WO2009059553A1 - Method for assigning pilot resources and the system and the apparatus thereof - Google Patents

Method for assigning pilot resources and the system and the apparatus thereof Download PDF

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Publication number
WO2009059553A1
WO2009059553A1 PCT/CN2008/072905 CN2008072905W WO2009059553A1 WO 2009059553 A1 WO2009059553 A1 WO 2009059553A1 CN 2008072905 W CN2008072905 W CN 2008072905W WO 2009059553 A1 WO2009059553 A1 WO 2009059553A1
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WIPO (PCT)
Prior art keywords
time
symbol
frequency
allocated
srs
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PCT/CN2008/072905
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English (en)
French (fr)
Inventor
Shiqiang Suo
Deshan Miao
Shaohui Sun
Libo Wang
Hai Tang
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Da Tang Mobile Communications Equipment Co., Ltd.
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Application filed by Da Tang Mobile Communications Equipment Co., Ltd. filed Critical Da Tang Mobile Communications Equipment Co., Ltd.
Priority to US12/741,024 priority Critical patent/US20100265910A1/en
Publication of WO2009059553A1 publication Critical patent/WO2009059553A1/zh

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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
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
    • 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), DMT

Definitions

  • the present invention relates to mobile communication technologies, and in particular, to a pilot resource allocation method, system and device. Background of the invention
  • Time division synchronous code division multiple access is the only one of the three major international standards of the third generation mobile communication system that adopts time division duplex (TDD) mode.
  • the TD-SCDMA system supports uplink and downlink asymmetric service transmission. There is greater flexibility in the spectrum. In order to maintain the long-term competitiveness of TD-SCDMA systems, TD-SCDMA systems also need to evolve and improve capabilities.
  • FIG. 1 is a radio frame structure diagram of an LTE TDD system in the prior art.
  • the radio frame length is 10 ms
  • the radio frame is divided into two 5 ms radio half frames.
  • Each radio field consists of 4 subframes and a special area, each subframe contains two 0.5ms time slots, and the special area includes three special time slots, respectively, a downlink pilot time slot (DwPTS) and a guard interval (GP).
  • DwPTS downlink pilot time slot
  • GP guard interval
  • UpPTS uplink pilot time slot
  • the special area contains 14 uplink single carrier (SC-FDMA) symbols
  • SC-FDMA uplink single carrier
  • SC-FDMA uplink single carrier
  • the length of the UpPTS is variable, and any length between 2 and 11 SC-FDMA symbols can be taken in the case of a short CP, and 2 to 9 in the case of a long CP. Any length between SC-FDMA symbols.
  • the first two SC-FDMA symbols in the UpPTS usually need to be assigned to the random access channel (PRACH) for Send 1.25M consecutive uplink random access signals.
  • PRACH random access channel
  • 2a is a special area structure diagram when the UpPTS is 11 SC-FDMA symbol lengths in the case of a short CP in the prior art
  • FIG. 2b is a special case when the UpPTS is 2 SC-FDMA symbol lengths in the case of a short CP in the prior art.
  • Regional structure chart is a special area structure diagram when the UpPTS is 11 SC-FDMA symbol lengths in the case of a short CP in the prior art.
  • uplink sounding pilot (SRS) symbol including uplink channel measurement information also requires a reasonable resource allocation method.
  • SRS resource allocation method for SRS resource allocation there is no specific SRS resource allocation method for SRS resource allocation in special areas in TD-SCDMA. Summary of the invention
  • the embodiment of the present invention provides a pilot resource allocation method, so as to implement allocation of time-frequency resources to SRS symbols in the UpPTS.
  • a method for allocating pilot resources comprising:
  • At least one uplink single carrier to be set In the uplink pilot time slot UpPTS, at least one uplink single carrier to be set
  • the SRS symbol is sent to the mobile terminal.
  • a system for transmitting pilot resources comprising: a base station and a mobile terminal; the base station, configured to: in the uplink pilot time slot UpPTS, set at least one uplink pilot SRS symbol, and send the allocation Result
  • the mobile terminal is configured to receive an allocation result sent by the base station.
  • a base station includes: a resource allocation unit and a sending unit;
  • the resource allocation unit is configured to allocate, in the uplink pilot time slot UpPTS, all time-frequency resources or partial time-frequency resources in the set at least one uplink single-carrier SC-FDMA symbol to the uplink sounding pilot SRS symbol;
  • the sending unit is configured to send an allocation result of the resource allocation unit. It can be seen from the foregoing technical solutions that the method, system, and device provided by the embodiments of the present invention allocate all time-frequency resources or partial time-frequency resources in the set at least one SC-FDMA symbol to the SRS symbol in the UpPTS. And send the result of the assignment to the mobile terminal. Therefore, the time-frequency resource is allocated to the SRS in the UpPTS, so that after receiving the allocation result, the mobile terminal can send the SRS symbol on the time-frequency resource allocated to the SRS symbol according to the allocation result. BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a structural diagram of a radio frame of an LTE TDD system in the prior art
  • 2a is a structural diagram of a special area when the UpPTS is 11 SC-FDMA symbol lengths in the case of a short CP in the prior art;
  • 2b is a structural diagram of a special area when the UpPTS is 2 SC-FDMA symbol lengths in the case of a short CP in the prior art;
  • FIG. 3 is a schematic diagram of a first resource allocation for configuring two SRS symbols according to an embodiment of the present invention
  • Figure 3b is a schematic diagram of a second resource allocation for configuring two SRS symbols according to an embodiment of the present invention
  • FIG. 3c is a schematic diagram of a second resource allocation for configuring two SRS symbols according to an embodiment of the present disclosure
  • FIG. 4 is a structural diagram of a system according to an embodiment of the present invention. Mode for carrying out the invention
  • the method provided by the embodiment of the present invention includes: at least one set in the UpPTS All or part of the time-frequency resources in the SC-FDMA symbol are allocated to the SRS symbol, and the allocation result is transmitted to the mobile terminal.
  • the partial time-frequency resource may be a time-frequency resource corresponding to the measured frequency band in the set at least one SC-FDMA symbol.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • Some or all of the time-frequency resources in the last SC-FDMA symbol of the UpPTS may be allocated to the SRS symbol, and if the last SC-FDMA symbol is occupied by the PRACH, the SC-FDMA symbol is other than the PRACH channel.
  • the frequency resource is allocated to the SRS, and the allocation result is sent to the mobile terminal through a system message. After receiving the allocation result, the mobile terminal sends an SRS symbol by using the time-frequency resource corresponding to the measured frequency band in the last SC-FDMA symbol, and if the time-frequency resource is occupied by the PRACH, the SC-FDMA symbol is not used.
  • the frequency band occupied by the PRACH transmits the SRS symbol, and the SRS symbol can be transmitted using the time-frequency resources occupied by the frequency bands other than the PRACH band in the SC-FDMA symbol.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • All or part of the time-frequency resources in the first SC-FDMA symbol of the UpPTS may be allocated to the SRS symbol, and if the first SC-FDMA symbol is occupied by the PRACH, the SC-FDMA symbol is other than the PRACH channel.
  • Other time-frequency resources are allocated to the SRS, and the allocation result is sent to the mobile terminal through a system message. After receiving the allocation result, the mobile terminal sends an SRS symbol by using the time-frequency resource corresponding to the measured frequency band in the first SC-FDMA symbol. If the time-frequency resource is occupied by the PRACH, the first SC- is not used.
  • the frequency band occupied by the PRACH in the FDMA symbol transmits the SRS symbol, and the SRS symbol can be transmitted using the time-frequency resource occupied by the frequency band other than the PRACH band in the SC-FDMA symbol.
  • part or all of the time-frequency resources of more than one SC-FDMA symbol in the UpPTS may be allocated to the SRS.
  • the time-frequency resource corresponding to the measured frequency band in the set SC-FDMA symbol has been allocated to the PRACH channel
  • the time-frequency resources occupied by the one or more SC-FDMA symbols are other than the PRACH channel.
  • the frequency resource is allocated to the SRS symbol, and the allocation result is sent to the mobile terminal through a system message.
  • the mobile terminal After receiving the allocation result, the mobile terminal sends an SRS symbol by using the time-frequency resource corresponding to the measured frequency band in the set one or more SC-FDMA symbols, and if some part of the time-frequency resource is occupied by the PRACH, the PRACH is not used.
  • the occupied frequency band transmits the SRS symbol, and the SRS symbol can be transmitted by using a time-frequency resource other than the time-frequency resource occupied by the PRACH.
  • the time-frequency resources of the last two SC-FDMA symbols in the UpPTS can be respectively assigned to the SRS symbols.
  • the two SRS symbols may be in the same frequency band of two SC-FDMA symbols, respectively, in different frequency bands of two SC-FDMA symbols, that is, the last two SC-FDMAs in the UpPTS may be
  • the time-frequency resources of the same frequency band in the symbol are allocated to the SRS symbol, as shown in Fig. 3a, where S represents the SRS symbol. It is also possible to allocate time-frequency resources of two different frequency bands in the last two SC-FDMA symbols to the SRS symbol, as shown in Fig. 3b.
  • the time-frequency resources corresponding to the measured frequency bands in the first two symbols in the UpPTS may also be allocated to two SRS symbols.
  • the two RSR symbols may be in the same frequency band or in different frequency bands, that is, the time-frequency resources of the same frequency band in the first two SC-FDMA symbols in the UpPTS may be allocated to the SRS symbol.
  • the time-frequency resources of different frequency bands in the first two SC-FDMA symbols may be allocated to the SRS symbol, and if the time-frequency resource allocated to the SRS symbol and the time-frequency resource allocated to the PRACH are transmitted, the measured frequency band is Symbols, the same two SRS symbols can be configured in the same frequency band; they can also be configured in different frequency bands, as shown in Figure 3c.
  • the time-frequency resource allocated to the SRS symbol has been allocated to the uplink pilot symbol, the time-frequency resource is allocated to the SRS symbol, and the uplink pilot symbol is allocated in the time-frequency resource after the SRS symbol.
  • the base station may further acquire antenna information of the mobile terminal, and specifically allocate part or all of the time-frequency resources of one or more SC-FDMA symbols in the UpPTS to the SRS symbol according to the antenna information of the mobile terminal. For example, if the mobile terminal includes multiple antennas, the base station can allocate time-frequency resources of multiple SC-FDMA symbols to the SRS symbols, so that the mobile terminal can transmit the multiple times on the time-frequency resources of the multiple SC-FDMA symbols in a time division manner.
  • the SRS symbol corresponding to the antennas; the base station may also allocate a time-frequency resource of the SC-FDMA symbol to the SRS symbol, so that the mobile terminal can transmit the multiple antennas on the time-frequency resource of one SC-FDMA symbol by frequency division. SRS symbol.
  • FIG. 4 is a structural diagram of a system according to an embodiment of the present invention. As shown in FIG. 4, the system includes: a base station 400 and a mobile terminal 410.
  • the base station 400 is configured to allocate, in the UpPTS, all time-frequency resources or partial time-frequency resources in the set at least one SC-FDMA symbol to the SRS symbol, and send the allocation result.
  • the mobile terminal 410 is configured to receive an allocation result sent by the base station 400.
  • the base station 400 may include: a resource allocation unit 401 and a sending unit 402.
  • the resource allocation unit 401 is configured to allocate, in the UpPTS, all time-frequency resources or partial time-frequency resources in the set at least one SC-FDMA symbol to the SRS symbol.
  • the resource allocation unit 401 may set the first SC-FDMA symbol, the last SC-FDMA symbol, the first two SC-FDMA symbols or the last two SC-FDMA symbols in the UpPTS, or the set multiple SC- All time-frequency resources in the FDMA symbol or time-frequency resources corresponding to the measured frequency band are allocated to the SRS symbol.
  • the sending unit 402 is configured to send an allocation result of the resource allocating unit 401.
  • the resource allocation unit 401 may include: a probe pilot allocation unit 403 and a determination unit
  • the determining unit 404 is configured to determine whether all time-frequency resources in the set at least one SC-FDMA symbol or time-frequency resources corresponding to the measured frequency band are allocated to the PRACH.
  • the sounding pilot allocation unit 403 is configured to: when the determining unit 404 determines that part of the time-frequency resource has been allocated to the PRACH, all the time-frequency resources in the set at least one SC-FDMA symbol or the time-frequency resource corresponding to the measured frequency band All time-frequency resources allocated to the PRACH channel are allocated to the SRS symbol; when the determining unit 404 determines that no time-frequency resource is allocated to the PRACH, all the time-frequency resources in the set at least one SC-FDMA symbol are The time-frequency resource corresponding to the measurement band is allocated to the SRS symbol.
  • the resource allocation unit 401 may further include: an uplink pilot allocation unit 405.
  • the determining unit 404 is further configured to determine whether all of the time-frequency resources in the set at least one SC-FDMA symbol or the time-frequency resources corresponding to the measured frequency band are allocated to the uplink pilot symbols.
  • the uplink pilot allocation unit 405 is configured to allocate the uplink pilot symbol in the time-frequency resource after the SRS symbol when the determining unit 404 determines that part of the time-frequency resource has been allocated to the uplink pilot symbol.
  • the base station 400 may further include: an antenna information acquiring unit 406, configured to acquire antenna information of the mobile terminal, and provide the antenna information to the resource allocation unit 401.
  • the resource allocation unit 401 is further configured to receive the antenna information acquired by the antenna information acquiring unit 406, and perform the operation of allocating the time-frequency resource to the SRS according to the antenna information.
  • the method, system and device provided by the embodiments of the present invention pass all the time-frequency resources or parts in the set at least one SC-FDMA symbol through the UpPTS.
  • the time-frequency resource is allocated to the SRS symbol, and the allocation result is sent to the mobile terminal. Therefore, the time-frequency resource is allocated to the SRS in the UpPTS, so that after receiving the allocation result, the mobile terminal can send the SRS symbol on the time-frequency resource allocated to the SRS symbol according to the allocation result.
  • a specific method for allocating all time-frequency resources or partial time-frequency resources in the set at least one SC-FDMA symbol to the SRS symbol is specifically given, and the allocation and distribution are given.
  • the specific solution to the conflict of the time-frequency resources of the PRACH or the uplink pilot makes the allocation of the SRS resources more reasonable.

Description

导频资源分配方法、 系统和设备 技术领域
本发明涉及移动通信技术， 特别涉及一种导频资源分配方法、 系统 和设备。 发明背景
时分同步码分多址（TD-SCDMA )是第三代移动通信系统的三种大 国际标准中唯一采用时分双工 （TDD ) 方式的技术， TD-SCDMA 系统 支持上下行非对称业务传输， 在频谱上具有较大的灵活性。 为了保持 TD-SCDMA系统的长期竟争力， TD-SCDMA系统同样需要不断演进和 提高能力。
在 TD-SCDMA系统的长期演进方案（LTE TDD ) 中， 采用如图 1 所示的无线帧结构。 图 1为现有技术中 LTE TDD系统的无线帧结构图， 如图 1所示， 无线帧长为 10ms, 该无线帧分为 2个 5ms的无线半帧。 每个无线半帧包含 4个子帧和一个特殊区域， 每个子帧包含两个 0.5ms 的时隙， 特殊区域包含三个特殊时隙分别为下行导频时隙 （DwPTS )、 保护间隔 （GP )和上行导频时隙 （UpPTS )。 在采用短循环前缀（CP ) 情况下， 特殊区域包含 14个上行单载波（SC-FDMA )符号， 在采用长 CP情况下 , 特殊区域包含 12个 SC-FDMA符号。
为了保持系统的灵活性， UpPTS的长度是可变的， 在采用短 CP的 情况下可以取 2至 11个 SC-FDMA符号之间的任意长度， 在采用长 CP 的情况下可以取 2至 9个 SC-FDMA符号之间的任意长度。 在 UpPTS 的前两个 SC-FDMA符号通常需要分配给随机接入信道（ PRACH )用于 发送 1.25M连续的上行随机接入信号。图 2a为现有技术中短 CP情况下 UpPTS为 11个 SC-FDMA符号长度时的特殊区域结构图， 图 2b为现有 技术中短 CP情况下 UpPTS为 2个 SC-FDMA符号长度时的特殊区域结 构图。 由于在无线通信系统中， 上行信道测量是非常重要的， 所以， 包 含上行信道测量信息的上行探测导频（SRS )符号也需要合理的资源分 配方法。 而针对 TD-SCDMA中特殊区域的 SRS资源分配， 现在尚没有 一种具体的 SRS资源分配方法。 发明内容
本发明实施例提供了一种导频资源分配方法， 以便于实现在 UpPTS 中分配时频资源给 SRS符号。
一种导频资源分配方法， 该方法包括：
在上行导频时隙 UpPTS 中， 将设定的至少一个上行单载波
SRS符号， 并将该分配结果发送给移动终端。
一种导频资源分配的系统， 该系统包括： 基站和移动终端； 所述基站，用于在上行导频时隙 UpPTS中，将设定的至少一个上行 测导频 SRS符号， 并发送该分配结果；
所述移动终端， 用于接收所述基站发送的分配结果。
一种基站， 该基站包括： 资源分配单元和发送单元；
所述资源分配单元，用于在上行导频时隙 UpPTS中，将设定的至少 一个上行单载波 SC-FDMA符号中的全部时频资源或部分时频资源分配 给上行探测导频 SRS符号；
所述发送单元， 用于发送所述资源分配单元的分配结果。 由以上技术方案可以看出，本发明实施例提供的方法、系统和设备， 通过在 UpPTS中，将设定的至少一个 SC-FDMA符号中的全部时频资源 或部分时频资源分配给 SRS符号， 并将该分配结果发送给移动终端。从 而实现了在 UpPTS 中分配时频资源给 SRS, 使得移动终端在接收到分 配结果后， 可以根据该分配结果在分配给 SRS 符号的时频资源上发送 SRS符号。 附图简要说明
图 1为现有技术中 LTE TDD系统的无线帧结构图；
图 2a为现有技术中短 CP情况下 UpPTS为 11个 SC-FDMA符号长 度时的特殊区域结构图；
图 2b为现有技术中短 CP情况下 UpPTS为 2个 SC-FDMA符号长 度时的特殊区域结构图；
图 3a为本发明实施例提供的配置两个 SRS符号的第一种资源分配 示意图；
图 3b为本发明实施例提供的配置两个 SRS符号的第二种资源分配 示意图；
图 3c为本发明实施例提供的配置两个 SRS符号的第二种资源分配 示意图；
图 4为本发明实施例提供的系统结构图。 实施本发明的方式
为了使本发明的目的、 技术方案和优点更加清楚， 下面结合附图和 具体实施例对本发明进行详细描述。
本发明实施例提供方法包括： 在 UpPTS 中， 将设定的至少一个 SC-FDMA符号中的全部或部分时频资源分配给 SRS符号 , 并将该分配 结果发送给移动终端。
其中， 所述的部分时频资源可以是该设定的至少一个 SC-FDMA符 号中被测量频段所对应的时频资源。
下面通过几个实施例分别进行伴细描述。
实施例一：
可以将 UpPTS的最后一个 SC-FDMA符号中的部分或全部时频资源 分配给 SRS符号， 如果最后一个 SC-FDMA符号被 PRACH占用， 则将 该 SC-FDMA符号中除了 PRACH信道之外的其它时频资源分配给 SRS , 并通过系统消息将该分配结果发送给移动终端。 移动终端接收到该分配 结果后， 使用该最后一个 SC-FDMA符号中被测量频段对应的时频资源 发送一个 SRS符号， 如果该时频资源被 PRACH占用， 则不使用该一个 SC-FDMA 符号中 PRACH 占用的频段发送 SRS 符号， 可以使用该 SC-FDMA符号中除了 PRACH频段之外的其它频段所占用的时频资源 发送 SRS符号。
实施例二：
可以将 UpPTS的第一个 SC-FDMA符号中全部或部分的时频资源分 配给 SRS符号， 如果第一个 SC-FDMA符号被 PRACH 占用， 则将该 SC-FDMA符号中除了 PRACH信道之外的其它时频资源分配给 SRS, 并通过系统消息将该分配结果发送给移动终端。 移动终端接收到该分配 结果后， 使用该第一个 SC-FDMA符号中被测量频段对应的时频资源发 送一个 SRS符号， 如果该时频资源被 PRACH占用， 则不使用该第一个 SC-FDMA 符号中 PRACH 占用的频段发送 SRS 符号， 可以使用该 SC-FDMA符号中除了 PRACH频段之外的其它频段所占用的时频资源 发送 SRS符号。 实施例三：
当需要发送一个以上 SRS符号时， 可以将 UpPTS中设定一个以上 的 SC-FDMA符号的部分或全部时频资源分配给 SRS。 同样， 如果该设 定的 SC-FDMA符号中被测量频段对应的时频资源已经分配给 PRACH 信道，则将该一个以上 SC-FDMA符号所占用的时频资源中除了 PRACH 信道之外的其它时频资源分配给 SRS符号 ,并通过系统消息将该分配结 果发送给移动终端。 移动终端接收到该分配结果后， 使用该设定的一个 以上 SC-FDMA符号中被测量频段对应的时频资源发送一个 SRS符号， 如果该时频资源中有部分被 PRACH占用， 则不使用 PRACH占用的频 段发送 SRS符号， 可以使用除了 PRACH所占用的时频资源之外的时频 资源发送 SRS符号。
例如， 当需要发送两个 SRS 符号时， 可以将 UpPTS 中最后两个 SC-FDMA符号的时频资源分别分配给 SRS符号。该两个 SRS符号可以 在分别在两个 SC-FDMA 符号的相同的频段内， 可以分别在两个 SC-FDMA符号的不同的频段内， 也就是说， 可以将 UpPTS中最后两个 SC-FDMA符号中同一频段的时频资源分配给 SRS符号， 如图 3a所示， 图中 S代表 SRS符号。也可以将最后两个 SC-FDMA符号中两个不同频 段的时频资源分配给 SRS符号， 如图 3b所示。
也可以将 UpPTS 中前两个符号中被测量频段对应的时频资源分配 给两个 SRS符号。 同样， 该两个 RSR符号可以在相同的频段内， 也可 以在不同的频段内，也就是说，可以将 UpPTS中前两个 SC-FDMA符号 中同一频段的时频资源分配给 SRS符号，也可以将前两个 SC-FDMA符 号中不同频段的时频资源分配给 SRS符号， 如果该分配给 SRS符号的 时频资源和分配给 PRACH的时频资源发送冲突， 则将该被测量频段中 符号， 同样两个 SRS符号可以配置于同一个频段内； 也可以配置于不同 的频段内， 如图 3c所示。
上述实施例中 ,如果分配给 SRS符号的时频资源已经分配给上行导 频符号， 则将该时频资源分配给 SRS符号， 将该上行导频符号分配在该 SRS符号之后的时频资源内。
另外， 在上述实施例中， 基站还可以获取移动终端的天线信息， 根 据移动终端的天线信息具体将 UpPTS中设定一个以上的 SC-FDMA符号 的部分或全部时频资源分配给 SRS符号。 例如， 如果移动终端包含多天 线， 则基站可以分配多个 SC-FDMA符号的时频资源给 SRS符号， 使移 动终端可以采用时分的方式在多个 SC-FDMA符号的时频资源上发送该 多个天线对应的 SRS符号；基站也可以分配一个 SC-FDMA符号的时频 资源给 SRS符号，使移动终端可以采用频分的方式在一个 SC-FDMA符 号的时频资源上发送该多个天线对应的 SRS符号。
图 4为本发明实施例提供的系统结构图，如图 4所示，该系统包括： 基站 400和移动终端 410。
基站 400， 用于在 UpPTS中， 将设定的至少一个 SC-FDMA符号中 的全部时频资源或部分时频资源分配给 SRS符号， 并发送该分配结果。
移动终端 410， 用于接收基站 400发送的分配结果。
其中， 基站 400可以包括： 资源分配单元 401和发送单元 402。 资源分配单元 401 ,用于在 UpPTS中，将设定的至少一个 SC-FDMA 符号中的全部时频资源或部分时频资源分配给 SRS符号。
其中，资源分配单元 401可以将 UpPTS中的第一个 SC-FDMA符号、 最后一个 SC-FDMA符号、前两个 SC-FDMA符号或最后两个 SC-FDMA 符号， 或设定的多个 SC-FDMA符号中的全部时频资源或被测量频带对 应的时频资源分配给 SRS符号。 发送单元 402， 用于发送资源分配单元 401的分配结果。
资源分配单元 401 可以包括： 探测导频分配单元 403 和判断单元
404。
判断单元 404, 用于判断设定的至少一个 SC-FDMA符号中的全部 时频资源或被测量频带对应的时频资源中， 是否有部分时频资源已分配 给 PRACH。
探测导频分配单元 403, 用于在判断单元 404判断有部分时频资源 已分配给 PRACH时， 将设定的至少一个 SC-FDMA符号中的全部时频 资源或被测量频带对应的时频资源中除了分配给 PRACH信道之外的其 它时频资源分配给 SRS符号；在判断单元 404判断没有时频资源分配给 PRACH时， 将设定的至少一个 SC-FDMA符号中的全部时频资源或被 测量频带对应的时频资源分配给 SRS符号。
资源分配单元 401还可以包括： 上行导频分配单元 405。
判断单元 404, 还用于判断设定的至少一个 SC-FDMA符号中的全 部时频资源或被测量频带对应的时频资源中， 是否有部分时频资源已分 配给上行导频符号。
上行导频分配单元 405， 用于在判断单元 404判断有部分时频资源 已分配给上行导频符号时，将上行导频符号分配在所述 SRS符号之后的 时频资源内。
该基站 400还可以包括： 天线信息获取单元 406， 用于获取移动终 端的天线信息， 并将该天线信息提供给资源分配单元 401。
资源分配单元 401， 还用于接收天线信息获取单元 406获取的天线 信息， 并根据该天线信息执行所述分配时频资源给 SRS的操作。
由以上描述可以看出， 本发明实施例提供的方法、 系统和设备， 通 过 UpPTS中，将设定的至少一个 SC-FDMA符号中的全部时频资源或部 分时频资源分配给 SRS符号， 并将该分配结果发送给移动终端。从而实 现了在 UpPTS 中分配时频资源给 SRS, 使得移动终端在接收到分配结 果后， 可以根据该分配结果在分配给 SRS符号的时频资源上发送 SRS 符号。
并且， 在本发明实施例中具体给出了几种将设定的至少一个 SC-FDMA符号中的全部时频资源或部分时频资源分配给 SRS符号的具 体方法， 并给出了在与分配给 PRACH或上行导频的时频资源发生冲突 时的具体解决方法， 使得 SRS资源的分配更加的合理。
以上所述仅为本发明的较佳实施例而已， 并不用以限制本发明， 凡 在本发明的精神和原则之内， 所做的任何修改、 等同替换、 改进等， 均 应包含在本发明保护的范围之内。

Claims

权利要求书
1、 一种导频资源分配方法， 其特征在于， 该方法包括：
在上行导频时隙 UpPTS 中， 将设定的至少一个上行单载波
SRS符号， 并将该分配结果发送给移动终端。
2、 根据权利要求 1 所述的方法， 其特征在于， 所述至少一个上行 单载波 SC-FDMA符号包括： UpPTS中的第一个 SC-FDMA符号、 最后 一个 SC-FDMA符号、 前两个 SC-FDMA符号、 最后两个 SC-FDMA符 号， 或设定的多个 SC-FDMA符号。
3、 根据权利要求 1 所述的方法， 其特征在于， 当所述设定的 SC-FDMA符号为一个以上时， 所述分配给 SRS符号的时频资源在相同 频带内， 或在不同频带内。
4、 根据权利要求 1 所述的方法， 其特征在于， 当所述设定的至少 一个上行单载波 SC-FDMA符号中的全部时频资源或部分时频资源中， 有部分时频资源已分配给 PRACH 信道， 则将所述设定的至少一个 SC-FDMA 符号中的全部时频资源或部分时频资源中除了分配给 PRACH信道之外的其它时频资源分配给所述 SRS符号。
5、 根据权利要求 1 所述的方法， 其特征在于， 当所述设定的至少 一个 SC-FDMA符号中的全部时频资源或部分时频资源中， 有部分时频 资源已分配给上行导频符号， 则将该时频资源分配给所述 SRS符号， 将 所述上行导频符号分配在所述 SRS符号之后的时频资源内。
6、 根据权利要求 1至 5任一权项所述的方法， 其特征在于， 该方 法还包括： 所述移动终端接收到所述分配结果后，在所述分配给 SRS符 号的时频资源中发送 SRS符号。
7、 根据权利要求 1至 5任一权项所述的方法， 其特征在于， 该方 法还包括： 获取移动终端的天线信息， 根据所述移动终端的天线信息执 行所述时频资源的分配步骤。
8、 根据权利要求 7 所述的方法， 其特征在于， 该方法还包括： 移 动终端接收到所述分配结果后， 如果所述移动终端包含多天线， 则在所 述分配给 SRS符号的时频资源上采用时分或频分的方式发送 SRS符号。
9、 根据权利要求 1所述的方法， 其特征在于， 所述分配给 SRS符 号的部分时频资源为设定的至少一个 SC-FDMA符号中被测量频段对应 的时频资源。
10、 一种导频资源分配的系统， 其特征在于， 该系统包括： 基站和 移动终端；
所述基站，用于在上行导频时隙 UpPTS中，将设定的至少一个上行 测导频 SRS符号， 并发送该分配结果；
所述移动终端， 用于接收所述基站发送的分配结果。
11、 一种基站， 其特征在于， 该基站包括： 资源分配单元和发送单 元；
所述资源分配单元，用于在上行导频时隙 UpPTS中，将设定的至少 一个上行单载波 SC-FDMA符号中的全部时频资源或部分时频资源分配 给上行探测导频 SRS符号；
所述发送单元， 用于发送所述资源分配单元的分配结果。
12、根据权利要求 11所述的基站， 其特征在于， 所述资源分配单元 包括： 探测导频分配单元和判断单元；
所述判断单元， 用于判断所述设定的至少一个 SC-FDMA符号中的 全部时频资源或被测量频带对应的时频资源中 , 是否有部分时频资源已 分配给随机接入信道 PRACH;
所述探测导频分配单元， 用于在所述判断单元判断有部分时频资源 已分配给 PRACH时， 将所述设定的至少一个 SC-FDMA符号中的全部 时频资源或被测量频带对应的时频资源中除了分配给 PRACH信道之外 的其它时频资源分配给所述 SRS符号；在所述判断单元判断没有时频资 源分配给 PRACH时， 将所述设定的至少一个 SC-FDMA符号中的全部 时频资源或被测量频带对应的时频资源分配给所述 SRS符号。
13、 根据权利要求 12所述的基站， 其特征在于， 所述资源分配单 元还包括： 上行导频分配单元；
所述判断单元， 还用于判断所述设定的至少一个 SC-FDMA符号中 的全部时频资源或被测量频带对应的时频资源中， 是否有部分时频资源 已分配给上行导频符号；
所述上行导频分配单元， 用于在所述判断单元判断有部分时频资源 已分配给上行导频符号时，将所述上行导频符号分配在所述 SRS符号之 后的时频资源内。
14、根据权利要求 11所述的基站， 其特征在于， 该基站还包括： 天 线信息获取单元， 用于获取移动终端的天线信息， 并将该天线信息提供 给所述资源分配单元；
所述资源分配单元， 还用于接收所述天线信息获取单元获取的天线 信息， 并根据所述天线信息执行所述分配时频资源给 SRS的操作。
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