WO2013117071A1 - 一种tdd系统动态帧结构分配方法、系统及演进基站 - Google Patents

一种tdd系统动态帧结构分配方法、系统及演进基站 Download PDF

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Publication number
WO2013117071A1
WO2013117071A1 PCT/CN2012/077760 CN2012077760W WO2013117071A1 WO 2013117071 A1 WO2013117071 A1 WO 2013117071A1 CN 2012077760 W CN2012077760 W CN 2012077760W WO 2013117071 A1 WO2013117071 A1 WO 2013117071A1
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Prior art keywords
frame structure
configuration
enb
configuration information
pdcch
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PCT/CN2012/077760
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English (en)
French (fr)
Inventor
张晓博
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中兴通讯股份有限公司
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Priority to US14/377,699 priority Critical patent/US9467992B2/en
Priority to EP12868247.3A priority patent/EP2806701B1/en
Publication of WO2013117071A1 publication Critical patent/WO2013117071A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • 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
    • H04B7/2643Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
    • H04B7/2656Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA] for structure of frame, burst
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037Inter-user or inter-terminal allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/14Two-way operation using the same type of signal, i.e. duplex
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446Resources in time domain, e.g. slots or frames

Definitions

  • the present invention relates to the 3rd Generation Partnership Project (3GPP) technology, and in particular to a method, system and evolved base station (eNB) for dynamic frame structure allocation of a Time Division Duplexing (TDD) system.
  • 3GPP 3rd Generation Partnership Project
  • eNB evolved base station
  • the system frame of TDD is composed of ten subframes.
  • the frame structure configured by the current serving cell of the user equipment is notified by the system information SIB-I.
  • SIB-I system information
  • the pre-research project of "Dynamic TDD Frame Structure" officially approved by the 3GPP in the RAN54 (December 2011) sub-committee, it is possible to dynamically allocate the frame structure of the TDD system.
  • the minimum variation period of the SIB information in the existing 3GPP standard is 640 ms, and the TDD system frame structure cannot be dynamically allocated in time.
  • the main object of the present invention is to provide a method, system and eNB for dynamic frame structure allocation of a TDD system, which can shorten the change period of the frame structure of the TDD system and better support the transmission of asymmetric services.
  • the present invention provides a method for allocating a dynamic frame structure of a TDD system, the method comprising: the eNB transmitting, to the UE, a Radio Resource Control Protocol (RRC) command that enters a dynamic configuration frame structure state, and is in a physical downlink control channel (PDCCH, Physical Downlink Control Channel) sends configuration information of the frame structure;
  • RRC Radio Resource Control Protocol
  • the UE After receiving the RRC command, the UE detects configuration information of a frame structure in the PDCCH, and configures a frame structure adopted by the next configuration period according to the detected configuration information.
  • the RRC command is a System Information Block (SIB) information broadcast signaling or a UE-specific RRC command
  • SIB information broadcast signaling or the UE-specific RRC command carries a pre-agreed agreement between the eNB and the UE.
  • SIB System Information Block
  • the configuration information of the eNB transmitting the frame structure in the PDCCH is: the eNB reuses the downlink control information (DCI, Downlink Control Information) bit, and sets the configuration information of the frame structure in the reused DCI bit.
  • DCI Downlink Control Information
  • the configuration information of the eNB transmitting the frame structure in the PDCCH is: the eNB re-defines the DCI bit, and sets the configuration information of the frame structure in the redefined DCI bit.
  • the PDCCH of the configuration information of the transmission frame structure is located in a predefined downlink subframe.
  • the reused DCI bit is: Reuse Uplink Index (ULI) or Downlink With the indication (DAI) bit.
  • the present invention provides a TDD system dynamic frame structure allocation system, and the system includes: an eNB and a UE, where
  • the eNB is configured to send an RRC command to the UE to enter a dynamic configuration frame structure state, and send configuration information of the frame structure on the PDCCH;
  • the UE is configured to: after receiving the RRC command, detect configuration information of a frame structure in the PDCCH, and configure a frame structure used in the next configuration period according to the detected configuration information.
  • the eNB includes: a status notification module and a configuration module, where the status notification module is configured to send an RRC command to the UE to enter a dynamic configuration frame structure state;
  • the configuration module is configured to send configuration information of the frame structure on the PDCCH.
  • the configuration module is specifically configured to reuse DCI bits, and set configuration information of the frame structure in the reused DCI bit.
  • the present invention provides an eNB, where the eNB includes: a status notification module and a configuration module;
  • a status notification module configured to send, to the UE, an RRC command to enter a dynamic configuration frame structure state
  • the configuration module is configured to send configuration information of the frame structure on the PDCCH.
  • the present invention provides a method, a system, and an eNB for the dynamic frame structure allocation of a TDD system.
  • the eNB sends an RRC command to the UE to enter a dynamic configuration frame structure state, and sends configuration information of the frame structure on the PDCCH.
  • the UE receives the instruction. Detecting the configuration information of the frame structure in the PDCCH, and configuring the frame structure used in the next configuration period according to the detected configuration information; thus, the variation period of the frame structure of the TDD system can be shortened, and the transmission of the asymmetric service is better supported.
  • FIG. 1 is a schematic flowchart of a method for implementing dynamic frame structure allocation of a TDD system according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a structure of a PUSCH frame dynamically indicating a UE according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a structure of a PDSCH frame dynamically indicating a UE according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a frame structure being switched from 0 to 2 according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a system for realizing dynamic frame structure allocation of a TDD system according to an embodiment of the present invention. detailed description
  • the basic idea of the present invention is: the eNB sends an RRC command to the UE to enter the dynamic configuration frame structure state, and sends configuration information of the frame structure on the PDCCH; after receiving the RRC command, the UE detects configuration information of the frame structure in the PDCCH, according to the detection Configuration information to the configuration, configure the frame structure used in the next configuration cycle.
  • the embodiments of the present invention implements a method for dynamically frame structure allocation of a TDD system. As shown in FIG. 1, the method includes the following steps:
  • Step 101 The eNB sends an RRC command to the UE to enter a dynamic configuration frame structure state.
  • the RRC command is SIB information broadcast signaling or UE-specific RRC signaling, and the SIB information broadcast signaling or UE-specific
  • the RRC command carries an identifier or information that is pre-agreed with the UE to enter a dynamic configuration frame structure state;
  • the UE-specific RRC signaling may be a configuration command of a Channel State Indicator-Reference Signal (CSI-RS, Channel State Indicator-Reference Signal) or a periodic instruction fed back by a Channel State Indicator (CSI).
  • CSI-RS Channel State Indicator-Reference Signal
  • CSI Channel State Indicator
  • Step 102 The eNB sends configuration information of a frame structure on the PDCCH.
  • the eNB reuses the DCI bit of the PDCCH subframe, and sets configuration information of the frame structure in the reused DCI bit or the redefined DCI bit;
  • the PDCCH of the configuration information of the sending frame structure may be located under a predefined a row subframe, such as a downlink subframe 5 or a downlink subframe 8;
  • the current PUSCH frame structure is frame structure 1
  • the eNB sets the DAI bit of the second PDCCH subframe in frame structure 1 to 01, indicating
  • the PUSCH frame structure of the next configuration period of the UE adopts the frame structure 0.
  • the eNB sets the ULI bit of the first PDCCH subframe in the frame structure 0 to 11, indicating the next configuration period of the UE.
  • the PUSCH frame structure adopts a frame structure 6;
  • the eNB sets the DAI bit of the first PDCCH subframe in the frame structure 1 to 01, indicating that the PDSCH frame structure of the next configuration period of the UE adopts the frame structure 0, and when the frame structure 0 is adopted in the PDSCH frame structure, the eNB sets the frame structure.
  • the DAI bit of the first PDCCH subframe in 0 is 11, and the frame structure 6 is used to indicate the PDSCH frame structure of the next configuration period of the UE; where, for the current frame structure 1 ⁇ 5, when the continuous PDCCH subframe is allocated to one UE And setting the configuration information of the frame structure using the DAI information of any PDCCH subframe before the last PDCCH subframe.
  • the redefined DCI bit is used to indicate configuration information of a frame structure, which may be
  • DCI0/1/1A/1B/1D/2/2A/2B/2C have the same length and are generally placed in a PDCCH subframe position that is incompatible with the current 3GPP standard to distinguish the new DCI bit from the traditional DCI bit. .
  • the target switching frame structure of the frame structure 0 needs to support twice the physical hybrid retransmission indicator channel (PHICH) resource group, and the target switching frame structure includes the frame structure 1, 2, 6, as shown in FIG.
  • the fourth subframe in frame structure 2 needs to support twice the subframe of the PHICH resource group.
  • Step 103 After receiving the RRC command that enters the dynamic configuration frame structure state, the UE detects the configuration information of the frame structure in the PDCCH, and configures a frame structure used in the next configuration period according to the detected configuration information.
  • the above method further includes: setting, by the eNB, configuration information of the frame structure in two bits reserved by the physical broadcast channel (PBCH), so that the UE can learn the frame structure adopted in the next configuration period as early as possible (before demodulating the PDCCH), and No redundant bits are added;
  • PBCH physical broadcast channel
  • the configuration information of the frame structure can be set by using redundant bits in multiple PBCH transmissions in combination to support more frame structure if mega-format.
  • the embodiment of the present invention further provides a system for dynamically frame structure allocation of a TDD system.
  • the system includes: an eNB 51 and a UE 52, where
  • the eNB 51 is configured to send an RRC command to the UE 52 to enter a dynamic configuration frame structure state, And transmitting configuration information of the frame structure on the PDCCH;
  • the UE 52 is configured to: after receiving the RRC command, detect configuration information of a frame structure in the PDCCH, and configure a frame structure used in the next configuration period according to the detected configuration information;
  • the eNB 51 includes: a status notification module 511 and a configuration module 512.
  • the status notification module 511 is configured to send the status of the dynamic configuration frame structure to the UE 52.
  • the configuration module 512 is configured to send configuration information of the frame structure on the PDCCH.
  • the RRC command is an SIB information broadcast signaling or a UE-specific RRC signaling, where the identifier or information of the state of the dynamic configuration frame structure that is pre-agreed by the eNB 51 and the UE 52 is carried in advance;
  • the configuration module 512 is specifically configured to reuse DCI bits, and set configuration information of the frame structure in the reused DCI bit;
  • the reused DCI bit is generally reused ULI or DAI bit; the ULI or DAI bit is two bits, and the configuration information of setting the frame structure in the ULI or DAI bit is as shown in Table 2.
  • the configuration module 512 is specifically configured to redefine the DCI bit, which is redefined.
  • the DCI bit sets the configuration information of the frame structure
  • the PDCCH for transmitting the configuration information of the frame structure may be located in a predefined downlink subframe, the example subframe 5 or the subframe 8.
  • the present invention further provides an eNB.
  • the eNB 51 includes: a status notification module 511 and a configuration module 512;
  • the status notification module 511 is configured to send an RRC command to the UE 52 to enter a dynamic configuration frame structure state.
  • the configuration module 512 is configured to send configuration information of the frame structure on the PDCCH.
  • the RRC command is an SIB information broadcast signaling or a UE-specific RRC signaling, where the identifier or information of the state of the dynamic configuration frame structure that is pre-agreed by the eNB 51 and the UE 52 is carried in advance;
  • the configuration module 512 is specifically configured to reuse the DCI bit, and set configuration information of the frame structure in the reused DCI bit;
  • the reused DCI bit is generally reused ULI or DAI bit; the ULI or DAI bit is two bits, and the configuration information of setting the frame structure in the ULI or DAI bit is as shown in Table 2.
  • the configuration module 512 is specifically configured to redefine the DCI bit, and set configuration information of the frame structure in the redefined DCI bit;
  • the PDCCH for transmitting the configuration information of the frame structure may be located in a predefined downlink subframe, the example subframe 5 or the subframe 8.
  • the eNB sends the configuration information of the frame structure to the PDCCH, and sends an RRC command to enter the state of the dynamic configuration frame structure to notify the UE, and the UE configures the frame structure adopted in the next configuration period according to the configuration information of the frame structure, which can be shortened.
  • the change period of the frame structure of the TDD system better supports the transmission of asymmetric services.

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Abstract

本发明公开了一种时分双工系统(TDD)动态帧结构分配的方法,演进基站(eNB)向用户设备(UE)发送进入动态配置帧结构状态的无线资源控制协议(RRC)指令,并在物理下行控制信道(PDCCH)发送帧结构的配置信息;UE接收所述指令后,检测PDCCH中帧结构的配置信息,根据检测到的配置信息,配置下一个配置周期采用的帧结构;本发明同时还公开了一种TDD系统动态帧结构分配的系统及eNB,通过本发明的方案,能够缩短TDD系统帧结构的变动周期,更好地支持非对称业务的传输。

Description

一种 TDD系统动态帧结构分配方法、 系统及演进基站 技术领域
本发明涉及第三代合作伙伴计划 (3GPP, 3rd Generation Partnership Project )技术, 尤其涉及一种时分双工 (TDD, Time Division Duplexing ) 系统动态帧结构分配的方法、 系统及演进基站( eNB )。 背景技术
长期演进( LTE, Long Term Evolution )及高级长期演进 ( LTE-A )标 准中, TDD的系统帧是由十个子帧组成。 3GPP—共支持 7种帧结构, 如表 1所示, 其中 D表示下行信道子帧, S表示共享信道子帧, U表示上行信道 子帧。
Figure imgf000003_0001
表 1
目前 3GPP 标准中是通过系统信息 SIB-I 通知用户设备(UE, User Equipment ) 当前服务小区所配置的帧结构。 在 3GPP于 RAN54 ( 2011年 12月)次全会正式批准的 "动态 TDD帧结构" 的预研项目中, 更加使动态 的分配 TDD系统的帧结构成为可能。 但现有 3GPP标准中的 SIB信息最小 变动周期是 640ms, 不能及时的动态分配 TDD系统帧结构。如何缩短 TDD 系统帧结构的变动周期, 在兼容 3GPP R8~R10的 UE条件下, 更加动态的 通知 Rll及后续版本的 UE下一个配置周期采用的帧结构, 目前还没有相 应的解决方案。 发明内容
有鉴于此, 本发明的主要目的在于提供一种 TDD系统动态帧结构分配 的方法、 系统及 eNB, 能够缩短 TDD系统帧结构的变动周期, 更好地支持 非对称业务的传输。
为达到上述目的, 本发明的技术方案是这样实现的:
本发明提供一种 TDD系统动态帧结构分配方法, 该方法包括: eNB向 UE发送进入动态配置帧结构状态的无线资源控制协议 ( RRC, Radio Resource Control )指令, 并在物理下行控制信道( PDCCH, Physical Downlink Control Channel )发送帧结构的配置信息;
所述 UE接收所述 RRC指令后, 检测 PDCCH中帧结构的配置信息, 根据检测到的配置信息, 配置下一个配置周期采用的帧结构。
上述方案中, 所述 RRC指令为系统信息块(SIB, System Information Block )信息广播信令或 UE专有 RRC指令, 所述 SIB信息广播信令或 UE 专有 RRC指令携带 eNB与 UE预先约定的进入动态配置帧结构状态的标识 或信息。
上述方案中, 所述 eNB在 PDCCH发送帧结构的配置信息为: eNB重 用下行控制信息(DCI, Downlink Control Information ) 比特位, 在重用的 DCI比特位设置帧结构的配置信息。
上述方案中, 所述 eNB在 PDCCH发送帧结构的配置信息为: eNB重 新定义 DCI比特位, 在重新定义的 DCI比特位设置帧结构的配置信息。
上述方案中,所述发送帧结构的配置信息的 PDCCH位于预定义的下行 子帧。
上述方案中, 所述重用 DCI比特位为: 重用上行索引 (ULI )或下行分 配指示(DAI ) 比特位。
本发明提供的一种 TDD系统动态帧结构分配系统, 该系统包括: eNB 和 UE, 其中,
eNB, 配置为向 UE发送进入动态配置帧结构状态的 RRC指令, 并在 PDCCH发送帧结构的配置信息;
UE,配置为接收所述 RRC指令后,检测 PDCCH中帧结构的配置信息, 根据检测到的配置信息, 配置下一个配置周期采用的帧结构。
上述方案中, 所述 eNB包括: 状态通知模块和配置模块; 其中, 状态通知模块, 配置为向 UE发送进入动态配置帧结构状态的 RRC指 令;
配置模块, 配置为在 PDCCH发送帧结构的配置信息。
上述方案中, 所述配置模块, 具体配置为重用 DCI比特位, 在重用的 DCI比特位设置帧结构的配置信息。
本发明提供的一种 eNB, 该 eNB包括: 状态通知模块和配置模块; 其 中,
状态通知模块, 配置为向 UE发送进入动态配置帧结构状态的 RRC指 令;
配置模块, 配置为在 PDCCH发送帧结构的配置信息。
本发明提供了一种 TDD系统动态帧结构分配的方法、系统及 eNB, eNB 向 UE发送进入动态配置帧结构状态的 RRC指令, 并在 PDCCH发送帧结 构的配置信息; UE接收所述指令后, 检测 PDCCH中帧结构的配置信息, 根据检测到的配置信息, 配置下一个配置周期采用的帧结构; 如此, 能够 缩短 TDD系统帧结构的变动周期, 更好地支持非对称业务的传输。 附图说明
图 1为本发明实施例实现 TDD系统动态帧结构分配的方法的流程示意 图;
图 2为本发明实施例动态指示 UE的 PUSCH帧结构的示意图; 图 3为本发明实施例动态指示 UE的 PDSCH帧结构的示意图; 图 4为本发明实施例中帧结构由 0切换到 2时的帧结构示意图; 图 5为本发明实施例实现 TDD系统动态帧结构分配的系统的结构示意 图。 具体实施方式
本发明的基本思想是: eNB向 UE发送进入动态配置帧结构状态的 RRC 指令, 并在 PDCCH发送帧结构的配置信息; UE接收所述 RRC指令后, 检测 PDCCH中帧结构的配置信息,根据检测到的配置信息, 配置下一个配 置周期采用的帧结构。
下面通过附图及具体实施例对本发明实施例做进一步的详细说明。 本发明实施例实现一种 TDD系统动态帧结构分配的方法,如图 1所示, 该方法包括以下几个步驟:
步驟 101 : eNB向 UE发送进入动态配置帧结构状态的 RRC指令; 本步驟中, 所述 RRC指令为 SIB信息广播信令或 UE专有 RRC信令, 所述 SIB信息广播信令或 UE专有 RRC指令携带与 UE预先约定的进入动 态配置帧结构状态的标识或信息;
所述 UE 专有 RRC 信令可以是信道状态指示-参考信号 (CSI-RS , Channel State Indicator-Reference Signal )的配置指令或信道状态指示( CSI, Channel State Indicator )反馈的周期指令等。
步驟 102: eNB在 PDCCH发送帧结构的配置信息;
具体的, eNB重用 PDCCH子帧的 DCI比特位, 在重用的 DCI比特位 或重新定义的 DCI比特位设置帧结构的配置信息;
进一步的,所述发送帧结构的配置信息的 PDCCH可以位于预定义的下 行子帧, 例如下行子帧 5或下行子帧 8;
所述重用 DCI比特位一般是 ULI或 DAI比特位; 所述 ULI或 DAI比 特位均为两比特,在 ULI或 DAI比特位设置帧结构的配置信息如表 2所示; 例如, 在指示 UE的物理上行共享信道(PUSCH, Physical Uplink Shared CHannel )帧结构时, 预定义^ 1 , eNB设置 ULI=11 , 其中, v = 1表示 每个接受响应 /不接受响应 (ACK/NACK )只针对一个 PUSCH, ULI=11表 示帧结构的配置信息为 11; 具体实例如图 2所示, 当前 PUSCH帧结构为 帧结构 1 , eNB设置帧结构 1中第二个 PDCCH子帧的 DAI比特位为 01 , 指示 UE下一个配置周期的 PUSCH帧结构采用帧结构 0, 在 PUSCH帧结 构采用帧结构 0时, eNB设置帧结构 0中第一个 PDCCH子帧的 ULI比特 位为 11 , 指示 UE下一个配置周期的 PUSCH帧结构采用帧结构 6;
在指示 UE的物理下行共享信道(PDSCH, Physical Downlink Shared CHannel ) 帧结构时, eNB设置 DAI=11 , 表示帧结构的配置信息为 11; 具 体实例如图 3所示, 当前 PDSCH帧结构为帧结构 1 , eNB设置帧结构 1中 第一个 PDCCH子帧的 DAI比特位为 01 ,指示 UE下一个配置周期的 PDSCH 帧结构采用帧结构 0, 在 PDSCH帧结构采用帧结构 0时, eNB设置帧结构 0中第一个 PDCCH子帧的 DAI比特位为 11 , 指示 UE下一个配置周期的 PDSCH帧结构采用帧结构 6; 这里, 对于当前帧结构 1~5, 连续 PDCCH子 帧被分配给一个 UE时, 使用最后一个 PDCCH子帧前的任意 PDCCH子帧 的 DAI信息设置帧结构的配置信息。 配置信息
00 01 10 11
当前帧结构
0 0 1 2 6
1 1 0 2 6
2 2 0 1 6 3 3 0 4 5
4 4 3 5 6
5 5 0 3 4
表 2
通过表 2可以看出, 帧结构 0、 1、 2、 6之间可以相互切换, 帧结构 3、 4、 5之间可以相互切换, 帧结构 3、 4、 5可以通过一次或 2次切换成为帧 结构 0、 1、 2、 6, 但帧结构 0、 1、 2、 6不可以向帧结构 3、 4、 5切换。
所述重新定义的 DCI 比特位用于指示帧结构的配置信息, 可以与
DCI0/1/1A/1B/1D/2/2A/2B/2C的长度相同,一般放置在与目前 3GPP标准不 兼容的 PDCCH子帧位置,以区分该新的 DCI比特位和传统的 DCI比特位。
本步驟中, 帧结构 0的目标切换帧结构需要支持 2倍的物理混合重传 指示信道(PHICH )资源组, 所述目标切换帧结构包括帧结构 1、 2、 6, 如 图 4所示, 由帧结构 0切换到帧结构 2时, 帧结构 2中第四个子帧需要支 持 2倍的 PHICH资源组的子帧。
步驟 103: UE接收进入动态配置帧结构状态的 RRC 指令后, 检测 PDCCH中帧结构的配置信息, 根据检测到的配置信息, 配置下一个配置周 期采用的帧结构。
上述方法还包括: eNB在物理广播信道(PBCH )保留的两个比特位设 置帧结构的配置信息, 这样, UE可以尽早的 (在解调 PDCCH之前)获知 下一个配置周期采用的帧结构, 并且没有增加冗余比特位;
当帧结构的跳变周期大于 40ms ( 40ms的整数倍)时, 可以联合使用多 次 PBCH传输中的冗余比特设置帧结构的配置信息, 以支持更多的帧结构 if兆变格式。
为了实现上述方法, 本发明实施例还提供一种 TDD系统动态帧结构分 配的系统, 如图 5所示, 该系统包括: eNB 51和 UE 52, 其中 ,
eNB 51 , 配置为向 UE 52发送进入动态配置帧结构状态的 RRC指令, 并在 PDCCH发送帧结构的配置信息;
UE 52, 配置为接收所述 RRC指令后, 检测 PDCCH中帧结构的配置 信息, 根据检测到的配置信息, 配置下一个配置周期采用的帧结构;
所述 eNB 51包括: 状态通知模块 511和配置模块 512; 其中, 状态通知模块 511 , 配置为向 UE 52发送进入动态配置帧结构状态的
RRC指令 ^
配置模块 512, 配置为在 PDCCH发送帧结构的配置信息;
所述 RRC指令为 SIB信息广播信令或 UE专有 RRC信令, 其中携带 eNB 51与 UE 52预先约定的进入动态配置帧结构状态的标识或信息;
所述配置模块 512, 具体配置为重用 DCI比特位, 在重用的 DCI比特 位设置帧结构的配置信息;
所述重用 DCI比特位一般是重用 ULI或 DAI比特位;所述 ULI或 DAI 比特位均为两比特, 在 ULI或 DAI比特位设置帧结构的配置信息如表 2所 示。
所述配置模块 512, 具体配置为重新定义 DCI比特位, 在重新定义的
DCI比特位设置帧结构的配置信息;
所述发送帧结构的配置信息的 PDCCH可以位于预定义的下行子帧,例 口子帧 5或子帧 8。
基于上述系统,本发明还提供一种 eNB,如图 5所示,该 eNB 51包括: 状态通知模块 511和配置模块 512; 其中,
状态通知模块 511 , 配置为向 UE 52发送进入动态配置帧结构状态的 RRC指令 ^
配置模块 512, 配置为在 PDCCH发送帧结构的配置信息;
所述 RRC指令为 SIB信息广播信令或 UE专有 RRC信令, 其中携带 eNB 51与 UE 52预先约定的进入动态配置帧结构状态的标识或信息; 所述配置模块 512, 具体配置为重用 DCI比特位, 在重用的 DCI比特 位设置帧结构的配置信息;
所述重用 DCI比特位一般是重用 ULI或 DAI比特位;所述 ULI或 DAI 比特位均为两比特, 在 ULI或 DAI比特位设置帧结构的配置信息如表 2所 示。
所述配置模块 512, 具体配置为重新定义 DCI比特位, 在重新定义的 DCI比特位设置帧结构的配置信息;
所述发送帧结构的配置信息的 PDCCH可以位于预定义的下行子帧,例 口子帧 5或子帧 8。
综上所述, eNB在 PDCCH发送帧结构的配置信息, 并发送进入动态 配置帧结构状态的 RRC指令通知 UE, UE根据帧结构的配置信息, 配置下 一个配置周期采用的帧结构, 这样能够缩短 TDD系统帧结构的变动周期, 更好地支持非对称业务的传输。
以上所述, 仅为本发明的较佳实施例而已, 并非用于限定本发明的保 护范围。

Claims

权利要求书
1、 一种时分双工(TDD ) 系统动态帧结构分配方法, 其中, 该方法包 括:
演进基站(eNB ) 向用户设备 ( UE )发送进入动态配置帧结构状态的 无线资源控制协议 ( RRC )指令, 并在物理下行控制信道(PDCCH )发送 帧结构的配置信息;
所述 UE接收所述 RRC指令后, 检测 PDCCH中帧结构的配置信息, 根据检测到的配置信息, 配置下一个配置周期采用的帧结构。
2、 根据权利要求 1所述的方法, 其中, 所述 RRC指令为系统信息块 ( SIB )信息广播信令或 UE专有 RRC指令, 所述 SIB信息广播信令或 UE 专有 RRC指令携带 eNB与 UE预先约定的进入动态配置帧结构状态的标识 或信息。
3、 根据权利要求 1所述的方法, 其中, 所述 eNB在 PDCCH发送帧结 构的配置信息为: eNB 重用下行控制信息 (DCI ) 比特位, 在重用的 DCI 比特位设置帧结构的配置信息。
4、 根据权利要求 1所述的方法, 其中, 所述 eNB在 PDCCH发送帧结 构的配置信息为: eNB重新定义 DCI比特位, 在重新定义的 DCI比特位设 置帧结构的配置信息。
5、 根据权利要求 1所述的方法, 其中, 所述发送帧结构的配置信息的 PDCCH位于预定义的下行子帧。
6、 根据权利要求 3所述的方法, 其中, 所述重用 DCI比特位为: 重用 上行索引 (ULI )或下行分配指示 (DAI ) 比特位。
7、 一种 TDD系统动态帧结构分配系统, 其中, 该系统包括: eNB和 UE, 其中, eNB, 配置为向 UE发送进入动态配置帧结构状态的 RRC指令, 并在 PDCCH发送帧结构的配置信息; UE,配置为接收所述 RRC指令后,检测 PDCCH中帧结构的配置信息, 根据检测到的配置信息, 配置下一个配置周期采用的帧结构。
8、 根据权利要求 7所述的系统, 其中, 所述 RRC指令为 SIB信息广 播信令或 UE专有 RRC指令,所述 SIB信息广播信令或 UE专有 RRC指令 携带 eNB与 UE预先约定的进入动态配置帧结构状态的标识或信息。
9、 根据权利要求 7所述的系统, 其中, 所述 eNB包括: 状态通知模块 和配置模块; 其中,
状态通知模块, 配置为向 UE发送进入动态配置帧结构状态的 RRC指 令;
配置模块, 配置为在 PDCCH发送帧结构的配置信息。
10、 根据权利要求 9所述的系统, 其中, 所述配置模块, 配置为重用 DCI比特位, 在重用的 DCI比特位设置帧结构的配置信息。
11、 根据权利要求 9所述的系统, 其中, 所述发送帧结构的配置信息 的 PDCCH位于预定义的下行子帧。
12、 根据权利要求 10所述的系统, 其中, 所述重用 DCI比特位为: 重 用 ULI或 DAI比特位。
13、 一种 eNB, 其中, 该 eNB包括: 状态通知模块和配置模块; 其中, 状态通知模块, 配置为向 UE发送进入动态配置帧结构状态的 RRC指 令; 配置模块, 配置为在 PDCCH发送帧结构的配置信息。
14、 根据权利要求 13所述的 eNB, 其中, 所述配置模块, 配置为重用
DCI比特位, 在重用的 DCI比特位设置帧结构的配置信息。
15、 根据权利要求 13所述的 eNB, 其中, 所述发送帧结构的配置信息 的 PDCCH位于预定义的下行子帧。
16、 根据权利要求 13所述的 eNB, 其中, 所述重用 DCI比特位为: 重 用 ULI或 DAI比特位。
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