WO2010072178A1 - 载波聚合的多载波系统的发送和接收方法和数据传输装置 - Google Patents

载波聚合的多载波系统的发送和接收方法和数据传输装置 Download PDF

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Publication number
WO2010072178A1
WO2010072178A1 PCT/CN2009/076065 CN2009076065W WO2010072178A1 WO 2010072178 A1 WO2010072178 A1 WO 2010072178A1 CN 2009076065 W CN2009076065 W CN 2009076065W WO 2010072178 A1 WO2010072178 A1 WO 2010072178A1
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Prior art keywords
band
carrier
lte
terminal
aggregation
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English (en)
French (fr)
Inventor
潘学明
孙韶辉
索士强
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0064—Rate requirement of the data, e.g. scalable bandwidth, data priority
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0066—Requirements on out-of-channel emissions

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and a data transmission system and apparatus for transmitting and receiving a multi-carrier system for carrier aggregation. Background technique
  • LTE-Advanced Long-term evolution broadband mobile communication systems
  • IMT-Advanced In long-term evolution broadband mobile communication systems, such as LTE-Advanced or IMT-Advanced systems, it is necessary to provide higher peak rates through larger transmissions to meet the needs of users, but the expansion of transmission belts is subject to carrier-owned Frequency resource.
  • the carrier has limited frequency resources, in order to meet the bandwidth requirements of the LTE-A system, it is necessary to aggregate multiple consecutive or discontinuous LTE bands, and the maximum bandwidth of each band is consistent with the bandwidth of the current LTE system. That is 20MHz.
  • LTE-A system needs to maintain good backward compatibility with the existing Long Term Evolution (LTE) system and ensure that the LTE terminal can also access smoothly, each frequency band in the LTE-A system is compatible with the LTE terminal. Work, so its center frequency needs to be located at the currently defined channel barrier (Channel Raster) at 100 kHz intervals.
  • Channel Raster Channel barrier
  • the basic method of extending the transmission band is to aggregate multiple LTE frequency bands into LTE-A frequency bands while maintaining the existing LTE system parameters, such as subcarrier spacing and system bandwidth, while maintaining the new LTE-A system. Compatibility for LTE terminals.
  • LTE-A band Currently, when there are multiple consecutive LTE bands available, there are several ways to aggregate them into one LTE-A band:
  • FIG. 1 it is an aggregation diagram of the prior art method 1, which aggregates multiple consecutive LTE frequency bands to provide a larger transmission bandwidth of the LTE-A system, for example, three 20 MHz consecutive LTE frequency bands can be directly connected.
  • the basic parameters of each frequency band are consistent with the existing LTE system.
  • the method is simple to implement, and can ensure that each LTE frequency band center is on the channel gate, so that it can be seen to the LTE terminal, that is, the LTE terminal can work in each frequency band.
  • this method reserves twice the frequency guard band between each frequency band (this guard band is used in the LTE system to suppress interference between adjacent frequency systems), so the waste of frequency resources is more serious.
  • the method directly connects the effective bandwidths of the three LTE frequency bands, wherein the RF bandwidth of each LTE frequency band is 20 MHz, and the effective transmission band of the physical layer is 18.015 MHz. And 2.9775MHz is reserved as a guard band on both sides of the aggregated frequency band, and the LTE-A system can use continuous aggregate bandwidth.
  • the center frequency of the 18.015MHz bandwidth is located on the channel gate at intervals of 100kHz, so that the LTE terminal can search for the synchronization signal of the LTE system on the channel gate, so as to correctly access the communication.
  • the LTE terminal cannot search for the band, resulting in the two bands having no backward compatibility for LTE.
  • this method can keep the physical resources that the LTE-A system can use continuously, there are two frequency bands that are invisible to the LTE terminal and affect backward compatibility.
  • no guard band is set between the component carriers, the signal transmitted/received by the terminal operating at a certain component carrier interferes with the signal transmission and reception on other carriers in the adjacent frequency band, and the cause of the interference is detailed below.
  • FIG. 3 it is an aggregation diagram of the method 3 of the prior art.
  • the method directly connects the effective bandwidths of the three LTE frequency bands, wherein the RF bandwidth of each LTE frequency band is 20 MHz, and the effective transmission band of the physical layer is 18.015 MHz.
  • a certain number of guard subcarriers are inserted between two adjacent active frequency bands (the number of inserted subcarriers is 19 as shown in the figure), so that all the frequency center centers are located on the channel gate.
  • This method allows the center frequency of all frequency bands to be on the channel gate, so that it is visible to the LTE terminal, and the guard band between each frequency band is small.
  • the disadvantages are: Since the guard band between the frequency bands is too small, the signals transmitted/received by the LTE terminal operating in a certain frequency band cause interference to other LTE terminals in the adjacent frequency band, and when one user transmits and receives on two consecutive component carriers In the case of data, the interference between the component carriers does not exist. However, some subcarriers must be reserved as a guard band at this time, which makes the resources discontinuous and reduces the spectrum utilization to a certain extent. Summary of the invention
  • the object of the present invention is to solve at least one of the above technical drawbacks, and in particular to solve the technical drawback that the prior art does not provide a sufficient frequency protection band and the frequency resource waste is relatively serious. And the present invention also solves the terminal of the carrier aggregation multi-carrier system in the prior art (such as LTE-A) Terminal) A defect in interference to LTE terminals.
  • the terminal of the carrier aggregation multi-carrier system in the prior art such as LTE-A) Terminal
  • the present invention provides a method for transmitting and receiving a multi-carrier system for carrier aggregation, which includes the following steps:
  • the base station transmits or receives data through a carrier aggregation multi-carrier system aggregation frequency band, where carrier aggregation
  • the multi-carrier system aggregation band is formed by at least two physical layer effective transmission bands of the long-term evolution LTE band, and a first guard band is inserted between the physical layer effective transmission bands of two adjacent LTE bands to enable the LTE band physical layer.
  • the center of the effective transmission band is on the channel gate, wherein the first protection band is unavailable to the LTE terminal, and is available to the terminal of the carrier aggregation multi-carrier system, and the base station only has LTE frequency band physics on both sides of the first protection band within a predetermined time period.
  • the terminal working on the layer effective transmission band is a carrier aggregation multi-carrier system terminal
  • the first protection band resource is scheduled for the carrier aggregation multi-carrier system terminal; the terminal is on the carrier aggregation multi-carrier system aggregation frequency band according to its own capability. Receive or send data.
  • the present invention further provides a method for transmitting and receiving a multi-carrier system for carrier aggregation, wherein the method includes: the terminal transmitting or receiving data on a multi-carrier system aggregation frequency band of a carrier aggregation scheduled by a base station, where
  • the multi-carrier system aggregation band of the carrier aggregation includes a physical layer effective transmission band of at least two long-term evolution LTE bands, and a first protection band is inserted between physical layer effective transmission bands of two adjacent LTE bands,
  • the first protection band is unavailable to the LTE terminal, and is available to the terminal of the carrier aggregation multi-carrier system, and the base station is in the LTE frequency band physical layer effective transmission band on both sides of the first protection band within a predetermined time period.
  • the working terminals are all carrier-aggregated multi-carrier system terminals, the resources of the first guard band are scheduled for the carrier-aggregated multi-carrier system terminal.
  • a first guard band is inserted between the effective transmission bands of the physical layers of the two LTE bands so that the center of the LTE band physical layer effective transmission band is on the channel gate, and the first guard band is unavailable to the LTE terminal, for long-term evolution carrier aggregation
  • the terminal of the multi-carrier system is available, and the first data transmission device base station only works on the effective transmission band of the physical layer of the LTE frequency band on both sides of the first protection band within a predetermined time period.
  • the carrier of the first guard band is scheduled for the carrier-aggregated multi-carrier system terminal;
  • the second data transmission device is located at the terminal-side terminal, and is used for aggregation in the carrier aggregation multi-carrier system according to its own capability. Receive or transmit data on the band.
  • the present invention also provides a data transmission apparatus, which is located at the base station side, and includes a terminal capability acquisition module, a frequency band aggregation module, a data transmission and reception module, and a scheduling module, and a terminal capability acquisition module, which is configured to receive capability information reported by the terminal; a module, configured to aggregate a physical layer effective transmission band of at least two LTE frequency bands into a multi-carrier system aggregation frequency band of carrier aggregation, and insert a first protection band between physical transmission bands of two adjacent LTE frequency bands, first The protection band is unavailable to the LTE terminal, and is available to the terminal of the carrier aggregation multi-carrier system; the data sending and receiving module is configured to send or receive data through the carrier aggregation multi-carrier system aggregation frequency band aggregated by the band aggregation module; When the terminals working on the LTE band physical layer effective transmission band on both sides of the first guard band are all carrier-aggregated multi-carrier system terminals in a predetermined time period, the
  • the present invention also provides a data transmission device, which is located at the terminal side, and includes a capability reporting module and a data receiving and transmitting module, a capability reporting module, configured to report the capability information to the base station, and a data receiving and transmitting module, configured to report the module according to the capability
  • the reported capability information is received or transmitted on the multi-carrier system aggregation frequency band of the long-term evolution multi-carrier system carrier aggregation. If the terminal is an LTE terminal, the first protection band and the second protection band and the edge bandwidth are unavailable to the LTE terminal.
  • the LTE terminal obtains the transmitted data from other parts of the multi-carrier system aggregation frequency band of the long-term evolution multi-carrier system carrier aggregation; if the terminal is a multi-carrier system terminal of the long-term evolution multi-carrier system carrier aggregation, only the second protection band has long-term evolution
  • the multi-carrier system terminal of the carrier system carrier aggregation is not available, and the carrier-aggregated multi-carrier system terminal acquires the transmitted data from the first guard band, the edge bandwidth, and other parts of the carrier-aggregated multi-carrier system aggregation band according to the scheduling of the base station.
  • the present invention can make full use of frequency resources as much as possible while ensuring backward compatibility and providing a sufficient frequency guard band, and the present invention can also effectively suppress terminals of carrier aggregation multi-carrier systems (such as LTE-A terminals).
  • carrier aggregation multi-carrier systems such as LTE-A terminals.
  • 4A and 4B are respectively schematic diagrams of interference caused by transmitting and receiving to adjacent carriers in only one carrier working terminal in the prior art
  • FIG. 5 is a schematic diagram of uplink data transmission and reception of a multi-carrier system in the prior art
  • FIG. 6 is a schematic diagram of polymerization according to an embodiment of the present invention.
  • FIG. 7 is a flowchart of a method of transmitting and receiving a multi-carrier system for carrier aggregation according to an embodiment of the present invention
  • FIG. 8 is a structural diagram of a transmission and reception system of a multi-carrier system for carrier aggregation according to an embodiment of the present invention. detailed description
  • FIG. 4A and 4B are respectively schematic diagrams of interference caused by transmitting and receiving to adjacent carriers in only one carrier working terminal in the prior art, wherein FIG. 4A uses the aggregation method of the above method 2, and FIG. 4B uses the above method.
  • the third way of aggregation may be an LTE R8 terminal or a lower capability LTE-A terminal, or an LTE-A terminal with a smaller amount of received/transmitted data, and the RF thereof (RF)
  • the transmit/receive filter response is non-ideal, so for this terminal transmission (eg only in the middle of the component carrier), the non-ideal signal transmitted in the shaded area will be used for data transmission in the adjacent carrier.
  • the effective subcarriers cause interference; for terminal reception (for example, only in the middle of the component carrier), the distorted signal of the subcarrier signal for data transmission in the adjacent component carrier will be received in the shaded area, due to this part of the signal power It may be higher, which will cause greater interference to the data receiving process of the terminal.
  • the interference between the component carriers is serious.
  • the reserved interval between consecutive component carriers is small, and the interference is not enough to eliminate the interference. The negative impact.
  • interference between individual carriers may also be caused by non-ideal synchronization between different terminals transmitting signals using different carriers.
  • FIG. 5 it is a schematic diagram of uplink data transmission and reception of a multi-carrier system in the prior art (taking two terminals as an example). It can be seen from the figure that the terminal 1 and the terminal 2 independently perform DFT on the uplink data.
  • the base station receiver can use a large FFT transform to process the signals on all carriers.
  • IFFT Inverse Fast Fourier Transform
  • FIG. 6 is a schematic diagram of polymerization according to an embodiment of the present invention.
  • the present invention can directly connect the effective bandwidths of n (three in the illustrated embodiment of the present invention) LTE frequency band, wherein the RF bandwidth of each LTE frequency band is 20 MHz, and the physical layer effective transmission band is 18.015 MHz, and Inserting a first guard band between every two adjacent effective frequency bands, the first guard band being set to meet a minimum setting of an LTE terminal receiving and transmitting frequency guard band, but at least a frequency protection band size of an existing LTE specification Therefore, there is no interference between LTE terminals between different frequency bands.
  • n three in the illustrated embodiment of the present invention
  • the inserted first protection band can also make each frequency band center on the channel gate, so as to be visible to the LTE terminal, ensuring backward compatibility of the long term evolution system.
  • the first guard band is also a carrier-aggregated multi-carrier system (such as
  • the LTE-A system may also be a multi-carrier system in which other carriers are aggregated.
  • the following embodiments also use an LTE-A terminal as an example to describe an available frequency band, which can increase the physical resources available for the carrier aggregation multi-carrier system, and In the embodiment of the present invention, if the number of the aggregated frequency bands is larger, the physical resources added to the carrier-aggregated multi-carrier system are also increased.
  • the LTE-A system adds physical resources to 20 PRBs (physical resource blocks). If more frequency bands are aggregated, for example, aggregation of dozens of frequency bands, LTE- The A system adds more physical resources.
  • the first guard band is preferably 65.7 subcarriers.
  • N consecutive LTE frequency bands (the bandwidth of the LTE frequency band is 1.4 MHz, the physical layer effective transmission band is 6 PRB; or the LTE frequency band bandwidth is 3 MHz, and the physical layer effective transmission band is 15PRB; or LTE band bandwidth is 5MHz, physical layer effective transmission band is 25PRB; or LTE band bandwidth is 10MHz, physical layer effective transmission band is 50PRB; or LTE band bandwidth is 15MHz, physical layer effective transmission band is 75PRB; Or the bandwidth of the LTE band is 20 MHz, and the physical layer effective transmission band is a combination of one or more of 100 PRBs).
  • the bandwidth of the at least one LTE frequency band is different from the bandwidth of the other LTE frequency bands that are aggregated, and the bandwidth of all the LTE frequency bands may be the same.
  • the bandwidth of the LTE frequency band is not limited to a single bandwidth, for example, a bandwidth of 20 MHz may be used. Aggregate with 10MHz bandwidth.
  • the present invention is applicable not only to LTE-A and LTE systems, but also to other long-term evolutionary broadband mobile communication systems that support larger transmission bands by continuous frequency band aggregation.
  • a guard band, a second guard band, and an edge bandwidth common to the LTE and LTE-A systems are also provided.
  • the second guard band is disposed on both sides of the total frequency band after the aggregation as a frequency guard band, which can be minimized, for example, can be set according to at least the frequency protection band of the existing LTE specifications.
  • the physical resources included in the second guard band are unavailable for the LTE and LTE-A systems, and the edge bandwidth is the bandwidth between the outer bandwidth of the effective bandwidth and the second guard band on both sides of the total frequency band after the aggregation.
  • the outer carrier refers to an effective transmission band of the physical layer of the LTE frequency band on both sides of the total frequency band after the aggregation.
  • the most The left and right LTE bands physical layer effective transmission bands are called outer carriers.
  • the second guard band (1.0925 MHz) is smaller than the guard band (2.6925 MHz) in the prior art method three, so that the present invention can effectively reduce the waste of physical resources.
  • the terminal working on the LTE band physical layer effective transmission band on both sides of the first protection band only for a predetermined time period is LTE.
  • the base station schedules the resources in the first guard band for the LTE-A terminal, and the base station only schedules the LTE-A terminal when the terminals operating on the outer carrier are all LTE-A terminals within a predetermined time period.
  • the resource of the edge bandwidth adjacent to the outer carrier, otherwise no signal is transmitted on the first guard band or edge bandwidth.
  • a flowchart of a data transmission and reception method for a carrier aggregation multi-carrier system includes the following steps:
  • Step S701 The base station transmits or receives data through a carrier aggregation multi-carrier system aggregation frequency band
  • the carrier aggregation multi-carrier system aggregation frequency band includes at least two physical layer effective transmission bands of the LTE frequency band, and is effectively transmitted by at least two physical layers of the LTE frequency band.
  • Band aggregation is formed, a first guard band is inserted between physical layer effective transmission bands of two adjacent LTE bands to make the center of the LTE band physical layer effective transmission band on the channel gate, and the first guard band is not available to the LTE terminal Used, the terminal of the carrier aggregation multi-carrier system is available.
  • the carrier aggregation multi-carrier system may be an LTE-A system.
  • the second guard band and the edge bandwidth are also disposed on both sides of the aggregation band, and the second guard band is unavailable to the LTE terminal and the LTE-A system terminal, and the edge bandwidth is unavailable to the LTE terminal, but to the LTE-A terminal.
  • the physical layer effective transmission band of each two adjacent LTE frequency bands shares one first protection band, and the first protection band and the second protection band are minimized according to existing LTE specifications.
  • only the terminal working on the physical layer effective transmission band of the LTE frequency band on both sides of the first protection band in the aggregated frequency band is LTE in a predetermined period of time (such as one or several subframes).
  • the base station schedules resources in the first guard band to the LTE-A terminal, and only on the outer carrier within a predetermined time period When the working terminals are all LTE-A terminals, the base station allocates resources of the edge bandwidth adjacent to the outer carrier for the LTE-A terminal.
  • Step S702 The terminal receives or sends data on a carrier aggregation multi-carrier system aggregation frequency band according to its own capability. Further, if the terminal is an LTE terminal, the first guard band and the second guard band and the edge bandwidth are unavailable to the LTE terminal, and the LTE terminal acquires the transmitted data from other parts of the carrier aggregation multi-carrier system aggregation band; For the LTE-A terminal, only the second guard band is unavailable to the LTE-A terminal, and the LTE-A terminal acquires or transmits from the first guard band, the edge bandwidth, and other parts of the multi-carrier system aggregation band of the carrier aggregation according to the scheduling of the base station. The data transferred.
  • FIG. 8 it is a structural diagram of a data transmission system for a carrier aggregation multi-carrier system according to an embodiment of the present invention, where the system includes a first data transmission device 100 and at least one second served by the first data transmission device 100.
  • the data transmission device 200 in this embodiment, the carrier-aggregated multi-carrier system may be an LTE-A system.
  • the first data transmission device 100 is located at the base station side, and is configured to send or receive data through an LTE-A system aggregation frequency band.
  • the LTE-A system aggregation frequency band is formed by at least two physical layer effective transmission bands of the LTE frequency band, and adjacent to the two A first guard band is inserted between the effective transmission bands of the LTE band physical layer to make the center of the LTE band physical layer effective transmission band on the channel gate, and the first protection band is not available to the LTE terminal, and the terminal for the LTE-A system
  • the second data transmission device 200 is located on the terminal side, and is configured to receive or transmit data on the LTE-A system aggregation frequency band according to its own capabilities.
  • a second guard band and an edge bandwidth are further disposed on both sides of the LTE-A system aggregation band, where the second guard band is unavailable to the LTE terminal and the LTE-A terminal, and the physical layer of each two adjacent LTE bands is The effective transmission band shares a first protection band, only when working in a physical layer effective transmission band of the LTE frequency band on both sides of the first protection band in the aggregation band within a predetermined period of time (such as one or several subframes)
  • the terminals are terminals of a carrier aggregation multi-carrier system
  • the first data transmission device schedules resources of the first guard band to the LTE-A terminal, and the terminals working on the outer carrier only for a predetermined time period are all LTE-A
  • the first data transmission device only allocates resources of the edge bandwidth adjacent to the outer carrier for the LTE-A terminal, thereby suppressing interference of the LTE-A terminal to the LTE terminal.
  • the first guard band and the second guard band can be minimized according to existing LTE
  • the first data transmission device 100 includes a band aggregation module 110, and data transmission and connection.
  • the receiving module 120 and the scheduling module 130 and the terminal capability acquiring module 140 are included.
  • the band aggregation module 110 is configured to aggregate physical layer effective transmission bands of at least two LTE frequency bands into an LTE-A system aggregation frequency band, and insert a first protection band between two adjacent LTE frequency bands physical layer effective transmission bands to enable LTE.
  • the center of the effective band of the band physical layer is on the channel gate, and the second guard band and the edge bandwidth are set on both sides of the aggregation band, and the second guard band is unavailable to both the LTE terminal and the LTE-A terminal; the data sending module 120 is used.
  • the LTE-A system aggregated band aggregated by the band aggregation module 110 transmits or receives data.
  • the scheduling module 130 is configured to schedule the resources of the first guard band to the carrier when the terminals working on the LTE band physical layer effective transmission band on both sides of the first protection band are all carrier aggregation multi-carrier system terminals only within a predetermined time period.
  • the aggregated multi-carrier system terminal, and the terminal operating on the outer carrier only within a predetermined time period are all LTE-A terminals, and the first data transmission device is the resource for the LTE-A terminal to schedule the edge bandwidth adjacent to the outer carrier.
  • the terminal capability acquiring module 140 is configured to receive capability information reported by the terminal.
  • the second data transmission device 200 includes a capability reporting module 210 and a data receiving and transmitting module 220, and the capability reporting module 210 is configured to report its capabilities to the base station.
  • the data receiving and transmitting module 220 is configured to receive or send data on the LTE-A system aggregation frequency band scheduled by the first data transmission device (located on the base station side) according to the capability information reported by the capability reporting module 210, if the second data transmission device 200 is located.
  • the first guard band, the second guard band, and the edge bandwidth are unavailable to the LTE terminal, and the LTE terminal acquires the transmitted data from other parts of the LTE-A system aggregation band; if the second data transmission device 200 is located in the LTE On the -A terminal side, only the second guard band is unavailable to the terminal of the LTE-A system, and the LTE-A terminal acquires or transmits the transmitted data from the first guard band, the edge bandwidth, and other parts of the LTE-A system aggregation band.
  • the present invention can make full use of frequency resources as much as possible while ensuring backward compatibility and providing a sufficient frequency guard band, and the present invention can also effectively suppress a terminal of a carrier aggregation multi-carrier system (such as an LTE-A terminal, It can also be a terminal of a multi-carrier system of other carrier aggregation).
  • a carrier aggregation multi-carrier system such as an LTE-A terminal, It can also be a terminal of a multi-carrier system of other carrier aggregation.

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Description

载波聚合的多载波系统的发送和接收方法和数据传输装置 技术领域
本发明涉及通信技术领域， 特别涉及一种用于载波聚合的多载波系统 的发送和接收方法、 数据传输系统及装置。 背景技术
在长期演进宽带移动通信系 统中 ， 例如 LTE-Advanced 或 IMT-Advanced系统， 需要通过更大的传输带来提供更高的峰值速率， 满足 用户的需求， 但传输带的扩大受制于运营商拥有的频率资源。 由于运营商 拥有的频率资源有限， 因此为了满足 LTE-A系统的带宽需求， 需要通过将 多个连续或不连续的 LTE频段聚合， 则每个频段最大带宽为与当前的 LTE 系统的带宽一致， 即 20MHz。 另外， 由于 LTE-A系统还需要与现有的长期 演进 LTE系统保持良好的后向兼容性，保证 LTE终端也能够顺利接入， 因 此在 LTE-A系统中的每一个频段都要兼容 LTE终端工作，因此其中心频点 需要位于在当前定义的以 100kHz为间隔的信道栅（ Channel Raster ) 上。
扩展传输带的基本方法是：在保持现有 LTE系统参数，如子载波间隔， 系统带宽等不变的基础上，将多个 LTE频段聚合成 LTE-A频段， 同时保持 新的 LTE-A系统对于 LTE终端的兼容性。 目前当存在多个可用的连续的 LTE频段时， 将它们聚合成一个 LTE-A频段的方法有以下几种：
方法一
如图 1 所示， 为现有技术方法一的聚合示意图， 该方法将多个连续的 LTE频段进行聚合提供 LTE-A系统更大传带宽， 如可将三个 20MHz的连 续的 LTE频段直接连接，每个频段的基本参数都与现有 LTE系统保持一致。 该方法实现较为简单， 且能够保证每个 LTE频段中心都在信道栅上， 从而 对 LTE终端可见， 即 LTE终端可在每一个频段内工作。但是该方法在每个 频段之间都预留了两倍的频率保护带（该保护带在 LTE系统中用于抑制邻 频系统间的干扰） ， 因此对频率资源的浪费较为严重。 方法二
如图 2所示， 为现有技术方法二的聚合示意图， 该方法将 3个 LTE频 段的有效带宽直接连接起来， 其中每个 LTE频段的射频带宽为 20MHz, 物 理层有效传输带为 18.015MHz , 并且在聚合后的频段两侧各保留 2.9775MHz作为保护带， 则 LTE-A系统可以使用连续的聚合带宽。 同时， 中间的 18.015MHz带宽的中心频点位于以 100kHz为间隔的信道栅上， 使 得 LTE终端可以在信道栅上搜索到 LTE系统的同步信号 ,从而正确接入进 行通信。 但是左右两侧的 18.015MHz频段由于中心频点与信道栅不对齐， 因此 LTE终端无法搜索到该频段，导致这两个频段对于 LTE不具有后向的 兼容性。 这种方法虽然能够保持 LTE-A系统能使用的物理资源连续， 但是 有两个频段对 LTE终端不可见， 影响后向兼容性。 并且由于成员载波之间 没有设置保护带， 在某一成员载波工作的终端发射 /接收的信号对相邻频段 的其他载波上的信号收发造成干扰， 具体造成干扰的原因以下会详述。
方法三
如图 3所示， 为现有技术方法三的聚合示意图， 该方法将 3个 LTE频 段的有效带宽直接连接起来， 其中每个 LTE频段的射频带宽为 20MHz, 物 理层有效传输带为 18.015MHz, 并在相邻的两个有效频段之间插入一定数 量的保护子载波（如图中所示插入的子载波数为 19 ) , 使得所有的频段中 心都位于信道栅上。 这种方法可以使所有频段的中心频点都在信道栅上， 从而对 LTE终端可见， 并且各个频段之间的保护带较小。 其缺点在于： 由 于频段之间的保护带过小，在某一频段工作的 LTE终端发射 /接收的信号对 相邻频段的其他 LTE终端造成干扰， 另外当一个用户在连续两个成员载波 上收发数据时， 成员载波之间的干扰并不存在， 但此时还必须预留一些子 载波作为保护带， 使得资源不连续， 同时一定程度降低了频谱利用率。 发明内容
本发明的目的旨在至少解决上述技术缺陷之一， 特别是解决现有技术 中没有提供足够的频率保护带， 以及频率资源浪费比较严重的技术缺陷。 并且本发明还解决了现有技术中载波聚合的多载波系统的终端 （如 LTE-A 终端）对 LTE终端干扰的缺陷。
为达到上述目的， 本发明一方面提出一种用于载波聚合的多载波系统 的发送和接收方法， 包括以下步骤： 基站通过载波聚合的多载波系统聚合 频段发送或接收数据， 其中， 载波聚合的多载波系统聚合频段至少由两个 长期演进 LTE频段的物理层有效传输带聚合形成，且在相邻两个 LTE频段 的物理层有效传输带之间插入有第一保护带以使 LTE频段物理层有效传输 带的中心在信道栅上， 其中， 第一保护带对 LTE终端不可用， 对载波聚合 的多载波系统的终端可用， 基站仅在预定时间段内在第一保护带两侧的 LTE频段物理层有效传输带上工作的终端均为载波聚合的多载波系统终端 时， 才为载波聚合的多载波系统终端调度第一保护带的资源； 终端根据自 身能力在载波聚合的多载波系统聚合频段上接收或发送数据。
本发明还提出一种用于载波聚合的多载波系统的发送和接收方法， 其 特征在于， 所述方法包括： 终端在基站调度的载波聚合的多载波系统聚合 频段上发送或接收数据， 其中， 所述载波聚合的多载波系统聚合频段包括 至少两个长期演进 LTE频段的物理层有效传输带， 且在相邻两个所述 LTE 频段的物理层有效传输带之间插入有第一保护带， 所述第一保护带对 LTE 终端不可用， 而对所述载波聚合的多载波系统的终端可用， 所述基站在预 定时间段内在所述第一保护带两侧的 LTE频段物理层有效传输带上工作的 终端均为载波聚合的多载波系统终端时， 为所述载波聚合的多载波系统终 端调度所述第一保护带的资源。
本发明还提出一种用于载波聚合的多载波系统的数据传输系统， 包括 第一数据传输装置基站和基站第一数据传输装置所服务的至少一个终端第 二数据传输装置， 基站， 第一数据传输装置位于基站侧， 用于通过载波聚 合的多载波系统聚合频段发送或接收数据， 其中， 载波聚合的多载波系统 聚合频段至少由两个 LTE频段的物理层有效传输带聚合形成， 在相邻两个 LTE频段物理层有效传输带之间插入有第一保护带以使 LTE频段物理层有 效传输带的中心在信道栅上， 且第一保护带对 LTE终端不可用， 对长期演 进载波聚合的多载波系统的终端可用， 第一数据传输装置基站仅在预定时 间段内在第一保护带两侧的 LTE频段物理层有效传输带上工作的终端均为 载波聚合的多载波系统终端时， 才为载波聚合的多载波系统终端调度第一 保护带的资源； 第二数据传输装置， 位于终端侧终端， 用于根据自身能力 在载波聚合的多载波系统聚合频段上接收或发送数据。
本发明还提出一种数据传输装置， 位于基站侧， 包括终端能力获取模 块、 频段聚合模块、 数据发送和接收模块、 和调度模块， 终端能力获取模 块， 用于接收终端上报的能力信息； 频段聚合模块， 用于将至少两个 LTE 频段的物理层有效传输带聚合为载波聚合的多载波系统聚合频段， 在相邻 两个 LTE 频段物理层有效传输带之间插入有第一保护带， 第一保护带对 LTE终端不可用， 而对载波聚合的多载波系统的终端可用； 数据发送和接 收模块， 用于通过频段聚合模块聚合的载波聚合的多载波系统聚合频段发 送或接收数据； 调度模块， 用于在预定时间段内在第一保护带两侧的 LTE 频段物理层有效传输带上工作的终端均为载波聚合的多载波系统终端时， 将第一保护带的资源调度给载波聚合的多载波系统终端。
本发明还提出一种数据传输装置， 位于终端侧， 包括能力上报模块和 数据接收和发送模块， 能力上报模块， 用于向基站上报自身能力信息； 数 据接收和发送模块， 用于根据能力上报模块上报的能力信息在长期演进多 载波系统载波聚合的多载波系统聚合频段上接收或发送数据， 如果终端为 LTE终端 ,则第一保护带和第二保护带以及边缘带宽对 LTE终端均不可用， LTE终端从长期演进多载波系统载波聚合的多载波系统聚合频段的其他部 分获取传输的数据； 如果终端为长期演进多载波系统载波聚合的多载波系 统终端， 则仅第二保护带对长期演进多载波系统载波聚合的多载波系统终 端不可用， 载波聚合的多载波系统终端按照基站的调度从第一保护带、 边 缘带宽和载波聚合的多载波系统聚合频段的其他部分或发送获取传输的数 据。
本发明在可以在保证后向兼容性以及提供足够频率保护带的基础上， 尽可能的充分利用频率资源， 并且本发明还可有效抑制载波聚合的多载波 系统的终端 （如 LTE-A终端 )对 LTE终端的干 ·ί尤。
本发明附加的方面和优点将在下面的描述中部分给出， 部分将从下面 的描述中变得明显， 或通过本发明的实践了解到。 附图说明
本发明上述的和 /或附加的方面和优点从下面结合附图对实施例的描 述中将变得明显和容易理解， 其中：
图 1为现有技术方法一的聚合示意图；
图 2为现有技术方法二的聚合示意图；
图 3为现有技术方法三的聚合示意图；
图 4A和 4B分别为现有技术中对于仅在一个载波工作终端的收发对相 邻载波造成的干扰示意图；
图 5为现有技术多载波系统上行数据收发示意图；
图 6为根据本发明实施例的聚合示意图；
图 7为根据本发明实施例的用于载波聚合的多载波系统的发送和接收 方法的流程图；
图 8为根据本发明实施例的用于载波聚合的多载波系统的发送和接收 系统结构图。 具体实施方式
下面详细描述本发明的实施例， 实施例的示例在附图中示出， 其中自 始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的 元件。 下面通过参考附图描述的实施例是示例性的， 仅用于解释本发明， 而不能解释为对本发明的限制。
之前描述的方法二和方法三中提到的连续成员载波之间的干扰主要是 由以下两个原因造成的。
第一、 由于射频收 /发滤波器响应以及非理想性造成的成员载波之间的 干扰。
如图 4A和 4B所示， 分别为现有技术中对于仅在一个载波工作终端的 收发对相邻载波造成的干扰示意图， 其中图 4A 釆用上述方法二的聚合方 式， 图 4B釆用上述方法三的聚合方式。 其中， 上述终端可为 LTE R8 终端 或者能力较低的 LTE-A终端， 或者收 /发数据量较小的 LTE-A终端， 其 RF (射频） 收 /发滤波器响应非理想， 因此对于该终端发射来说（例如仅在中 间的成员载波） ， 在阴影区域的发射的非理想信号会对相邻载波内的用于 数据传输的有效子载波造成干扰； 对于终端接收来说（例如仅在中间的成 员载波） ， 在阴影区域将会接收到相邻成员载波中用于数据传输的子载波 信号的畸变信号， 由于这部分信号功率可能较高， 将导致对该终端的数据 接收处理造成较大的干扰。
对于载波聚合釆用方法二时， 这种成员载波之间的干扰较为严重； 对 于载波聚合釆用方法三时， 由于连续成员载波之间预留的保护间隔较小， 也不足以消除这种干扰带来的不良影响。
第二、 对于上行链路， 各个载波之间的干扰还可能由使用不同载波发 送信号的不同终端之间的非理想同步造成。
如图 5所示， 为现有技术多载波系统上行数据收发示意图 （以两个终 端为例）。从图中可以看出由于终端 1和终端 2独立的对上行数据进行 DFT
(离散傅里叶变换）预处理以及 IFFT (快速傅里叶逆变换） 变换， 基站接 收机则可以釆用一个大的 FFT变换对所有载波上的信号进行处理。 对于终 端 1和终端 2 , 两者上行时间、 频率的非理想同步将造成经过 DFT-OFDM
( Orthogonal Frequency Division Multiplexing, 正交频分复用 )调制后两个 终端的子载波之间非理想正交。 在射频滤波器非理想区域 （即上图所示的 阴影区域） ， 这样的子载波之间非理想正交会使得相邻成员载波之间的干 扰更加严重。
为了解决以上问题， 以下提供了多个实施例用于解释本发明。
如图 6所示， 为本发明实施例的聚合示意图。 本发明可将 n个 （本发 明实施例的图示中为 3个） LTE频段的有效带宽直接连接起来， 其中每个 LTE频段的射频带宽为 20MHz, 物理层有效传输带为 18.015MHz, 并在每 两个相邻的有效频段之间插入第一保护带， 该第一保护带的设置为满足 LTE终端接收与发射频率保护带的最小化设置， 但至少为现有 LTE规范的 频率保护带大小， 从而能够使得不同频段之间的 LTE终端之间没有干扰。 并且插入的第一保护带还能够使得每个频段中心都在信道栅上， 从而对 LTE终端可见， 保证长期演进系统的后向兼容性。 并且在本发明实施例中， 第一保护带也为载波聚合的多载波系统 （如
LTE-A系统 ,也可以为其他载波聚合的多载波系统，以下实施例也以 LTE-A 终端为例进行描述） 可用频段， 这样能够增加载波聚合的多载波系统可用 的物理资源， 并且对于本发明实施例来说， 如果聚合频段的个数越多， 则 为该载波聚合的多载波系统增加的物理资源也越多。 以图示的实施例为例， 本发明实施例为 LTE-A系统增加物理资源为 20个 PRB (物理资源块 ) , 如果聚合的频段更多， 例如几十个频段的聚合， 则为 LTE-A系统增加物理 资源将更为可观， 在该实施例中， 第一保护带优选为 65.7个子载波。
另外还需要说明的是， 本发明的上述实施例的描述仅是为了对本发明 有更完整清楚的理解， 并不是为了限制本发明， 也就是说不应将本发明限 制在上述三个 20M频段聚合的实施例中 ,对于本发明可将 N个连续的 LTE 频段（带宽可以是 LTE频段的带宽为 1.4MHz,物理层有效传输带为 6PRB; 或 LTE频段的带宽为 3MHz, 物理层有效传输带为 15PRB ； 或 LTE频段 的带宽为 5MHz, 物理层有效传输带为 25PRB ； 或 LTE 频段的带宽为 10MHz, 物理层有效传输带为 50PRB ； 或 LTE频段的带宽为 15MHz, 物 理层有效传输带为 75PRB ； 或 LTE频段的带宽为 20MHz, 物理层有效传 输带为 100PRB中的某一个或多个的组合） 聚合。 其中， 至少一个 LTE频 段的带宽与聚合的其他 LTE频段的带宽不同，也可以全部 LTE频段的带宽 相同， 也就说本发明并不限于聚合的 LTE频段的带宽是单一的， 例如可以 将 20MHz带宽的和 10MHz带宽的一起聚合。并且本发明不仅适用于 LTE-A 和 LTE系统， 还适用于其他通过连续频段频率聚合支持更大传输带的长期 演进宽带移动通信系统。
另外在本发明的上述实施例中，还设置有 LTE和 LTE-A系统公用的保 护带， 第二保护带和边缘带宽。 该第二保护带设置在聚合后总的频段的两 侧作为频率保护带， 其可釆用最小化设计， 例如可按照至少为现有 LTE规 范的频率保护带进行设置。 该第二保护带内包含的物理资源 LTE和 LTE-A 系统均不可用， 而边缘带宽为聚合后总的频段的两侧中有效带宽外侧载波 与第二保护带之间的带宽， 该边缘带宽对于 LTE终端不可见， 对于 LTE-A 终端可见， 这样对于 LTE-A系统来说， 整个聚合后的频段内的除第二保护 带之外的所有物理资源均可用， 因此可以尽可能的充分利用频率资源。 其 中， 在本发明实施例中上述外侧载波是指聚合后总频段两侧的 LTE频段物 理层有效传输带，具体也可参见图 6所示，在三个 LTE频段聚合的情况下， 可将最左侧和最右侧的 LTE频段物理层有效传输带称为外侧载波。
从该实施例也可以看出， 该第二保护带 （ 1.0925MHz )要小于现有技 术方法三中的保护带 （ 2.6925MHz ) , 从而本发明能够有效减少物理资源 的浪费。但是为了抑制现有技术中所提出的 LTE-A终端对 LTE终端的干扰， 优选地， 仅在预定时间段内在第一保护带两侧的 LTE频段物理层有效传输 带上工作的终端均为 LTE-A终端时， 基站才为 LTE-A终端调度第一保护 带中的资源， 以及仅在预定时间段内在外侧载波上工作的终端均为 LTE-A 终端时， 基站才为 LTE-A终端调度外侧载波相邻的边缘带宽的资源， 否则 在第一保护带或边缘带宽上不传输任何信号。
如图 7所示， 为本发明实施例的用于载波聚合的多载波系统的数据发 送和接收方法的流程图， 该方法包括以下步骤：
步骤 S701 ,基站通过载波聚合的多载波系统聚合频段发送或接收数据， 载波聚合的多载波系统聚合频段至少包括两个 LTE频段的物理层有效传输 带， 至少由两个 LTE频段的物理层有效传输带聚合形成， 在两个相邻 LTE 频段的物理层有效传输带之间插入有第一保护带以使 LTE频段物理层有效 传输带的中心在信道栅上， 且第一保护带对 LTE终端不可用， 对载波聚合 的多载波系统的终端可用。 在本实施例中， 该载波聚合的多载波系统可为 LTE-A系统。 其中， 在聚合频段的两侧还设置有第二保护带和边缘带宽， 第二保护带对 LTE终端和 LTE-A系统终端均不可用， 边缘带宽对于 LTE 终端不可用， 但对 LTE-A终端可用。 另外优选地， 每两个相邻 LTE频段的 物理层有效传输带共用一个第一保护带， 且第一保护带、 第二保护带根据 现有 LTE规范进行最小化设置。 作为本发明的一个实施例， 在某一预定时 间段（比如一个或若干个子帧） 内仅当聚合频段中第一保护带两侧的 LTE 频段的物理层有效传输带上工作的终端均为 LTE-A终端时， 基站才将第一 保护带中的资源调度给 LTE-A终端， 以及仅在预定时间段内在外侧载波上 工作的终端均为 LTE-A终端时， 基站才为 LTE-A终端调度外侧载波相邻 的边缘带宽的资源。
步骤 S702 , 终端根据自身的能力在载波聚合的多载波系统聚合频段上 接收或发送数据。 进一步地， 如果终端为 LTE终端， 则第一保护带和第二 保护带以及边缘带宽对 LTE终端不可用， LTE终端从载波聚合的多载波系 统聚合频段的其他部分获取传输的数据； 如果终端为 LTE-A终端， 则仅第 二保护带对 LTE-A终端不可用， LTE-A终端按照基站的调度从第一保护带、 边缘带宽和载波聚合的多载波系统聚合频段的其他部分获取或发送传输的 数据。
如图 8所示， 为本发明实施例的用于载波聚合的多载波系统的数据传 输系统的结构图， 该系统包括第一数据传输装置 100和第一数据传输装置 100服务的至少一个第二数据传输装置 200 ,在该实施例中载波聚合的多载 波系统可为 LTE-A 系统。 第一数据传输装置 100 位于基站侧， 用于通过 LTE-A系统聚合频段发送或接收数据，该 LTE-A系统聚合频段至少由两个 LTE频段的物理层有效传输带聚合形成， 在相邻两个 LTE频段物理层有效 传输带之间插入有第一保护带以使 LTE频段物理层有效传输带的中心在信 道栅上， 且第一保护带对 LTE终端不可用， 对 LTE-A系统的终端可用； 第 二数据传输装置 200位于终端侧， 用于根据自身的能力在 LTE-A系统聚合 频段上接收或发送数据。 其中， 在 LTE-A系统聚合频段的两侧还设置有第 二保护带和边缘带宽， 第二保护带对 LTE终端和 LTE-A终端均不可用，且 每两个相邻 LTE频段的物理层有效传输带共用一个第一保护带， 仅当在某 一预定时间段（比如一个或若干个子帧） 内仅当聚合频段中第一保护带两 侧的 LTE频段的物理层有效传输带上工作的终端均为载波聚合的多载波系 统的终端时， 第一数据传输装置将第一保护带的资源调度给 LTE-A终端， 以及仅在预定时间段内在外侧载波上工作的终端均为 LTE-A终端时， 第一 数据传输装置才为 LTE-A终端调度外侧载波相邻的边缘带宽的资源， 从而 抑制 LTE-A终端对 LTE终端的干扰。其中， 第一保护带和第二保护带可根 据现有 LTE规范进行最小化设置。
其中， 第一数据传输装置 100 包括频段聚合模块 110、 数据发送和接 收模块 120和调度模块 130、 终端能力获取模块 140。 频段聚合模块 110用 于将至少两个 LTE频段的物理层有效传输带聚合为 LTE-A系统聚合频段， 在两个相邻 LTE频段物理层有效传输带之间插入有第一保护带以使 LTE频 段物理层有效传输带的中心在信道栅上， 在聚合频段的两侧设置第二保护 带和边缘带宽， 第二保护带对 LTE终端和 LTE-A终端均不可用； 数据发送 模块 120用于通过频段聚合模块 110聚合的 LTE-A系统聚合频段发送或接 收数据。 调度模块 130用于仅在预定时间段内在第一保护带两侧的 LTE频 段物理层有效传输带上工作的终端均为载波聚合的多载波系统终端时， 将 第一保护带的资源调度给载波聚合的多载波系统终端， 以及仅在预定时间 段内在外侧载波上工作的终端均为 LTE-A终端时， 第一数据传输装置才为 LTE-A终端调度外侧载波相邻的边缘带宽的资源。 终端能力获取模块 140 , 用于接收终端上报的能力信息。
其中， 第二数据传输装置 200包括能力上报模块 210和数据接收和发 送模块 220, 能力上报模块 210用于向基站上报自身的能力。 数据接收和 发送模块 220用于根据能力上报模块 210上报的能力信息在第一数据传输 装置 （位于基站侧）调度的 LTE-A系统聚合频段上接收或发送数据， 如果 第二数据传输装置 200位于 LTE终端侧， 则第一保护带、 第二保护带和边 缘带宽对 LTE终端不可用， LTE终端从 LTE-A系统聚合频段的其他部分 获取传输的数据； 如果第二数据传输装置 200位于为 LTE-A终端侧， 则仅 第二保护带对 LTE-A系统的终端不可用， LTE-A终端从第一保护带、 边缘 带宽和 LTE-A系统聚合频段的其他部分获取或发送传输的数据。
本发明在可以在保证后向兼容性以及提供足够频率保护带的基础上， 尽可能的充分利用频率资源， 并且本发明还可有效抑制载波聚合的多载波 系统的终端（如 LTE-A终端，也可以是其他载波聚合的多载波系统的终端） 对 LTE终端的干 ·ί尤。
尽管已经示出和描述了本发明的实施例， 对于本领域的普通技术人员 而言， 可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例 进行多种变化、 修改、 替换和变型， 本发明的范围由所附权利要求及其等 同限定。

Claims

权利要求书
1、 一种用于载波聚合的多载波系统的数据发送和接收方法， 其特征在 于， 所述方法包括：
基站在载波聚合的多载波系统聚合频段上发送或接收数据，
其中， 终端在所述基站调度的所述载波聚合的多载波系统聚合频段上 接收或发送数据， 所述载波聚合的多载波系统聚合频段包括至少两个长期 演进 LTE频段的物理层有效传输带，且在相邻两个所述 LTE频段的物理层 有效传输带之间插入有第一保护带， 所述第一保护带对 LTE终端不可用， 而对所述载波聚合的多载波系统的终端可用，
所述基站在预定时间段内在所述第一保护带两侧的 LTE频段物理层有 效传输带上工作的终端均为载波聚合的多载波系统终端时， 为所述载波聚 合的多载波系统终端调度所述第一保护带的资源。
2、 如权利要求 1所述的发送和接收方法， 其特征在于， 在所述载波聚 合的多载波系统聚合频段的两侧还设置有第二保护带， 所述第二保护带对 LTE终端和所述载波聚合的多载波系统的终端均不可用。
3、 如权利要求 2所述的发送和接收方法， 其特征在于， 所述第一保护 带、 所述第二保护带根据 LTE规范进行最小化设置。
4、 如权利要求 3所述的发送和接收方法， 其特征在于， 在所述第二保 护带和所述聚合频段有效传输带外侧载波之间还设置有边缘带宽， 所述边 缘带宽对 LTE终端不可用， 而对所述载波聚合的多载波系统的终端可用， 其中， 所述基站在所述外侧载波上工作的终端全为载波聚合的多载波系统 终端时， 为所述长期演进多载波终端调度与所述外侧载波相邻的所述边缘 带宽的资源。
5、 如权利要求 1所述的发送和接收方法， 其特征在于，
所述 LTE频段的带宽为 1.4MHz, 所述物理层有效传输带为 6PRB; 或者， 所述 LTE 频段的带宽为 3MHz , 所述物理层有效传输带为 15PRB ； 或者， 所述 LTE 频段的带宽为 5MHz , 所述物理层有效传输带为 25PRB ；
或者， 所述 LTE 频段的带宽为 10MHz , 所述物理层有效传输带为 50PRB ；
或者， 所述 LTE 频段的带宽为 15MHz , 所述物理层有效传输带为 75PRB ；
或者，所述 LTE频段的带宽为 20MHz,所物理层有效传输带为 100PRB。
6、 如权利要求 1-5任一项所述的发送和接收方法， 其特征在于， 所述 载波聚合的多载波系统为 LTE-A系统。
7、 如权利要求 6所述的发送和接收方法， 其特征在于， 所述终端根据 自身能力在所述载波聚合的多载波系统聚合频段上接收或发送数据具体 为：
如果所述终端为 LTE终端， 则所述第一保护带和所述第二保护带以及 所述边缘带宽对所述 LTE终端均不可用，所述 LTE终端从所述载波聚合的 多载波系统聚合频段的其他部分获取或发送数据。
8、 如权利要求 6所述的发送和接收方法， 其特征在于， 所述终端根据 自身能力在所述载波聚合的多载波系统聚合频段上接收或发送数据具体 为：
如果所述终端为 LTE-A终端， 则仅所述第二保护带对所述 LTE-A终 端不可用， 所述 LTE-A终端按照所述基站的调度从所述第一保护带、 所述 边缘带宽和所述载波聚合的多载波系统聚合频段的其他部分获取或发送数 据。
9、 如权利要求 1所述的数据发送和接收方法， 其特征在于， 所述 LTE 频段物理层有效传输带的中心在信道栅上。
10、 一种用于载波聚合的多载波系统的发送和接收方法， 其特征在于， 所述方法包括：
终端在基站调度的载波聚合的多载波系统聚合频段上发送或接收数 据，
其中， 所述载波聚合的多载波系统聚合频段包括至少两个长期演进 LTE频段的物理层有效传输带， 且在相邻两个所述 LTE频段的物理层有效 传输带之间插入有第一保护带， 所述第一保护带对 LTE终端不可用， 而对 所述载波聚合的多载波系统的终端可用， 所述基站在预定时间段内在所述 第一保护带两侧的 LTE频段物理层有效传输带上工作的终端均为载波聚合 的多载波系统终端时， 为所述载波聚合的多载波系统终端调度所述第一保 护带的资源。
11、 如权利要求 10所述的发送和接收方法， 其特征在于， 在所述载波 聚合的多载波系统聚合频段的两侧还设置有第二保护带， 所述第二保护带 对 LTE终端和所述载波聚合的多载波系统的终端均不可用。
12、 如权利要求 11所述的发送和接收方法， 其特征在于， 所述第一保 护带、 所述第二保护带根据 LTE规范进行最小化设置。
13、 如权利要求 12所述的发送和接收方法， 其特征在于， 在所述第二 保护带和所述聚合频段有效传输带外侧载波之间还设置有边缘带宽， 所述 边缘带宽对 LTE终端不可用，而对所述载波聚合的多载波系统的终端可用， 其中， 所述基站在所述外侧载波上工作的终端全为载波聚合的多载波系统 终端时， 为所述长期演进多载波终端调度与所述外侧载波相邻的所述边缘 带宽的资源。
14、 如权利要求 10所述的发送和接收方法， 其特征在于，
所述 LTE频段的带宽为 1.4MHz, 所述物理层有效传输带为 6PRB; 或者， 所述 LTE 频段的带宽为 3MHz , 所述物理层有效传输带为 15PRB ；
或者， 所述 LTE 频段的带宽为 5MHz , 所述物理层有效传输带为 25PRB ；
或者， 所述 LTE 频段的带宽为 10MHz , 所述物理层有效传输带为 50PRB ；
或者， 所述 LTE 频段的带宽为 15MHz , 所述物理层有效传输带为 75PRB ；
或者，所述 LTE频段的带宽为 20MHz,所物理层有效传输带为 100PRB。
15、 如权利要求 10-14任一项所述的发送和接收方法， 其特征在于， 所述载波聚合的多载波系统为 LTE-A系统。
16、 如权利要求 15所述的发送和接收方法， 其特征在于， 所述终端在 所述载波聚合的多载波系统聚合频段上接收或发送数据具体为：
如果所述终端为 LTE终端， 则所述第一保护带和所述第二保护带以及 所述边缘带宽对所述 LTE终端均不可用，所述 LTE终端从所述载波聚合的 多载波系统聚合频段的其他部分获取或发送数据。
17、 如权利要求 15所述的发送和接收方法， 其特征在于， 所述终端在 所述载波聚合的多载波系统聚合频段上接收或发送数据具体为：
如果所述终端为 LTE-A终端， 则仅所述第二保护带对所述 LTE-A终 端不可用， 所述 LTE-A终端按照所述基站的调度从所述第一保护带、 所述 边缘带宽和所述载波聚合的多载波系统聚合频段的其他部分获取或发送数 据。
18、 如权利要求 10 所述的发送和接收方法， 其特征在于， 所述 LTE 频段物理层有效传输带的中心在信道栅上。
19、 一种用于载波聚合的多载波系统的数据传输系统， 其特征在于， 所述系统包括第一数据传输装置和所述第一数据传输装置所服务的至少一 个第二数据传输装置，
所述第一数据传输装置， 位于基站侧， 用于通过载波聚合的多载波系 统聚合频段发送或接收数据， 其中， 所述载波聚合的多载波系统聚合频段 包括至少两个 LTE频段的物理层有效传输带，在相邻两个所述 LTE频段物 理层有效传输带之间插入有第一保护带， 所述第一保护带对 LTE终端不可 用， 而对所述载波聚合的多载波系统的终端可用， 所述第一数据传输装置 在预定时间段内在所述第一保护带两侧的 LTE频段物理层有效传输带上工 作的终端均为载波聚合的多载波系统终端时， 为所述载波聚合的多载波系 统终端调度所述第一保护带的资源； 以及
所述第二数据传输装置， 位于终端侧， 用于根据所述终端能力在所述 第一数据传输装置调度的所述载波聚合的多载波系统聚合频段上接收或发 送数据。
20、 如权利要求 19所述的数据传输系统， 其特征在于， 在所述载波聚 合的多载波系统聚合频段的两侧还设置有第二保护带， 所述第二保护带对
LTE终端和所述载波聚合的多载波系统的终端均不可用。
21、 如权利要求 20所述的数据传输系统， 其特征在于， 所述第一保护 带、 所述第二保护带根据 LTE规范进行最小化设置。
22、 如权利要求 21所述的数据传输系统， 其特征在于， 在所述第二保 护带和所述聚合频段有效传输带外侧载波之间还设置有边缘带宽， 其中， 所述边缘带宽对 LTE终端不可用， 而对所述载波聚合的多载波系统的终端 可用， 所述第一数据传输装置在预定时间段内在所述外侧载波上工作的终 端均为载波聚合的多载波系统终端时， 为所述载波聚合的多载波系统终端 调度与所述外侧载波相邻的所述边缘带宽的资源。
23、 如权利要求 19所述的数据传输系统， 其特征在于，
所述 LTE频段的带宽为 1.4MHz, 所述物理层有效传输带为 6PRB; 或者， 所述 LTE 频段的带宽为 3MHz , 所述物理层有效传输带为 15PRB ；
或者， 所述 LTE 频段的带宽为 5MHz , 所述物理层有效传输带为 25PRB ；
或者， 所述 LTE 频段的带宽为 10MHz , 所述物理层有效传输带为 50PRB ；
或者， 所述 LTE 频段的带宽为 15MHz , 所述物理层有效传输带为 75PRB ；
或者，所述 LTE频段的带宽为 20MHz,所物理层有效传输带为 100PRB。
24、 如权利要求 19-23 任一项所述的数据传输系统， 其特征在于， 所 述载波聚合的多载波系统为 LTE-A系统。
25、 一种数据传输装置， 其特征在于， 所述数据传输装置位于基站侧， 包括终端能力获取模块、 频段聚合模块、 数据发送和接收模块、 和调度模 块，
所述终端能力获取模块， 用于接收终端上报的能力信息；
所述频段聚合模块， 用于将至少两个 LTE频段的物理层有效传输带聚 合为载波聚合的多载波系统聚合频段， 在相邻两个所述 LTE频段物理层有 效传输带之间插入有第一保护带， 所述第一保护带对 LTE终端不可用， 而 对所述载波聚合的多载波系统的终端可用；
所述数据发送和接收模块， 用于通过所述频段聚合模块聚合的载波聚 合的多载波系统聚合频段发送或接收数据；
所述调度模块， 用于在预定时间段内在所述第一保护带两侧的 LTE频 段物理层有效传输带上工作的终端均为载波聚合的多载波系统终端时， 将 所述第一保护带的资源调度给所述载波聚合的多载波系统终端。
26、 如权利要求 25所述数据传输装置， 其特征在于， 在所述载波聚合 的多载波系统聚合频段的两侧还设置有第二保护带， 所述第二保护带对 LTE终端和所述载波聚合的多载波系统的终端均不可用。
27、如权利要求 26所述数据传输装置，其特征在于，所述第一保护带、 所述第二保护带根据 LTE规范进行最小化设置。
28、 如权利要求 27所述数据传输装置， 其特征在于， 在所述第二保护 带和所述聚合频段有效传输带外侧载波之间还设置有边缘带宽， 其中， 所 述边缘带宽对 LTE终端不可用， 而对所述载波聚合的多载波系统的终端可 用， 所述调度模块在预定时间段内在所述外侧载波上工作的终端均为载波 聚合的多载波系统终端时， 为所述载波聚合的多载波系统终端调度与所述 外侧载波相邻的所述边缘带宽的资源。
29、 如权利要求 25所述数据传输装置， 其特征在于，
所述 LTE频段的带宽为 1.4MHz, 所述物理层有效传输带为 6PRB; 或者， 所述 LTE 频段的带宽为 3MHz , 所述物理层有效传输带为 15PRB ；
或者， 所述 LTE 频段的带宽为 5MHz , 所述物理层有效传输带为 25PRB ；
或者， 所述 LTE 频段的带宽为 10MHz , 所述物理层有效传输带为 50PRB ；
或者， 所述 LTE 频段的带宽为 15MHz , 所述物理层有效传输带为 75PRB ；
或者，所述 LTE频段的带宽为 20MHz,所物理层有效传输带为 100PRB。
30、 一种数据传输装置， 其特征在于， 位于所述终端侧， 包括能力上 报模块和数据接收和发送模块，
所述能力上报模块， 用于向基站上报自身的能力信息；
所述数据接收和发送模块， 用于根据所述能力上报模块的上报的能力 信息在所述基站调度的载波聚合的多载波系统聚合频段上接收或发送数 据。
31、 根据权利要求 30所述的数据传输装置， 其特征在于， 所述数据传 输装置位于 LTE终端侧， 其中， 所述载波聚合的多载波系统聚合频段中的 第一保护带和第二保护带以及边缘带宽对所述 LTE 终端均不可用， 所述 LTE终端从所述载波聚合的多载波系统聚合频段的其他部分获取数据。
32、 根据权利要求 30所述的数据传输装置， 其特征在于， 所述数据传 输装置位于载波聚合的多载波系统终端侧， 所述载波聚合的多载波系统聚 合频段中的第二保护带对所述载波聚合的多载波系统终端不可用， 所述载 波聚合的多载波系统终端按照所述基站的调度从所述载波聚合的多载波系 统聚合频段中的第一保护带、 边缘带宽和所述载波聚合的多载波系统聚合 频段的其他部分获取或发送数据。
33、 如权利要求 30所述数据传输装置， 其特征在于， 所述载波聚合的 多载波系统的终端为 LTE-A终端。
PCT/CN2009/076065 2008-12-26 2009-12-25 载波聚合的多载波系统的发送和接收方法和数据传输装置 Ceased WO2010072178A1 (zh)

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