WO2011116679A1 - 一种传输导频配置信息的方法及装置 - Google Patents

一种传输导频配置信息的方法及装置 Download PDF

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Publication number
WO2011116679A1
WO2011116679A1 PCT/CN2011/072025 CN2011072025W WO2011116679A1 WO 2011116679 A1 WO2011116679 A1 WO 2011116679A1 CN 2011072025 W CN2011072025 W CN 2011072025W WO 2011116679 A1 WO2011116679 A1 WO 2011116679A1
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WIPO (PCT)
Prior art keywords
pilot
information
pdcch
layer signaling
high layer
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PCT/CN2011/072025
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English (en)
French (fr)
Inventor
沈祖康
王立波
潘学明
张文健
Original Assignee
电信科学技术研究院
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Filing date
Publication date
Priority claimed from CN201010130985.1A external-priority patent/CN102083210B/zh
Application filed by 电信科学技术研究院 filed Critical 电信科学技术研究院
Priority to US13/583,470 priority Critical patent/US9030999B2/en
Priority to EP11758789.9A priority patent/EP2552033B1/en
Publication of WO2011116679A1 publication Critical patent/WO2011116679A1/zh

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Classifications

    • 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
    • H04L5/0091—Signaling for the administration of the divided path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0226—Channel estimation using sounding signals sounding signals per se
    • 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
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • 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
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/26—Cell enhancers or enhancement, e.g. for tunnels, building shadow
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and apparatus for transmitting pilot configuration information. Background technique
  • Demodulation of the channel is an essential part of the communication process.
  • the received pilot is typically used to demodulate the channel. Before receiving the pilot, it is necessary to know in advance the port number of the pilot and the number of ports in order to receive the pilot at the corresponding location. Pilots include common pilots (such as Cell Reference Signal (CRS)) and dedicated pilots (such as Demodulation Reference Signal (DMRS)).
  • CRS Cell Reference Signal
  • DMRS Demodulation Reference Signal
  • the number of ports of the CRS can be obtained by receiving broadcast information. All relay devices and user equipments (UEs) in the cell use the same pilot for channel demodulation. The problem is that CRS cannot be configured for a device separately.
  • the pilot is DMRS
  • the port number and the number of ports cannot be transmitted in the broadcast channel.
  • the physical downlink control channel (PDCCH) is controlled. Transfer in the message format.
  • the base station such as an evolved base station (eNB)
  • the relay device also transmits the PDCCH to the user equipment, so the relay device cannot receive the PDCCH transmitted by the base station, and thus cannot obtain the PDCCH from the PDCCH.
  • the port information is used to demodulate the relayed physical downlink control channel (R-PDCCH) and the like.
  • the scheme of the port information of the DMRS has not been effectively notified to the relay device, so that the relay device cannot receive the DMRS and perform subsequent channel demodulation. And, it is not possible to configure CRS separately for the device. Summary of the invention
  • Embodiments of the present invention provide a method and apparatus for transmitting pilot configuration information in a relay system, which are used to implement transmission of pilot configuration information to a relay device (RN).
  • RN relay device
  • a method for transmitting pilot configuration information in a relay system includes the following steps:
  • the base station generates high layer signaling carrying pilot configuration information configured for the R-PDCCH; the base station sends the high layer signaling to the relay device.
  • An apparatus for transmitting pilot configuration information in a relay system comprising:
  • a configuration module configured to generate a high-level signaling that carries a pilot configuration information configured for the R-PDCCH;
  • An interface module configured to send the high layer signaling to the relay device.
  • the base station sends the pilot configuration information configured for the R-PDCCH to the relay device by using the high layer signaling, thereby achieving the purpose of transmitting the pilot configuration information to the relay device (RN).
  • the embodiment of the invention further provides a method and a device for receiving a pilot in a relay system, which are used to implement that a relay node receives a pilot according to pilot configuration information and performs channel demodulation.
  • a method of receiving pilots in a relay system includes the following steps:
  • the relay device receives the high layer signaling sent by the base station, and parses the high layer signaling to obtain pilot configuration information configured for the R-PDCCH.
  • the relay device receives the pilot according to the pilot configuration information configured for the R-PDCCH.
  • a device for receiving pilots in a relay system comprising:
  • a signaling interface module configured to receive high-level signaling sent by the base station, and parse the high-layer signaling, to obtain pilot configuration information configured for the R-PDCCH;
  • a pilot interface module configured to receive a pilot according to pilot configuration information configured for the R-PDCCH.
  • the relay device receives the pilot configuration information configured by the base station and is configured by the high-layer signaling, and the relay device may receive the pilot according to the pilot configuration information and perform channel demodulation on the R-PDCCH.
  • the pilot configuration information includes one or more of pilot type information, pilot port number information, and pilot port number information, and may also include other pilot related information. Pilot type The information includes public pilot type information or dedicated pilot type information. Therefore, the embodiment of the present invention solves the problem that the port information of the DMRS cannot be notified to the relay device, and solves the problem that the CRS cannot be separately configured for the device.
  • FIG. 1 is a schematic structural diagram of a relay system according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of an apparatus for transmitting pilot configuration information in a relay system according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of an apparatus for receiving a pilot in a relay system according to an embodiment of the present invention
  • FIG. 4 is a schematic flowchart showing a method for implementing a method of transmitting a pilot configuration information in a process of transmitting a pilot configuration information according to an embodiment of the present invention
  • FIG. 5 is a schematic flowchart showing a detailed implementation method of a base station side in transmitting pilot configuration information according to an embodiment of the present invention
  • FIG. 6 is a schematic flowchart of a method for implementing a method on a relay device side in a process of transmitting pilot configuration information according to an embodiment of the present invention
  • FIG. 7 is a schematic flowchart of a detailed method for implementing a method on a relay device in a process of transmitting pilot configuration information according to an embodiment of the present invention. detailed description
  • the base station sends the pilot configuration information configured for the R-PDCCH to the relay device by using the high layer signaling, so that the relay device can receive the pilot according to the pilot configuration information and perform channel demodulation on the R-PDCCH.
  • the pilot configuration information includes at least one of pilot type information and pilot port information, and may also include other pilot related information.
  • the pilot type information includes common pilot type information or dedicated pilot type information.
  • the pilot port information includes at least one of pilot port number information and pilot port number information configured for the R-PDCCH.
  • the base station transmits the high layer signaling to the relay device through a broadcast channel or a dedicated channel. High-level signaling such as Radio Resource Control (RRC) signaling. Therefore, the embodiment of the present invention solves the problem that the port information of the DMRS cannot be notified to the relay device. The problem solves the problem that the CRS cannot be configured separately for the device.
  • RRC Radio Resource Control
  • the relay system in this embodiment includes a base station and a relay device.
  • the base station directly interacts with the relay device and the user equipment, and can also directly connect with the core network (CN).
  • the base station is configured to generate high-level signaling that carries pilot type information configured for the R-PDCCH, and pilot port number information and/or pilot port number information configured for the R-PDCCH, and sends the high layer signaling Give the relay device.
  • the relay device is configured to forward the message between the user equipment and the base station, receive the high layer signaling sent by the base station, and parse the high layer signaling to obtain pilot type information configured for the R-PDCCH, and a guide configured for the R-PDCCH.
  • the frequency port number information and/or the pilot port number information, and the pilot is received according to the pilot type information configured for the R-PDCCH, and the pilot port number information and/or the pilot port number information configured for the R-PDCCH.
  • the pilot type information has multiple specific manifestations, such as implemented by type identifiers, and different types of identifiers represent common pilots and dedicated pilots. Or, the type of the pilot indicator is used to indicate the dedicated pilot.
  • the high layer signaling carries the type identifier, the pilot configuration information of the dedicated pilot is indicated. If the type identifier is not carried, the pilot configuration information of the common pilot is indicated. There are other forms that can be listed here.
  • the high layer signaling may carry the information of the pilot port number and/or the number of pilot ports.
  • the high-layer signaling may carry only the pilot port number information
  • the base station carries all the port numbers configured for the R-PDCCH in the high-layer signaling, and the scheme may configure the discontinuous port number for the R-PDCCH.
  • the high-level signaling may carry only the number of pilot ports, and the number of pilot ports may be a specific digital or digital code.
  • the scheme needs to notify the relay device to start the pilot port number in advance, and may notify the high-level signaling.
  • the relay device may be configured by the operation and maintenance entity, and then the base station notifies the relay device of the number of pilot ports by using high layer signaling, and the relay device determines the pilot according to the initial pilot port number and the number of pilot port information.
  • the port number such as the starting pilot port number is 7, and the pilot port number information is 2, then the pilot port numbers configured for the R-PDCCH are 7 and 8.
  • the solution is mainly applicable to configuring consecutive pilot port numbers, and the signaling length can be saved relative to the manner in which only the pilot port number information is carried.
  • the pilot port number The information may be a starting pilot port number, and the relay device determines the pilot port number according to the starting pilot port number and the number of pilot port numbers.
  • the method may not need to be fixed in a manner of carrying only the number of pilot port numbers. Configure the starting pilot port number. You can specify a different starting pilot port number for each configuration.
  • pilot port number information when the configured pilot port number is large, signaling resources are saved more than the method of carrying only the pilot port number information.
  • the correspondence between the initial pilot port number and the pilot type information is pre-configured, for example, the starting pilot port number of the common pilot is 0, and the starting pilot port number of the dedicated pilot is 7, then it can be at the upper layer.
  • the pilot type information is omitted in the signaling, and is implicitly represented by the pilot port number information. If the number of the fixed configuration pilot port information and the correspondence between the initial pilot port number and the pilot type information are pre-configured, the pilot type information may be notified only by the high layer signaling, and the pilot port number information and the guide may be implicitly indicated. Frequency port number information.
  • the high-level signaling may only carry the pilot type information, or only the pilot port number information, or the pilot type information and the number of pilot ports, or the pilot port number information and the number of pilot ports. Or carry pilot type information, pilot port number information, and pilot port number information.
  • the apparatus for transmitting pilot configuration information in a relay system in this embodiment includes: a configuration module 201 and an interface module 202.
  • the base station may be specifically an evolved base station (eNB) or the like in a Long Term Evolution (LTE) system.
  • the device may specifically be a base station.
  • the configuration module 201 is configured to generate high layer signaling carrying pilot type information configured for the R-PDCCH, and pilot port number information and/or pilot port number information configured for the R-PDCCH.
  • the pilot type information includes common pilot type information or dedicated pilot type information.
  • the interface module 202 is configured to send the high layer signaling to the relay device.
  • the interface module 202 is further configured to transmit, according to the pilot type information configured for the R-PDCCH, the R-PDCCH in the R-PDCCH according to the pilot port number information and/or the number of pilot port information configured for the R-PDCCH. Configured pilots.
  • the R-PDCCH can be configured in multiple Physical Resourse Blocks (PRBs).
  • PRBs Physical Resourse Blocks
  • the high layer signaling further includes indication information of the physical resource block.
  • the label information of the multiple physical resource blocks corresponds to the same or different pilot port number information; and/or, multiple physical The indication information of the resource block corresponds to the same or different number of pilot port numbers. If the same pilot is configured for the R-PDCCH in the multiple physical resource blocks, that is, the pilot port numbers corresponding to each R-PDCCH are identical, the indication information of the physical resource block may be omitted in the high layer signaling.
  • R-PDSCH Configured pilot port number information and/or pilot port number information.
  • the pilot port number information and/or the number of pilot port numbers configured for the R-PDSCH refer to the pilot port number information and/or the number of pilot port numbers configured for the R-PDCCH.
  • the configuration module 201 has the same or different pilot port number information configured for the R-PDCCH and the R-PDSCH; and/or, the configuration module has the same or different information of the number of pilot ports configured for the R-PDCCH and the R-PDSCH.
  • the interface module 202 is further configured to transmit, according to the pilot type information configured for the R-PDSCH, the R-PDSCH in the R-PDSCH according to the pilot port number information and/or the number of pilot port information configured for the R-PDSCH. Configured pilots.
  • the apparatus for receiving a pilot in a relay system in this embodiment includes: a signaling interface module 301 and a pilot interface module 302.
  • the device may specifically be a relay device.
  • the signaling interface module 301 is configured to receive the high layer signaling sent by the base station, and parse the high layer signaling, obtain pilot type information configured for the R-PDCCH, and include pilot port number information configured for the R-PDCCH and/or Pilot port number information.
  • the pilot interface module 302 is configured to receive pilots according to pilot type information configured for the R-PDCCH, and pilot port number information and/or pilot port number information configured for the R-PDCCH.
  • the relay device further includes: an estimation demodulation module 303, configured to perform channel estimation and demodulation on the R-PDCCH according to the received pilot after receiving the pilot.
  • the estimation demodulation module 303 is further configured to obtain pilot port number information and/or pilot port number information configured for the R-PDSCH after demodulating the R-PDCCH.
  • the pilot interface module 302 is further configured to receive pilots according to pilot port number information and/or pilot port number information configured for the R-PDSCH.
  • the estimation demodulation module 303 performs channel estimation and demodulation on the R-PDSCH according to the received pilot. Since the R-PDSCH can be configured in multiple physical resource blocks, the R-PDCCH can also transmit the indication information of the physical resource block, and the indication information of the multiple physical resource blocks can correspond to the different R-PDSCH configurations. Pilot configuration information.
  • the estimation demodulation module 303 separately performs the R-PDCCH in the multiple physical resource blocks. Channel estimation and demodulation.
  • the estimated demodulation module 303 can perform channel estimation and demodulation for the R-PDCCH in the plurality of physical resource blocks simultaneously according to the received pilot.
  • the internal structure and functions of the base station and the relay device are described above. The following describes the transmission process of the pilot configuration information implemented by the base station and the relay device.
  • the method for implementing the method of transmitting base station information in the process of transmitting pilot configuration information in this embodiment is as follows:
  • Step 401 The base station generates a high layer signaling carrying pilot configuration information configured for the R-PDCCH.
  • Step 402 The base station sends the high layer signaling to the relay device.
  • the detailed method for implementing the base station side in the process of transmitting pilot configuration information in this embodiment is as follows:
  • Step 501 The base station generates high layer signaling carrying the pilot type information configured for the configuration, and the pilot port number information and/or the number of pilot port numbers configured for the R-PDCCH.
  • Step 502 The base station sends the high layer signaling to the relay device.
  • the base station may also transmit the pilot configured for the R-PDCCH according to the pilot type information configured for the R-PDCCH and according to the pilot port number information and/or the number of pilot port numbers configured for the R-PDCCH.
  • Step 503 The base station generates a configuration message carrying pilot type information configured for the R-PDSCH, and pilot port number information and/or pilot port number information configured for the R-PDSCH.
  • Step 504 The base station sends a configuration message to the relay device by using the R-PDCCH.
  • the base station may also transmit the pilot configured for the R-PDSCH according to the pilot type information configured for the R-PDSCH and based on the pilot port number information and/or the number of pilot port numbers configured for the R-PDSCH.
  • steps 501 and 502 and steps 503 and 504 are two relatively independent processes, and the execution order can be interchanged.
  • the method for implementing the method of relaying device configuration information in the process of transmitting pilot configuration information in this embodiment is as follows:
  • Step 601 The relay device receives the high layer signaling sent by the base station, and parses the high layer signaling to obtain pilot configuration information configured for the R-PDCCH.
  • Step 602 The relay device receives the pilot according to the pilot configuration information configured for the R-PDCCH.
  • the detailed method for implementing the relay device side in the process of transmitting pilot configuration information in this embodiment is as follows:
  • Step 701 The relay device receives the high layer signaling sent by the base station.
  • Step 702 The relay device parses the pilot type information configured for the R-PDCCH from the high layer signaling, and includes the pilot port number information and/or the number of pilot port numbers configured for the R-PDCCH.
  • Step 703 The relay device obtains the pilot of the R-PDCCH according to the pilot configuration information configured for the R-PDCCH.
  • Step 704 The relay device performs channel estimation and demodulation on the R-PDCCH according to the received pilot.
  • the pilot type information including the configuration for the R-PDSCH and the configuration message including the pilot port number information and/or the number of pilot port numbers configured for the R-PDCCH are obtained from the R-PDCCH.
  • the relay device performs channel estimation on the R-PDCCH in the multiple physical resource blocks respectively. demodulation.
  • Step 705 The relay device obtains, from the R-PDCCH, pilot port number information and/or pilot port number information configured for the R-PDSCH.
  • Step 706 The relay device obtains the pilot of the R-PDSCH according to the pilot configuration information configured for the R-PDSCH.
  • Step 707 The relay device performs channel estimation and demodulation on the R-PDSCH according to the received pilot.
  • the configuration message includes the indication information of the physical resource block, and the indication information of the multiple physical resource blocks corresponds to different pilot ports, the relay device performs channel estimation and solution on the R-PDSCH in the plurality of physical resource blocks respectively. Tune.
  • the software for implementing the embodiments of the present invention can be stored in a floppy disk, a hard disk, an optical disk, and a flash memory. Storage medium.
  • the base station sends the pilot configuration information configured for the R-PDCCH to the relay device by using the high layer signaling, so that the relay device can receive the pilot according to the pilot configuration information and perform channel demodulation on the R-PDCCH.
  • the pilot configuration information includes one or more of pilot type information, pilot port number information, and pilot port number information, and may also include other pilot related information.
  • the pilot type information includes common pilot type information or dedicated pilot type information. Therefore, the embodiment of the present invention solves the problem that the port information of the DMRS cannot be notified to the relay device, and solves the problem that the CRS cannot be separately configured for the device.
  • the embodiments of the present invention provide multiple types of information, such as pilot type information, pilot port number information, and pilot port number, to meet the needs of multiple network environments.
  • the embodiment of the present invention may also configure different pilot configuration information for the R-PDCCH and the R-PDSCH in multiple PRBs, and configure different pilot configuration information for the R-PDCCH and the R-PDSCH to implement flexible pilot. Configuration, suitable for time division multiplexing systems and frequency division multiplexing systems.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

一种传输导频配置信息的方法及装置，用于实现向中继节点传输导频配置信息，使中继节点可以根据导频配置信息接收导频并进行信道解调。所述方法包括：基站生成包括为中继的物理下行控制信道R-PDCCH配置的导频配置信息的高层信令；基站将所述高层信令发送给中继设备。

Description

一种传输导频配置信息的方法及装置 本申请要求在 2010年 03月 22日 提交中 国专利局、 申请号为 201010130985.1、发明名称为"一种传输导频配置信息的方法及装置，，的中国专 利申请的优先权， 其全部内容通过引用结合在本申请中。 技术领域
本发明涉及通信领域， 特别是涉及传输导频配置信息的方法及装置。 背景技术
在通信过程中， 对信道的解调是必不可少的环节。 通常釆用接收到的导 频来解调信道。 在接收导频之前， 需要预先知道导频的端口号和端口数目， 以便在相应的位置接收导频。 导频包括公共导频（如小区公共参考信号（Cell Reference Signal, CRS ) )和专用导频（如解调参考信号（ Demodulation Reference Signal, DMRS ) )„
当导频为 CRS时， CRS的端口数目可以通过接收广播信息获得。 小区中 所有中继设备和用户设备 ( UE ) 均釆用相同的导频进行信道解调， 问题是无 法单独为某个设备配置 CRS。
当导频为 DMRS时， 由于 DMRS只能用于数据信道的解调， 因此其端口 号和端口数目不能在广播信道中传输， 目前是在物理下行控制信道（Physical Downlink Control Channel , PDCCH ) 的控制信息格式中传输。 然而， 在基站 (如演进基站（eNB ) ) 向中继设备传输 PDCCH的同时， 中继设备也在向用 户设备传输 PDCCH, 因此中继设备无法接收基站传输的 PDCCH, 也就无法 从 PDCCH中获得端口信息来解调中继的物理下行控制信道（R-PDCCH )等。 综上， 目前尚未有效通知 DMRS的端口信息给中继设备的方案，致使中继设备 无法接收 DMRS及进行后续的信道解调。以及，无法实现为设备单独配置 CRS。 发明内容
本发明实施例提供一种在中继系统中传输导频配置信息的方法及装置， 用于实现向中继设备 ( RN )传输导频配置信息。
一种在中继系统中传输导频配置信息的方法， 包括以下步骤：
基站生成携带有为 R-PDCCH配置的导频配置信息的高层信令； 基站将所述高层信令发送给中继设备。
一种在中继系统中传输导频配置信息的装置， 包括：
配置模块， 用于生成包携带有为 R-PDCCH 配置的导频配置信息的高层 信令；
接口模块， 用于将所述高层信令发送给中继设备。
本方案中，基站通过高层信令将为 R-PDCCH配置的导频配置信息发送给 中继设备， 从而达到了向中继设备 ( RN )传输导频配置信息的目的。
本发明实施例提供还一种在中继系统中接收导频的方法及装置， 用于实 现中继节点根据导频配置信息接收导频并进行信道解调。
一种在中继系统中接收导频的方法， 包括以下步骤：
中继设备接收基站发送的高层信令， 并解析该高层信令， 得到为 R-PDCCH配置的导频配置信息；
中继设备根据为 R-PDCCH配置的导频配置信息接收导频。
一种在中继系统中接收导频的装置， 包括：
信令接口模块， 用于接收基站发送的高层信令， 并解析该高层信令， 得 到为 R-PDCCH配置的导频配置信息；
导频接口模块， 用于根据为 R-PDCCH配置的导频配置信息接收导频。 本发明实施例中中继设备接收基站通过高层信令发送的为 R-PDCCH 配 置的导频配置信息， 中继设备可以根据导频配置信息接收导频并对 R-PDCCH 进行信道解调。 导频配置信息包括导频类型信息、 导频端口号信息和导频端 口数目信息中的一项或多项， 还可以包括其它与导频有关的信息。 导频类型 信息包括公共导频类型信息或专用导频类型信息。 因此， 本发明实施例既解 决了无法通知 DMRS的端口信息给中继设备的问题， 又解决了无法实现为设 备单独配置 CRS的问题。 附图说明
图 1为本发明实施例中中继系统的结构示意图；
图 2 为本发明实施例中在中继系统中传输导频配置信息的装置结构示意 图；
图 3为本发明实施例中在中继系统中接收导频的装置结构示意图； 图 4 为本发明实施例中传输导频配置信息过程中基站侧的方法实现流程 示意图；
图 5 为本发明实施例中传输导频配置信息过程中基站侧的详细方法实现 流程示意图；
图 6 为本发明实施例中传输导频配置信息过程中中继设备侧的方法实现 流程示意图；
图 7 为本发明实施例中传输导频配置信息过程中中继设备侧的详细方法 实现流程示意图。 具体实施方式
本发明实施例中基站通过高层信令将为 R-PDCCH 配置的导频配置信息 发送给中继设备， 使中继设备可以根据导频配置信息接收导频并对 R-PDCCH 进行信道解调。 导频配置信息包括导频类型信息和导频端口信息中的至少一 项， 还可以包括其它与导频有关的信息。 导频类型信息包括公共导频类型信 息或专用导频类型信息。 导频端口信息包括为 R-PDCCH 配置的导频端口号 信息和导频端口数目信息中的至少一项。 基站通过广播信道或者专有信道将 所述高层信令发送给中继设备。 高层信令如无线资源控制 （RRC )信令等。 因此， 本发明实施例既解决了无法通知 DMRS 的端口信息给中继设备的问 题， 又解决了无法实现为设备单独配置 CRS的问题。
参见图 1 , 本实施例中的中继系统包括基站和中继设备。
基站直接与中继设备和用户设备交互， 还可以直接与核心网（ CN )连接。 基站用于生成携带有为 R-PDCCH配置的导频类型信息， 以及为 R-PDCCH配 置的导频端口号信息和 /或导频端口数目信息的高层信令， 并将所述高层信令 发送给中继设备。
中继设备用于转发用户设备与基站之间的消息， 接收基站发送的高层信 令， 并解析该高层信令， 得到为 R-PDCCH 配置的导频类型信息， 以及为 R-PDCCH 配置的导频端口号信息和 /或导频端口数目信息， 并根据为 R-PDCCH配置的导频类型信息， 以及为 R-PDCCH配置的导频端口号信息和 /或导频端口数目信息接收导频。
其中， 导频类型信息有多种具体表现形式， 如通过类型标识实现， 不同 的类型标识表示公共导频和专用导频。 或者， 用一个类型标识表示专用导 频， 当高层信令携带该类型标识时， 指示专用导频的导频配置信息， 如果未 携带该类型标识， 则指示公共导频的导频配置信息。 还可以有其它形式， 此 处不一一列举。 高层信令可以携带有导频端口号信息和 /或导频端口数目信息。 例如， 高 层信令可以只携带有导频端口号信息， 基站将为 R-PDCCH 配置的全部端口 号携带在高层信令中，该方案可为 R-PDCCH配置不连续的端口号。 高层信令 可以只携带有导频端口数目信息， 导频端口数目信息可以是具体的数字或数 字的编码等， 该方案需要预先通知中继设备起始导频端口号， 可以通过高层 信令通知也可以通过操作维护实体等为中继设备配置， 然后基站通过高层信 令将导频端口数目信息通知给中继设备， 中继设备根据起始导频端口号和导 频端口数目信息确定导频端口号， 如起始导频端口号为 7 , 导频端口数目信 息为 2, 则为 R-PDCCH配置的导频端口号是 7和 8。 该方案主要适用于配置 连续的导频端口号， 并且相对于只携带导频端口号信息的方式， 可节省信令 长度。 高层信令携带有导频端口号信息和导频端口数目信息时， 导频端口号 信息可以是起始导频端口号， 中继设备根据起始导频端口号和导频端口数目 信息确定导频端口号， 该方式相对于只携带导频端口数目信息的方式， 可以 不需要固定配置起始导频端口号， 每次配置时可以指定不同的起始导频端口 号。 并且在配置的导频端口号较多时， 相对于只携带导频端口号信息的方式 更节省信令资源。 如果预先配置了起始导频端口号与导频类型信息的对应关 系， 如公共导频的起始导频端口号是 0, 专用导频的起始导频端口号是 7 , 则 可以在高层信令中省略导频类型信息， 由导频端口号信息隐含表示。 如果固 定配置导频端口数目信息和预先配置了起始导频端口号与导频类型信息的对 应关系， 则只通过高层信令通知导频类型信息也可隐含表示导频端口号信息 和导频端口数目信息。 综上， 高层信令可以只携带导频类型信息， 或者只携 带导频端口号信息， 或者携带导频类型信息和导频端口数目信息， 或者携带 导频端口号信息和导频端口数目信息， 或者携带导频类型信息、 导频端口号 信息和导频端口数目信息。
参见图 2, 本实施例中的在中继系统中传输导频配置信息的装置包括： 配置模块 201和接口模块 202。 基站可具体为长期演进（ Long Term Evolution, LTE ) 系统中的演进基站 （eNB )等。 该装置具体可以是基站。
配置模块 201用于生成携带有为 R-PDCCH配置的导频类型信息， 以及为 R-PDCCH 配置的导频端口号信息和 /或导频端口数目信息的高层信令。 导频 类型信息包括公共导频类型信息或专用导频类型信息。
接口模块 202用于将所述高层信令发送给中继设备。 接口模块 202还用 于根据为 R-PDCCH配置的导频类型信息， 以及根据为 R-PDCCH配置的导频 端口号信息和 /或导频端口数目信息， 在 R-PDCCH中传输为 R-PDCCH配置 的导频。
可以在多个物理资源块 （ Physical Resourse Block , PRB ) 中配置 R-PDCCH。 当配置模块 201需要为多个物理资源块中的 R-PDCCH配置导频 时， 所述高层信令还包括物理资源块的标示信息。 在所述高层信令中， 多个 物理资源块的标示信息对应相同或不同的导频端口号信息； 和 /或， 多个物理 资源块的标示信息对应相同或不同的导频端口数目信息。 如果为多个物理资 源块中的 R-PDCCH配置相同的导频， 即每个 R-PDCCH对应的导频端口号完 全相同， 则可在所述高层信令中省略物理资源块的标示信息。
( R-PDSCH ) 配置的导频端口号信息和 /或导频端口数目信息。 为 R-PDSCH 配置的导频端口号信息和 /或导频端口数目信息的表现形式可参见为 R-PDCCH配置的导频端口号信息和 /或导频端口数目信息。 配置模块 201 为 R-PDCCH和 R-PDSCH配置的导频端口号信息相同或者不同； 和 /或， 配置模 块为 R-PDCCH和 R-PDSCH配置的导频端口数目信息相同或者不同。 接口模 块 202还用于根据为 R-PDSCH配置的导频类型信息， 以及根据为 R-PDSCH 配置的导频端口号信息和 /或导频端口数目信息， 在 R-PDSCH 中传输为 R-PDSCH配置的导频。
参见图 3 , 本实施例中的在中继系统中接收导频的装置包括： 信令接口 模块 301和导频接口模块 302。 该装置具体可以是中继设备。
信令接口模块 301 用于接收基站发送的高层信令， 并解析该高层信令， 得到为 R-PDCCH配置的导频类型信息， 以及包括为 R-PDCCH配置的导频端 口号信息和 /或导频端口数目信息。
导频接口模块 302用于根据为 R-PDCCH配置的导频类型信息， 以及为 R-PDCCH配置的导频端口号信息和 /或导频端口数目信息接收导频。
中继设备还包括： 估计解调模块 303 , 用于在接收导频后， 根据收到的 导频对 R-PDCCH进行信道估计和解调。
估计解调模块 303还用于在对 R-PDCCH进行解调后， 获得为 R-PDSCH 配置的导频端口号信息和 /或导频端口数目信息。 导频接口模块 302还用于根 据为 R-PDSCH配置的导频端口号信息和 /或导频端口数目信息接收导频。 估 计解调模块 303根据接收到的导频对 R-PDSCH进行信道估计和解调。 由于可 以在多个物理资源块中配置 R-PDSCH, 则 R-PDCCH中也可传输物理资源块 的标示信息， 多个物理资源块的标示信息可以对应为 R-PDSCH 配置的不同 的导频配置信息。
当所述高层信令包括物理资源块的标示信息， 且多个物理资源块的标示 信息对应不同的导频配置信息时， 估计解调模块 303对多个物理资源块中的 R-PDCCH 分别进行信道估计和解调。 多个物理资源块的标示信息对应相同 的导频端口时， 估计解调模块 303 可以才艮据收到的导频同时为多个物理资源 块中的 R-PDCCH进行信道估计和解调。
以上描述了基站和中继设备的内部结构和功能， 下面对基站和中继设备 实现的导频配置信息的传输过程进行介绍。
参见图 4,本实施例中传输导频配置信息过程中基站侧的方法实现流程如 下：
步骤 401 : 基站生成携带有为 R-PDCCH 配置的导频配置信息的高层信 令。
步骤 402: 基站将所述高层信令发送给中继设备。
参见图 5,本实施例中传输导频配置信息过程中基站侧的详细方法实现流 程如下：
步骤 501 : 基站生成携带有为配置的导频类型信息， 以及为 R-PDCCH配 置的导频端口号信息和 /或导频端口数目信息的高层信令。
步骤 502: 基站将所述高层信令发送给中继设备。 基站还可以根据为 R-PDCCH配置的导频类型信息， 以及根据为 R-PDCCH配置的导频端口号信 息和 /或导频端口数目信息， 传输为 R-PDCCH配置的导频。
步骤 503: 基站生成携带有为 R-PDSCH 配置的导频类型信息， 以及为 R-PDSCH配置的导频端口号信息和 /或导频端口数目信息的配置消息。
步骤 504: 基站通过 R-PDCCH将配置消息发送给中继设备。 基站还可以 根据为 R-PDSCH配置的导频类型信息， 以及根据为 R-PDSCH配置的导频端 口号信息和 /或导频端口数目信息， 传输为 R-PDSCH配置的导频。
其中， 步骤 501和 502与步骤 503和 504是两个相对独立的过程， 执行 顺序可以互换。 参见图 6,本实施例中传输导频配置信息过程中中继设备侧的方法实现流 程如下：
步骤 601 : 中继设备接收基站发送的高层信令， 并解析该高层信令，得到 为 R-PDCCH配置的导频配置信息。
步骤 602: 中继设备根据为 R-PDCCH配置的导频配置信息接收导频。 参见图 7,本实施例中传输导频配置信息过程中中继设备侧的详细方法实 现流程如下：
步骤 701： 中继设备接收基站发送的高层信令。
步骤 702: 中继设备从高层信令中解析出为 R-PDCCH配置的导频类型信 息， 以及包括为 R-PDCCH配置的导频端口号信息和 /或导频端口数目信息。
步骤 703 : 中继设备根据为 R-PDCCH 配置的导频配置信息获得 R-PDCCH的导频。
步骤 704： 中继设备根据收到的导频对 R-PDCCH进行信道估计和解调。 从 R-PDCCH 中获得包括为 R-PDSCH 配置的导频类型信息， 以及包括为 R-PDCCH 配置的导频端口号信息和 /或导频端口数目信息的配置消息。 当所 述高层信令包括物理资源块的标示信息， 且多个物理资源块的标示信息对应 不同的导频端口时， 中继设备对多个物理资源块中的 R-PDCCH分别进行信 道估计和解调。
步骤 705: 中继设备从 R-PDCCH中获得为 R-PDSCH配置的导频端口号 信息和 /或导频端口数目信息。
步骤 706 : 中继设备根据为 R-PDSCH 配置的导频配置信息获得 R-PDSCH的导频。
步骤 707： 中继设备根据收到的导频对 R-PDSCH进行信道估计和解调。 当所述配置消息包括物理资源块的标示信息， 且多个物理资源块的标示信息 对应不同的导频端口时， 中继设备对多个物理资源块中的 R-PDSCH分别进 行信道估计和解调。
用于实现本发明实施例的软件可以存储于软盘、 硬盘、 光盘和闪存等存 储介质。
本发明实施例中基站通过高层信令将为 R-PDCCH 配置的导频配置信息 发送给中继设备， 使中继设备可以根据导频配置信息接收导频并对 R-PDCCH 进行信道解调。 导频配置信息包括导频类型信息、 导频端口号信息和导频端 口数目信息中的一项或多项， 还可以包括其它与导频有关的信息。 导频类型 信息包括公共导频类型信息或专用导频类型信息。 因此， 本发明实施例既解 决了无法通知 DMRS的端口信息给中继设备的问题， 又解决了无法实现为设 备单独配置 CRS的问题。
本发明实施例提供了多种方式携带导频类型信息、 导频端口号信息和导 频端口数目信息， 以适应多种网络环境的需要。 本发明实施例还可为多个 PRB 中的 R-PDCCH 和 R-PDSCH 配置不同的导频配置信息， 以及可以为 R-PDCCH和 R-PDSCH配置不同的导频配置信息， 实现导频的灵活配置， 适 用于时分复用系统和频分复用系统。
本发明是参照根据本发明实施例的方法、 设备（系统）、 和计算机程序产 品的流程图和 /或方框图来描述的。 应理解可由计算机程序指令实现流程图 和 /或方框图中的每一流程和 /或方框、 以及流程图和 /或方框图中的流程 和 /或方框的结合。 可提供这些计算机程序指令到通用计算机、 专用计算机、 嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器， 使得通 过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流 程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的 装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设 备以特定方式工作的计算机可读存储器中， 使得存储在该计算机可读存储器 中的指令产生包括指令装置的制造品， 该指令装置实现在流程图一个流程或 多个流程和 /或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上， 使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的 处理， 从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图 一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的步 骤。
尽管已描述了本发明的优选实施例， 但本领域内的技术人员一旦得知了 基本创造性概念， 则可对这些实施例作出另外的变更和修改。 所以， 所附权 利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。 发明的精神和范围。 这样， 倘若本发明的这些修改和变型属于本发明权利要 求及其等同技术的范围之内， 则本发明也意图包含这些改动和变型在内。

Claims

权 利 要 求
1、 一种在中继系统中传输导频配置信息的方法， 其特征在于， 包括以 下步骤：
基站生成携带有为中继的物理下行控制信道 R-PDCCH 配置的导频配置 信息的高层信令；
基站将所述高层信令发送给中继设备。
2、 如权利要求 1所述的方法， 其特征在于， 导频配置信息包括导频类型 信息和导频端口信息中的至少一项。
3、 如权利要求 2所述的方法， 其特征在于， 导频类型信息包括公共导频 类型信息或专用导频类型信息。
4、 如权利要求 2 所述的方法， 其特征在于， 导频端口信息包括为 R-PDCCH配置的导频端口号信息和导频端口数目信息中的至少一项。
5、 如权利要求 1至 4中任一项所述的方法， 其特征在于， 当基站需要为 多个物理资源块中的 R-PDCCH 配置导频时， 所述高层信令还携带有所述多 个物理资源块的标示信息。
6、 如权利要求 5所述的方法， 其特征在于， 在所述高层信令中， 多个物 理资源块的标示信息对应相同或不同的导频配置信息。
7、 如权利要求 1至 4中任一项所述的方法， 其特征在于， 基站将所述高 层信令发送给中继设备的步骤包括： 基站通过广播信道或者专有信道将所述 高层信令发送给中继设备。
8、 如权利要求 1至 4中任一项所述的方法， 其特征在于， 在基站将所述 高层信令发送给中继设备之后， 还包括步骤：
基站传输为 R-PDCCH配置的导频。
9、 一种在中继系统中接收导频的方法， 其特征在于， 包括以下步骤： 中继设备接收基站发送的高层信令， 并解析该高层信令， 得到为中继物 理下行控制信道 R-PDCCH配置的导频配置信息； 中继设备根据为 R-PDCCH配置的导频配置信息接收导频。
10、 如权利要求 9 所述的方法， 其特征在于， 导频配置信息包括导频类 型信息和导频端口信息中的至少一项。
11、 如权利要求 10所述的方法， 其特征在于， 导频类型信息包括公共导 频类型信息或专用导频类型信息。
12、 如权利要求 10 所述的方法， 其特征在于， 导频端口信息包括为 R-PDCCH配置的导频端口号信息和导频端口数目信息中的至少一项。
13、 如权利要求 9至 12中任一项所述的方法， 其特征在于， 所述高层信 令还携带有多个物理资源块的标示信息。
14、 如权利要求 13所述的方法， 其特征在于， 在所述高层信令中， 多个 物理资源块的标示信息对应相同或不同的导频配置信息。
15、 如权利要求 9至 12中任一项所述的方法， 其特征在于， 中继设备接 收基站发送的高层信令的步骤包括： 中继设备通过广播信道或者专有信道接 收基站发送的高层信令。
16、 如权利要求 9 至 12 中任一项所述的方法， 其特征在于， 还包括步 骤： 中继设备接收导频后， 根据接收到的导频对 R-PDCCH进行信道估计和 解调。
17、 一种在中继系统中传输导频配置信息的装置， 其特征在于， 包括： 配置模块， 用于生成携带有为中继的物理下行控制信道 R-PDCCH 配置 的导频配置信息的高层信令；
接口模块， 用于将所述高层信令发送给中继设备。
18、 如权利要求 17所述的装置， 其特征在于， 导频配置信息包括导频类 型信息和导频端口信息中的至少一项。
19、 如权利要求 18所述的装置， 其特征在于， 导频类型信息包括公共导 频类型信息或专用导频类型信息。
20、 如权利要求 18 所述的装置， 其特征在于， 导频端口信息包括为 R-PDCCH配置的导频端口号信息和导频端口数目信息中的至少一项。
21、 如权利要求 17至 20中任一项所述的装置， 其特征在于， 当配置模 块需要为多个物理资源块中的 R-PDCCH 配置导频时， 所述高层信令还包括 所述多个物理资源块的标示信息。
22、 如权利要求 21所述的装置， 其特征在于， 在所述高层信令中， 多个 物理资源块的标示信息对应相同或不同的导频配置信息。
23、 如权利要求 17至 20中任一项所述的装置， 其特征在于， 接口模块 通过广播信道或者专有信道将所述高层信令发送给中继设备。
24、 如权利要求 17至 20中任一项所述的装置， 其特征在于， 接口模块 还用于传输为 R-PDCCH配置的导频。
25、 一种在中继系统中接收导频的装置， 其特征在于， 包括：
信令接口模块， 用于接收基站发送的高层信令， 并解析该高层信令， 得 到为中继的物理下行控制信道 R-PDCCH配置的导频配置信息；
导频接口模块， 用于根据为 R-PDCCH配置的导频配置信息接收导频。
26、 如权利要求 25所述的装置， 其特征在于， 导频配置信息包括导频类 型信息和导频端口号信息中的至少一项。
27、 如权利要求 26所述的中继设备， 其特征在于， 导频类型信息包括公 共导频类型信息或专用导频类型信息。
28、 如权利要求 26 所述的装置， 其特征在于， 导频端口信息包括为 R-PDCCH配置的导频端口号信息和导频端口数目信息中的至少一项。
29、 如权利要求 25至 28中任一项所述的装置， 其特征在于， 所述高层 信令还包括所述多个物理资源块的标示信息。
30、 如权利要求 29所述的装置， 其特征在于， 在所述高层信令中， 多个 物理资源块的标示信息对应相同或不同的导频配置信息。
31、 如权利要求 25至 28中任一项所述的装置， 其特征在于， 信令接口 模块通过广播信道或者专有信道接收基站发送的高层信令。
32、 如权利要求 25至 28中任一项所述的装置， 其特征在于， 还包括： 估 计解调模块， 用于在接收导频后， 根据收到的导频对 R-PDCCH进行信道估计 和解调。
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