data transmission only on the frequency resources in the uplink guard band. It can meet the requirements of suppressing adjacent channel interference when the TDD system and the FDD system coexist, and effectively utilize the frequency resources in the uplink protection frequency band, thereby improving the utilization rate of the mobile communication spectrum resources;
  • the method for using the second guard band provided by the present invention allocates a guard band between the FDD downlink frequency band and the TDD band, that is, a downlink guard band, to the TDD system, and only performs downlink data transmission on the frequency resources in the downlink guard band. It can meet the requirements of suppressing adjacent channel interference when the TDD system and the FDD system coexist, and effectively utilize the frequency resources in the downlink protection band to improve the spectrum utilization rate of the mobile communication;
  • the third protection frequency band used by the present invention uses the protection frequency band between the FDD uplink frequency band and the TDD frequency band, that is, the uplink protection frequency band, to be allocated to the FDD system, and the frequency resource in the uplink protection frequency band is only in the TDD system.
  • the uplink data transmission is performed, which can meet the requirements of suppressing adjacent channel interference when the TDD system and the FDD system coexist, and effectively utilize the frequency resources in the uplink protection frequency band, thereby improving the mobile communication frequency.
  • the fourth method for using the guard band provided by the present invention allocates a guard band between the FDD downlink frequency band and the TDD band, that is, a downlink guard band, to the TDD system, and the frequency resource in the downlink guard band is only in the TDD system.
  • the downlink data transmission is performed, which can meet the requirements of suppressing adjacent channel interference when the TDD system and the FDD system coexist, and effectively utilize the frequency resources in the downlink protection frequency band, thereby improving the mobile communication spectrum.
  • the fifth method for using the guard band provided by the present invention uses the guard band between the FDD downlink frequency band and the TDD band, that is, the downlink guard band, for system broadcast, only in a time period consistent with the downlink time unit of the TDD system.
  • Sending downlink data to multiple user equipments on frequency resources in the downlink protection band can meet the requirements of suppressing adjacent frequency interference when the TDD system and the FDD system coexist, and effectively utilize the frequency resources in the downlink protection band to improve the mobility. Communication spectrum resource utilization.
  • FIG. 1 is a schematic diagram of a guard band in the prior art
  • FIG. 2 is a schematic diagram of an implementation principle of an embodiment of the present invention.
  • FIG. 3 is a flowchart of data transmission in a TDD system according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of data transmission in an FDD system according to Embodiment 2 of the present invention.
  • FIG. 6 is a flow chart of data transmission in a third FDD system according to an embodiment of the present invention.
  • FIG. 7 is a flowchart of data transmission in a fourth FDD system according to an embodiment of the present invention.
  • FIG. 9 is a flowchart of data transmission of a system C for system broadcasting according to Embodiment 5 of the present invention.
  • FIG. 10 is a flowchart of a method for using a first protection band according to an embodiment of the present invention.
  • FIG. 11 is a structural block diagram of a base station in a TDD system according to an embodiment of the present invention.
  • FIG. 12 is a flowchart of a method for using a second guard band according to an embodiment of the present invention.
  • FIG. 13 is a structural block diagram of a user equipment in a TDD system according to an embodiment of the present invention.
  • 14 is a flowchart of a method for using a third guard band according to an embodiment of the present invention
  • 15 is a structural block diagram of a base station in an FDD system according to an embodiment of the present invention
  • 16 is a flowchart of a method for using a fourth guard band according to an embodiment of the present invention.
  • FIG. 17 is a structural block diagram of a user equipment in an FDD system according to an embodiment of the present invention. detailed description
  • the protection band needs to be reserved in order to suppress adjacent channel interference, resulting in serious waste of frequency resources and low utilization rate of mobile communication spectrum resources, thereby providing a protection.
  • the method of using the frequency band is to effectively utilize the frequency resources in the guard band under the premise of satisfying the adjacent channel interference when the TDD system and the FDD system coexist, and improve the utilization rate of the mobile communication frequency resource.
  • the FDD system uses two separate symmetric frequency bands, including the FDD uplink frequency band for uplink data transmission and the FDD downlink frequency band for downlink data transmission
  • the prior art reserves between the frequency bands of the TDD system and the FDD system.
  • Two symmetric guard bands separated.
  • the protection band between the FDD uplink frequency band and the TDD frequency band may be referred to as an uplink protection frequency band.
  • Zone A the main purpose of the reserved uplink protection frequency band Zone A is to suppress the interference of the TDD downlink to the FDD uplink, and the basic adjacent frequency can be satisfied.
  • the ratio of the suppression ratio (ACIR) indicator; the protection band between the FDD downlink band and the TDD band can be called the downlink protection band. It is represented by Zone C.
  • the main purpose of the reserved downlink protection band Zone C is to suppress the TDD uplink to the FDD downlink. Interference, and the interference of the TDD downlink to the FDD downlink in the Zone C and the interference of the FDD downlink to the TDD downlink can meet the requirements of the basic adjacent frequency rejection ratio (ACIR) indicator.
  • ACIR basic adjacent frequency rejection ratio
  • the TDD frequency band is represented by Zone B.
  • the implementation principle of the embodiment of the present invention is as shown in FIG. 2, according to the time unit allocation structure of the TDD system, if the Zone A is satisfied only for the uplink data transmission, the Zone C is only used for the downlink data transmission, and the transmission is performed.
  • the time period of the uplink data and the downlink data is consistent with the uplink time unit and the downlink time unit of the TDD system, so that for Zone A, TDD uplink and FDD
  • the interference between the uplinks can meet the requirements of the basic ACIR.
  • the interference between the TDD downlink and the FDD downlink can meet the requirements of the basic ACIR index, and the adjacent channel interference can be suppressed when the TDD system and the FDD system coexist.
  • the time unit of the TDD system includes a time slot, an OFDM symbol, and the like.
  • the embodiment of the present invention provides a method for using a guard band, which may include a thousand application scenarios, for example, application scenario 1 is to assign both Zone A and Zone C to the TDD system; Zone A is assigned to the TDD system for use, and Zone C is assigned to the FDD system.
  • Application scenario 3 is to assign Zone A and Zone C to the FDD system.
  • Application scenario 4 is to assign ZoneA to the FDD system, and use Zone C. Assigned to the TDD system for use;
  • Application scenario 5 is to use Zone C separately for system broadcast.
  • other application scenarios may also be included, such as assigning Zone A to the TDD system, Zone C is still not allowed to be used in the prior art, or Zone C is allocated to the FDD system, and Zone A is still the same as in the prior art. Not allowed, etc. will not be repeated.
  • Zone A, Zone B, and Zone C are used in the TDD system.
  • Zone A and Zone C can be paired.
  • the process of data transmission between the base station and the user equipment in the TDD system using the frequency resources in the Zone A and the Zone C, as shown in FIG. 3, includes the following steps:
  • the base station allocates the frequency resource in the zone A (referred to as the first frequency resource for the sake of distinguishing) to the user equipment and sends the resource scheduling information.
  • the user equipment sends the uplink data to the base station in the uplink time unit according to the resource scheduling information, and the base station receives the user equipment on the first frequency resource in the Zone A. Carrying up uplink data sent in the uplink time unit;
  • the base station switches the first frequency resource in the area A to the frequency resource in the area C (for the purpose of distinguishing, the second frequency resource is called);
  • the base station bears the downlink data in the downlink time on the second frequency resource in the Zone C.
  • the unit sends the data to the user equipment.
  • the user equipment receives the downlink data sent by the base station in the downlink time unit on the second frequency resource in the zone C.
  • the user equipment may switch the second frequency resource in the zone C to the first frequency resource in the zone A, and transmit the uplink data in the uplink time unit to the base station on the first frequency resource in the zone A, and transmit the frequency.
  • Switching pairing uses the frequency resources in Zone A and Zone C to repeat the above data transfer process.
  • the zone A and the zone B can be jointly scheduled, and the zone B and the zone C can be jointly scheduled, and the user equipment can simultaneously send the uplink data to the base station on the frequency resources in the zone A and the zone B.
  • the base station can also send downlink data to the user equipment on the frequency resources in the Zone B and the Zone C at the same time.
  • Zone A and Zone B are used in the TDD system
  • Zone C FDD uplink frequency band
  • FDD downlink frequency band are used in the FDD system.
  • the process of data transmission by the base station and the user in the TDD system using the frequency resources in Zone A and Zone B, as shown in FIG. 4, includes the following steps:
  • the base station allocates the frequency resource in the zone A (referred to as the first frequency resource for the sake of distinction) to the user equipment and sends the resource scheduling information.
  • the user equipment sends the uplink data to the base station in the uplink time unit according to the resource scheduling information, and the base station receives the user on the first frequency resource in the Zone A, correspondingly, the base station receives the user on the first frequency resource in the Zone A.
  • the device bears the uplink data sent in the uplink time unit;
  • the base station switches the first frequency resource in the area A to the frequency resource in the area B (for the purpose of distinguishing, it is called the second frequency resource);
  • the base station sends the downlink data to the user equipment in the downlink time unit on the second frequency resource in the zone B.
  • the user equipment is on the second frequency resource in the Zone B, and the receiving base station is in the downlink.
  • the user equipment can switch the second frequency resource in the Zone B to the first frequency resource in the Zone A, and the uplink data is carried in the uplink time unit to the base station in the first frequency resource in the Zone A.
  • the second frequency resource in the Zone B can be directly used without frequency switching.
  • the uplink data is carried in the uplink time unit and sent to the base station.
  • the process of data transmission between the base station and the user equipment in the FDD system using the frequency resources in the FDD uplink frequency band and the FDD downlink frequency band, as shown in FIG. 5, includes the following steps:
  • the base station sends the downlink data to the user equipment on the frequency resource in the Zone C (referred to as a third frequency resource for convenience of distinction) in a time period consistent with the downlink time unit of the TDD system, and correspondingly, the user
  • the device receives the downlink data sent by the base station on the third frequency resource in the Zone C.
  • the user equipment switches the third frequency resource in the area C to the frequency resource in the FDD uplink frequency band (referred to as a fourth frequency resource for convenience of distinction);
  • the user equipment sends the uplink data to the base station on the fourth frequency resource in the FDD uplink frequency band.
  • the base station receives the uplink data sent by the user equipment on the fourth frequency resource in the FDD uplink frequency band.
  • the base station may switch the fourth frequency resource in the FDD uplink frequency band to the third frequency resource in the Zone C, and in the time period consistent with the downlink time unit of the TDD system, on the third frequency resource in the Zone C.
  • the downlink data is sent to the user equipment, and the fourth frequency resource in the FDD uplink frequency band is switched to the corresponding frequency resource in the FDD downlink frequency band, and the downlink data is sent to the user equipment on the frequency resource in the FDD downlink frequency band.
  • the Zone A, the Zone C, the FDD uplink frequency band, and the FDD downlink frequency band are used in the FDD system, and the Zone A and the Zone C can be paired.
  • the process of data transmission between the base station and the user equipment in the FDD system using the frequency resources in Zone A and Zone C, as shown in Figure 6, includes the following steps:
  • the base station allocates the frequency resource in the zone A (referred to as the first frequency resource for the sake of distinction) to the user equipment and sends the resource scheduling information.
  • the user equipment sends, according to the resource scheduling information, the uplink data to the base station in the first frequency resource in the Zone A in a time period consistent with the uplink time unit of the TDD system, and correspondingly, the base station is in the Zone A.
  • the base station switches the first frequency resource in the Zone A to the frequency resource corresponding to the first frequency resource in the Zone C (referred to as a second frequency resource for convenience of distinction);
  • the base station sends the downlink data to the user equipment on the second frequency resource in the Zone C in a time period that is consistent with the downlink time unit of the TDD system, and correspondingly, the second frequency resource of the user equipment in the Zone C. Up, receiving downlink data sent by the base station.
  • the user equipment may switch the second frequency resource in the Zone C to the first frequency resource in the Zone A, in the time period consistent with the uplink time unit of the TDD system, on the first frequency resource in the Zone A.
  • the uplink data is sent to the base station, and the data transmission process is repeatedly performed by frequency switching pairing using the corresponding frequency resources in Zone A and Zone C.
  • the uplink frequency bands of the Zone A and the FDD can be jointly scheduled, and the downlink frequency bands of the Zone C and the FDD can be jointly scheduled, and the user equipment can simultaneously send uplink resources on the frequency resources in the uplink frequency band of the Zone A and the FDD.
  • the base station can also send downlink data in the FDD downlink frequency band and the frequency resources in the Zone C at the same time.
  • Zone A, FDD uplink frequency band and FDD downlink frequency band are used in the FDD system, and Zone B and Zone C are used in the TDD system.
  • the process of data transmission between the base station and the user equipment in the FDD system using the frequency resources in the Zone A, the FDD uplink frequency band, and the FDD downlink frequency band, as shown in FIG. 7, includes the following steps:
  • the base station allocates the frequency resource in the zone A (referred to as the first frequency resource for the sake of distinction) to the user equipment and delivers the resource scheduling information.
  • S702 The user equipment sends, according to the resource scheduling information, the uplink data to the base station in the first frequency resource in the Zone A in a time period consistent with the uplink time unit of the TDD system, and correspondingly, the base station is in the Zone A. Receiving uplink data sent by the user equipment on the first frequency resource;
  • the base station switches the first frequency resource in the area A to the frequency resource in the FDD downlink frequency band (referred to as a second frequency resource for convenience of distinction);
  • the base station sends the downlink data to the user equipment on the second frequency resource in the FDD downlink frequency band, and correspondingly, the user equipment receives the base station on the second frequency resource in the FDD downlink frequency band.
  • the user equipment may switch the second frequency resource in the FDD downlink frequency band to the first frequency resource in the Zone A, and the first frequency resource in the Zone A in the time period consistent with the uplink time unit of the TDD system.
  • the uplink data is sent to the base station, and the second frequency resource in the FDD downlink frequency band is switched to the corresponding frequency resource in the FDD uplink frequency band, and the uplink data is sent to the base station in the frequency resource in the FDD uplink frequency band.
  • the process of data transmission between the base station and the user in the TDD system using the frequency resources in the Zone and the Zone C, as shown in FIG. 8, includes the following steps:
  • the base station transmits the downlink data in the downlink time unit to the user equipment, and correspondingly, the third frequency of the user equipment in the zone C, on the frequency resource in the zone C (referred to as the third frequency resource for the sake of distinction). Receiving downlink data sent by the base station;
  • the user equipment switches the third frequency resource in the zone C to the frequency resource in the zone B (referred to as a fourth frequency resource for convenience of distinguishing);
  • the user equipment sends the uplink data to the base station in the uplink time unit on the fourth frequency resource in the zone B.
  • the base station receives the uplink data sent by the user equipment on the fourth frequency resource in the zone B. ;
  • the base station may switch the fourth frequency resource in the Zone B to the third frequency resource in the Zone C, and the downlink data is carried in the downlink time unit to the user equipment on the third frequency resource in the Zone C.
  • the fourth frequency resource in the zone B can be directly used without frequency switching, and the downlink data is carried in the downlink time unit and sent to the user equipment.
  • Embodiment 5 is directed to application scenario 5.
  • Zone C is used for system broadcast separately. For example, using Zone C to broadcast mobile TV programs to user equipment, as shown in FIG. 9, the following steps are included:
  • the base station sends downlink data to the at least one user equipment in a time period consistent with the downlink time unit of the TDD system on the frequency resource in the area C;
  • the user equipment receives the downlink data sent by the base station in a time period consistent with the downlink time unit of the TDD system on the frequency resource in the Zone C.
  • the embodiment of the present invention provides a method for using a guard band. As shown in FIG. 10, the method includes:
  • the first base station in the TDD system allocates the first frequency resource in the uplink protection band to the first user equipment, and sends the resource scheduling information;
  • the first base station receives, by the first user equipment, the uplink data that is sent in the uplink time unit on the first frequency resource according to the resource scheduling information.
  • the first base station sends the downlink data to the first user equipment in the downlink time unit on the second frequency resource, where the second frequency resource includes the frequency resource of the downlink protection band and/or the frequency resource in the TDD frequency band.
  • the second frequency resource is a frequency resource in a TDD frequency band
  • the method may further include the following steps:
  • the second base station in the FDD system transmits the downlink data to the second user equipment on the third frequency resource in the downlink protection band in the time period consistent with the downlink time unit of the TDD system; the second user equipment will be the third
  • the frequency resource is switched to the fourth frequency resource in the FDD uplink frequency band, and the uplink data is sent to the second base station on the fourth frequency resource.
  • an embodiment of the present invention provides a base station in a TDD system.
  • a possible structure of the base station includes:
  • the resource scheduling unit 1101 is configured to allocate the first frequency resource in the uplink protection band to the user equipment, and send the resource scheduling information;
  • the receiving unit 1102 is configured to receive uplink data that is sent by the user equipment in the uplink time unit on the first frequency resource according to the resource scheduling information.
  • the sending unit 1103 is configured to send the downlink data to the user equipment in the downlink time unit on the second frequency resource, where the second frequency resource includes the frequency resource of the downlink guard band and/or the frequency resource in the TDD band.
  • the embodiment of the present invention provides a method for using a guard band. As shown in FIG. 12, the method includes:
  • the first user equipment of the TDD system receives the second base station in the downlink protection band.
  • the downlink data sent in the downlink time unit is carried on the frequency resource;
  • the first user equipment sends the uplink data in the uplink time unit to the first base station, where the first frequency resource includes the frequency resource in the uplink guard band and/or the frequency resource in the TDD band. .
  • the first frequency resource is a frequency resource in a TDD frequency band
  • the method may further include the following steps:
  • the second user equipment in the FDD system transmits uplink data to the second base station on the third frequency resource in the uplink protection frequency band in a time period consistent with the uplink time unit of the TDD system; the second base station transmits the third frequency
  • the resource is switched to the fourth frequency resource in the FDD downlink frequency band, and the downlink data is sent to the second user equipment on the fourth frequency resource.
  • an embodiment of the present invention provides a user equipment in a TDD system.
  • a possible structure of the user equipment includes:
  • the receiving unit 1301 is configured to receive downlink data that is sent by the base station in the downlink time unit on the second frequency resource in the downlink protection band;
  • the sending unit 1302 is configured to send the uplink data in the uplink time unit to the base station on the first frequency resource, where the first frequency resource includes a frequency resource in the uplink guard band and/or a frequency resource in the TDD band.
  • the embodiment of the present invention provides a method for using a guard band. As shown in FIG. 14, the method includes:
  • the first base station in the FDD system allocates the first frequency resource in the uplink protection band to the first user equipment, and sends the resource scheduling information;
  • the first base station receives the uplink data that is sent by the first user equipment on the first frequency resource according to the resource scheduling information in a time period that is consistent with the uplink time unit of the TDD system.
  • the first base station sends the downlink data to the first user equipment on the second frequency resource, where the second frequency resource includes the frequency resource corresponding to the first frequency resource and/or the frequency resource in the FDD downlink frequency band in the downlink guard band.
  • the frequency resource corresponding to the first frequency resource the downlink data Transmitted in a time period consistent with the downlink time unit of the TDD system.
  • the second frequency resource is a frequency resource in a downlink frequency band of the FDD, and the method may further include the following steps:
  • the second base station in the TDD system transmits the downlink data in the downlink time unit to the second user equipment on the third frequency resource in the downlink protection band;
  • the second user equipment switches the third frequency resource to the fourth frequency resource in the TDD frequency band, and carries the uplink data in the uplink time unit to the second base station on the fourth frequency resource.
  • an embodiment of the present invention provides a base station in an FDD system.
  • a possible structure of the base station includes:
  • the resource scheduling unit 1501 is configured to allocate the first frequency resource in the uplink protection band to the user equipment and deliver the resource scheduling information;
  • the receiving unit 1502 is configured to receive, in a time period consistent with an uplink time unit of the TDD system, uplink data sent by the user equipment on the first frequency resource in the uplink protection band;
  • the sending unit 1503 is configured to send downlink data to the user equipment on the second frequency resource, where the second frequency resource includes a frequency resource corresponding to the first frequency resource and/or a frequency resource in the FDD downlink frequency band in the downlink guard band.
  • the embodiment of the present invention provides a method for using a guard band. As shown in FIG. 16, the method includes:
  • the user equipment in the FDD system receives the downlink data sent by the base station on the second frequency resource in the downlink protection band in a time period consistent with the downlink time unit of the TDD system;
  • the user equipment sends the uplink data to the base station in the first frequency resource, where the first frequency resource includes the frequency resource corresponding to the second frequency resource in the uplink guard band and/or the frequency resource in the FDD uplink frequency band.
  • the uplink data is sent in a time period corresponding to the uplink time unit of the TDD system on the frequency resource corresponding to the second frequency resource in the uplink guard band.
  • the first frequency resource is a frequency resource in an FDD uplink frequency band
  • the method may further include the following steps:
  • the second user equipment in the TDD system sends the uplink data to the second base station in the uplink time unit on the third frequency resource in the uplink protection band;
  • the second base station switches the third frequency resource to the fourth frequency resource in the TDD frequency band, and transmits the downlink data in the downlink time unit to the second user equipment on the fourth frequency resource.
  • an embodiment of the present invention provides a user equipment in an FDD system, as shown in FIG. 17, a possible structure of the user equipment, including:
  • the receiving unit 1701 is configured to receive downlink data sent by the base station on the second frequency resource in the downlink protection band in a time period consistent with the downlink time unit of the TDD system;
  • the sending unit 1702 is configured to send the uplink data to the base station in the first frequency resource, where the first frequency resource includes a frequency resource corresponding to the second frequency resource in the uplink guard band and/or a frequency resource in the uplink frequency band of the FDD.
  • the uplink guard band or the downlink guard band can be respectively allocated to the TDD system or the FDD system, and the uplink and downlink guard bands can also be allocated to the TDD at the same time.
  • the system or the FDD system is used, and the downlink protection band can also be used for system broadcast independently.

Description

一种保护频带的使用方法及设备 本申请要求在 2009年 1月 8日提交中国专利局、申请号为 200910076542.6 发明名称为"一种保护频带的使用方法及设备"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
本发明涉及移动通信领域, 尤其涉及一种保护频带的使用技术。 背景技术
通用移动通信系统 ( Universal Mobile Telecommunication System, UMTS ) 地面无线接入采用时分双工 (Time Division Duplex, TDD ) 和频分双工 ( Frequency Division Duplex, FDD ) 两种模式实现无线接口。
TDD模式是上行数据和下行数据的传输使用同一频率资源 (即载波) 的 双工方式, 需要根据时间进行上下行传输的切换, 物理层的时间单元被分为 上行时间单元和下行时间单元,物理层的时间单元包括时隙(Time Slot, TS ), 正交频分复用 (OFDM ) 系统中的 OFDM符号, 等等。 FDD模式是上行数据 和下行数据的传输使用分离的两个对应频率资源的双工方式, 上下行频率间 隔一般为 190MHz。
基于码分多址接入 ( Code Division Multiple Access, CDMA )技术的三种 无线传输技术 ( Radio Transmission Technology, RTT )标准是第三代移动通信 系统(3G )的主流技术, 包括 DS-CDMA、 MC-CDMA和 TD-CDMA。 其中, DS-CDMA和 MC-CDMA采用 FDD模式, TD-CDMA采用 TDD模式。 国际 电信联盟无线电通信组( ITU-Radio Communications Sector, ITU-R )为 3G的 FDD模式和 TDD模式划分了独立的频段,随着 3G的组网, TDD系统和 FDD 系统将共存于 3G网络中。 在长期演进(Long Time Evolution, LTE ) 系统以 及后续的第四代移动通信系统(4G ) 系统中, TDD系统和 FDD系统共存的 情况同样存在。
针对 FDD系统和 TDD系统共存的情况, 管理部门在频谱资源规划时, 在 TDD系统和 FDD系统的频段之间预留保护频带, 如图 1所示, 为保护频带示意 图。 保护频带用于抑制 TDD系统和 FDD系统之间的邻频干扰, 所以保护频带 内不允许进行数据传输。 众所周知, 频率资源非常有限并且不可再生, 预留 的保护频带无疑对有限的频率资源造成了巨大的浪费, 导致移动通信频谱资 源利用率较低。 发明内容
本发明提供一种保护频带的使用方法及设备, 用以在满足 TDD 系统和 FDD 系统共存时抑制邻频干扰的前提下, 有效利用保护频带, 提升移动通信 频谱资源利用率。
本发明提供了第一种保护频带的使用方法, 包括:
时分双工 TDD系统中的第一基站将上行保护频带内的第一频率资源分配 给第一用户设备并下发资源调度信息, 所述上行保护频带为频分双工 FDD上 行频段与 TDD频段之间的保护频带;
所述第一基站接收第一用户设备根据资源调度信息在所述第一频率资源 上承栽在上行时间单元中发送的上行数据;
所述第一基站在第二频率资源上将下行数据承载在下行时间单元中发送 给所述第一用户设备, 所述第二频率资源包括下行保护频带内的频率资源和 / 或 TDD频段内的频率资源,所述下行保护频带为 FDD下行频段与 TDD频段 之间的保护频带。
相应的, 本发明提供了一种基站, 包括:
资源调度单元, 用于将上行保护频带内的第一频率资源分配给用户设备 并下发资源调度信息, 所述上行保护频带为频分双工 FDD上行频段与时分双 工 TDD频段之间的保护频带; 接收单元, 用于接收用户设备根据资源调度信息在所述第一频率资源上 承栽在上行时间单元中发送的上行数据;
发送单元, 用于在第二频率资源上将下行数据承载在下行时间单元中发 送给所述用户设备, 所述第二频率资源包括下行保护频带内的频率资源和 /或
TDD频段内的频率资源 , 所述下行保护频带为 FDD下行频段与 TDD频段之 间的保护频带。
本发明提供了第二种保护频带的使用方法, 包括:
时分双工 TDD系统的第一用户设备接收第一基站在下行保护频带内的第 二频率资源上承栽在下行时间单元中发送的下行数据, 所述下行保护频带为 频分双工 FDD下行频段与 TDD频段之间的保护频带;
所述第一用户设备在第一频率资源上将上行数据承载在上行时间单元中 发送给所述第一基站, 所述第一频率资源包括上行保护频带内的频率资源和 / 或 TDD频段内的频率资源 , 所述上行保护频带为 FDD上行频段与 TDD频段 之间的保护频带。
相应的, 本发明提供了一种用户设备, 包括:
接收单元, 用于在下行保护频带内的第二频率资源上接收基站承栽在下 行时间单元中发送的下行数据, 所述下行保护频带为频分双工 FDD下行频段 与时分双工 TDD频段之间的保护频带;
发送单元, 用于在第一频率资源上将上行数据承栽在上行时间单元中发 送给所述基站, 所述第一频率资源包括上行保护频带内的频率资源和 /或 TDD 频段内的频率资源, 所述上行保护频带为 FDD上行频段与 TDD频段之间的 保护频带。
本发明提供了第三种保护频带的使用方法, 包括:
频分双工 FDD系统中的第一基站将上行保护频带内的第一频率资源分配 给第一用户设备并下发资源调度信息, 所述上行保护频带为 FDD上行频段与 时分双工 TDD频段之间的保护频带;
所述第一基站在与 TDD系统的上行时间单元相一致的时间段中,接收所 述第一用户设备根据资源调度信息在所述第一频率资源上发送的上行数据; 所述第一基站在第二频率资源上将下行数据发送给所述第一用户设备, 所述第二频率资源包括下行保护频带内与所述第一频率资源对应的频率资源 和 /或 FDD 下行频段内的频率资源, 所述下行保护频带为 FDD 下行频段与 TDD频段之间的保护频带。
相应的, 本发明提供了一种基站, 包括:
资源调度单元, 用于将上行保护频带内的第一频率资源分配给用户设备 并下发资源调度信息, 所述上行保护频带为频分双工 FDD上行频段与时分双 工 TDD频段之间的保护频带;
接收单元, 用于在与 TDD系统的上行时间单元相一致的时间段中, 接收 用户设备在所述第一频率资源上发送的上行数据;
发送单元, 用于在第二频率资源上将下行数据发送给所述用户设备, 所 述第二频率资源包括下行保护频带内与所述第一频率资源对应的频率资源和 / 或 FDD下行频段内的频率资源, 所述下行保护频带为 FDD下行频段与 TDD 频段之间的保护频带。
本发明提供了第四种保护频带的使用方法, 包括:
频分双工 FDD系统中的第一用户设备在与时分双工 TDD系统的下行时 间单元相一致的时间段中 , 接收第一基站在下行保护频带内的第二频率资源 上发送的下行数据, 所述下行保护频带为 FDD下行频段与 TDD频段之间的 保护频带;
所述第一用户设备在第一频率资源将上行数据发送给所述第一基站, 所 述第一频率资源包括上行保护频带内与所述第二频率资源对应的频率资源和 / 或 FDD上行频段内的频率资源, 所述上行保护频带为 FDD上行频段与 TDD 频段之间的保护频带。
相应的, 本发明提供了一种用户设备, 包括:
接收单元, 用于在与时分双工 TDD系统的下行时间单元相一致的时间段 中, 接收基站在下行保护频带内的第二频率资源上发送的下行数据, 所述下 行保护频带为频分双工 FDD下行频段与 TDD频段之间的保护频带; 发送单元, 用于在第一频率资源将上行数据发送给所述基站, 所述第一 频率资源包括上行保护频带内与所述第二频率资源对应的频率资源和 /或 FDD 上行频段内的频率资源, 所述上行保护频带为 FDD上行频段与 TDD频段之 间的保护频带。
本发明提供了第五种保护频带的使用方法, 包括:
基站在下行保护频带内的频率资源上, 在与时分双工 TDD系统的下行时 间单元相一致的时间段中, 向至少一个用户设备发送下行数据, 所述下行保 护频带为频分双工 FDD下行频段与 TDD频段之间的保护频带;
各用户设备在所述下行保护频带内的频率资源上, 在与所述下行时间单 元相一致的时间段中, 接收所述基站发送的下行数据。
本发明提供的第一种保护频带的使用方法, 将 FDD上行频段与 TDD频 段之间的保护频带即上行保护频带分配给 TDD系统使用, 在上行保护频带内 的频率资源上只进行上行数据的传输, 能够满足 TDD系统和 FDD系统共存 时抑制邻频干扰的要求, 同时有效利用了上行保护频带内的频率资源, 提升 了移动通信频谱资源利用率;
本发明提供的第二种保护频带的使用方法, 将 FDD下行频段与 TDD频 段之间的保护频带即下行保护频带分配给 TDD系统使用, 在下行保护频带内 的频率资源上只进行下行数据的传输, 能够满足 TDD系统和 FDD系统共存 时抑制邻频干扰的要求, 同时有效利用了下行保护频带内的频率资源, 提升 了移动通信频谱资源利用率;
本发明提供的第三种保护频带的使用方法, 将 FDD上行频段与 TDD频 段之间的保护频带即上行保护频带分配给 FDD系统使用, 在上行保护频带内 的频率资源上, 只在与 TDD系统的上行时间单元相一致的时间段中, 进行上 行数据的传输, 能够满足 TDD系统和 FDD系统共存时抑制邻频干扰的要求, 同时有效利用了上行保护频带内的频率资源, 提升了移动通信频语资源利用 本发明提供的第四种保护频带的使用方法, 将 FDD下行频段与 TDD频 段之间的保护频带即下行保护频带分配给 TDD系统使用, 在下行保护频带内 的频率资源上, 只在与 TDD系统的下行时间单元相一致的时间段中, 进行下 行数据的传输, 能够满足 TDD系统和 FDD系统共存时抑制邻频干扰的要求, 同时有效利用了下行保护频带内的频率资源, 提升了移动通信频谱资源利用 率;
本发明提供的第五种保护频带的使用方法, 将 FDD下行频段与 TDD频段 之间的保护频带即下行保护频带用于系统广播, 只在与 TDD系统的下行时间 单元相一致的时间段中, 在下行保护频带内的频率资源上向多个用户设备发 送下行数据, 能够满足 TDD系统和 FDD系统共存时抑制邻频千扰的要求, 同 时有效利用了下行保护频带内的频率资源, 提升了移动通信频谱资源利用率。 附图说明
图 1为现有技术中保护频带示意图;
图 2为本发明实施例的实现原理示意图;
图 3为本发明实施例一 TDD系统中的数据传输流程图;
图 4为本发明实施例二 TDD系统中的数据传输流程图;
图 5为本发明实施例二 FDD系统中的数据传输流程图;
图 6为本发明实施例三 FDD系统中的数据传输流程图;
图 7为本发明实施例四 FDD系统中的数据传输流程图;
图 8为本发明实施例四 TDD系统中的数据传输流程图;
图 9为本发明实施例五 Zone C用于系统广播的数据传输流程图; 图 10为本发明实施例中第一种保护频带的使用方法流程图;
图 11为本发明实施例 TDD系统中基站的结构框图;
图 12为本发明实施例中第二种保护频带的使用方法流程图;
图 13为本发明实施例 TDD系统中用户设备的结构框图;
图 14为本发明实施例中第三种保护频带的使用方法流程图; 图 15为本发明实施例 FDD系统中基站的结构框图;
图 16为本发明实施例中第四种保护频带的使用方法流程图;
图 17为本发明实施例 FDD系统中用户设备的结构框图。 具体实施方式
本发明实施例针对现有技术中 TDD系统和 FDD系统共存时, 为了抑制 邻频干扰需要预留保护频带, 导致频率资源严重浪费, 移动通信频谱资源利 用率较低的问题, 提供了一种保护频带的使用方法, 用以在满足 TDD系统和 FDD 系统共存时抑制邻频干扰的前提下, 有效利用保护频带内的频率资源, 提升移动通信频 i普资源利用率。
首先对本发明实施例的实现原理进行介绍。
由于 FDD系统使用分离的两个对称频段,包括用于上行数据传输的 FDD 上行频段和用于下行数据传输的 FDD下行频段, 所以现有技术中在 TDD系 统和 FDD系统的频段之间预留了分离的两个对称保护频带。 其中, FDD上行 频段和 TDD频段之间的保护频带可以称为上行保护频带, 用 Zone A表示, 预留上行保护频带 Zone A的主要目的是抑制 TDD下行对 FDD上行的干扰, 可以满足基本邻频抑制比(ACIR)指标的要求; FDD下行频段和 TDD频段 之间的保护频带可以称为下行保护频带, 用 Zone C表示, 预留下行保护频带 Zone C的主要目的是抑制 TDD上行对 FDD下行的干扰, 而 Zone C内 TDD 下行对 FDD下行的干扰以及 FDD下行对 TDD下行的干扰, 可以满足基本邻 频抑制比 (ACIR )指标的要求。 为了方便描述, 本发明实施例中, 将 TDD 频段用 Zone B表示。
基于上述分析, 本发明实施例的实现原理如图 2所示, 根据 TDD系统的 时间单元分配结构, 如果满足 Zone A仅用于上行数据的传输、 Zone C仅用于 下行数据的传输, 并且传输上行数据、 下行数据的时间段与 TDD系统的上行 时间单元、 下行时间单元相一致, 这样对于 Zone A来说, TDD上行与 FDD 上行之间的干扰可以满足基本 ACIR指标的要求, 对于 Zone C来说, TDD下 行与 FDD下行之间的干扰可以满足基本 ACIR指标的要求, 能够达到 TDD 系统和 FDD系统共存时抑制邻频干扰的目的。本发明实施例中, TDD系统的 时间单元包括时隙, OFDM符号, 等等。
在上述实现原理的指导下, 本发明实施例提供了保护频带的使用方法, 可以包括若千应用场景, 例如, 应用场景一为将 Zone A和 Zone C均分配给 TDD系统使用; 应用场景二为将 Zone A分配给 TDD系统使用,将 Zone C分 配给 FDD系统使用; 应用场景三为将 Zone A和 Zone C均分配给 FDD系统 使用; 应用场景四为将 ZoneA分配给 FDD系统使用,将 Zone C分配给 TDD 系统使用; 应用场景五为将 Zone C单独用于系统广播。 当然, 还可以包括其 它应用场景, 例如将 Zone A分配给 TDD系统使用, Zone C仍与现有技术中 一样不允许使用, 或者 Zone C分配给 FDD系统使用, Zone A仍与现有技术 中一样不允许使用, 等等不再赘述。
下面将针对各种不同的应用场景, 对本发明实施例提供的保护频带的使 用方法进行详细说明。
实施例一
实施例一针对应用场景一,在 TDD系统中使用 ZoneA、Zone B和 Zone C, 其中 Zone A和 Zone C可以配对使用。 TDD系统中的基站和用户设备使用 Zone A和 Zone C内的频率资源进行数据传输的过程,如图 3所示, 包括如下步驟:
5301、基站将 Zone A内的频率资源(为了便于区分,称为第一频率资源) 分配给用户设备并下发资源调度信息;
5302、 用户设备根据资源调度信息, 在 ZoneA内的第一频率资源上将上 行数据承栽在上行时间单元中发送给基站, 相应的, 基站在 Zone A内的第一 频率资源上, 接收用户设备承栽在上行时间单元中发送的上行数据;
5303、基站将 ZoneA内的第一频率资源切换为 Zone C内的频率资源(为 了便于区分, 称为第二频率资源);
S304> 基站在 Zone C内的第二频率资源上, 将下行数据承栽在下行时间 单元中发送给用户设备, 相应的, 用户设备在 Zone C内的第二频率资源上, 接收基站承栽在下行时间单元中发送的下行数据。
后续, 用户设备可以将 Zone C内的第二频率资源切换为 Zone A内的第 一频率资源, 在 Zone A内的第一频率资源上将上行数据承载在上行时间单元 中发送给基站, 通过频率切换配对使用 Zone A和 Zone C内的频率资源重复 执行上述数据传输过程。 需要指出的是, 本实施例中, Zone A和 Zone B可以 被联合调度, Zone B和 Zone C可以被联合调度,用户设备可以同时在 Zone A 和 Zone B内的频率资源上向基站发送上行数据, 基站也可以同时在 Zone B 和 Zone C内的频率资源上向用户设备发送下行数据,
实施例二
实施例二针对应用场景二,在 TDD系统中使用 Zone A和 Zone B,在 FDD 系统中使用 Zone C、 FDD上行频段和 FDD下行频段。 TDD系统中的基站和 用户设 ^吏用 Zone A和 Zone B内的频率资源进行数据传输的过程, 如图 4 所示, 包括如下步骤:
5401、基站将 Zone A内的频率资源(为了便于区分,称为第一频率资源) 分配给用户设备并下发资源调度信息;
5402、 用户设备根据资源调度信息, 在 Zone A内的第一频率资源上将上 行数据承栽在上行时间单元中发送给基站, 相应的, 基站在 Zone A内的第一 频率资源上, 接收用户设备承栽在上行时间单元中发送的上行数据;
5403、基站将 Zone A内的第一频率资源切换为 Zone B内的频率资源(为 了便于区分, 称为第二频率资源);
5404、 基站在 Zone B内的第二频率资源上, 将下行数据承载在下行时间 单元中发送给用户设备, 相应的, 用户设备在 Zone B内的第二频率资源上, 接收基站承栽在下行时间单元中发送的下行数据;
后续, 用户设备可以将 Zone B内的第二频率资源切换为 Zone A内的第 一频率资源, 在 Zone A内的第一频率资源上将上行数据承栽在上行时间单元 中发送给基站, 也可以不进行频率切换直接使用该 Zone B内的第二频率资源 将上行数据承载在上行时间单元中发送给基站。
FDD系统中的基站和用户设备使用 Zone C, FDD上行频段和 FDD下行 频段内的频率资源进行数据传输的过程, 如图 5所示, 包括如下步骤:
5501、基站在与 TDD系统的下行时间单元相一致的时间段中,在 Zone C 内的频率资源上(为了便于区分, 称为第三频率资源)将下行数据发送给用 户设备, 相应的, 用户设备在 Zone C内的第三频率资源上, 接收基站发送的 下行数据;
5502、 用户设备将 Zone C内的第三频率资源切换为 FDD上行频段内的 频率资源 (为了便于区分, 称为第四频率资源);
5503、 用户设备在 FDD上行频段内的第四频率资源上将上行数据发送给 基站, 相应的, 基站在 FDD上行频段内的第四频率资源上, 接收用户设备发 送的上行数据;
后续, 基站可以将 FDD上行频段内的第四频率资源切换为 Zone C内的 第三频率资源,在与 TDD系统的下行时间单元相一致的时间段中,在 Zone C 内的第三频率资源上将下行数据发送给用户设备, 也可以将 FDD上行频段内 的第四频率资源切换为 FDD下行频段内对应的频率资源, 在 FDD下行频段 内的频率资源上将下行数据发送给用户设备。
实施例三
实施例三针对应用场景三, 在 FDD系统中使用 Zone A、 Zone C、 FDD 上行频段和 FDD下行频段, 其中 Zone A和 Zone C可以配对使用。 FDD系统 中的基站和用户设备使用 Zone A和 Zone C内的频率资源进行数据传输的过 程, 如图 6所示, 包括如下步骤:
5601、基站将 Zone A内的频率资源(为了便于区分,称为第一频率资源) 分配给用户设备并下发资源调度信息;
5602、 用户设备根据资源调度信息, 在与 TDD系统的上行时间单元相一 致的时间段中, 在 Zone A内的第一频率资源上将上行数据发送给基站, 相应 的, 基站在 Zone A内的第一频率资源上, 接收用户设备发送的上行数据; 5603、 基站将 Zone A内的第一频率资源切换为 Zone C内与第一频率资 源对应的频率资源 (为了便于区分, 称为第二频率资源);
5604、基站在与 TDD系统的下行时间单元相一致的时间段中,在 Zone C 内的第二频率资源上将下行数据发送给用户设备,相应的,用户设备在 Zone C 内的第二频率资源上, 接收基站发送的下行数据。
后续, 用户设备可以将 Zone C内的第二频率资源切换为 Zone A内的第 一频率资源, 在与 TDD系统的上行时间单元相一致的时间段中, 在 Zone A 内的第一频率资源上将上行数据发送给基站, 通过频率切换配对使用 Zone A 和 Zone C内对应的频率资源重复执行上述数据传输过程。 需要指出的是, 本 实施例中, Zone A和 FDD上行频段可以被联合调度, Zone C和 FDD下行频 段可以被联合调度, 用户设备可以同时在 Zone A和 FDD上行频段内的频率 资源上发送上行数据, 基站也可以同时在 FDD下行频段和 Zone C内的频率 资源上发送下行数据。
实施例四
实施例四针对应用场景四, 在 FDD系统中使用 Zone A、 FDD上行频段 和 FDD下行频段, 在 TDD系统中使用 Zone B和 Zone C。 FDD系统中的基 站和用户设备使用 Zone A、 FDD上行频段和 FDD下行频段内的频率资源进 行数据传输的过程, 如图 7所示, 包括如下步骤:
5701、基站将 Zone A内的频率资源(为了便于区分,称为第一频率资源) 分配给用户设备并下发资源调度信息;
5702、 用户设备根据资源调度信息, 在与 TDD系统的上行时间单元相一 致的时间段中, 在 Zone A内的第一频率资源上将上行数据发送给基站, 相应 的, 基站在 Zone A内的第一频率资源上, 接收用户设备发送的上行数据;
5703、 基站将 Zone A内的第一频率资源切换为 FDD下行频段内的频率 资源 (为了便于区分, 称为第二频率资源);
5704、 基站在 FDD下行频段内的第二频率资源上, 将下行数据发送给用 户设备, 相应的, 用户设备在 FDD下行频段内的第二频率资源上, 接收基站 发送的下行数据;
后续, 用户设备可以将 FDD下行频段内的第二频率资源切换为 Zone A 内的第一频率资源, 在与 TDD 系统的上行时间单元相一致的时间段中, 在 Zone A内的第一频率资源上将上行数据发送给基站,也可以将 FDD下行频段 内的第二频率资源切换为 FDD上行频段内对应的频率资源, 在 FDD上行频 段内的频率资源上将上行数据发送给基站。
TDD系统中的基站和用户设 ί吏用 Zone Β和 Zone C内的频率资源进行 数据传输的过程, 如图 8所示, 包括如下步骤:
5801、 基站在 Zone C内的频率资源上(为了便于区分, 称为第三频率资 源)将下行数据承载在下行时间单元中发送给用户设备, 相应的, 用户设备 在 Zone C内的第三频率资源上, 接收基站发送的下行数据;
5802、 用户设备将 Zone C内的第三频率资源切换为 Zone B内的频率资 源 (为了便于区分, 称为第四频率资源);
5803、 用户设备在 Zone B内的第四频率资源上将上行数据承栽在上行时 间单元中发送给基站, 相应的, 基站在 Zone B内的第四频率资源上, 接收用 户设备发送的上行数据;
后续, 基站可以将 Zone B内的第四频率资源切换为 Zone C内的第三频 率资源, 在 Zone C内的第三频率资源上将下行数据承栽在下行时间单元中发 送给用户设备,也可以不进行频率切换直接使用该 Zone B内的第四频率资源, 将下行数据承载在下行时间单元中发送给用户设备。
实施例五
实施例五针对应用场景五, Zone C单独用于系统广播, 例如利用 Zone C 向用户设备广播手机电视节目, 如图 9所示, 包括如下步骤:
5901、 基站在 Zone C内的频率资源上, 在与 TDD系统的下行时间单元 相一致的时间段中向至少一个用户设备发送下行数据;
5902、 各用户设备在 Zone C内的频率资源上, 在与 TDD系统的下行时 间单元相一致的时间段中接收基站^送的下行数据。 基于实施例一和实施例二, 本发明实施例提供了一种保护频带的使用方 法, 如图 10所示, 包括:
S1001、 TDD系统中的第一基站将上行保护频带内的第一频率资源分配给 第一用户设备并下发资源调度信息;
51002、 第一基站接收第一用户设备根据资源调度信息在第一频率资源上 承栽在上行时间单元中发送的上行数据;
51003、 第一基站在第二频率资源上将下行数据承载在下行时间单元中发 送给第一用户设备,第二频率资源包括下行保护频带的频率资源和 /或 TDD频 段内的频率资源。
一个实施例中, 第二频率资源为 TDD频段内的频率资源, 该方法还可以 包括如下步骤:
FDD 系统中的第二基站在与 TDD 系统的下行时间单元相一致的时间段 中, 在下行保护频带内的第三频率资源上将下行数据发送给第二用户设备; 第二用户设备将第三频率资源切换为 FDD上行频段内的第四频率资源, 并在第四频率资源上将上行数据发送给第二基站。
基于同一技术构思, 本发明实施例提供一种 TDD系统中的基站,如图 11 所示, 基站的一种可能结构, 包括:
资源调度单元 1101, 用于将上行保护频带内的第一频率资源分配给用户 设备并下发资源调度信息;
接收单元 1102, 用于接收用户设备根据资源调度信息在第一频率资源上 承载在上行时间单元中发送的上行数据;
发送单元 1103, 用于在第二频率资源上将下行数据承载在下行时间单元 中发送给用户设备,第二频率资源包括下行保护频带的频率资源和 /或 TDD频 段内的频率资源。
基于实施例一和实施例四, 本发明实施例提供了一种保护频带的使用方 法, 如图 12所示, 包括:
S 1201、 TDD系统的第一用户设备接收第一基站在下行保护频带内的第二 频率资源上承栽在下行时间单元中发送的下行数据;
S 1202、 第一用户设备在第一频率资源上将上行数据承栽在上行时间单元 中发送给第一基站, 第一频率资源包括上行保护频带内的频率资源和 /或 TDD 频段内的频率资源。
一个实施例中, 第一频率资源为 TDD频段内的频率资源, 该方法还可以 包括如下步骤:
FDD 系统中的第二用户设备在与 TDD 系统的上行时间单元相一致的时 间段中, 在上行保护频带内的第三频率资源上将上行数据发送给第二基站; 第二基站将第三频率资源切换为 FDD下行频段内的第四频率资源, 并在 第四频率资源上将下行数据发送给第二用户设备。
基于同一技术构思, 本发明实施例提供一种 TDD系统中的用户设备, 如 图 13所示, 用户设备的一种可能结构, 包括:
接收单元 1301, 用于在下行保护频带内的第二频率资源上接收基站承载 在下行时间单元中发送的下行数据;
发送单元 1302, 用于在第一频率资源上将上行数据承载在上行时间单元 中发送给基站,第一频率资源包括上行保护频带内的频率资源和 /或 TDD频段 内的频率资源。
基于实施例三和实施例四, 本发明实施例提供了一种保护频带的使用方 法, 如图 14所示, 包括:
S1401、 FDD系统中的第一基站将上行保护频带内的第一频率资源分配给 第一用户设备并下发资源调度信息;
51402、 第一基站在与 TDD系统的上行时间单元相一致的时间段中, 接 收第一用户设备根据资源调度信息在第一频率资源上发送的上行数据;
51403、 第一基站在第二频率资源上将下行数据发送给第一用户设备, 第 二频率资源包括下行保护频带内与第一频率资源对应的频率资源和 /或 FDD 下行频段内的频率资源。
其中, 在下行保护频带内与第一频率资源对应的频率资源上, 下行数据 在与 TDD系统的下行时间单元相一致的时间段中发送。
一个实施例中, 第二频率资源为 FDD下行频段内的频率资源, 该方法还 可以包括如下步骤:
TDD系统中的第二基站在下行保护频带内的第三频率资源上, 将下行数 据承载在下行时间单元中发送给第二用户设备;
第二用户设备将第三频率资源切换为 TDD频段内的第四频率资源, 并在 第四频率资源上将上行数据承栽在上行时间单元中发送给第二基站。
基于同一技术构思, 本发明实施例提供一种 FDD系统中的基站,如图 15 所示, 基站的一种可能结构, 包括:
资源调度单元 1501, 用于将上行保护频带内的第一频率资源分配给用户 设备并下发资源调度信息;
接收单元 1502, 用于在与 TDD系统的上行时间单元相一致的时间段中, 接收用户设备在上行保护频带内的第一频率资源上发送的上行数据;
发送单元 1503, 用于在第二频率资源上将下行数据发送给用户设备, 第 二频率资源包括下行保护频带内与第一频率资源对应的频率资源和 /或 FDD 下行频段内的频率资源。
基于实施例二和实施例三, 本发明实施例提供了一种保护频带的使用方 法, 如图 16所示, 包括:
51601、 FDD系统中的用户设备在与 TDD系统的下行时间单元相一致的 时间段中, 接收基站在下行保护频带内的第二频率资源上发送的下行数据;
51602、 用户设备在第一频率资源将上行数据发送给基站, 第一频率资源 包括上行保护频带内与第二频率资源对应的频率资源和 /或 FDD上行频段内 的频率资源。
其中, 在上行保护频带内与第二频率资源对应的频率资源上, 上行数据 在与 TDD系统的上行时间单元相一致的时间段中发送。
一个实施例中, 第一频率资源为 FDD上行频段内的频率资源, 该方法还 可以包括如下步骤: TDD系统中的第二用户设备在上行保护频带内的第三频率资源上, 将上 行数据承栽在上行时间单元中发送给第二基站;
第二基站将第三频率资源切换为 TDD频段内的第四频率资源, 并在第四 频率资源上将下行数据承载在下行时间单元中发送给第二用户设备。
基于同一技术构思, 本发明实施例提供一种 FDD系统中的用户设备, 如 图 17所示, 用户设备的一种可能结构, 包括:
接收单元 1701, 用于在与 TDD系统的下行时间单元相一致的时间段中, 接收基站在下行保护频带内的第二频率资源上发送的下行数据;
发送单元 1702, 用于在第一频率资源将上行数据发送给基站, 第一频率 资源包括上行保护频带内与第二频率资源对应的频率资源和 /或 FDD上行频 段内的频率资源。
本发明实施例提供的保护频带的使用方法, 在 TDD系统和 FDD系统共 存时, 上行保护频带或者下行保护频带可以分别分配给 TDD 系统或者 FDD 系统使用, 上、 下行保护频带也可以同时分配给 TDD系统或者 FDD系统使 用, 下行保护频带还可以独立用于系统广播, 在上行保护频带内的频率资源 上只进行上行数据的传输, 在下行保护频带内的频率资源上只进行下行数据 的传输,并且传输上行数据、下行数据的时间段与 TDD系统的上行时间单元、 下行时间单元相一致, 能够满足 TDD系统和 FDD系统共存时抑制邻频干扰 的要求, 同时有效利用了保护频带内的频率资源, 提升了移动通信频谮资源 利用率。
显然, 本领域的技术人员可以对本发明进行各种改动和变型而不脱离本 发明的精神和范围。 这样, 倘若本发明的这些修改和变型属于本发明权利要 求及其等同技术的范围之内, 则本发明也意图包含这些改动和变型在内。

Claims

权 利 要 求
1、 一种保护频带的使用方法, 其特征在于, 包括:
时分双工 TDD系统中的第一基站将上行保护频带内的第一频率资源分配 给第一用户设备并下发资源调度信息, 所述上行保护频带为频分双工 FDD上 行频段与 TDD频段之间的保护频带;
所述第一基站接收第一用户设备根据资源调度信息在所迷第一频率资源 上承载在上行时间单元中发送的上行数据;
所述第一基站在第二频率资源上将下行数据承载在下行时间单元中发送 给所述第一用户设备, 所述第二频率资源包括下行保护频带内的频率资源和 / 或 TDD频段内的频率资源,所述下行保护频带为 FDD下行频段与 TDD频段 之间的保护频带。
2、 如权利要求 1 所述的方法, 其特征在于, 所述第二频率资源为 TDD 频段内的频率资源; 所述方法还包括:
FDD 系统中的第二基站在与 TDD 系统的下行时间单元相一致的时间段 中, 在下行保护频带内的第三频率资源上将下行数据发送给第二用户设备; 所述第二用户设备将所述第三频率资源切换为 FDD上行频段内的第四频 率资源, 并在所述第四频率资源上将上行数据发送给所述第二基站。
3、 一种基站, 其特征在于, 包括:
资源调度单元, 用于将上行保护频带内的第一频率资源分配给用户设备 并下发资源调度信息, 所述上行保护频带为频分双工 FDD上行频段与时分双 工 TDD频段之间的保护频带;
接收单元, 用于接收用户设备根据资源调度信息在所述第一频率资源上 承载在上行时间单元中发送的上行数据;
发送单元, 用于在第二频率资源上将下行数据承载在下行时间单元中发 送给所述用户设备, 所述第二频率资源包括下行保护频带内的频率资源和 /或 TDD频段内的频率资源, 所述下行保护频带为 FDD下行频段与 TDD频段之 间的保护频带。
4、 一种保护频带的使用方法, 其特征在于, 包括:
时分双工 TDD系统的第一用户设备接收第一基站在下行保护频带内的第 二频率资源上承载在下行时间单元中发送的下行数据, 所述下行保护频带为 频分双工 FDD下行频段与 TDD频段之间的保护频带;
所述第一用户设备在第一频率资源上将上行数据承载在上行时间单元中 发送给所述第一基站, 所述第一频率资源包括上行保护频带内的频率资源和 / 或 TDD频段内的频率资源,所述上行保护频带为 FDD上行频段与 TDD频段 之间的保护频带,
5、 如权利要求 4所述的方法, 其特征在于, 所述第一频率资源为 TDD 频段内的频率资源; 所述方法还包括:
FDD 系统中的第二用户设备在与 TDD 系统的上行时间单元相一致的时 间段中, 在上行保护频带内的第三频率资源上将上行数据发送给第二基站; 所述第二基站将所述第三频率资源切换为 FDD下行频段内的第四频率资 源, 并在所述第四频率资源上将下行数据发送给所述第二用户设备。
6、 一种用户设备, 其特征在于, 包括:
接收单元, 用于在下行保护频带内的第二频率资源上接收基站承载在下 行时间单元中发送的下行数据, 所述下行保护频带为频分双工 FDD下行频段 与时分双工 TDD频段之间的保护频带;
发送单元, 用于在第一频率资源上将上行数据承栽在上行时间单元中发 送给所述基站, 所述第一频率资源包括上行保护频带内的频率资源和 /或 TDD 频段内的频率资源, 所述上行保护频带为 FDD上行频段与 TDD频段之间的 保护频带。
7、 一种保护频带的使用方法, 其特征在于, 包括:
频分双工 FDD系统中的第一基站将上行保护频带内的第一频率资源分配 给第一用户设备并下发资源调度信息, 所述上行保护频带为 FDD上行频段与 时分双工 TDD频段之间的保护频带: 所述第一基站在与 TDD系统的上行时间单元相一致的时间段中, 接收所 述第一用户设备根据资源调度信息在所述第一频率资源上发送的上行数据; 所述第一基站在第二频率资源上将下行数据发送给所述第一用户设备, 所述第二频率资源包括下行保护频带内与所述第一频率资源对应的频率资源 和 /或 FDD 下行频段内的频率资源, 所述下行保护频带为 FDD 下行频段与 TDD频段之间的保护频带。
8、 如权利要求 7所述的方法, 其特征在于, 还包括:
在下行保护频带内与所述第一频率资源对应的频率资源上, 所述下行数 据在与所述 TDD系统的下行时间单元相一致的时间段中发送。
9、 如权利要求 7所述的方法, 其特征在于, 所述第二频率资源为 FDD 下行频段内的频率资源; 所述方法还包括:
TDD系统中的第二基站在下行保护频带内的第三频率资源上, 将下行数 据承栽在下行时间单元中发送给第二用户设备;
所述第二用户设备将所述第三频率资源切换为 TDD频段内的第四频率资 源, 并在所述第四频率资源上将上行数据承载在上行时间单元中发送给所述 第二基站。
10、 一种基站, 其特征在于, 包括:
资源调度单元, 用于将上行保护频带内的第一频率资源分配给用户设备 并下发资源调度信息, 所述上行保护频带为频分双工 FDD上行频段与时分双 工 TDD频段之间的保护频带;
接收单元, 用于在与 TDD系统的上行时间单元相一致的时间段中, 接收 用户设备在所述第一频率资源上发送的上行数据;
发送单元, 用于在第二频率资源上将下行数据发送给所述用户设备, 所 述第二频率资源包括下行保护频带内与所述第一频率资源对应的频率资源和 / 或 FDD下行频段内的频率资源, 所述下行保护频带为 FDD下行频段与 TDD 频段之间的保护频带。
11、 一种保护频带的使用方法, 其特征在于, 包括: 频分双工 FDD系统中的第一用户设备在与时分双工 TDD系统的下行时 间单元相一致的时间段中, 接收第一基站在下行保护频带内的第二频率资源 上发送的下行数据, 所述下行保护频带为 FDD下行频段与 TDD频段之间的 保护频带;
所述第一用户设备在第一频率资源将上行数据发送给所述第一基站, 所 述第一频率资源包括上行保护频带内与所述第二频率资源对应的频率资源和 / 或 FDD上行频段内的频率资源, 所述上行保护频带为 FDD上行频段与 TDD 频段之间的保护频带。
12、 如权利要求 11所述的方法, 其特征在于, 还包括:
在上行保护频带内与所述第二频率资源对应的频率资源上, 所述上行数 据在与所述 TDD系统的上行时间单元相一致的时间段中发送。
13、 如权利要求 11所述的方法, 其特征在于, 所述第一频率资源为 FDD 上行频段内的频率资源; 所述方法还包括:
TDD系统中的第二用户设备在上行保护频带内的第三频率资源上, 将上 行数据承载在上行时间单元中发送给第二基站;
所述第二基站将所述第三频率资源切换为 TDD频段内的第四频率资源, 并在所述第四频率资源上将下行数据承载在下行时间单元中发送给所述第二 用户设备。
14、 一种用户设备, 其特征在于, 包括:
接收单元, 用于在与时分双工 TDD系统的下行时间单元相一致的时间段 中, 接收基站在下行保护频带内的第二频率资源上发送的下行数据, 所述下 行保护频带为频分双工 FDD下行频段与 TDD频段之间的保护频带;
发送单元, 用于在第一频率资源将上行数据发送给所述基站, 所述第一 频率资源包括上行保护频带内与所述第二频率资源对应的频率资源和 /或 FDD 上行频段内的频率资源, 所述上行保护频带为 FDD上行频段与 TDD频段之 间的保护频带。
15、 一种保护频带的使用方法, 其特征在于, 包括: 基站在下行保护频带内的频率资源上, 在与时分双工 TDD系统的下行时 间单元相一致的时间段中, 向至少一个用户设备发送下行数据, 所述下行保 护频带为频分双工 FDD下行频段与 TDD频段之间的保护频带;
各用户设备在所述下行保护频带内的频率资源上, 在与所述下行时间单 元相一致的时间段中, 接收所述基站发送的下行数据。
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