WO2007128220A1 - Procédé et dispositif destinés à un relais combiné composé de plusieurs relais combinés stations-relais mis en oeuvre dans des réseaux de communication sans fil - Google Patents

Procédé et dispositif destinés à un relais combiné composé de plusieurs relais combinés stations-relais mis en oeuvre dans des réseaux de communication sans fil Download PDF

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Publication number
WO2007128220A1
WO2007128220A1 PCT/CN2007/001419 CN2007001419W WO2007128220A1 WO 2007128220 A1 WO2007128220 A1 WO 2007128220A1 CN 2007001419 W CN2007001419 W CN 2007001419W WO 2007128220 A1 WO2007128220 A1 WO 2007128220A1
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WIPO (PCT)
Prior art keywords
signal
channel processing
relay
network node
base station
Prior art date
Application number
PCT/CN2007/001419
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English (en)
French (fr)
Inventor
Wei Ni
Gang Shen
Shan Jin
Original Assignee
Alcatel Lucent
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Alcatel Lucent filed Critical Alcatel Lucent
Priority to US12/298,950 priority Critical patent/US8948074B2/en
Priority to EP07720992.2A priority patent/EP2017975B1/en
Publication of WO2007128220A1 publication Critical patent/WO2007128220A1/zh
Priority to KR1020087026386A priority patent/KR101468882B1/ko

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/14Relay systems
    • H04B7/15Active relay systems
    • H04B7/155Ground-based stations
    • H04B7/15592Adapting at the relay station communication parameters for supporting cooperative relaying, i.e. transmission of the same data via direct - and relayed path
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/14Relay systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/24Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2603Arrangements for wireless physical layer control
    • H04B7/2606Arrangements for base station coverage control, e.g. by using relays in tunnels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • H04W88/04Terminal devices adapted for relaying to or from another terminal or user

Definitions

  • the present invention relates to a wireless communication network, and more particularly to a relay device, a base station, and a method thereof for implementing joint relaying of multiple relay devices in a wireless communication network.
  • Joint relay as an emerging technology in the field of wireless communications, the basic idea is to utilize the diversity effect through independent channels.
  • a source node broadcasts a signal that needs to be transmitted, and a part of a relay device deployed in the network can receive the signal, and then processes and forwards the signal.
  • a multi-hop relay network The signals forwarded by the relay device will reach the relay device located at the next hop, and the relay device processes and forwards the signal until the signal reaches the destination (sink).
  • the present invention has been made to solve the above problems in the prior art.
  • a method for joint relaying of multiple relay devices in a relay device of a wireless communication network comprising the steps of: receiving a signal from a higher level network node; The operation indication information of the base station processes the received signal by using a specific codec manner; and sends the processed signal to the next-level network node.
  • a relay apparatus for joint relaying of multiple relay apparatuses in a wireless communication network, comprising a receiving apparatus for receiving a signal from a node of a higher level network; a signal processing apparatus, configured to process the received signal by using a specific codec manner according to operation indication information from the base station; and a sending apparatus, configured to send the processed signal to a next-level network node .
  • a method for implementing joint relay of multiple relays based on virtual multiple input in a relay device of a wireless communication network comprising the steps of: receiving a signal from a higher-level network node; performing a channel processing operation on the received signal in a specific channel processing operation manner to generate a signal processed by the channel processing operation; transmitting the signal of the channel processing operation to a next level Network node.
  • a relay apparatus for implementing multi-relay apparatus joint relay based on virtual multiple input in a wireless communication network, comprising a receiving apparatus for receiving a network from a higher level a signal of a node; a signal processing device for performing a channel processing operation on the received signal by a specific channel processing operation to generate a signal subjected to channel processing operation; and a transmitting device for transmitting the channel processed The signal of the operation is given to the next level network node.
  • a method for assisting a multi-relay device joint relay based on a virtual multiple input multiple in a base station of a wireless communication network comprising the steps of: receiving a network node from a higher level Signaling: performing channel processing reverse operation on the signal from the upper-level network node to generate a signal sequence that is inversely operated by channel processing.
  • a base station for assisting a multi-relay device joint relay based on a virtual multiple access multiple in a wireless communication network including a receiving device for receiving a node from a higher-level network a channel processing reverse operation device for performing channel processing reverse operation on the signal from the upper-level network node to generate a signal sequence for channel reverse processing operation.
  • spatial diversity or spatial multiplexing gain can be obtained by employing spatial diversity or spatial multiplexing.
  • FIG. 1 is a topology diagram of a multi-relay device network according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of an uplink of a joint relay of two relay devices according to an embodiment of the present invention
  • FIG. 3 is a flow chart of a method for implementing joint relaying of multiple relay devices in a relay device of a wireless network according to an embodiment of the present invention
  • FIG. 4 is a block diagram of a relay device for implementing joint relaying of multiple relay devices in a wireless network according to an embodiment of the present invention
  • FIG. 5 is a flowchart of a method for implementing joint relay of multiple relay devices based on virtual multiple input in a relay device of a wireless communication network according to an embodiment of the present invention
  • FIG. 6 is a virtual-based network in a wireless communication network in accordance with an embodiment of the present invention.
  • FIG. 7 is a flowchart of a method for supporting a multi-relay device joint relay based on virtual multiple input in a base station of a wireless communication network according to an embodiment of the present invention
  • FIG. 8 is a block diagram of a base station supporting multi-relay device joint relay based on virtual multiple input in a wireless communication network according to an embodiment of the present invention
  • FIG. 9 is a schematic diagram of an uplink of a multi-relay network using spatial multiplexing according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of an uplink of a multi-relay network employing spatial diversity according to an embodiment of the present invention
  • FIG. 11 is a block diagram of a device for processing spatial multiplexing based multiplex signals from a plurality of relay devices in accordance with an embodiment of the present invention
  • Figure 12 is a block diagram of an apparatus for processing spatial diversity based multiplex signals from a plurality of relay devices in accordance with an embodiment of the present invention. detailed description
  • FIG. 1 is a topological diagram of a multi-relay device network in accordance with an embodiment of the present invention.
  • two mobile stations MSS1, MSS2, three relay devices RS1, RS2, S3 and one base station BS are shown.
  • RS1 and RS2 serve MSS1, while RS2 and RS3 serve MSS2 to implement joint relay.
  • the role of the relay is similar to the remote antenna of the base station or subscriber station.
  • the MSS1 in the upper part of Figure 1 sends a signal to a group of relay devices RS1, RS2, after the group of relay devices undergo corresponding processing (for example, space-time coded STC or space-frequency coded SFC) , the processed signals are sent separately.
  • processing for example, space-time coded STC or space-frequency coded SFC
  • the traditional STC/SFC is a traditional single-relay space-time (frequency) coded transmission method.
  • RS1 independently assumes the relay task for signals from MSS1.
  • MSS1 represented by [XI, X2]
  • RS1 is encoded to generate a new signal sequence (represented by [ ⁇ 2,, - ⁇ ]) and it is combined with another signal (such as The original signal [Xl, X2] is forwarded together in the next hop (for example, forwarded to the BS).
  • signals from one source can be separately processed and forwarded by two or more relay devices.
  • the MSS2 in the lower part of Figure 1 sends the original signal to a group of relay devices RS2, RS3 serving it. If a single relay scheme is adopted, it may be The base station determines which relay device performs the relay according to the wireless channel related parameters (such as ranging information), and then the selected relay device performs processing and then forwards by using the foregoing signal processing manner.
  • the wireless channel related parameters such as ranging information
  • the two relay devices respectively process and forward the received signal.
  • RS3 forwards the original signal [ ⁇ 1, ⁇ 2] to the base station at the next stage.
  • the RS2 processes the signal to generate a new signal sequence [ ⁇ 2,, - ⁇ ] and sends it to the base station.
  • FIG. 2 is a schematic diagram of an uplink of a joint relay of two relay apparatuses according to an embodiment of the present invention.
  • a mobile station SS transmits original data [ ⁇ 1, ⁇ 2] to two relay devices RS1 and RS2 for which joint relay is provided, and RS1 and RS2 respectively process the original data, thereby generating a signal sequence [ ⁇ 1, ⁇ 2,] and [ ⁇ 2, - ⁇ ], and in the next hop are sent to the network node at the next level (base station, BS as shown).
  • the signal received by the base station is expressed as [Yl, ⁇ 2], Yl, ⁇ 2, and the expression is as follows:
  • h, and h 2 are channel parameters corresponding to RSI and RS2, respectively. According to the above formula, the following expression can be easily obtained:
  • the power control of each relay device can be performed by the base station (the specific implementation is similar to the power control for the mobile station), so that the signals from different RSs are at the same power.
  • the level is then received by the base station.
  • FIG. 3 is a flow chart of a method for implementing joint relaying of multiple relays in a relay device of a wireless network, in accordance with an embodiment of the present invention.
  • step S101 the relay device receives from the upper level The signal of the network node.
  • the upper-level network node may be a mobile station, a base station or multiple relay devices, and for different upper-level network nodes, the operation of the incoming signal by the relay device may be different. Therefore, it is necessary to proceed to step S102.
  • the relay device determines the upper-level network node according to the operation indication information from the base station (for example, the MAP (mapping) information including the network topology and the signal processing mode adopted by each relay device) (for example, the type of the upper-level network node is known by the MAP information, and the signal processing mode of the upper-level network node is also known correspondingly.
  • the subsequent processing of the signal by the relay device is different from the case where the upper-level network node is a mobile station or a base station.
  • step S103 the first coding mode of the received signal is adopted according to the operation indication information from the base station.
  • the corresponding first decoding mode decodes the signal (the decoding mode can be known by the operation indication information from the base station) to generate a decoded signal sequence, and proceeds to step S104;
  • step S104 When the result of the determination is that the upper-level network node is a mobile station or a base station, generally, the signal is the original signal, therefore, directly proceeds to step S104;
  • step S104 the relay device uses the specific second coding mode to decode the signal sequence decoded by the first decoding mode in step S103 according to the operation indication information from the base station (including the information indicating the coding mode to be used, etc.) or The original signal from the base station or the mobile station is encoded to generate an encoded signal sequence, and proceeds to step S105;
  • step S105 the relay device sends the encoded signal to the next-level network node, and the relay device has learned the type of the next-level network node from the operation indication information sent by the base station and the specific The coding mode, therefore, even if the next-level network node is a mobile station, the encoded signal can still be successfully received and recognized at the receiving end.
  • the relay device includes a receiving device 201, a determining device 202, an information processing device 203, and a transmitting device 204.
  • the information processing device 203 further includes a decoding device 2031 and an encoding device 2032.
  • the receiving device 201 receives a signal from a higher level network node.
  • the upper-level network node may be a mobile station, a base station or multiple relay devices, and for different upper-level network nodes, the relay device may operate differently on incoming signals. Therefore, the receiving device 201 needs to transmit the signal according to the determination result of the determining device 202. Give the corresponding device;
  • the determining device 202 determines the upper-level network node of the relay device according to the operation indication information from the base station (for example, the MAP information including the network topology and the signal processing manner adopted by each relay device).
  • the MAP information knows the type of the upper-level network node, and also knows the signal processing mode of the upper-level network node. For the case where the upper-level network node is a plurality of relay devices, the subsequent processing of the signal by the relay device is different from the case where the upper-level network node is a mobile station or a base station;
  • the receiving device 201 transmits the received signal to the decoding device 2031;
  • the decoding device 2031 decodes the signal according to the operation indication information from the base station by using a first decoding manner corresponding to the first coding mode of the received signal (the decoding mode may be performed by the base station
  • the operation indication information is known;), to generate a decoded signal sequence, and the decoded signal sequence is passed to the encoding device 2032;
  • the receiving device 201 directly transmits the received signal to the above-mentioned encoding device 2032;
  • the encoding device 2032 performs a signal sequence decoded by the first 'decoding method in the decoding device 2031 or from the base station according to the operation indication information from the base station (including information indicating the encoding mode to be used, etc.) by using a specific second encoding method. Or the original signal of the mobile station is encoded to generate an encoded signal sequence, and the encoded signal sequence is transmitted to the transmitting device 204;
  • the transmitting device 204 sends the encoded signal to the next-level network node. Since the relay device has learned the type of the next-level network node and the specific coding mode to be adopted, the operation indication information sent by the base station is Even if the next-level network node is a mobile station, the encoded signal can still be successfully received and recognized at the receiving end.
  • FIG. 5 is a flow chart of a method for implementing multi-relay device joint relay based on virtual multiple input in a relay device of a wireless communication network according to an embodiment of the present invention.
  • step S301 the relay device receives a signal from a higher-level network node.
  • the upper-level network node may be a mobile station, a base station or multiple relay devices, and for different upper-level network nodes, the relay device may operate differently on incoming signals. Therefore, it is necessary to proceed to step S302.
  • the relay device determines the operation instruction information (for example, the MAP information including the network topology and the signal processing mode adopted by each relay device) from the base station.
  • the upper-level network node for example, the type of the upper-level network node is known by the MAP information, and the signal processing manner of the upper-level network node is also correspondingly known, such as the channel processing operation mode, including spatial diversity and spatial multiplexing. Forward and reverse operation).
  • the subsequent processing of the signal by the relay device is different from the case where the upper-level network node is a mobile station or a base station.
  • step S303 When the determination result is that the upper-level network node includes multiple relay devices, the process proceeds to step S303; in step S303, according to the indication information from the base station, the first channel processing with the received signal is adopted.
  • the first channel processing reverse operation mode corresponding to the operation mode performs channel processing reverse operation on the signal (the channel processing mode may be known by the indication information from the base station) to generate a signal sequence that is reversely operated by channel processing. Going to step S304;
  • step S304 When the result of the determination is that the upper-level network node is a mobile station or a base station, generally, the signal is the original signal, therefore, directly proceeds to step S304;
  • step S304 the relay device processes the forward operation mode by using a specific second channel according to the operation indication information from the base station (including information indicating the channel processing operation mode that should be adopted), and the first channel is passed in step S303. Processing the signal sequence of the reverse operation mode or the original signal from the base station or the mobile station for channel processing forward operation to generate a signal sequence for channel processing forward operation, and proceeds to step S305;
  • step S305 the relay device sends the signal after the channel processing operation to the next-level network node, because the relay device has learned the type of the next-level network node from the operation indication information sent by the base station, and should adopt The specific channel operation processing mode, therefore, even if the next-level network node is a mobile station, the encoded signal can still be successfully received and recognized at the receiving end.
  • FIG. 6 is a block diagram of a relay device for implementing multi-relay device joint relay based on virtual multiple input in a wireless communication network according to an embodiment of the present invention.
  • the relay device comprises a receiving device 401, a determining device 402, a signal processing device 403 and a transmitting device 404.
  • the signal processing device 403 further comprises a channel processing reverse operating device 4031, a channel processing forward operation Device 4032.
  • the receiving device 401 receives a signal from a higher level network node.
  • the upper-level network node may be a mobile station, a base station or multiple relay devices, and for different upper-level network nodes, the relay device may operate differently on incoming signals. Therefore, the receiving device 401 needs to transmit the signal to the corresponding device according to the determination result of the determining device 402;
  • the determining device 402 determines the upper-level network node of the relay device according to the operation indication information from the base station (for example, the MAP information including the network topology and the signal processing manner adopted by each relay device).
  • the MAP information knows the type of the upper-level network node, and also knows the channel processing operation mode of the upper-level network node:). For the case where the upper-level network node is a plurality of relay devices, the subsequent processing of the signal by the relay device is different from the case where the upper-level network node is a mobile station or a base station;
  • the receiving device 401 transmits the received signal to the channel processing reverse operation device 4031;
  • the channel processing reverse operation device 4031 performs channel processing on the signal by using a first channel processing reverse operation mode corresponding to the first channel processing forward operation mode of the received signal according to the indication information from the base station.
  • the reverse operation (the channel processing operation mode can be known by the indication information from the base station) to generate a signal sequence for channel processing reverse operation, and the signal sequence is transmitted to a channel processing forward operation device 4032;
  • the signal is the original signal, and therefore, the receiving device 401 directly transmits the received signal to the channel processing forward operating device 4032.
  • the channel processing forward operating device 4032 adopts a specific second channel processing forward operation pair according to the indication information from the base station (including information indicating the channel processing operation mode that should be adopted), and the passage in the channel processing reverse operation device 4031.
  • a channel processing reverse signal mode or a raw signal from a base station or a mobile station performs channel processing forward operation to generate a signal sequence for channel processing forward operation, and transmits the signal sequence to the transmitting device 404;
  • the sending device 404 sends the signal after the channel processing operation to the next-level network node.
  • the relay device Since the relay device has learned the type of the next-level network node and the specific coding mode to be adopted from the indication information sent by the base station, Even if the next-level network node is a mobile station, the encoded signal can still be successfully received and recognized at the receiving end.
  • FIG. 7 is a flow chart of a method for supporting multi-relay device joint relay based on virtual multiple input in a base station of a wireless communication network according to an embodiment of the present invention.
  • step S501 the base station receives a signal from a higher-level network node.
  • the upper-level network node is a plurality of relays. Device
  • step S502 the signal from the upper-level network node is reversely operated according to the channel processing corresponding to the channel processing forward operation mode adopted by the upper-level network node.
  • FIG. 8 is a block diagram of a base station supporting multi-relay device joint relay based on virtual multiple input in a wireless communication network according to an embodiment of the present invention.
  • the base station includes a receiving device 601, configured to receive signals from a higher-level network node (a network topology structure and a technical problem of primary interest to the present invention, the upper-level network node being a plurality of relay devices), and The received signal is passed to a channel processing reverse operation device 602;
  • a higher-level network node a network topology structure and a technical problem of primary interest to the present invention, the upper-level network node being a plurality of relay devices
  • the channel processing reverse operation device 602 is configured to perform a reverse operation on the channel processing corresponding to the channel processing forward operation mode adopted by the upper-level network node for the signal from the upper-level network node.
  • Figure 9 is a schematic diagram of an uplink of a multi-relay network employing spatial multiplexing in accordance with an embodiment of the present invention.
  • the signal [X1, X2, X3] from the mobile station SS arrives at a group of relay devices responsible for its joint relay, RS1, RS2, RS3, each of which is responsible for forwarding a part of the signal from the SS.
  • RS1 is responsible for forwarding XI
  • RS2 is responsible for forwarding X2
  • RS3 is responsible for forwarding X3
  • base station, BS in the figure base station
  • FIG. 10 is a schematic diagram of an uplink of a multi-relay network employing spatial diversity according to an embodiment of the present invention.
  • the signal [X1, X2, X3] from the mobile station SS arrives at a group of relay devices responsible for its joint relay, RS1, RS2, RS3, each of which is responsible for forwarding the same length as the original signal.
  • the sequence of signals (preferably, may be a sequence of signals that are inverted by a sequence, or a sequence of original signals) may be used to obtain a diversity gain.
  • Figure 11 is a block diagram of a device for processing multiplexed signals based on spatial multiplexing from a plurality of relay devices in accordance with an embodiment of the present invention.
  • the device comprises a base station and a relay device, and after the received multiplexed signals are subjected to conventional OFDM demodulation, after a virtual multiple input and multiple output detection device, the multiple signal sequences are recombined (because they are each Part of the original signal, and then Turbo decoding, restore the original signal.
  • FIG. 12 is a block diagram of an apparatus for processing spatial diversity based multiplex signals from a plurality of relay devices in accordance with an embodiment of the present invention.
  • the device comprises a base station and a relay device, and the received multiple signals are subjected to conventional OFDM demodulation, and after a virtual multiple input and multiple detection device, the minimum likelihood ratio detection is performed, and the multiple signaling is performed.
  • the sequence of numbers will be aggregated for comparison and selection, and an optimal signal will be selected and passed to the Tuobo decoder for decoding.

Description

在无线通信网络中用于多中继站联合中继的方法及装置 技术领域
本发明涉及无线通信网络, 尤其涉及在无线通信网络中用于实现多中 继装置联合中继的中继装置、 基站及其方法。 背景技术
联合中继, 作为无线通信领域一个新兴的技术, 其基本思想是通过独 立的信道来利用分集效应。 在联合中继网络中, 源节点将其需要传输的信 号广播出去, 网络中部署的中继装置中的一部分能够接收到该信号, 接着 将其进行处理并转发, 在多跳中继网络中, 上述中继装置转发的信号将到 达位于下一跳的中继装置, 这些中继装置再对信号进行处理并转发, 直至 所述信号到达目的地 (信宿)。
作为一个崭新的领域, 目前的解决方法有限, 而且由于要对来自不同 中继的信号进行合并, 精确的同步和功率匹配是很多方法的必要条件。 这 两个要求对系统的实际实现带来很高的要求。 还有的实现方法需要特殊的 信道要求, 如信道之间的正交性, 这就使得设计和测量的困难增加, 而且 联合中继所能获得的性能提升也受限于信道条件。 发明内容
本发明正是为了解决现有技术中的上述问题而提出的。
根据本发明的第一个方面,提供了一种在无线通信网络的中继装置中 用于多中继装置联合中继的方法, 包括以下步驟: 接收来自上一级网络节 点的信号; 根据来自基站的操作指示信息, 采用特定的编解码方式对所述 接收到的信号进行处理; 将所述经过处理的信号发送给下一级网络节点。
根据本发明的第二个方面, 提供了一种在无线通信网络中用于多中继 装置联合中继的中继装置, 包括一个接收装置, 用于接收来自上一级网络节 点的信号; 一个信号处理装置, 用于根据来自基站的操作指示信息, 采用特 定的编解码方式对所述接收到的信号进行处理; 一个发送装置, 用于将所述 经过处理的信号发送给下一级网络节点。
根据本发明的第三个方面, 提供了一种在无线通信网络的中继装置中基 于虚拟多入多出来实现多中继装置联合中继的方法, 包括以下步骤: 接收来 自上一级网络节点的信号; 采用特定的信道处理操作方式对所述接收到的信 号进行信道处理操作, 以生成经信道处理操作的信号; 发送所述经信道处理 操作的信号给下一级网络节点。
根据本发明的第四个方面, 提供了一种在无线通信网络中基于虚拟多入 多出来实现多中继装置联合中继的中继装置, 包括一个接收装置, 用于接收 来自上一级网络节点的信号; 一个信号处理装置, 用于采用特定的信道处理 操作方式所述接收到的信号进行信道处理操作, 以生成经信道处理操作的信 号; 一个发送装置, 用于发送所述经信道处理操作的信号给下一级网络节点。
根据本发明的第五个方面, 提供了一种在无线通信网络的基站中基于虚 拟多入多出来辅助实现多中继装置联合中继的方法, 包括如下步骤: 接收来 自上一级网絡节点的信号; 对所述来自上一级网络节点的信号进行信道处理 逆向操作, 以生成经信道处理逆向操作的信号序列。
根据本发明的第六个方面, 提供了一种在无线通信网络中基于虚拟多入 多出来辅助实现多中继装置联合中继的基站, 包括一个接收装置, 用于接收 来自上一级网络节点的信号; 一个信道处理逆向操作装置, 用于对所述来自 上一级网络节点的信号进行信道处理逆向操作, 以生成经信道逆向处理操作 的信号序列。
采用本发明提供的方法和相应装置, 通过采用空间分集或空间复用可 以获得空间分集或空间复用增益。 附图说明
下面结合附图对本发明作进一步描述:
图 1为根据本发明的一个具体实施方式的多中继装置网络拓朴图; 图 2为根据本发明的一个具体实施方式的 2个中继装置联合中继的上 行链路示意图;
图 3为根据本发明的一个具体实施方式的在无线网络的中继装置中用 于实现多中继装置联合中继的方法流程图;
图 4为根据本发明的一个具体实施方式的在无线网络中用于实现多中 继装置联合中继的中继装置的框图;
图 5为根据本发明的一个具体实施方式的在无线通信网络的中继装置 中基于虚拟多入多出来实现多中继装置联合中继的方法流程图;
图 6为根据本发明的一个具体实施方式的在无线通信网络中基于虚拟 多入多出来实现多中继装置联合中继的中继装置框图;
图 7为根据本发明的一个具体实施方式的在无线通信网络的基站中基于 虛拟多入多出来支持多中继装置联合中继的方法流程图;
图 8为根据本发明的一个具体实施方式的在无线通信网络中基于虚拟多 入多出来支持多中继装置联合中继的基站框图;
图 9为 居本发明的一个具体实施方式的采用空间复用方式的多中继网 络的上行链路示意图;
图 10 为才艮据本发明的一个具体实施方式的采用空间分集方式的多中继 网络的上行链路示意图;
图 11 为根据本发明的一个具体实施方式的对来自多个中继装置的基于 空间复用的多路信号进行处理的装置框图;
图 12为^^据本发明的一个具体实施方式的对来自多个中继装置的 基于空间分集的多路信号进行处理的装置框图。 具体实施方式
下面结合附图对本发明进行详述。
图 1为根据本发明的一个具体实施方式的多中继装置网络拓朴图。 其中, 示出了 2个移动站 MSS1、 MSS2, 3个中继装置 RS1、 RS2、 S3以及一个基站 BS。RS1和 RS2为 MSS1服务,而 RS2和 RS3为 MSS2 服务, 实现联合中继。 中继装置的作用类似于基站或用户站的远程天线。 例如, 在上行链路中, 处于图 1 上部的 MSS1 发送信号到一组中继装置 RS1、 RS2, 该组中继装置经过相应的处理 (譬如, 进行空时编码 STC或 空频编码 SFC )后, 将处理过的信号分别发送。
如图所示, 其中传统的 STC/SFC 为传统的单中继空时 (频) 编码传 输方式。 RS1 独立承担对来自 MSS1 的信号的中继任务。 于是, 当来自 MSS1的信号 (用 [XI , X2]表示)到达 RS1后, RS1经过编码, 产生新的 信号序列 (用 [Χ2,, -ΧΓ]表示), 并将其与另一路信号(如, 原始信号 [Xl, X2] ) 一同在下一跳中转发 (譬如, 转发给 BS )。
而当采用多中继装置联合中继时, 根据本发明的方案, 可以由 2个或 多个中继装置对来自一个信源的信号进行分别处理和转发。 不失一般性, 以下内容均以上行链路为例。 如图 1中处于下部的 MSS2发送原始信号到 为其服务的一组中继装置 RS2、 RS3 , 如果采用单中继的方案, 则可能由 基站来根据无线信道相关参数(如测距信息)来确定由哪个中继装置来执 行中继, 进而由该被选中的中继装置采用前述的信号处理方式进行处理后 转发。 而在多中继装置联合中继的方案中, 来自该 MSS2的原始信号 (用 [Y1,Y2]表示) 到达 RS2和 RS3后, 两个中继装置分别对接收到的信号进 行处理并转发,在本发明的一个优选实施例中, RS3转发原始信号 [Υ1,Υ2] 给处于下一级的基站。 而 RS2对信号经过处理, 产生新的信号序列 [Υ2,, -Υ ]并将其发送给基站。
图 2为根据本发明的一个具体实施方式的 2个中继装置联合中继的上 行链路示意图。 其中, 一个移动站 SS发送原始数据 [Χ1,Χ2]到负责为其提 供联合中继的两个中继装置 RS1和 RS2, RS1和 RS2分别对原始数据进 行处理,进而各生成信号序列 [Χ1,Χ2,]和 [Χ2, -ΧΓ], 并在下一跳中发送给 位于下一级的网络节点 (如图所示的基站, BS)。 基站接收到的信号表示 为 [Yl, Υ2], Yl, Υ2的表达式如下:
y I ― h 1 JC 1 + h 2 ·^ 2 + l
y 2 二 2 ― 2 Χ I + η 2
其中, h、 和 h2为分别对应于 RSI和 RS2的信道参数。 根据上式可以 很容易地得到如下表达式:
_ ;(yl -nl)-h2(y; -n2) +
l _ -"" ι¾Μ ι22― ~ 1 12+1 12 "~ 容易看出, 只要 ^ 和 /72的差别不是特别大, 系统就能够获得分集增 益。 如果出现相反的情况, 譬如| 1〉>1 1,则 〜 l i2
,意味着联合中继的效果与采用传统的单中继方案的效果
Figure imgf000006_0001
几乎相同。 优选地, 为了在这种情况下仍能获得分集增益, 可以由基站对各 个中继装置进行功率控制(其具体实现类似于对移动站的功率控制), 以使来 自不同 RS的信号处于同一功率等级, 再由基站接收。
图 3为根据本发明的一个具体实施方式的在无线网络的中继装置中用 于实现多中继装置联合中继的方法流程图。
该方法起始于步骤 S101, 在步骤 S101 中, 中继装置接收来自上一级 网络节点的信号。 根据可能的网络拓朴结构, 其上一級网络节点可能是一 个移动站、 一个基站或多个中继装置, 而对于不同的上一级网络节点, 中 继装置对到来的信号的操作可能不同, 因此, 需要进到步驟 S102。
在步骤 S102 中, 中继装置根据来自基站的操作指示信息 (如, 包括 网络拓朴结构和各中继装置所采用的信号处理方式的 MAP (映射)信息), 确定其上一级网络节点 (譬如, 由 MAP信息知晓其上一级网络节点的类 型, 也对应地知道了该上一级网络节点的信号处理方式)。 对于上一级网 络节点为多个中继装置的情况, 该中继装置对信号的后续处理不同于上一 级网络节点为一个移动站或基站的情况。
当确定结果为上一级网络节点包括多个中继装置时, 进到步骤 S103; 在步骤 S103 中, 根据所述来自基站的操作指示信息, 采用与所述接 收到的信号的第一编码方式相对应的第一解码方式对所述信号进行解码 (该解码方式可以由所述来自基站的操作指示信息得知), 以生成经解码 的信号序列, 进到步驟 S104;
当确定结果为上一级网络节点为一个移动站或一个基站时, 一般地, 该信号即为原始信号, 因此, 直接进到步驟 S104;
在步骤 S104中, 中继装置根据来自基站的操作指示信息(包括指示其 应采用的编码方式等信息),采用特定的第二编码方式对在步骤 S103中经过 第一解码方式解码的信号序列或来自基站或移动站的原始信号进行编码, 以生成经编码的信号序列, 并进到步骤 S105;
在步骤 S105中, 中继装置将经编码后的信号发送给下一级网络节点, 由 于中继装置已经从基站发送的操作指示信息中得知了下一级网络节点的类型 以及应采用的具体编码方式, 因此即使所述下一级网络节点为一个移动站, 编码后发送的信号仍能在接收端被成功接收和识别。
图 4为根据本发明的一个具体实施方式的在无线网络中用于实现多中 继装置联合中继的中继装置的框图。 该中继装置包括一个接收装置 201、 一个确定装置 202、 一个信息处理装置 203 以及一个发送装置 204, 优选 地, 该信息处理装置 203还包括一个解码装置 2031、 一个编码装置 2032。
接收装置 201接收到来自上一级网络节点的信号。 根据可能的网络拓 朴结构,其上一级网络节点可能是一个移动站、一个基站或多个中继装置, 而对于不同的上一级网络节点, 中继装置对到来的信号的操作可能不同, 因此, 接收装置 201需要根据确定装置 202的确定结果来将所述信号传递 给相应的装置;
该确定装置 202根据来自基站的操作指示信息(如, 包括网络拓朴结 构和各中继装置所采用的信号处理方式的 MAP信息),确定该中继装置的 上一级网络节点 (譬如, 由 MAP信息知晓其上一级网絡节点的类型, 也 对应地知道了该上一级网络节点的信号处理方式)。 对于上一级网络节点 为多个中继装置的情况, 该中继装置对信号的后续处理不同于上一级网络 节点为一个移动站或基站的情况;
当确定结果为上一级网络节点包括多个中继装置时, 接收装置 201将 其接收到的信号传递给解码装置 2031 ;
该解码装置 2031 根据所述来自基站的操作指示信息, 采用与所述接 收到的信号的第一编码方式相对应的第一解码方式对所述信号进行解码 (该解码方式可以由所述来自基站的操作指示信息得知;), 以生成经解码 的信号序列, 并将经解码的信号序列传递给编码装置 2032;
当确定结果为上一级网络节点为一个移动站或一个基站时, 一般地, 该信号即为原始信号, 因此, 接收装置 201直接将其接收到的信号传递给 上述编码装置 2032;
该编码装置 2032根据来自基站的操作指示信息(包括指示其应采用的 编码方式等信息),采用特定的第二编码方式对在解码装置 2031中经过第一' 解码方式解码的信号序列或来自基站或移动站的原始信号进行编码, 以生 成经编码的信号序列, 并将经编码的信号序列传递给发送装置 204;
该发送装置 204将经编码后的信号发送给下一级网络节点, 由于中继装 置已经从基站发送的操作指示信息中得知了下一级网络节点的类型以及应采 用的具体编码方式, 因此即使所述下一级网络节点为一个移动站, 编码后发 送的信号仍能在接收端被成功接收和识别。
图 5为根据本发明的一个具体实施方式的在无线通信网络的中继装置中 基于虚拟多入多出来实现多中继装置联合中继的方法流程图。
该方法起始于步骤 S301, 在步骤 S301 中, 中继装置接收来自上一级 网络节点的信号。 根据可能的网络拓朴结构, 其上一级网络节点可能是一 个移动站、 一个基站或多个中继装置, 而对于不同的上一级网络节点, 中 继装置对到来的信号的操作可能不同, 因此, 需要进到步骤 S302。
在步骤 S302 中, 中继装置根据来自基站的操作指示信息 (如, 包括 网络拓朴结构和各中继装置所采用的信号处理方式的 MAP信息),确定其 上一级网络节点 (譬如, 由 MAP信息知晓其上一级网络节点的类型, 也 对应地知道了该上一级网络节点的信号处理方式, 譬如信道处理操作方 式, 包括空间分集和空间复用的正向和逆向操作方式)。 对于上一级网络 节点为多个中继装置的情况, 该中继装置对信号的后续处理不同于上一级 网络节点为一个移动站或基站的情况。
当确定结果为上一级网络节点包括多个中继装置时, 进到步骤 S303; 在步骤 S303 中, 根据所述来自基站的指示信息, 采用与所述接收到 的信号的第一信道处理正向操作方式相对应的第一信道处理逆向操作方 式对所述信号进行信道处理逆向操作(该信道处理方式可以由所述来自基 站的指示信息得知), 以生成经信道处理逆向操作的信号序列, 进到步骤 S304;
当确定结果为上一級网络节点为一个移动站或一个基站时, 一般地, 该信号即为原始信号, 因此, 直接进到步骤 S304;
在步骤 S304中, 中继装置根据来自基站的操作指示信息 (包括指示其 应采用的信道处理操作方式等信息),采用特定的第二信道处理正向操作方式 对在步骤 S303 中经过第一信道处理逆向操作方式作用的信号序列或来自 基站或移动站的原始信号进行信道处理正向操作,以生成经信道处理正向操 作的信号序列, 并进到步骤 S305;
在步骤 S305中,中继装置将经信道处理操作后的信号发送给下一级网络 节点, 由于中继装置已经从基站发送的操作指示信息中得知了下一级网络节 点的类型以及应采用的具体信道操作处理方式, 因此即使所述下一级网络节 点为一个移动站, 编码后发送的信号仍能在接收端被成功接收和识别。
图 6为根据本发明的一个具体实施方式的在无线通信网络中基于虚拟多 入多出来实现多中继装置联合中继的中继装置框图。
该中继装置包括一个接收装置 401、 一个确定装置 402、 一个信号处 理装置 403以及一个发送装置 404, 优选地, 该信号处理装置 403还包括 一个信道处理逆向操作装置 4031、 一个信道处理正向操作装置 4032。
接收装置 401接收到来自上一级网络节点的信号。 根据可能的网络拓 朴结构,其上一级网络节点可能是一个移动站、一个基站或多个中继装置, 而对于不同的上一级网络节点, 中继装置对到来的信号的操作可能不同, 因此, 接收装置 401需要根据确定装置 402的确定结果来将所述信号传递 给相应的装置; 该确定装置 402根据来自基站的操作指示信息(如, 包括网络拓朴结 构和各中继装置所采用的信号处理方式的 MAP信息),确定该中继装置的 上一级网络节点 (譬如, 由 MAP信息知晓其上一级网络节点的类型, 也 对应地知道了该上一级网络节点的信道处理操作方式:)。 对于上一级网络 节点为多个中继装置的情况, 该中继装置对信号的后续处理不同于上一级 网络节点为一个移动站或基站的情况;
当确定结果为上一级网络节点包括多个中继装置时, 接收装置 401将 其接收到的信号传递给信道处理逆向操作装置 4031 ;
该信道处理逆向操作装置 4031根据所述来自基站的指示信息, 采用 与所述接收到的信号的第一信道处理正向操作方式相对应的第一信道处 理逆向操作方式对所述信号进行信道处理逆向操作(该信道处理操作方式 可以由所述来自基站的指示信息得知), 以生成经信道处理逆向操作的信 号序列, 并将该信号序列传递给一信道处理正向操作装置 4032;
当确定结果为上一级网络节点为一个移动站或一个基站时, 一般地, 该信号即为原始信号, 因此, 接收装置 401直接将其接收到的信号传递给 上述信道处理正向操作装置 4032;
该信道处理正向操作装置 4032根据来自基站的指示信息(包括指示其 应采用的信道处理操作方式等信息), 采用特定的第二信道处理正向操作对 在信道处理逆向操作装置 4031 中经过第一信道处理逆向操作方式作用的 信号序列或来自基站或移动站的原始信号进行信道处理正向操作, 以生成 经信道处理正向操作的信号序列, 并将该信号序列传递给发送装置 404; 该发送装置 404将经信道处理操作后的信号发送给下一级网络节点, 由 于中继装置已经从基站发送的指示信息中得知了下一级网络节点的类型以及 应采用的具体编码方式, 因此即使所述下一级网络节点为一个移动站, 编码 后发送的信号仍能在接收端被成功接收和识别。
图 7为^^据本发明的一个具体实施方式的在无线通信网络的基站中基于 虚拟多入多出来支持多中继装置联合中继的方法流程图。
该方法起始于步骤 S501 , 在步骤 S501中, 基站接收到来自上一级 网络节点的信号 (根据网络拓朴结构和本发明主要关心的技术问题, 该上一 级网络节点为多个中继装置), 进到步骤 S502;
在步骤 S502中,对所述来自上一级网络节点的信号进行与所述上一级网 络节点采用的信道处理正向操作方式相对应的信道处理逆向操作。 图 8为根据本发明的一个具体实施方式的在无线通信网络中基于虚拟多 入多出来支持多中继装置联合中继的基站框图。
该基站包括一个接收装置 601, 用于接收来自上一级网络节点的信 号 ( 居网络拓朴结构和本发明主要关心的技术问题, 该上一级网络节点为 多个中继装置), 并将所述接收到的信号传递给一个信道处理逆向操作装置 602;
所述信道处理逆向操作装置 602用于, 对所述来自上一级网络节点的信 号进行与所述上一级网络节点采用的信道处理正向操作方式相对应的信道处 理逆向操作。
图 9为 居本发明的一个具体实施方式的采用空间复用方式的多中继网 络的上行链路示意图。
图中,来自移动站 SS的信号 [X1,X2,X3]到达负责为其进行联合中继的一 组中继装置, RS1、 RS2、 RS3, 每个中继装置负责转发来自 SS 的信号的一 部分(如, RS1负责转发 XI , RS2负责转发 X2, RS3负责转发 X3 )到下" - 级网络节点 (如图中的基站, BS ), 如此, 每个中继装置只需要用原来发送 完整原始信号所需资源的 1/3便能实现对信号的中继, 因此, 提高了系统的 吞吐量。
图 10 为 ^据本发明的一个具体实施方式的采用空间分集方式的多中继 网络的上行链路示意图。
图.中,来自移动站 SS的信号 [X1,X2,X3]到达负责为其进行联合中继的一 組中继装置, RS1、 RS2、 RS3, 每个中继装置负责转发与原始信号长度相同 的信号序列 (优选地, 可以是经过序列颠倒的信号序列, 也可以保留原始信 号的序列), 以获得分集增益。
图 11 为 ^据本发明的一个具体实施方式的对来自多个中继装置基于空 间复用的多路信号进行处理的装置框图。
其中, 该装置包括基站和中继装置, 接收到的多路信号经过常规的 OFDM解调后, 经一个虚拟多入多出检测装置后, 多路信号序列将被进行重 新组合(因其各自为原始信号的一部分),再经 Turbo解码,恢复出原始信号。
图 12为根据本发明的一个具体实施方式的对来自多个中继装置的 基于空间分集的多路信号进行处理的装置框图。
其中,该装置包括基站和中继装置,接收到的多路信号经过常规的 OFDM 解调后, 经一个虚拟多入多出检测装置后, 再经过最小似然比检测, 多路信 号序列将被集中起来进行比较和选择, 选择一个最优的信号, 传递给 Tuobo 解码器, 进行解码。
以上对本发明的具体实施例进行了描述。 需要理解的是, 本发明并不 局限于上述特定实施方式, 本领域技术人员可以在所附权利要求的范围内 做出各种变形或 ~改。

Claims

权 利 要 求
1. 一种在无线通信网络的中继装置中用于与其他多中继装置一起进行 联合中继的方法, 包括以下步骤:
a. 接收来自上一级网络节点的信号;
b. 根据来自基站的操作指示信息, 采用特定的编解码方式对所述接收 到的信号进行处理;
c 将所述经过处理的信号发送给下一级网络节点。
2. 根据权利要求 1所述的方法, 其特征在于, 所述步驟 b包括: 当所述上一级网络节点包括多个中继装置时, 执行以下操作:
- 根据所述来自基站的指示信息, 采用与所述接收到的信号的第 一编码方式相对应的第一解码方式对所述信号进行解码, 以生成经解 码的信号序列;
- 根据所述来自基站的指示信息, 采用特定的第二编码方式对所 述经解码的信号序列进行编码, 以生成经编码的信号序列。
3. 根据权利要求 1所述的方法, 其特征在于, 所述步骤 b还包括: 当所述上一级网络节点为移动站或基站时 , 执行以下操作:
- 采用与所述中继装置相对应的第二编码方式对所述接收到的信 号进行编码, 以生成经编码的信号序列。
4.根据权利要求 1-3中任一项所述的方法, 其特征在于, 所述编解码方 式包括空时编解码方式和空频编解码方式。
5.—种在无线通信网络中用于与其他多中继装置一起进行联合中继的中 继装置, 包括:
接收装置, 用于接收来自上一级网络节点的信号;
信号处理装置, 用于根据来自基站的指示信息, 采用特定的编解码方 式对所述接收到的信号进行处理;
发送装置, 用于将所述经过处理的信号发送给下一级网络节点。
6.根据权利要求 5所述的中继装置,其特征在于,还包括一个确定装置, 用于根据所述来自基站的指示信息, 确定所述中继装置的上一级网络节点的 情况及其相应编解码方式;
所述信号处理装置包括:
解码装置, 用于当所述上一级网络节点包括多个中继装置时, 据所 述来自基站的操作指示信息, 采用与所述接收到的信号的第一编码方式相对 应的第一解 方式对所述信号进行解码, 以生成经解码的信号序列;
编码装置, 用于 居所述来自基站的指示信息, 采用特定的第二编码 方式对所述经解码的信号序列进行编码, 以生成经编码的信号序列。
7. 根据权利要求 6所述的中继装置, 其特征在于,
所述编码装置还用于, 当所述上一级网络节点为移动站或基站时, 采用 特定的第二编码方式对所述接收到的信号进行编码, 以生成经编码的信号序 列。
8. 根据权利要求 5-7中任一项所述的中继装置, 其特征在于, 所述编解 码方式包括空时编解码方式和空频编解码方式。
9. 一种在无线通信网络的中继装置中基于虚拟多入多出来实现多中继 站联合中继的方法, 包括以下步骤:
d. 接收来自上一级网络节点的信号;
e. 4 据来自基站的指示信息, 采用特定的信道处理方式对所述接收到的 信号进行信道处理操作, 以生成经信道处理操作的信号序列;
f. 发送所述经信道处理操作的信号给下一级网络节点。
10.根据权利要求 9所述的方法, 其特征在于, 所述步骤 e包括, 当所述上一级网络节点包括多个中继装置时, 执行以下操作:
- 根据所述来自基站的指示信息, 采用与所述接收到的信号的第 一信道处理正向操作方式相对应的第一信道处理逆向操作方式对所述 信号进行信道处理逆向操作,以生成经信道处理逆向操作的信号序列;
- 根据所述来自基站的指示信息, 采用特定的第二信道处理正向 操作方式对所述经信道处理逆向操作的信号序列进行信道处理正向操 作, 以生成经信道处理正向操作的信号序列。
11. 根据权利要求 9所述的方法, 其特征在于, 所述步骤 e还包括, 根据来自基站的操作指示信息, 当所述上一级网络节点为移动站或基 站时, 执行以下操作:
采用与所述中继装置相对应的第二信道处理正向操作方式对所述接收 到的信号进行信道处理正向操作,以生成经信道处理正向操作的信号序列。
12. 根据权利要求 9-11 中任一项所述的方法, 其特征在于, 所述信道处 理操作方式包括空间复用方式和空间分集方式的正向和逆向操作方式。
13. 一种在无线通信网络中基于虛拟多入多出来实现多中继装置联合 中继的中继装置, 包括:
接收装置, 用于接收来自上一级网络节点的信号;
信号处理装置, 用于采用特定的信道处理操作方式对所述接收到的信号 进行信道处理操作, 以生成经信道处理操作的信号;
发送装置, 用于发送所述经信道处理操作的信号给下一级网络节点。
14.根据权利要求 13 所述的中继装置, 其特征在于, 还包括一个确定装 置, 用于根据所述来自基站的指示信息, 确定所述中继装置的上一级网络节 点及其相应信道处理操作方式;
所述信号处理装置包括:
信道处理逆向操作装置, 用于当所述上一級网络节点包括多个中继装置 时, 根据所述来自基站的指示信息, 采用与所述接收到的信号的第一信道处 理正向操作方式相对应的第一信道处理逆向操作方式对所述信号进行信道处 理逆向操作, 以生成经信道处理逆向操作的信号序列;
信道处理正向操作装置, 用于根据所述来自基站的指示信息, 采用特定 的第二信道处理正向操作方式对所述经信道处理逆向操作的信号序列进行信 道处理正向操作, 以生成经信道处理正向操作的信号序列。
15. 根据权利要求 14所述的中继装置, 其特征在于,
所述信道处理正向操作装置还用于, 当所述上一级网络节点为移动站或 基站时, 采用特定的第二信道处理正向操作方式对所述接收到的信号进行信 道处理正向操作, 以生成经信道正向处理操作的信号序列。
16.根据权利要求 13-15中任一项所述的中继装置, 其特征在于, 所述信 道处理操作方式包括空间复用方式和空间分集方式的正向和逆向操作方式。
17. 一种在无线通信网络的基站中基于虚拟多入多出来辅助实现多中继 站联合中继的方法, 包括如下步骤:
g. 接收来自上一级网络节点的信号;
h. 采用与所述接收到的信号的信道处理正向操作方式相对应的信道处 理逆向操作方式对所述信号进行信道处理逆向操作。
18. 根据权利要求 17所述的方法, 其特征在于, 所述信道处理操作方式 包括空间复用方式和空间分集方式的正向和逆向操作方式。
19. 一种在无线通信网络中基于虚拟多入多出来辅助实现多中继装置联 合中继的基站, 包括:
接收装置, 用于接收来自上一级网络节点的信号; 信道处理逆向操作装置, 用于采用与所述接收到的信号的信道处理正向 操作方式相对应的信道处理逆向操作方式对所述来自上一级网络节点的信号 进行信道处理逆向操作。
20.根据权利要求 19所述的基站, 其特征在于, 所述信道处理操作方式 包括空间复用方式和空间分集方式的正向和逆向操作方式。
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