WO2011120429A1 - 正交覆盖码配置和跳频配置指示方法和装置 - Google Patents

正交覆盖码配置和跳频配置指示方法和装置 Download PDF

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Publication number
WO2011120429A1
WO2011120429A1 PCT/CN2011/072285 CN2011072285W WO2011120429A1 WO 2011120429 A1 WO2011120429 A1 WO 2011120429A1 CN 2011072285 W CN2011072285 W CN 2011072285W WO 2011120429 A1 WO2011120429 A1 WO 2011120429A1
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Prior art keywords
configuration
orthogonal cover
cover code
hopping
frequency hopping
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French (fr)
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WO2011120429A9 (zh
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陈文洪
缪德山
拉盖施
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China Academy of Telecommunications Technology CATT
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China Academy of Telecommunications Technology CATT
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0014Three-dimensional division
    • H04L5/0016Time-frequency-code
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69Spread spectrum techniques
    • H04B1/713Spread spectrum techniques using frequency hopping

Definitions

  • Orthogonal cover code configuration and frequency hopping configuration indication method and device Orthogonal cover code configuration and frequency hopping configuration indication method and device
  • the present invention relates to the field of communications, and in particular, to an orthogonal cover code configuration and a frequency hopping configuration indication method and apparatus. Background technique
  • uplink multi-antenna transmission is introduced, and the terminal can use multiple RF channels to transmit data to achieve higher spectral efficiency.
  • OCC Orthogonal Cover Code
  • OCC can only be used in non-time slot frequency hopping systems. If the cell enables group hopping or sequence hopping, occ cannot be used.
  • group hopping and sequence hopping of each user can be independently configured by signaling of PDCCH, thereby fully utilizing OCC to ensure orthogonality.
  • MIMO Multiple Input Multiple Output
  • MIMO transmission can be implemented in two ways: SU-MIMO (single-user multiple-input multiple-output) and MU-MIMO (multi-user multiple-input multiple-output).
  • SU-MIMO uses spatial multiplexing to transmit multiple data streams of a certain user on the same time-frequency resource;
  • MU-MIMO uses multiple orthogonality between users to send multiple users on the same time-frequency resource. data. Without increasing bandwidth, MIMO technology can multiply the capacity and spectral efficiency of communication systems.
  • the DMRSs of different ports occupy the same time-frequency resource, and the orthogonality of the DMRS sequences ensures that the receiving end can separately estimate the channel of each port.
  • the DMRSs of multiple users occupy the same resources, and the orthogonality of the DMRS sequences is used to ensure that the receiving end can detect each user's respective channel.
  • the OFDMRS sequence For SU-MIMO transmission, if the uplink transmission bandwidth is narrow, the DMRS sequence is very short, this If the number of transmitted data streams is large, the orthogonality between the DMRS sequences is difficult to guarantee. Similarly, in MU-MIMO transmission, if the multiplexed user transmission bandwidth is different, the length of the DMRS sequence is also different, and the orthogonality of the DMRS sequence cannot be guaranteed. At this time, an OCC sequence can be introduced, and two columns of DMRS sequences of different ports are multiplied by different OCC weights to ensure orthogonality of DMRS sequences of different ports, as shown in FIG. 1 .
  • the weighting value configuration of the OCC can only be indicated to the UE by the base station through signaling.
  • part of the DMRS port of the user is weighted by OCC of [1 1] (ie, no OCC weighting is performed), and another part of the DMRS port is weighted by OCC of [1 -1], then the two ports can be It is possible to use OCC to maintain orthogonality. If the user and other users multiplex the MU-MIMO transmission, the two users can use the MU-MIMO respectively.
  • [1 1] and [1 -1] weight each DMRS port to use OCC to guarantee the orthogonality of DMRS between users, even if the bandwidth configured by two users is different.
  • the base station can also disable the user's OCC weighting as needed. Therefore, as long as the OCC weighting value of each DMRS port of each user is properly configured, the orthogonality between DMRS ports of different users or DMRS ports of different users can be maintained, regardless of whether the user is SU-MIMO mode or MU-MIMO mode. .
  • the current group hopping and sequence hopping are cell configuration parameters, and each user cannot be configured separately. Therefore, the cell that enables such frequency hopping cannot use OCC.
  • an object of the present invention is to provide an orthogonal cover code configuration and a frequency hopping configuration indication method and apparatus, to solve at least the above problems, and to achieve the above object, according to the present invention.
  • An aspect of the present invention provides an orthogonal coverage code configuration and a frequency hopping configuration indication method, including: the base station indicates, by signaling, an orthogonal coverage code configuration or a frequency hopping configuration, where the orthogonal coverage code configuration and the location Another configuration in the frequency hopping configuration is bound to it and has a predetermined mapping relationship.
  • an orthogonal cover code configuration and a frequency hopping configuration indication apparatus including: a signaling setting unit, configured to set an orthogonal cover code configuration or a frequency hopping configuration to signaling sent to a terminal And the another configuration of the orthogonal coverage code configuration and the frequency hopping configuration is bound to have a predetermined mapping relationship; and the signaling sending unit is configured to send the set signaling to the terminal.
  • a terminal including: a signaling receiving unit, configured to receive signaling configured with an orthogonal cover code configuration or a frequency hopping configuration, where the orthogonal cover code configuration and the Another configuration in the frequency hopping configuration is bound to the predetermined configuration.
  • the processing unit is configured to determine, according to the orthogonal coverage code configuration or the frequency hopping configuration in the received signaling, how to perform orthogonal cover code weighting. And decide whether to perform group hopping or sequence hopping.
  • the joint indication method and apparatus for the OCC configuration and the frequency hopping configuration of the present invention can indicate the configuration of the frequency hopping while indicating the OCC configuration, improve the flexibility of the OCC utilization, and reduce the signaling overhead by the binding relationship configured by the two. . DRAWINGS
  • 1 is a schematic diagram of introducing orthogonal cover codes for weighting to ensure orthogonality of DMRSs of different ports;
  • FIG. 2 is a flowchart of an orthogonal cover code configuration and a frequency hopping configuration indication method according to an embodiment of the present invention
  • FIG. 3 is an orthogonal cover code configuration and frequency hopping configuration indicating device according to an embodiment of the present invention. Schematic;
  • FIG. 4 is a schematic diagram of a terminal in accordance with an embodiment of the present invention. detailed description
  • the present invention provides a joint indication method and apparatus for OCC configuration and frequency hopping configuration, which uses DCI (downlink control channel signaling) domain or higher layer signaling of a downlink control channel (PDCCH) to indicate uplink OCC configuration or frequency hopping configuration.
  • DCI downlink control channel signaling
  • PDCCH downlink control channel
  • an orthogonal cover code configuration and a frequency hopping configuration indication method in accordance with an embodiment of the present invention.
  • an orthogonal cover code configuration and a frequency hopping configuration indication method according to an embodiment of the present invention include:
  • the base station indicates, by using the signaling, the orthogonal coverage code configuration or the frequency hopping configuration, where the orthogonal coverage code configuration and the other configuration of the frequency hopping configuration are bound to each other, and have a predetermined mapping relationship.
  • the terminal performs orthogonal cover code weighting according to the received orthogonal cover code configuration or a frequency hopping configuration and a predetermined mapping relationship, and determines whether to perform group hopping or sequence hopping.
  • the base station indicates the orthogonal cover code configuration or the frequency hopping configuration to the terminal through the downlink control of the downlink control channel; the QoS or the radio resource control signaling of the terminal.
  • the base station indicates the orthogonal cover code configuration using 2-bit signaling in the downlink control message.
  • the predetermined mapping relationship between the orthogonal cover code configuration and the frequency hopping configuration is:
  • Mapping relationship three all demodulation reference signal ports are weighted by the orthogonal cover code of [1, -1], and group hopping or sequence hopping is not enabled;
  • mapping relationship is four, the orthogonal cover code function is not enabled, and the group hopping and sequence hopping are used for cell configuration.
  • the base station uses the 1-bit signaling in the downlink control message to indicate orthogonal cover code configuration or frequency hopping Set.
  • the predetermined mapping relationship between the orthogonal cover code configuration and the frequency hopping configuration is as follows: mapping relationship 1, the group hopping or sequence hopping is not enabled, the orthogonal cover code function is enabled; the mapping relationship 2, the group hopping The frequency and sequence hopping are used in the cell configuration, and the orthogonal cover code function is not enabled.
  • the base station indicates the orthogonal cover code configuration or the frequency hopping configuration by using 1-bit high layer signaling in the radio resource control signaling.
  • the predetermined mapping relationship between the orthogonal cover code configuration and the frequency hopping configuration is:
  • Mapping relationship 1 The group hopping or sequence hopping is not enabled, and the orthogonal cover code function is enabled.
  • mapping relationship 2 group hopping and sequence hopping use the cell configuration, and the orthogonal cover code function is not enabled.
  • the orthogonal cover code configuration and frequency hopping configuration indicating apparatus 300 includes:
  • the signaling setting unit 302 is configured to set an orthogonal cover code configuration or a frequency hopping configuration to the signaling sent to the terminal, where the orthogonal cover code configuration and another configuration of the frequency hopping configuration are Binding therewith, having a predetermined mapping relationship; and signaling unit 304 for transmitting the set signaling to the terminal.
  • the signaling setting unit sets an orthogonal cover code configuration or a frequency hopping configuration in a downlink control message or a radio resource control signaling of the downlink control channel.
  • the signaling setting unit sets 2 bits in the downlink control message to indicate the orthogonal cover code configuration.
  • the predetermined mapping relationship between the orthogonal cover code configuration and the frequency hopping configuration is:
  • Mapping relationship three all demodulation reference signal ports are weighted by the orthogonal cover code of [1, -1], and group hopping or sequence hopping is not enabled;
  • Mapping relationship four does not enable orthogonal cover code function, group frequency hopping and sequence frequency hopping Set.
  • the signaling setting unit sets 1 bit in the downlink control message to indicate the orthogonal cover code configuration or the frequency hopping configuration.
  • the predetermined mapping relationship between the orthogonal cover code configuration and the frequency hopping configuration is:
  • Mapping relationship 1 the group hopping or sequence hopping is not enabled, and the orthogonal cover code is enabled;
  • the signaling setting unit sets 1-bit high-level signaling in the radio resource control signaling for indicating an orthogonal cover code configuration or a frequency hopping configuration.
  • the predetermined mapping relationship between the orthogonal cover code configuration and the frequency hopping configuration is:
  • mapping relationship 1 the group hopping or sequence hopping is not enabled, and the orthogonal cover code function is enabled; the mapping relationship 2, the group hopping and the sequence hopping are used in the cell configuration, and the orthogonal cover code function is not enabled.
  • the terminal 400 includes:
  • the signaling receiving unit 402 is configured to receive signaling configured with an orthogonal cover code configuration or a frequency hopping configuration, where the orthogonal cover code configuration and another configuration of the frequency hopping configuration are bound thereto, and Predetermined mapping relationship;
  • the processing unit 404 is configured to determine how to perform orthogonal cover code weighting according to the orthogonal cover code configuration or the frequency hopping configuration and the predetermined mapping relationship in the received signaling, and determine whether to perform group hopping or sequence hopping.
  • the predetermined mapping relationship may be the relationship listed in the embodiment of the present invention, or may be other predetermined mapping relationships, as long as the binding of the two configurations can be implemented.
  • the base station can indicate the OCC and the frequency hopping configuration of the terminal by adding a number of bits in the DCI domain of the downlink control channel PDCCH of each terminal, including the following two indication schemes.
  • the indication bits are all UE-specific, that is, valid only for the terminal that receives the indication bit.
  • Solution 1 Use 2-bit signaling to indicate the configuration of the OCC, and bind the frequency hopping configuration to it at the same time; Indication bit occ configuration corresponding if mega frequency configuration
  • All DMRS ports use the OCC weighting of [1 1].
  • the group hopping or sequence hopping code is not enabled.
  • All DMRS ports use [1 -1] OCC weighting. Group hopping or sequence hopping code is not enabled.
  • the “part” includes but is not limited to one of the "odd part", “even part", “first half” and "second half".
  • the base station can use the above method to indicate the configuration of the OCC by using 2-bit signaling, and the user can determine which frequency hopping configuration to use according to whether the OCC is enabled: If the OCC (the first three cases) is enabled, the base station is not enabled. Band hopping and sequence hopping. If OCC is not enabled (fourth case), the frequency hopping configuration of the cell is used.
  • Solution 2 Use 1-bit signaling to indicate a frequency hopping configuration or an OCC configuration, and another configuration is bound to it;
  • the base station can use 1-bit signaling to indicate whether to disable the group hopping and sequence hopping function. If the terminal needs to know the configuration of the OCC, it can be obtained according to the configuration of the frequency hopping: If the frequency hopping function is disabled, enable OCC function (not necessarily the user's DMRS transmission uses OCC, just indicates that OCC is available).
  • the base station may add a number of bits in the RRC signaling of each UE to indicate the frequency hopping configuration and OCC configuration of the terminal, and the indication scheme is as follows.
  • the indication bits are all UE-specific, that is, only valid for the terminal that receives the indication bit.
  • Solution 3 Use 1-bit high-level signaling to indicate frequency hopping configuration or OCC configuration, and another configuration is bound to it; Indication bit hopping configuration 0CC configuration
  • the base station can use 1-bit signaling to indicate whether to disable the group hopping and sequence hopping function. If the terminal needs to know the configuration of the OCC, it can be obtained according to the configuration of the frequency hopping: If the frequency hopping function is disabled, enable OCC function (not necessarily the user's DMRS transmission uses OCC, just indicates that OCC is available).
  • the terminal After receiving the OCC or the frequency hopping configuration indication bit sent by the base station, the terminal determines how to perform OCC weighting on the DMRS sequence of each DMRS port according to the content indicated by the indication bit, and determines whether to perform group hopping or sequence hopping.
  • the invention has wide applicability and can be applied to any antenna number and antenna array (such as line array, polarization array), any duplex system (TDD system or FDD system) and any transmission mode (such as SU-MIMO, MU- Uplink transmission under MIMO, CoMP).
  • the content indicated by the different indication bits is exchangable, that is, the indication content of a certain indication bit may be interchanged with the indication content of any other indication bit in the same table, as long as the indication content does not exceed the scope of the listed table. , are within the protection scope of this patent.
  • the joint indication method and apparatus for the OCC configuration and the frequency hopping configuration of the present invention use the downlink control channel (PDCCH) or the RRC signaling to indicate the uplink OCC configuration or the frequency hopping configuration, and reduce the signaling by the binding relationship configured by the two. Overhead.
  • the invention has the following advantages:
  • the user can know whether the OCC is enabled through this indication method, and know whether group hopping or sequence hopping is needed to increase the flexibility of scheduling;

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Description

正交覆盖码配置和跳频配置指示方法和装置
技术领域
本发明涉及通信领域, 尤其涉及一种正交覆盖码配置和跳频配置指示 方法和装置。 背景技术
在 LTE-A中引入了上行多天线传输, 终端可以利用多个射频通道发送 数据, 达到更高的频谱效率。 为了保证单用户多层传输和多用户传输时的 性能, 减少层间和用户间干扰, 可以引入 OCC ( Orthogonal Cover Code, 正交覆盖码) 来保证层间或者用户间的正交性。 但是, OCC只能用于非时 隙跳频系统, 如果小区使能了组跳频或者序列跳频, 则不能使用 occ。 为 了使这类小区中的用户能够使用 OCC, 可以通过 PDCCH的信令来独立配 置每个用户的组跳频和序列跳频, 从而充分利用 OCC保证正交性。
MIMO (多输入多输出 )技术在发射端和接收端都釆用多根天线进行 发送接收, 从而大大提高了系统的传输性能和容量。 在上行传输中, 可以 通过两种方法来实现 MIMO 传输: SU-MIMO (单用户多输入多输出) 和 MU-MIMO (多用户多输入多输出) 。 SU-MIMO利用空间复用技术, 在同 样的时频资源上发送某个用户的多个数据流; 而 MU-MIMO利用用户间的 正交性, 在相同的时频资源上发送多个用户的数据。 在不增加带宽的情况 下, MIMO技术可以成倍地提高通信系统的容量和频谱效率。
在 SU-MIMO 传输中, 多个数据流占据相同的时频资源, 需要通过 DMRS获得每个数据流(一个数据流对应一个上行端口 )对应的上行信道, 才能分别检测出每个流的数据。 不同端口的 DMRS占据相同的时频资源, 通过 DMRS序列的正交性来保证接收端能够分别估计出每个端口的信道。 在上行 MU-MIMO传输中, 多个用户的 DMRS占据了相同的资源, 也是通 过 DMRS序列的正交性来保证接收端能够检测出每个用户各自的信道。
对于 SU-MIMO传输, 如果上行传输带宽较窄, DMRS序列很短, 此 时如果发送数据流较多, 则 DMRS序列间的正交性很难保证。 同样地, 在 MU-MIMO传输中, 如果复用的用户传输带宽不同, 则其 DMRS序列的长 度也不同, 无法保证 DMRS序列的正交性。 此时可以引入 OCC序列, 不 同端口的两列 DMRS 序列乘以不同的 OCC 加权, 从而保证不同端口的 DMRS序列的正交性, 如图 1所示。
由于 UE不知道自己所处的传输模式, 因此 OCC的加权值配置只能通 过基站通过信令指示给 UE。 在 SU-MIMO模式下, 用户的一部分 DMRS 端口釆用 [1 1]的 OCC加权(即不进行 OCC加权) , 另一部分 DMRS端口 釆用 [1 -1]的 OCC加权, 则这两部分端口可就可以利用 OCC保持正交性。 如果用户和其他用户复用进行 MU-MIMO传输, 则两个用户可以分别釆用
[1 1]和 [1 -1]对各自的 DMRS端口进行加权, 就可以利用 OCC保证用户间 DMRS 的正交性, 即使两个用户配置的带宽不同。 同时, 基站也可以根据 需要不使能用户的 OCC加权。 所以, 只要合理配置每个用户各个 DMRS 端口的 OCC加权值, 就能保持某个用户各个 DMRS端口间或者不同用户 的 DMRS端口间的正交性, 不管用户是 SU-MIMO模式还是 MU-MIMO模 式。 目前可以有几种方法来指示 OCC的配置:
1 )将 OCC的配置和 DMRS的 CS ( Cycle Shift, 循环移位 )指示绑定, 不需要额外指示;
2 ) 将 OCC的配置和 RI ( Rank Indicator, 秩指示 ) 、 CS指示绑定, 不需要额外指示;
3 ) 用 1 比特显性指示前两个端口的 OCC加权值 (两种可能加权) , 后两个端口预定义;
同时, 目前组跳频和序列跳频是小区配置参数, 每个用户不能单独配 置, 因此使能了这类跳频的小区则无法使用 OCC。
上述 OCC配置指示方法存在以下缺点:
1 ) 支持的场景有限, 很难支持高阶的 MU-MIMO, 且调度受限;
2 )有些方案复杂度较高;
3 ) 用户很难通过指示判断是否使能了 OCC功能;
同时, 目前没有方案可以支持用户独立的组跳频和序列跳频配置。 发明内容
针对相关技术中存在的一个或多个问题, 本发明的目的在于提供一种 正交覆盖码配置和跳频配置指示方法和装置, 以解决上述问题中的至少之 为实现上述目的, 根据本发明的一个方面, 提供了一种正交覆盖码配 置和跳频配置指示方法, 包括: 基站通过信令向终端指示正交覆盖码配置 或跳频配置, 其中, 所述正交覆盖码配置和所述跳频配置中的另一种配置 与其绑定, 具有预定映射关系。
根据本发明的一个方面, 提供了一种正交覆盖码配置和跳频配置指示 装置, 包括: 信令设置单元, 用于将正交覆盖码配置或跳频配置设置到发 送至终端的信令中, 其中, 所述正交覆盖码配置和所述跳频配置中的另一 种配置与其绑定, 具有预定映射关系; 以及信令发送单元, 用于将设置后 的信令发送至终端。
根据本发明的一个方面, 提供了一种终端, 包括: 信令接收单元, 用 于接收设置有正交覆盖码配置或跳频配置的信令, 其中, 所述正交覆盖码 配置和所述跳频配置中的另一种配置与其绑定, 具有预定映射关系; 处理 单元, 用于根据所接收到的信令中的正交覆盖码配置或跳频配置决定如何 进行正交覆盖码加权 , 并且决定是否进行组跳频或序列跳频。
通过本发明的 OCC配置和跳频配置的联合指示方法和装置,可以在指 示 OCC配置的同时指示跳频的配置, 提高 OCC利用的灵活性并通过两者 配置的绑定关系来减少信令开销。 附图说明
图 1是引入正交覆盖码进行加权以保证不同端口的 DMRS的正交性的 示意图;
图 2是根据本发明的实施例的正交覆盖码配置和跳频配置指示方法的 流程图;
图 3是根据本发明的实施例的正交覆盖码配置和跳频配置指示装置的 示意图; 以及
图 4是根据本发明的实施例的终端的示意图。 具体实施方式
本发明提出了一种 OCC配置和跳频配置的联合指示方法和装置,利用 下行控制信道(PDCCH ) 的 DCI (下行控制信道信令)域或者高层信令来 指示上行的 OCC配置或者跳频配置, 两种配置通过映射关系绑定。
图 2是根据本发明的实施例的正交覆盖码配置和跳频配置指示方法的 流程图。 如图 2所示, 根据本发明的实施例的正交覆盖码配置和跳频配置 指示方法包括:
S202 , 基站通过信令向终端指示正交覆盖码配置或跳频配置, 其中, 所述正交覆盖码配置和所述跳频配置中的另一种配置与其绑定, 具有预定 映射关系。
S204 ,终端根据接收到的正交覆盖码配置或跳频配置和预定映射关系, 进行正交覆盖码加权并决定是否进行组跳频或序列跳频。
基站通过下行控制信道的下行控制; %息或终端的无线资源控制信令向 终端指示正交覆盖码配置或跳频配置。
基站利用下行控制消息中的 2比特信令指示正交覆盖码配置。 在这种 情况下, 正交覆盖码配置与跳频配置的预定映射关系为:
映射关系一, 所有解调参考信号端口都釆用 [1,1]的正交覆盖码正交覆 盖码加权, 不使能组跳频或者序列跳频;
映射关系二,一部分解调参考信号端口釆用 [1,1]的正交覆盖码加权码, 其他解调参考信号端口釆用 [1,-1]的正交覆盖码加权, 不使能组跳频或序列 跳频;
映射关系三, 所有解调参考信号端口都釆用 [1,-1]的正交覆盖码加权, 不使能组跳频或序列跳频; 以及
映射关系四, 不使能正交覆盖码功能, 组跳频和序列跳频釆用小区配 置。
基站利用下行控制消息中的 1 比特信令指示正交覆盖码配置或跳频配 置。 在这种情况下, 正交覆盖码配置与跳频配置的预定映射关系为: 映射关系一, 不使能组跳频或序列跳频, 使能正交覆盖码功能; 映射关系二, 组跳频和序列跳频釆用小区配置, 不使能正交覆盖码功 能。
基站利用无线资源控制信令中的 1 比特高层信令指示正交覆盖码配置 或跳频配置。 在这种情况下, 正交覆盖码配置与跳频配置的预定映射关系 为:
映射关系一, 不使能组跳频或者序列跳频, 使能正交覆盖码功能; 映射关系二, 组跳频和序列跳频釆用小区配置, 不使能正交覆盖码功 能。
图 3是根据本发明的实施例的正交覆盖码配置和跳频配置指示装置的 示意图。 如图 3所示, 根据本发明的实施例的正交覆盖码配置和跳频配置 指示装置 300包括:
信令设置单元 302 , 用于将正交覆盖码配置或跳频配置设置到发送至 终端的信令中, 其中, 正所述正交覆盖码配置和所述跳频配置中的另一种 配置与其绑定, 具有预定映射关系; 以及信令发送单元 304 , 用于将设置 后的信令发送至终端。
其中, 信令设置单元在下行控制信道的下行控制消息或无线资源控制 信令中设置正交覆盖码配置或跳频配置。
信令设置单元在下行控制消息中设置 2比特, 用于指示正交覆盖码配 置。 在这种情况下, 正交覆盖码配置与跳频配置的预定映射关系为:
映射关系一, 所有解调参考信号解调参考信号端口都釆用 [1,1]的正交 覆盖码正交覆盖码加权码, 不使能组跳频或者序列跳频;
映射关系二,一部分解调参考信号端口釆用 [1,1]的正交覆盖码加权码, 其他解调参考信号端口釆用 [1,-1]的正交覆盖码加权, 不使能组跳频或序列 跳频;
映射关系三, 所有解调参考信号端口都釆用 [1,-1]的正交覆盖码加权, 不使能组跳频或序列跳频; 以及
映射关系四, 不使能正交覆盖码功能, 组跳频和序列跳频釆用小区配 置。
信令设置单元在下行控制消息中设置 1 比特, 用于指示正交覆盖码配 置或跳频配置。 在这种情况下, 正交覆盖码配置与跳频配置的预定映射关 系为:
映射关系一, 不使能组跳频或序列跳频, 使能正交覆盖码;
映射关系二, 组跳频和序列跳频釆用小区配置, 不使能正交覆盖码。 信令设置单元在无线资源控制信令中设置 1 比特高层信令, 用于指示 正交覆盖码配置或跳频配置。 在这种情况下, 正交覆盖码配置与跳频配置 的预定映射关系为:
映射关系一, 不使能组跳频或者序列跳频, 使能正交覆盖码功能; 映射关系二, 组跳频和序列跳频釆用小区配置, 不使能正交覆盖码功
•6 fi匕
图 4是根据本发明的实施例的终端的示意图。 如图 4所示, 根据本发 明的实施例的终端 400包括:
信令接收单元 402 , 用于接收设置有正交覆盖码配置或跳频配置的信 令, 其中, 所述正交覆盖码配置和所述跳频配置中的另一种配置与其绑定, 具有预定映射关系;
处理单元 404 , 用于根据所接收到的信令中的正交覆盖码配置或跳频 配置和预定映射关系, 决定如何进行正交覆盖码加权, 并且决定是否进行 组跳频或序列跳频。
预定映射关系可以为本发明实施例中所列举的关系, 也可以为其他预 定映射关系, 只要能够实现两种配置的绑定即可。
以下通过具体实例更详细地描述本发明。
基站可以通过在每个终端的下行控制信道 PDCCH的 DCI域中增加若 干比特来指示终端的 OCC和跳频配置, 包括如下两种指示方案。 其中, 指 示比特都是 UE专用的, 即只针对收到指示比特的该终端有效。
方案一: 利用 2比特信令指示 OCC的配置, 同时将跳频配置与之绑 定; 指示比特 occ配置 相应 if兆频配置
00 所有 DMRS端口都釆用 [1 1]的 OCC加权 不使能组跳频或者序列跳频 码
01 一部分 DMRS端口釆用 [1 1]的 OCC加权 不使能组跳频或者序列跳频 码
其他 DMRS端口釆用 [1 -1]的 OCC加权码
10 所有 DMRS端口都釆用 [1 -1]的 OCC加权 不使能组跳频或者序列跳频 码
不使能 OCC功能 组跳频和序列跳频釆用小区
1 1
配置
其中 "一部分" 包括但不限于 "奇数部分" 、 "偶数部分" "前半部 分" 和 "后半部分" 中的一个。
例如, 基站可以利用 2比特的信令用以上方法指示 OCC的配置, 用户 再根据是否使能了 OCC来判断釆用何种跳频配置: 如果使能了 OCC (前 三种情况)则不使能组跳频和序列跳频, 如果没有使能 OCC (第四种情况) 则釆用小区的跳频配置
方案二: 利用 1比特信令指示跳频配置或者 OCC配置, 另一种配置和 它绑定;
Figure imgf000009_0001
方案二中,关于使能 OCC后如何进行加权,可以釆用现有的相关技术, 不在此详细描述。
比如,基站可以用 1比特信令指示是否将组跳频和序列跳频功能关闭, 如果终端需要知道 OCC的配置情况, 则可以根据跳频的配置得到: 如果关 闭了跳频功能, 则使能了 OCC功能 (不一定该用户的 DMRS传输就利用 了 OCC, 只是表明 OCC是可以用的) 。
基站可以在每个 UE的 RRC信令中增加若干比特来指示终端的跳频配 置和 OCC配置, 指示方案如下。 其中, 指示比特都是 UE专用的, 即只针 对收到指示比特的该终端有效。
方案三: 利用 1比特高层信令指示跳频配置或者 OCC配置, 另一种配 置和它绑定; 指示比特 跳频配置 0CC配置
0 不使能组跳频或者序列跳频 使能 0CC功能
1 组跳频和序列跳频釆用小区配置 不使能 0CC功能
方案三中,关于使能 OCC后如何进行加权,可以釆用现有的相关技术, 不在此详细描述。
比如,基站可以用 1比特信令指示是否将组跳频和序列跳频功能关闭, 如果终端需要知道 OCC的配置情况, 则可以根据跳频的配置得到: 如果关 闭了跳频功能, 则使能了 OCC功能 (不一定该用户的 DMRS传输就利用 了 OCC, 只是表明 OCC是可以用的) 。
终端接收到基站发送的 OCC或跳频配置指示比特后,根据指示比特所 指示的内容决定如何对各个 DMRS端口的 DMRS序列进行 OCC加权, 并 决定是否进行组跳频或序列跳频。
本发明具有广泛的适用性, 可以用于任意天线数量和天线阵列 (比如 线阵、 极化阵) , 任意双工系统 (TDD 系统或者 FDD 系统) 和任意发送 模式 (比如 SU-MIMO、 MU-MIMO、 CoMP ) 下的上行传输。 特别的, 不 同指示比特所指示的内容是可以交换的, 即可以将某个指示比特的指示内 容与同一表格中任一其他指示比特的指示内容互换, 只要指示内容不超出 所列表格的范围, 都在本专利的保护范围之内。
本发明的 OCC 配置和跳频配置的联合指示方法和装置利用下行控制 信道(PDCCH )或者 RRC信令来指示上行的 OCC配置或者跳频配置, 并 通过两者配置的绑定关系来减少信令开销。 本发明具备以下优点:
( 1 ) 灵活性强, 可以支持各种场景的 OCC 配置指示, 包括高阶 MU-MIMO;
( 2 ) 复杂度低, 可以沿用 R8现有的 CS指示, 且方法简单;
( 3 ) 用户通过这种指示方法可以知道是否使能了 OCC, 并知道是否 需要进行组跳频或序列跳频, 增加调度的灵活性;
( 4 )增大了 OCC的应用场景, 即使在组跳频 /序列跳频的小区也能使 用。
以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于 本领域的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精 神和原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明 的保护范围之内。

Claims

权利要求书
1、 一种正交覆盖码配置和跳频配置指示方法, 其特征在于, 所述方法 包括:
基站通过信令向终端指示正交覆盖码配置或跳频配置, 其中, 所述正 交覆盖码配置和所述跳频配置中的另一种配置与其绑定, 具有预定映射关 系。
2、 根据权利要求 1所述的方法, 其特征在于, 所述基站通过下行控制 信道的下行控制消息或所述终端的无线资源控制信令向终端指示正交覆盖 码配置或跳频配置。
3、 根据权利要求 2所述的方法, 其特征在于, 所述基站利用所述下行 控制消息中的 2比特信令指示正交覆盖码配置。
4、 根据权利要求 3所述的方法, 其特征在于, 所述正交覆盖码配置与 所述跳频配置的预定映射关系为:
映射关系一, 所有解调参考信号端口都釆用 [1,1]的正交覆盖码加权, 不使能组跳频或者序列跳频;
映射关系二, 一部分解调参考信号端口釆用 [1,1]的正交覆盖码加权, 其他解调参考信号端口釆用 [1,-1]的正交覆盖码加权, 不使能组跳频或序列 跳频;
映射关系三, 所有解调参考信号端口都釆用 [1,-1]的正交覆盖码加权, 不使能组跳频或序列跳频; 以及
映射关系四, 不使能正交覆盖码功能, 组跳频和序列跳频釆用小区配 置。
5、 根据权利要求 2所述的方法, 其特征在于, 所述基站利用所述下行 控制消息中的 1比特信令指示正交覆盖码配置或跳频配置。
6、 根据权利要求 5所述的方法, 其特征在于, 所述正交覆盖码配置与 所述跳频配置的预定映射关系为:
映射关系一, 不使能组跳频或序列跳频, 使能正交覆盖码功能; 映射关系二, 组跳频和序列跳频釆用小区配置, 不使能正交覆盖码功
•6 fi匕。
7、 根据权利要求 2所述的方法, 其特征在于, 所述基站利用所述无线 资源控制信令中的 1 比特高层信令指示所述正交覆盖码配置或所述跳频配 置。
8、 根据权利要求 7所述的方法, 其特征在于, 所述正交覆盖码配置与 所述跳频配置的预定映射关系为:
映射关系一, 不使能组跳频或者序列跳频, 使能正交覆盖码功能; 映射关系二, 组跳频和序列跳频釆用小区配置, 不使能正交覆盖码功
•6 fi匕。
9、 根据权利要求 1所述的方法, 其特征在于, 所述终端根据接收到的 正交覆盖码配置或跳频配置进行正交覆盖码加权并决定是否进行组跳频或 序列跳频。
10、 一种正交覆盖码配置和跳频配置指示装置, 其特征在于, 包括: 信令设置单元, 用于将正交覆盖码配置或跳频配置设置到发送至终端 的信令中, 其中, 所述正交覆盖码配置和所述跳频配置中的另一种配置与 其绑定, 具有预定映射关系; 以及
信令发送单元, 用于将设置后的信令发送至终端。
11、 根据权利要求 10所述的装置, 其特征在于, 所述信令设置单元在 下行控制信道的下行控制消息或无线资源控制信令中设置所述正交覆盖码 配置或所述跳频配置。
12、 根据权利要求 11所述的装置, 其特征在于, 所述信令设置单元在 所述下行控制消息中设置 2比特, 用于指示正交覆盖码配置。
13、 根据权利要求 12所述的装置, 其特征在于, 所述正交覆盖码配置 与所述跳频配置的预定映射关系为:
映射关系一, 所有解调参考信号解调参考信号端口都釆用 [1,1]的正交 覆盖码正交覆盖码加权, 不使能组跳频或者序列跳频;
映射关系二, 一部分解调参考信号端口釆用 [1,1]的正交覆盖码加权, 其他解调参考信号端口釆用 [1,-1]的正交覆盖码加权, 不使能组跳频或序列 跳频;
映射关系三, 所有解调参考信号端口都釆用 [1,-1]的正交覆盖码加权, 不使能组跳频或序列跳频; 以及
映射关系四, 不使能正交覆盖码功能, 组跳频和序列跳频釆用小区配 置。
14、 根据权利要求 11所述的装置, 其特征在于, 所述信令设置单元在 所述下行控制消息中设置 1比特, 用于指示正交覆盖码配置或跳频配置。
15、 根据权利要求 14所述的装置, 其特征在于, 所述正交覆盖码配置 与所述跳频配置的预定映射关系为:
映射关系一, 不使能组跳频或序列跳频, 使能正交覆盖码;
映射关系二, 组跳频和序列跳频釆用小区配置, 不使能正交覆盖码。
16、 根据权利要求 11所述的装置, 其特征在于, 所述信令设置单元在 所述无线资源控制信令中设置 1 比特高层信令, 用于指示所述正交覆盖码 配置或所述跳频配置。
17、 根据权利要求 16所述的装置, 其特征在于, 所述正交覆盖码配置 与所述跳频配置的预定映射关系为:
映射关系一, 不使能组跳频或者序列跳频, 使能正交覆盖码功能; 映射关系二, 组跳频和序列跳频釆用小区配置, 不使能正交覆盖码功
•6 fi匕
18、 一种终端, 其特征在于, 包括:
信令接收单元, 用于接收设置有正交覆盖码配置或跳频配置的信令, 其中, 所述正交覆盖码配置和所述跳频配置中的另一种配置与其绑定, 具 有预定映射关系;
处理单元, 用于根据所接收到的信令中的所述正交覆盖码配置或跳频 配置决定如何进行正交覆盖码加权,并且决定是否进行组跳频或序列跳频。
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US10200141B2 (en) 2011-08-17 2019-02-05 Alcatel Lucent Interference cancellation method and apparatus for enhanced physical downlink control channel

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