WO2012000276A1

WO2012000276A1 - Method for radio frame transmission and base station in wimax system

Info

Publication number: WO2012000276A1
Application number: PCT/CN2010/078882
Authority: WO
Inventors: 陈宪明; 关艳峰; 宁丁; 鲁照华; 谢峰; 方惠英
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2010-06-30
Filing date: 2010-11-18
Publication date: 2012-01-05
Anticipated expiration: 2012-12-30
Also published as: CN102315877A

Abstract

The present invention discloses a method for radio frame transmission and a base station in a Worldwide Interoperability for Microwave Access (Wimax) system. The method includes the following steps of: obtaining the frame timing and frame structure information of a Time Division Duplexing-Long Term Evolution (TDD-LTE) system (S10); transmitting, by the Wimax system, a downlink subframe of the radio frame in the way of aligning the downlink subframe to the uplink and downlink time periods reflected by the frame timing and frame structure information (S20); wherein, the clock of the Wimax system is synchronous with that of the TDD-LTE system, the coverage area of the Wimax system completely or partially overlaps that of the TDD-LTE system, and the Wimax system uses the radio frequency band which is adjacent to the frequency band of the TDD-LTE system. The present invention avoids serious uplink and downlink interferences, guarantees the normal work of the system, and allows coexistence of a Wimax system and a TDD-LTE system which has a different radio frame structure.

Description

Wimax系统的无线帧发射方法和基站技术领域本发明涉及移动通信领域，尤其涉及 Wimax系统的无线帧发射方法和基站。背景技术目前，已经或即^ ¹商用的 TDD ( Time Division Duplexing, 时分双工）系统包括：中国第三代移动通信标准 TD-SCDMA ( Time Division-Synchronized Code Division Multiple Access, 时分同步码分多址接入 ), Wimax ( Worldwide Interoperability for Microwave Access, 全球微波接入互操作性，又称 IEEE 802.16标准或宽带无线接入标准 ), TDD-LTE ( Time Division Duplexing "Long Term Evolution, 时分双工长期演进) 等。 TECHNICAL FIELD The present invention relates to the field of mobile communications, and in particular, to a radio frame transmission method and a base station of a Wimax system. Background Art At present, i.e., ^ ^1, or commercial TDD (Time Division Duplexing, time division duplex) system comprising: China third generation mobile communication standards TD-SCDMA (Time Division-Synchronized Code Division Multiple Access, Time Division Synchronous Code Division Multiple Access Access), Wimax ( Worldwide Interoperability for Microwave Access, also known as IEEE 802.16 standard or broadband wireless access standard), TDD-LTE (Time Division Duplexing "Long Term Evolution, Time Division Duplex Long Term Evolution ) Wait.

Wimax系统的帧结构，如图 1所示，该结构的一个无线帧里面存在一个下行子帧和一个上行子帧，包括两个转换间隔，即 TTG ( Transmit/Receive Transition Gap, 发送 /接收转换间隔，又称为下行到上行转换时间）和 RTG ( Receive/Transmit Transition Gap, 接) 发送转换间隔，又称为上行到下行转换时间），其中 TTG位于同一无线帧的下行子帧和上行子帧之间，其位置可以按照上下行业务比例灵活分配， RT G位于一个无线帧的上行子帧和下一个无线帧的下行子帧之间。其中，上述 Wimax 系统包括 Wimax 的接入网和核心网的所有网元， Wimax接入网网元包括： BS ( Base Station,基站；)、 ASN-GW ( Access Service Network-Gate Way , 接入业务网络网关）， Wimax 核心网网元包括： AAA ( Authentication、 Authorization、 Account, 认证、 ·ί受权、计费）月艮务器。 The frame structure of the Wimax system, as shown in Figure 1, there is one downlink subframe and one uplink subframe in one radio frame of the structure, including two conversion intervals, namely TTG (Transmit/Receive Transition Gap) , also referred to as the downlink to uplink transition time) and the RTG (Receive/Transmit Transition Gap) transmission conversion interval, also referred to as the uplink to downlink transition time, where the TTG is located in the downlink subframe and the uplink subframe of the same radio frame. The location of the uplink and downlink services is flexibly allocated. The RT G is located between the uplink subframe of one radio frame and the downlink subframe of the next radio frame. The Wimax system includes the access network of the Wimax and all the network elements of the core network, and the Wimax access network element includes: BS (Base Station, base station;), ASN-GW (Access Service Network-Gate Way, access service) Network gateway), Wimax core network elements include: AAA (Authentication, Authorization, Account, Authentication, · Authenticated, Billing) server.

TDD-LTE系统的第一种帧结构，对应于 TDD-LTE帧结构配置索引 0、 1、 2和 6, 如图 2所示，该结构的一个无线帧里面至少存在两个下行子帧和两个上行子帧，且两个半帧的结构相同，包括两个发送 /接收转换间隔，即 GP ( Guard Period, 保护时间，又称为下行到上行转换时间），其中第一个 GP 位于同一无线帧第一个半帧特殊子帧的 DwPTS ( Downlink Pilot Time Slot, 下行导频时隙）和 UpPTS ( Uplink Pilot Time Slot, 上行导频时隙）之间，第二个 GP位于同一无线帧第二个半帧特殊子帧的 DwPTS和 UpPTS之间。 The first frame structure of the TDD-LTE system corresponds to the TDD-LTE frame structure configuration indexes 0, 1, 2, and 6. As shown in FIG. 2, at least two downlink subframes and two are present in one radio frame of the structure. One uplink subframe, and the two subframes have the same structure, including two transmit/receive transition intervals, that is, GP (Guard Period, also known as downlink to uplink transition time), where the first GP is located in the same wireless Between the DwPTS (Downlink Pilot Time Slot) and the UpPTS (Uplink Pilot Time Slot) of the first subframe of the first half of the frame, The two GPs are located between the DwPTS and the UpPTS of the second subframe special subframe of the same radio frame.

TDD-LTE系统的第二种帧结构，对应于 TDD-LTE帧结构配置索引 3、 4 和 5 , 如图 3所示，该结构的一个无线帧里面至少存在六个下行子帧和一个上行子帧，且两个半帧的结构不同，第二个半帧全部被用于下行传输，只包括一个 GP , 位于同一无线帧第一个半帧特殊子帧的 DwPTS和 UpPTS之间。具体的 TDD-LTE帧结构配置如表 1 所示，其中， D表示下行子帧， U 表示上行子帧， S表示由 DwPTS、 GP和 UpPTS构成的特殊子帧。表 1 TDD-LTE帧结构配置 The second frame structure of the TDD-LTE system corresponds to the TDD-LTE frame structure configuration indexes 3, 4, and 5. As shown in FIG. 3, at least six downlink subframes and one uplink sub-frame exist in one radio frame of the structure. The frame, and the structure of the two fields are different. The second field is all used for downlink transmission, and only includes one GP, which is located between the DwPTS and the UpPTS of the special subframe of the first field of the same radio frame. The specific TDD-LTE frame structure configuration is shown in Table 1, where D represents a downlink subframe, U represents an uplink subframe, and S represents a special subframe composed of DwPTS, GP, and UpPTS. Table 1 TDD-LTE frame structure configuration

具体的 TDD-LTE特殊子帧的某一配置实例如表 2所示，由于特殊子帧的长度与其它子帧相同，固定为 1ms ( millisecond, 毫秒）时长，因此，通过表 2中的 DwPTS和 UpPTS时长能够间接确定 GP的时长。表 2 TDD-LTE 特殊子帧上下行时间 A specific configuration example of a specific TDD-LTE special subframe is shown in Table 2. Since the length of the special subframe is the same as other subframes, it is fixed to 1 ms (millisecond), so the DwPTS and Table 2 are used. The UpPTS duration can indirectly determine the duration of the GP. Table 2 TDD-LTE special subframe uplink and downlink times

为满足用户对多媒体等业务的需求，实现高速的无线互联网接入，各移动运营商逐渐地并有所侧重的开始部署 Wimax或者 TDD -LTE 网络。随着 Wimax与 TDD-LTE网络覆盖范围的不断扩大，可能导致在同一区域内同时部署了这两种系统，即它们的覆盖范围可能完全重叠（相同站址）或部分重叠（不同站址），尤其是 Wimax与 TDD-LTE 网络的频谱相同或相邻时，共存问题，即这两种系统无线帧上下行时间段的对齐问题将不得不被考虑。如果 Wimax与 TDD-LTE系统的上下行时间段不能对齐，系统之间将会存在严重的同频千扰，从而影响系统之间的正常工作。 TDD-LTE系统主要存在两种帧结构，并且每种帧结构存在多种配置。发明人发现使用相关技术的 Wimax系统的无线帧，仅能够与具有典型帧结构配置的 TDD-LTE 系统的无线帧的上下行时间段对齐，无法与具有特殊帧结构配置的 TDD-LTE系统共存，导致相互之间将会产生严重的千 4尤。发明内容本发明旨在提供 Wimax 系统的无线帧发射方法和基站，可以使 Wimax 系统与具有不同无线帧结构的 TDD-LTE系统共存。根据本发明的一个方面，提供了一种 Wimax系统无线帧的发射方法，包括以下步骤：获取 TDD-LTE系统的帧定时和帧结构信息； Wimax系统以与帧定时和帧结构信息所反映的上下行时间段对齐的方式发射无线帧中的下行子帧；其中， Wimax 系统与 TDD-LTE 系统的时钟保持同步，与 TDD-LTE 系统的覆盖范围完全或者部分重叠，并使用与 TDD-LTE 系统的射频频段相邻的射频频段。根据本发明的另一方面，提供了一种 Wimax系统的基站，包括：获取模块，用于获取 TDD-LTE 系统的帧定时和帧结构信息；发射模块，用于以与帧定时和帧结构信息所反映的上下行时间段对齐的方式发射无线帧中的下行子帧；其中， Wimax 系统与 TDD-LTE 系统的时钟保持同步，与 TDD-LTE 系统的覆盖范围完全或部分重叠，并使用与 TDD-LTE 系统的射频频段相邻的射频频段。本发明将 Wimax系统无线帧的上下行时间段与 TDD-LTE系统对齐，从而避免了严重的上下行千扰，保证了系统的正常工作，允许 Wimax系统与具有不同无线帧结构的 TDD-LTE系统共存。附图说明此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：图 1为 Wimax系统的无线帧结构图；图 2为 TDD-LTE系统的第一种无线帧结构图；图 3为 TDD-LTE系统的第二种无线帧结构图；图 4 为才艮据本发明实施例的 Wimax 系统无线帧和帧配置索引为 0 的In order to meet the needs of users for multimedia services and achieve high-speed wireless Internet access, mobile operators have gradually begun to deploy Wimax or TDD-LTE networks. As the coverage of Wimax and TDD-LTE networks continues to expand, it may result in the simultaneous deployment of both systems in the same area, ie their coverage may overlap completely (same site) or partially Stacking (different sites), especially when the spectrum of Wimax and TDD-LTE networks is the same or adjacent, the coexistence problem, that is, the alignment problem of the uplink and downlink time segments of the two systems will have to be considered. If the uplink and downlink time periods of Wimax and TDD-LTE systems cannot be aligned, there will be serious same-frequency interference between the systems, which will affect the normal operation between the systems. There are mainly two kinds of frame structures in the TDD-LTE system, and there are various configurations for each frame structure. The inventors have found that a radio frame of a Wimax system using the related art can only be aligned with an uplink and downlink time period of a radio frame of a TDD-LTE system having a typical frame structure configuration, and cannot coexist with a TDD-LTE system having a special frame structure configuration. Leading to each other will have a serious thousand 4 especially. SUMMARY OF THE INVENTION The present invention is directed to a wireless frame transmission method and base station of a Wimax system, which can coexist a Wimax system with a TDD-LTE system having a different radio frame structure. According to an aspect of the present invention, a method for transmitting a wireless frame of a Wimax system is provided, comprising the steps of: acquiring frame timing and frame structure information of a TDD-LTE system; and the Wimax system is reflected by frame timing and frame structure information. The downlink subframe in the radio frame is transmitted in a time-slot alignment manner; wherein, the Wimax system is synchronized with the clock of the TDD-LTE system, completely or partially overlaps with the coverage of the TDD-LTE system, and is used with the TDD-LTE system. The RF band adjacent to the RF band. According to another aspect of the present invention, a base station of a Wimax system is provided, including: an acquiring module, configured to acquire frame timing and frame structure information of a TDD-LTE system; and a transmitting module, configured to perform frame timing and frame structure information The reflected uplink and downlink time segments are aligned to transmit downlink subframes in the radio frame; wherein, the Wimax system is synchronized with the clock of the TDD-LTE system, completely or partially overlaps with the coverage of the TDD-LTE system, and is used with TDD - The RF band adjacent to the RF band of the LTE system. The invention aligns the uplink and downlink time segments of the Wimax system radio frame with the TDD-LTE system, thereby avoiding serious uplink and downlink interference, ensuring normal operation of the system, and allowing the Wimax system and the TDD-LTE system with different radio frame structures. coexist. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate, illustrate, Improperly qualified. In the drawings: FIG. 1 is a radio frame structure diagram of a Wimax system; FIG. 2 is a first radio frame structure diagram of a TDD-LTE system; FIG. 3 is a second radio frame structure diagram of a TDD-LTE system; For the Wimax system according to the embodiment of the present invention, the radio frame and frame configuration index is 0.

TDD-LTE系统无线帧上下行对齐的示意图；图 5 为才艮据本发明实施例的 Wimax 系统无线帧和帧配置索引为 1 的 TDD-LTE系统无线帧上下行对齐的示意图；图 6 为才艮据本发明实施例的 Wimax 系统无线帧和帧配置索引为 2 的 TDD-LTE系统无线帧上下行对齐的示意图；图 7 为才艮据本发明实施例的 Wimax 系统无线帧和帧配置索引为 6 的 TDD-LTE系统无线帧上下行对齐的示意图；图 8 为才艮据本发明实施例的 Wimax 系统无线帧和帧配置索引为 3 的 TDD-LTE系统无线帧上下行对齐的示意图；图 9 为才艮据本发明实施例的 Wimax 系统无线帧和帧配置索引为 4 的FIG. 5 is a schematic diagram of uplink and downlink alignment of a radio frame of a TDD-LTE system in a wireless frame and a frame configuration index of a Wimax system according to an embodiment of the present invention; FIG. A schematic diagram of uplink and downlink alignment of a TDD-LTE system radio frame of a Wimax system and a frame configuration index of 2 according to an embodiment of the present invention; FIG. 7 is a WiMAX system radio frame and frame configuration index according to an embodiment of the present invention. FIG. 8 is a schematic diagram of uplink and downlink alignment of a radio frame of a TDD-LTE system with a wireless frame and a frame configuration index of 3 according to an embodiment of the present invention; FIG. For the Wimax system according to the embodiment of the present invention, the radio frame and frame configuration index is 4

TDD-LTE系统无线帧上下行对齐的示意图；图 10 为才艮据本发明实施例的 Wimax 系统无线帧和帧配置索引为 5 的 TDD-LTE系统无线帧上下行对齐的示意图；图 11是才艮据本发明实施例的 Wimax系统的无线帧发射方法的流程图；图 12是根据本发明实施例的 Wimax系统的基站的示意图。具体实施方式下文中将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面结合附图和具体实施方法对本发明故进一步详细说明。本发明应用于 Wimax 系统与 TDD-LTE 系统共存的情况，如前所述， Wimax系统的帧结构如图 1所示， TDD-LTE系统的第一种帧结构如图 2所示，第二种帧结构如图 3所示。两个系统可以釆用相邻的频段，主要是考虑接入网络（或帧结构）的共存，并且可以物理上在一个地方放置属于两个系统的两套设备。 Wimax系统的帧长为 5ms或 10ms, TDD-LTE系统的帧长固定为 10ms,每个半帧的长度固定为 5ms,特殊子帧中的 DwPTS、GP和 UpPTS 持续时间可以基站动态配置，且 DwPTS属于下行时间段的一部分， UpPTS 属于上行时间段的一部分。图 11是才艮据本发明实施例的 Wimax系统的无线帧发射方法的流程图，包括：步骤 S 10 , 获取 TDD-LTE系统的帧定时和帧结构信息；步 4聚 S20, Wimax系统以与帧定时和帧结构信息所反映的上下行时间段对齐的方式发射无线帧中的下行子帧；其中， Wimax系统与 TDD-LTE系统的时钟保持同步，与 TDD-LTE系统的覆盖范围完全或部分重叠，并使用与 TDD-LTE 系统的射频频段相邻的射频频段。本实施例在部署 Wimax系统时，对其无线帧的帧长，下行子帧和上行子帧的长度，下行到上行转换时间长度，上行到下行的转换时间长度以及无线帧的发射时刻进行设置，从而使 Wimax系统在帧结构上与 TDD-LTE系统兼容。本实施例将 Wimax系统与 TDD-LTE系统的无线帧上下行时间段对齐，从而避免了严重的上下行千扰，保证了系统的正常工作，允许 Wimax系统与具有不同无线帧结构的 TDD-LTE系统共存。优选地，获取 TDD-LTE系统的帧定时包括：获取 TDD-LTE系统的无线帧的起始时刻。应该注意，一个无线帧的起始时刻就是上个无线帧的结束时刻。另夕卜，可以直接获取到起始时刻，也可以获取相关信息以确定起始时刻。优选地，通过 Wimax系统的接入网、核心网、或后台月艮务，或通过人为的对 Wimax系统的配置获取 TDD-LTE系统的帧定时和帧结构信息。该实施例中的接入网或者核心网可以是逻辑功能，也可以是物理网元。优选地，步骤 S 10包括： Wimax系统接收到通知，该通知指示 TDD-LTE 系统的帧定时和 /或帧结构信息发生变化； Wimax 系统才艮据该通知重新获取 TDD-LTE系统当前的帧定时和 /或帧结构信息。在 TDD-LTE系统无线帧的帧定时和 /或帧结构信息发生变化时刻之前，可以提前通知 Wimax 系统，提前的时间应大于等于设定的切换准备时间。这实现了动态更新的效果。优选地，与帧定时和帧结构信息所反映的上下行时间段对齐包括： Wimax 系统的下行时间段（下行子帧）和 /或空闲时间段 (下行到上行转换时间和上行到下行转换时间）处于 TDD-LTE系统的下行时间段内， Wimax系统的上行时间段（上行子帧）和 /或空闲时间段（下行到上行转换时间和上行到下行转换时间）处于 TDD-LTE系统的上行时间段内。即， Wimax系统的上下行时间段分别被 TDD-LTE系统的上下行时间段包含。这可以确保对齐。优选地，步骤 S20包括： Wimax系统以与帧定时和帧结构信息所反映的上下行时间段对齐的方式配置无线帧及其发射时刻； Wimax系统在发射时刻发射下行子帧。该方案简单易行。优选地，在上述的方法中，配置无线帧包括：配置无线帧的帧长，下行子帧的长度，无线帧的上行子帧的长度，无线帧的空闲时间段长度。优选地，配置无线帧的空闲时间段长度包括：配置无线帧的下行到上行的转换时间长度以及无线帧的上行到下行的转换时间长度。该方案简单易行。优选地，在上述的方法中，配置无线帧还包括：配置下行子帧的控制信息中携带无线帧的空闲时间段信息和 /或无线帧的非空闲时间段对应的时频资源信息。该方案简单易行。优选地，获取 TDD-LTE系统的帧结构信息包括：获取到 TDD-LTE系统的特殊子帧配置索引，并获取到 TDD-LTE系统的帧结构配置索引为 0、 1、或 2 , 配置无线帧及其发射时刻包括：配置无线帧的帧长为 5毫秒，下行子帧的长度等于 TDD-LTE 系统的一个半帧的下行时间段长度，上行子帧的长度与上行到下行的转换时间长度之和等于 TDD-LTE 系统的一个半帧的上行时间段长度，下行到上行的转换时间长度等于 TDD-LTE系统的保护时隙 GP 长度，无线帧的发射时刻相对于 TDD-LTE 系统每个半帧的发射时刻的偏置的长度为 TDD-LTE系统 N个子帧的持续时间，其中 N等于 0、 1或 2; 其中，根据特殊子帧配置索引确定 DwPTS长度（进而确定 TDD-LTE系统的无线帧的下行时间段长度）、 UpPTS长度（进而确定 TDD-LTE系统的无线帧的上行时间段长度）、和 GP长度。借助于表 1和表 2, 利用帧结构配置索引就可以确定 TDD-LTE 系统的上下行时间段，从而实现对齐，该方案简单易行。本实施例实现了 Wimax系统与帧结构配置索引为 0、 1、 2的 TDD-LTE系统的兼容。优选地，在上述的方法，其特征在于：获取 TDD-LTE 系统的帧结构信息包括：获取到 TDD-LTE系统的特殊子帧配置索引，并获取到 TDD-LTE系统的帧结构配置索引为 6, 配置无线帧及其发射时刻包括：配置无线帧的帧长为 5毫秒，下行子帧的长度等于 TDD-LTE系统的无线帧的第一个半帧的下行时间段长度，上行子帧的长度等于 TDD-LTE 系统的无线帧的第二个半帧的上行时间段长度，下行到上行的转换时间长度等于 TDD-LTE系统的 GP 长度，上行到下行转换时间的长度等于 TDD-LTE 系统的一个子帧的长度，无线帧的发射时刻相对于 TDD-LTE 系统的半帧的发射时刻的偏置的长度为 0; 其中，根据特殊子帧配置索引确定 DwPTS长度（进而确定 TDD-LTE系统的无线帧的下行时间段长度）、 UpPTS长度（进而确定 TDD-LTE系统的无线帧的上行时间段长度）、和 GP长度。本实施例实现了 Wimax系统与帧结构配置索引为 6的 TDD-LTE系统的兼容。优选地，在上述的方法中，获取 TDD-LTE 系统的帧结构信息包括：获取到 TDD-LTE系统的特殊子帧配置索引，并获取到 TDD-LTE系统的帧结构配置索引为 3、 4、或 5 , 配置无线帧及其发射时刻包括：配置无线帧的帧长为 10毫秒，下行子帧的长度等于 TDD-LTE系统的无线帧的下行时间段长度，上行子帧的长度和上行到下行的转换时间长度之和等于 TDD-LTE 系统的无线帧的上行时间段长度，下行到上行的转换时间长度等于 TDD-LTE 系统的 GP长度，无线帧的发射时刻相对于 TDD-LTE系统的无线帧的发射时刻的偏置的长度为 TDD-LTE系统的 N个子帧的持续时间，其中 N等于 3、 4或 5; 其中，根据特殊子帧配置索引确定 DwPTS长度（进而确定 TDD-LTE系统的无线帧的下行时间段长度）、 UpPTS长度（进而确定 TDD-LTE系统的无线帧的上行时间段长度）、和 GP长度。本实施例实现了 Wimax系统与帧结构配置索引为 3、 4、 5的 TDD-LTE系统的兼容。下面描述的是获取的 TDD-LTE 系统的帧结构信息不相同时的多个实施例。实施例一获取到 TDD-LTE系统的帧结构配置索引为 0, TDD-LTE系统的特殊子帧配置索引为 0, 这种情况下，两个半帧的结构相同，且每个半帧后面的三个子帧，即编号为 2、 3、 4、 7、 8、 9 的子帧被用于上行传输，每个半帧的第一个子帧，再加上后面的 DwPTS (对于特殊子帧配置索引 0, 其时长为 214.58微秒）为该半帧的下行时间段，每个半帧的 UpPTS (对于特殊子帧配置索引 0, 其时长为 71.35微秒），再加上后面的三个子帧为该半帧的上行时间段。在部署 Wimax 系统时，可以使 5ms 帧长的 Wimax 系统兼容上述 TDD-LTE系统，如图 4所示，将 Wimax无线帧下行子帧与 TDD-LTE无线帧某个半帧的第一个下行子帧对齐，另外， Wimax无线帧下行子帧（下行时间段）长度等于 TDD-LTE系统某个半帧的下行时间段长度，并且使 Wimax无线帧下行到上行转换时间（ TTG ) 等于 TDD-LTE保护时隙（ GP , 对于特殊子帧配置索引 0其时长为 714.07 啟秒；)，最后使 Wimax无线帧上行子帧（上行时间段）和上行到下行转换时间（RTG ) 长度之和等于 TDD-LTE 系统某个半帧的上行时间段长度。这样就实现了 Wimax 系统的无线帧结构和 TDD-LTE系统的无线帧结构的完全对齐，这两个系统在帧结构上就能完全兼容而不会产生千扰。实施例二获取到 TDD-LTE系统的帧结构配置索引为 1 , TDD-LTE系统的特殊子帧配置索引为 0, 这种情况下，两个半帧的结构相同，且每个半帧特殊子帧后面的两个子帧，即编号为 2、 3、 7、 8 的子帧被用于上行传输，每个半帧的最后一个子帧，即编号为 4和 9的子帧被用于下行传输，每个半帧的第一个子帧加上后面的 DwPTS(对于特殊子帧配置索引 0,其时长为 214.58 ^啟秒；)，再加上该半帧的最后一个子帧为该半帧的下行时间段，每个半帧的 UpPTS (对于特殊子帧配置索引 0, 其时长为 71.35 ^啟秒），再加上后面的两个子帧为该半帧的上行时间段。在部署 Wimax 系统时，可以使 5ms 帧长的 Wimax 系统兼容上述FIG. 10 is a schematic diagram of uplink and downlink alignment of a radio frame of a TDD-LTE system in a Wimax system and a frame configuration index of 5 according to an embodiment of the present invention; FIG. A flowchart of a radio frame transmission method of a Wimax system according to an embodiment of the present invention; and FIG. 12 is a schematic diagram of a base station of a Wimax system according to an embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The present invention is applied to the case where the Wimax system coexists with the TDD-LTE system. As described above, the frame structure of the Wimax system is as shown in FIG. 1, and the first frame structure of the TDD-LTE system is as shown in FIG. 2, and the second The frame structure is shown in Figure 3. Two systems can use adjacent frequency bands, mainly considering the coexistence of access networks (or frame structures), and can physically place two sets of devices belonging to two systems in one place. The frame length of the Wimax system is 5ms or 10ms, the frame length of the TDD-LTE system is fixed to 10ms, the length of each field is fixed to 5ms, and the DwPTS, GP and UpPTS durations in the special subframe can be dynamically configured by the base station, and DwPTS Part of the downlink time period, UpPTS is part of the uplink time period. 11 is a flowchart of a method for transmitting a radio frame of a Wimax system according to an embodiment of the present invention, including: Step S10, acquiring frame timing and frame structure information of a TDD-LTE system; Step 4: S20, Wimax system with The downlink subframe in the radio frame is transmitted in a manner that the frame timing and the uplink and downlink time segments are reflected by the frame structure information; wherein, the Wimax system is synchronized with the clock of the TDD-LTE system, and the coverage of the TDD-LTE system is completely or partially Overlap and use the RF band adjacent to the RF band of the TDD-LTE system. In the embodiment, when the Wimax system is deployed, the length of the frame of the radio frame, the length of the downlink subframe and the uplink subframe, the length of the downlink to uplink transition, the length of the uplink to downlink transition, and the transmission timing of the radio frame are set. Thereby the Wimax system is compatible with the TDD-LTE system in the frame structure. In this embodiment, the Wimax system is aligned with the uplink and downlink time segments of the TDD-LTE system, thereby avoiding serious uplink and downlink interference, ensuring normal operation of the system, and allowing the Wimax system and TDD-LTE having different radio frame structures. The system coexists. Preferably, acquiring the frame timing of the TDD-LTE system comprises: acquiring a start time of the radio frame of the TDD-LTE system. It should be noted that the starting moment of a radio frame is the end time of the last radio frame. In addition, the starting time can be directly obtained, and related information can also be obtained to determine the starting time. Preferably, the frame timing and frame structure information of the TDD-LTE system is obtained through an access network, a core network, or a background server of the Wimax system, or by artificial configuration of the Wimax system. The access network or the core network in this embodiment may be a logical function or a physical network element. Preferably, step S10 includes: the Wimax system receives a notification indicating that the frame timing and/or frame structure information of the TDD-LTE system changes; the Wimax system reacquires the current frame timing of the TDD-LTE system according to the notification. And/or frame structure information. The Wimax system may be notified in advance before the frame timing of the radio frame of the TDD-LTE system and/or the frame structure information changes, and the advance time should be greater than or equal to the set handover preparation time. This achieves the effect of dynamic updates. Preferably, the uplink and downlink time segments reflected by the frame timing and the frame structure information include: a downlink time period (downlink subframe) and/or an idle time period (downlink to uplink transition time and uplink to downlink transition time) of the Wimax system. During the downlink time period of the TDD-LTE system, the uplink time period (uplink subframe) and/or idle time period (downlink to uplink transition time and uplink to downlink transition time) of the Wimax system are in the uplink time period of the TDD-LTE system. Inside. That is, the uplink and downlink time periods of the Wimax system are respectively included in the uplink and downlink time segments of the TDD-LTE system. This ensures alignment. Preferably, step S20 includes: the Wimax system configures the radio frame and its transmission time in a manner aligned with the uplink and downlink time periods reflected by the frame timing and the frame structure information; the Wimax system transmits the downlink subframe at the transmission time. The program is simple and easy. Preferably, in the foregoing method, configuring the radio frame includes: configuring a frame length of the radio frame, a length of the downlink subframe, a length of the uplink subframe of the radio frame, and a length of the idle period of the radio frame. Preferably, configuring the idle period length of the radio frame comprises: configuring a downlink to uplink transition time length of the radio frame and an uplink to downlink transition time length of the radio frame. The program is simple and easy. Preferably, in the foregoing method, the configuring the radio frame further includes: configuring the idle period information of the radio frame in the control information of the downlink subframe and/or the time-frequency resource information corresponding to the non-idle period of the radio frame. The program is simple and easy. Preferably, obtaining the frame structure information of the TDD-LTE system includes: acquiring a special subframe configuration index to the TDD-LTE system, and acquiring a frame structure configuration index of the TDD-LTE system to 0, 1, or 2, and configuring the radio frame And the time of the transmission includes: configuring the frame length of the radio frame to be 5 milliseconds, the length of the downlink subframe is equal to the length of the downlink period of one field of the TDD-LTE system, and the length of the uplink subframe and the length of the uplink to downlink transition time And the length of the uplink time period equal to one field of the TDD-LTE system, the transition time length of the downlink to the uplink is equal to the guard time slot GP length of the TDD-LTE system, and the transmission time of the wireless frame is relative to each field of the TDD-LTE system. The length of the offset of the transmission time is the duration of N subframes of the TDD-LTE system, where N is equal to 0, 1, or 2; wherein, the DwPTS length is determined according to the special subframe configuration index (further determining the radio frame of the TDD-LTE system) Length of the downlink period), the length of the UpPTS (and thus the uplink of the radio frame of the TDD-LTE system) Time period length), and GP length. By means of Table 1 and Table 2, the frame structure configuration index can be used to determine the uplink and downlink time segments of the TDD-LTE system, thereby achieving alignment, and the solution is simple and easy. This embodiment implements compatibility between the Wimax system and the TDD-LTE system with the frame structure configuration index of 0, 1, and 2. Preferably, in the foregoing method, the method for obtaining the frame structure information of the TDD-LTE system includes: acquiring a special subframe configuration index of the TDD-LTE system, and acquiring a frame structure configuration index of the TDD-LTE system is 6 The configuration of the radio frame and the transmission time thereof includes: configuring the frame length of the radio frame to be 5 milliseconds, and the length of the downlink subframe is equal to the length of the downlink period of the first field of the radio frame of the TDD-LTE system, and the length of the uplink subframe. Equal to the uplink time length of the second field of the radio frame of the TDD-LTE system, the length of the downlink to uplink transition time is equal to the GP length of the TDD-LTE system, and the length of the uplink to downlink transition time is equal to one of the TDD-LTE systems. The length of the subframe, the length of the transmission time of the radio frame relative to the transmission time of the half frame of the TDD-LTE system is 0; wherein, the length of the DwPTS is determined according to the special subframe configuration index (thus determining the wireless of the TDD-LTE system) The downlink period length of the frame), the UpPTS length (and thus the uplink period length of the radio frame of the TDD-LTE system), and the GP length. This embodiment implements compatibility between the Wimax system and the TDD-LTE system with a frame structure configuration index of 6. Preferably, in the foregoing method, acquiring the frame structure information of the TDD-LTE system includes: acquiring a special subframe configuration index of the TDD-LTE system, and acquiring a frame structure configuration index of the TDD-LTE system is 3, 4, Or 5, configuring the radio frame and its transmission time includes: configuring the frame length of the radio frame to be 10 milliseconds, the length of the downlink subframe is equal to the length of the downlink period of the radio frame of the TDD-LTE system, the length of the uplink subframe, and the uplink to the downlink The sum of the conversion time lengths is equal to the uplink time length of the radio frame of the TDD-LTE system, the downlink to uplink conversion time length is equal to the GP length of the TDD-LTE system, and the radio frame transmission time is relative to the TDD-LTE system radio frame. The length of the offset of the transmission time is the duration of N subframes of the TDD-LTE system, where N is equal to 3, 4 or 5; wherein the length of the DwPTS is determined according to the special subframe configuration index (thus determining the wireless of the TDD-LTE system) The downlink period length of the frame), the UpPTS length (and thus the uplink period length of the radio frame of the TDD-LTE system), and the GP length. This embodiment implements compatibility between the Wimax system and the TDD-LTE system with frame structure configuration indexes of 3, 4, and 5. Described below are various embodiments when the frame structure information of the acquired TDD-LTE system is different. Embodiment 1 The frame structure configuration index of the TDD-LTE system is 0, and the special subframe configuration index of the TDD-LTE system is 0. In this case, the structure of the two fields is the same, and three subframes after each field are obtained. , that is, the subframes numbered 2, 3, 4, 7, 8, 9 are used for uplink transmission, the first subframe of each field, plus the following DwPTS (for the special subframe configuration index 0, The duration is 214.58 microseconds) is the downlink time period of the field, the UpPTS of each field (the index 0 is configured for the special subframe, the duration is 71.35 microseconds), and the latter three subframes are the half. The uplink time period of the frame. When the Wimax system is deployed, the Wimax system with a 5ms frame length can be compatible with the above TDD-LTE system. As shown in FIG. 4, the Wimax radio frame downlink subframe and the first downlink sub-frame of the TDD-LTE radio frame are used. Frame alignment, in addition, the Wimax radio frame downlink subframe (downlink period) length is equal to the downlink period length of a certain half of the TDD-LTE system, and the Wimax radio frame downlink to uplink transition time (TGG) is equal to TDD-LTE protection. The time slot (GP, for the special subframe configuration index 0, its duration is 714.07 start seconds;), and finally the sum of the Wimax radio frame uplink subframe (uplink period) and the uplink to downlink transition time (RTG) length is equal to TDD-LTE The length of the upstream period of a certain field of the system. In this way, the wireless frame structure of the Wimax system and the wireless frame structure of the TDD-LTE system are completely aligned, and the two systems are fully compatible in the frame structure without causing interference. In the second embodiment, the frame structure configuration index of the TDD-LTE system is 1 and the special subframe configuration index of the TDD-LTE system is 0. In this case, the structure of the two fields is the same, and each half frame special The two subframes following the frame, that is, the subframes numbered 2, 3, 7, and 8 are used for uplink transmission, and the last subframe of each field, that is, the subframes numbered 4 and 9 are used for downlink transmission. , the first subframe of each field is added with the following DwPTS (index 0 for the special subframe, the duration is 214.58 ^ start seconds;), plus the last subframe of the field is the half frame The downlink time period, the UpPTS of each field (the index 0 is configured for the special subframe, the duration is 71.35 ^ start seconds), and the next two subframes are the uplink time period of the field. When deploying a Wimax system, the Wimax system with a 5ms frame length can be made compatible with the above.

TDD-LTE系统，如图 5所示，将 Wimax无线帧下行子帧与 TDD-LTE无线帧某个半帧的最后一个下行子帧对齐，即 Wimax无线帧与 TDD-LTE无线帧的每个半帧存在一个偏置，称为 Wimax无线帧的帧偏置，长度为 TDD-LTE系统一个子帧的持续时间；另外， Wimax无线帧下行子帧（下行时间段）长度等于 TDD-LTE系统某个半帧的下行时间段长度，并且使 Wimax无线帧下行到上行转换时间（TTG ) 等于 TDD-LTE保护时隙（ GP, 对于特殊子帧配置索引 0其时长为 714.07微秒；)，最后使 Wimax无线帧上行子帧（上行时间段 ) 和上行到下行转换时间（RTG ) 长度之和等于 TDD-LTE 系统某个半帧的上行时间段长度。这样就实现了 Wimax系统的无线帧结构和 TDD-LTE系统的无线帧结构的完全对齐，这两个系统在帧结构上就能完全兼容而不会产生千扰。实施例三获取到 TDD-LTE系统的帧结构配置索引为 2, TDD-LTE系统的特殊子帧配置索引为 0, 这种情况下，两个半帧的结构相同，且每个半帧特殊子帧后面的一个子帧，即编号为 2和 7的子帧被用于上行传输，每个半帧的最后两个子帧，即编号为 3、 4、 8、 9 的子帧被用于下行传输，每个半帧的第一个子帧加上后面的 DwPTS(对于特殊子帧配置索引 0,其时长为 214.58 ^啟秒；)，再加上该半帧的最后两个子帧为该半帧的下行时间段，每个半帧的 UpPTS (对于特殊子帧配置索引 0, 其时长为 71.35 ^啟秒），再加上后面的一个子帧为该半帧的上行时间段。在部署 Wimax 系统时，可以使 5ms 帧长的 Wimax 系统兼容上述 TDD-LTE系统，如图 6所示，将 Wimax无线帧下行子帧与 TDD-LTE无线帧某个半帧的第四个子帧（即编号为 3或 8的下行子帧）对齐，即 Wimax无线帧与 TDD-LTE无线帧的每个半帧存在一个偏置，称为 Wimax无线帧的帧偏置，长度为 TDD-LTE系统两个子帧的持续时间；另外， Wimax无线帧下行子帧（下行时间段）长度等于 TDD-LTE 系统某个半帧的下行时间段长度，并且使 Wimax无线帧下行到上行转换时间（ TTG ) 等于 TDD-LTE保护时隙 ( GP, 对于特殊子帧配置索引 0, 其时长为 714.07 ^啟秒），最后使 Wimax无线帧上行子帧（上行时间段）和上行到下行转换时间（RTG ) 长度之和等于 TDD-LTE系统某个半帧的上行时间段长度。这样就实现了 Wimax系统的无线帧结构和 TDD-LTE 系统的无线帧结构的完全对齐，这两个系统在帧结构上就能完全兼容而不会产生千扰。实施例四获取到 TDD-LTE系统的帧结构配置索引为 6, TDD-LTE系统的特殊子帧配置索引为 0, 这种情况下，两个半帧的结构不同，第一个半帧特殊子帧后面的三个子帧，即编号为 2、 3、 4的子帧全部被用于上行传输，而第二个半帧只有特殊子帧后面的两个子帧，即编号为 7和 8的子帧被用于上行传输，第二个半帧的最后一个子帧即编号为 9的子帧是被用于下行传输，每个无线帧第一个半帧的第一个子帧，再加上后面的 DwPTS (对于特殊子帧配置索引 0, 其时长为 214.58微秒）为该半帧的下行时间段，每个无线帧第一个半帧的 UpPTS (对于特殊子帧配置索引 0, 其时长为 71.35 ^啟秒），再加上后面的三个子帧为该半帧的上行时间段，每个无线帧第二个半帧的第一个子帧加上后面的 DwPTS (对于特殊子帧配置索引 0, 其时长为 214.58微秒），再加上该半帧的最后一个子帧为该半帧的下行时间段，每个无线帧第二个半帧的 UpPTS (对于特殊子帧配置索引 0, 其时长为 71.35 ^啟秒），再加上后面的两个子帧为该半帧的上行时间段。在部署 Wimax 系统时，可以使 5ms 帧长的 Wimax 系统兼容上述 TDD-LTE系统，如图 7所示，将 Wimax无线帧下行子帧与 TDD-LTE无线帧某个半帧的第一个子帧（即编号为 0或 5的下行子帧下行）对齐，另夕卜， Wimax 无线帧下行子帧（下行时间段）长度等于 TDD-LTE 系统无线帧第一个半帧的下行时间段长度，并且使 Wimax无线帧下行到上行转换时间（TTG )等于 TDD-LTE保护时隙（GP,对于特殊子帧配置索引 0, 其时长为 714.07 ^啟秒），最后使 Wimax无线帧上行子帧（上行时间段 ) 长度等于 TDD-LTE系统无线帧第二个半帧的上行时间段长度。通过上述方法，最终使位于 Wimax系统无线帧最后的等于 TDD-LTE 系统的一个子帧长度的时间段作为了上行到下行转换时间，不再被使用，等价于 Wimax系统的上行到下行转换时间（ RTG ) 等于 TDD-LTE系统的一个子帧长度。这样就实现了 Wimax系统的无线帧结构和 TDD-LTE 系统的无线帧结构的完全对齐，这两个系统在帧结构上就能完全兼容而不会产生千扰。实施例五获取到 TDD-LTE系统的帧结构配置索引为 3 , TDD-LTE系统的特殊子帧配置索引为 0, 这种情况下，两个半帧的结构不同，第一个半帧特殊子帧后面的三个子帧，即编号为 2、 3、 4的子帧被用于上行传输，而第二个半帧的所有子帧，即编号为 5、 6、 7、 8、 9的子帧全部被用于下行传输，每个无线帧的第一个子帧，加上后面的 DwPTS (对于特殊子帧配置索引 0, 其时长为 214.58 ^啟秒），再加上第二个半帧的所有子帧为该无线帧的下行时间段，每个无线帧的 UpPTS (对于特殊子帧配置索引 0, 其时长为 71.35 ^啟秒）再加上后面的三个子帧为该无线帧的上行时间段。在部署 Wimax 系统时，可以使 10ms 帧长的 Wimax 系统兼容上述 TDD-LTE系统，如图 8所示，将 Wimax无线帧下行子帧与 TDD-LTE无线帧第六个子帧（即编号为 5的下行子帧）对齐，即 Wimax无线帧与 TDD-LTE 无线帧的存在一个偏置，称为 Wimax无线帧的帧偏置，长度为 TDD-LTE系统一个半帧的持续时间；另外 Wimax无线帧下行子帧（下行时间段 )长度等于 TDD-LTE系统无线帧的下行时间段长度，并且使 Wimax无线帧下行到上行转换时间（TTG ) 等于 TDD-LTE保护时隙（ GP, 对于特殊子帧配置索引 0其时长为 714.07微秒）最后，使 Wimax无线帧上行子帧（上行时间段 )和上行到下行转换时间（RTG ) 长度之和等于 TDD-LTE 系统无线帧的上行时间段长度。这样就实现了 Wimax系统的无线帧结构和 TDD-LTE系统的无线帧结构的完全对齐，这两个系统在帧结构上就能完全兼容而不会产生千扰。实施例六获取到 TDD-LTE系统的帧结构配置索引为 4, TDD-LTE系统的特殊子帧配置索引为 0, 这种情况下，两个半帧的结构不同，第一个半帧特殊子帧后面的两个子帧，即编号为 2和 3的子帧被用于上行传输，第一个半帧最后一个子帧，即编号为 4的子帧被用于下行传输，而第二个半帧的所有子帧，即编号为 5、 6、 7、 8、 9的子帧全部被用于下行传输，每个无线帧的第一个子帧，加上后面的 DwPTS (对于特殊子帧配置索引 0,其时长为 214.58 ^啟秒），加上第一个半帧的最后一个子帧，再加上第二个半帧的所有子帧为该无线帧的下行时间段，每个无线帧的 UpPTS (对于特殊子帧配置索引 0, 其时长为 71.35微秒），再加上后面的两个子帧为该无线帧的上行时间段。在部署 Wimax 系统时，可以使 10ms 帧长的 Wimax 系统兼容上述 TDD-LTE系统，如图 9所示，将 Wimax无线帧下行子帧与 TDD-LTE无线帧第五个子帧 (即编号为 4的下行子帧）对齐，即 Wimax无线帧与 TDD-LTE 无线帧的存在一个偏置，称为 Wimax无线帧的帧偏置，长度为 TDD-LTE系统四个子帧的持续时间；另外 Wimax无线帧下行子帧（下行时间段 )长度等于 TDD-LTE系统无线帧的下行时间段长度，并且使 Wimax无线帧下行到上行转换时间（TTG ) 等于 TDD-LTE保护时隙（ GP, 对于特殊子帧配置索引 0其时长为 714.07微秒）最后，使 Wimax无线帧上行子帧（上行时间段 )和上行到下行转换时间（RTG ) 长度之和等于 TDD-LTE 系统无线帧的上行时间段长度。这样就实现了 Wimax系统的无线帧结构和 TDD-LTE系统的无线帧结构的完全对齐，这两个系统在帧结构上就能完全兼容而不会产生千扰。实施例七获取到 TDD-LTE系统的帧结构配置索引为 5 , TDD-LTE系统的特殊子帧配置索引为 0, 这种情况下，两个半帧的结构不同，第一个半帧特殊子帧后面的一个子帧，即编号为 2的子帧被用于上行传输，第一个半帧最后两个个子帧，即编号为 3和 4的子帧被用于下行传输，而第二个半帧的所有子帧，即编号为 5、 6、 7、 8、 9的子帧全部被用于下行传输，每个无线帧的第一个子帧，加上后面的 DwPTS (对于特殊子帧配置索引 0,其时长为 214.58 ^啟秒），加上第一个半帧的最后两个子帧，再加上第二个半帧的所有子帧为该无线帧的下行时间段，每个无线帧的 UpPTS (对于特殊子帧配置索引 0, 其时长为 71.35 ^啟秒），再加上后面的一个子帧为该无线帧的上行时间段。在部署 Wimax 系统时，可以使 10ms 帧长的 Wimax 系统兼容上述 TDD-LTE系统，如图 10所示，将 Wimax无线帧下行子帧与 TDD-LTE无线帧第四个子帧（即编号为 3的下行子帧）对齐，即 Wimax无线帧与 TDD-LTE 无线帧的存在一个偏置，称为 Wimax无线帧的帧偏置，长度为 TDD-LTE系统三个子帧的持续时间；另外 Wimax无线帧下行子帧（下行时间段 )长度等于 TDD-LTE系统无线帧的下行时间段长度，并且使 Wimax无线帧下行到上行转换时间（TTG ) 等于 TDD-LTE保护时隙（ GP, 对于特殊子帧配置索引 0其时长为 714.07微秒）最后，使 Wimax无线帧上行子帧（上行时间段 )和上行到下行转换时间（RTG ) 长度之和等于 TDD-LTE 系统无线帧的上行时间段长度。这样就实现了 Wimax系统的无线帧结构和 TDD-LTE系统的无线帧结构的完全对齐，这两个系统在帧结构上就能完全兼容而不会产生千扰。需要注意的是，实施例一至实施例七中，首先， Wimax系统获取的特殊子帧的配置索引并不局限于索引 0, 该配置索引的取值范围为 0至 8, 分别对应于不同时长的 DwPTS , UpPTS以及 GP, 即，才艮据特殊子帧配置索引确定 TDD-LTE系统的 DwPTS , UpPTS以及 GP; 其次， Wimax系统通过获取 TDD-LTE系统的帧定时信息，即 TDD-LTE系统无线帧的起始发射时刻，再结合实施例中已经确定的帧偏置值，最终，能够确定 Wimax系统无线帧的发射时刻。图 12是根据本发明实施例的 Wimax系统的基站的示意图，包括：获取模块 10 , 用于获取 TDD-LTE系统的帧定时和帧结构信息；发射模块 20, 用于以与帧定时和帧结构信息所反映的上下行时间段对齐的方式发射无线帧中的下行子帧。其中， Wimax系统与 TDD-LTE系统的时钟保持同步，与 TDD-LTE系统的覆盖范围完全或部分重叠，并使用与 TDD-LTE 系统的射频频段相邻的射频频段。本实施例的基站可以执行上述实施例一至七中不同场景下的无线帧发射方法，这里不再赘述。从以上的描述中，可以看出，本发明的 Wimax系统与 TDD-LTE系统可以将无线帧上下行时间段对齐，从而避免了严重的上下行千扰，保证了系统的正常工作，允许 Wimax系统能够与具有不同无线帧结构的 TDD-LTE系统共存。显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的 ^"神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。 The TDD-LTE system, as shown in FIG. 5, aligns the Wimax radio frame downlink subframe with the last downlink subframe of a certain half of the TDD-LTE radio frame, that is, each half of the Wimax radio frame and the TDD-LTE radio frame. There is a bias in the frame, which is called the frame offset of the Wimax radio frame, and the length is the duration of one subframe of the TDD-LTE system. In addition, the length of the downlink subframe (downlink period) of the Wimax radio frame is equal to one of the TDD-LTE systems. The length of the downlink period of the half frame, and the Wimax radio frame is downlinked. The uplink conversion time (TTG) is equal to the TDD-LTE protection time slot (GP, for the special subframe configuration index 0, its duration is 714.07 microseconds;), and finally the Wimax radio frame uplink subframe (uplink time period) and uplink to downlink The sum of the conversion time (RTG) lengths is equal to the upstream period length of a certain half of the TDD-LTE system. In this way, the wireless frame structure of the Wimax system and the wireless frame structure of the TDD-LTE system are completely aligned, and the two systems are fully compatible in the frame structure without causing interference. In the third embodiment, the frame structure configuration index of the TDD-LTE system is 2, and the special subframe configuration index of the TDD-LTE system is 0. In this case, the structure of the two fields is the same, and each half frame special sub-frame One subframe after the frame, that is, subframes numbered 2 and 7 are used for uplink transmission, and the last two subframes of each field, that is, subframes numbered 3, 4, 8, and 9 are used for downlink transmission. , the first subframe of each field is added with the following DwPTS (index 0 for the special subframe, the duration is 214.58 ^ start seconds;), plus the last two subframes of the field are the half frame The downlink time period, the UpPTS of each field (the index 0 is configured for the special subframe, the duration is 71.35 ^ start seconds), and the next subframe is the uplink time period of the field. When the Wimax system is deployed, the Wimax system with a 5ms frame length can be made compatible with the above TDD-LTE system, as shown in FIG. 6, the Wimax radio frame downlink subframe and the fourth subframe of a certain half of the TDD-LTE radio frame ( That is, the downlink subframe numbered 3 or 8 is aligned, that is, there is an offset between each field of the Wimax radio frame and the TDD-LTE radio frame, which is called a frame offset of the Wimax radio frame, and the length is two for the TDD-LTE system. The duration of the subframes; in addition, the length of the downlink subframe of the Wimax radio frame (downlink period) is equal to the length of the downlink period of a certain half of the TDD-LTE system, and the downlink to uplink transition time (TTG) of the Wimax radio frame is equal to TDD. - LTE protection time slot (GP, for special subframe configuration index 0, its duration is 714.07 ^ start seconds), and finally make the sum of Wimax radio frame uplink subframe (uplink period) and uplink to downlink transition time (RTG) length It is equal to the uplink time length of a certain field of the TDD-LTE system. In this way, the wireless frame structure of the Wimax system and the wireless frame structure of the TDD-LTE system are completely aligned, and the two systems are fully compatible in the frame structure without causing interference. In the fourth embodiment, the frame structure configuration index of the TDD-LTE system is 6, and the special subframe configuration index of the TDD-LTE system is 0. In this case, the structure of the two fields is different, and the first half of the frame is special. The three subframes behind the frame, that is, the subframes numbered 2, 3, and 4 are all used for uplink transmission, and the second The half frame has only two subframes behind the special subframe, that is, the subframes numbered 7 and 8 are used for uplink transmission, and the last subframe of the second field, that is, the subframe numbered 9 is used for downlink transmission. , the first subframe of the first field of each radio frame, plus the following DwPTS (for a special subframe configuration index 0, the duration is 214.58 microseconds) is the downlink time period of the field, each UpPTS of the first half of the radio frame (for a special subframe configuration index 0, the duration is 71.35 ^ start seconds), plus the next three subframes are the uplink time period of the field, and each radio frame is second. The first subframe of the field is added to the following DwPTS (index 0 for special subframes, the duration is 214.58 microseconds), and the last subframe of the field is the downlink time of the field. , UpPTS of the second field of each radio frame (index 0 for special subframes, the duration is 71.35 ^ start seconds), plus the next two subframes are the uplink time period of the field. When the Wimax system is deployed, the Wimax system with a 5ms frame length can be compatible with the above TDD-LTE system. As shown in FIG. 7, the Wimax radio frame downlink subframe and the first subframe of a certain half of the TDD-LTE radio frame are used. (that is, the downlink subframe numbered 0 or 5 is downlink) aligned, and the length of the Wimax radio frame downlink subframe (downlink period) is equal to the downlink period length of the first half of the TDD-LTE system radio frame, and The Wimax radio frame downlink to uplink transition time (TTG) is equal to the TDD-LTE protection slot (GP, for the special subframe configuration index 0, its duration is 714.07 ^ start seconds), and finally the Wimax radio frame uplink subframe (upstream time) Segment) The length is equal to the length of the uplink period of the second half of the TDD-LTE system radio frame. Through the above method, the time period equal to the length of one subframe of the TDD-LTE system at the end of the wireless frame of the Wimax system is finally taken as the uplink to downlink conversion time, which is no longer used, and is equivalent to the uplink to downlink conversion time of the Wimax system. (RTG) is equal to one subframe length of the TDD-LTE system. In this way, the wireless frame structure of the Wimax system and the wireless frame structure of the TDD-LTE system are completely aligned, and the two systems are fully compatible in the frame structure without causing interference. In the fifth embodiment, the frame structure configuration index of the TDD-LTE system is 3, and the special subframe configuration index of the TDD-LTE system is 0. In this case, the structure of the two fields is different, and the first field is special. The three subframes behind the frame, that is, the subframes numbered 2, 3, and 4 are used for uplink transmission, and all the subframes of the second field, that is, subframes numbered 5, 6, 7, 8, and 9. All are used for downlink transmission, the first subframe of each radio frame, plus the following DwPTS (for a special subframe configuration index 0, its duration is 214.58 ^ start seconds), plus the second half of the frame All subframes are the downlink time period of the radio frame, and the UpPTS of each radio frame (the index 0 is configured for the special subframe, the duration is 71.35 ^ start seconds), and the subsequent three subframes are the uplink time of the radio frame. segment. When the Wimax system is deployed, the Wimax system with a 10 ms frame length can be compatible with the above TDD-LTE system. As shown in FIG. 8, the Wimax radio frame downlink subframe and the TDD-LTE radio frame sixth subframe (ie, number 5) The downlink subframe is aligned, that is, there is a bias between the Wimax radio frame and the TDD-LTE radio frame, which is called the frame offset of the Wimax radio frame, and the length is the duration of one half of the TDD-LTE system; and the Wimax radio frame is down. The length of the subframe (downlink period) is equal to the downlink period length of the TDD-LTE system radio frame, and the Wimax radio frame downlink to uplink transition time (TTG) is equal to the TDD-LTE guard slot (GP, for the special subframe configuration index). 0 has a duration of 714.07 microseconds. Finally, the sum of the Wimax radio frame uplink subframe (uplink period) and the uplink to downlink transition time (RTG) length is equal to the uplink period length of the TDD-LTE system radio frame. In this way, the wireless frame structure of the Wimax system and the wireless frame structure of the TDD-LTE system are completely aligned, and the two systems are fully compatible in the frame structure without causing interference. In the sixth embodiment, the frame structure configuration index of the TDD-LTE system is 4, and the special subframe configuration index of the TDD-LTE system is 0. In this case, the structure of the two fields is different, and the first half of the frame is special. The two subframes behind the frame, that is, the subframes numbered 2 and 3 are used for uplink transmission, the last subframe of the first field, that is, the subframe numbered 4 is used for downlink transmission, and the second half All subframes of the frame, that is, subframes numbered 5, 6, 7, 8, and 9 are all used for downlink transmission, and the first subframe of each radio frame is added with the following DwPTS (for special subframe configuration) Index 0, whose duration is 214.58 ^ start seconds, plus the last subframe of the first field, plus all subframes of the second field are the downlink time period of the radio frame, each radio frame UpPTS (index 0 for special subframes, which is 71.35 microseconds), plus the next two subframes are the uplink time period of the radio frame. When the Wimax system is deployed, the Wimax system with a 10 ms frame length can be made compatible with the above TDD-LTE system, as shown in FIG. 9, the Wimax radio frame downlink subframe and the TDD-LTE radio frame fifth subframe (ie, number 4) The downlink subframe is aligned, that is, there is a bias between the Wimax radio frame and the TDD-LTE radio frame, which is called the frame offset of the Wimax radio frame, and the length is the duration of four subframes of the TDD-LTE system; The length of the subframe (downlink period) is equal to the downlink period length of the TDD-LTE system radio frame, and the Wimax radio frame downlink to uplink transition time (TTG) is equal to the TDD-LTE guard slot (GP, for the special subframe configuration index). 0 has a duration of 714.07 microseconds. Finally, the sum of the Wimax radio frame uplink subframe (uplink period) and the uplink to downlink transition time (RTG) length is equal to the uplink period length of the TDD-LTE system radio frame. In this way, the wireless frame structure of the Wimax system and the wireless frame structure of the TDD-LTE system are completely aligned, and the two systems are fully compatible in the frame structure without causing interference. The frame structure configuration index of the TDD-LTE system is 5, and the special subframe configuration index of the TDD-LTE system is 0. In this case, the structure of the two fields is different, and the first field is special. One subframe after the frame, that is, the subframe numbered 2 is used for uplink transmission, and the last two subframes of the first subframe, that is, subframes numbered 3 and 4 are used for downlink transmission, and the second is used. All subframes of a field, ie, subframes numbered 5, 6, 7, 8, 9 are all used for downlink transmission, the first subframe of each radio frame, plus the following DwPTS (for special subframes) Configure index 0, the duration is 214.58 ^ start seconds, plus the last two subframes of the first field, plus all subframes of the second field are the downlink time period of the wireless frame, each wireless The UpPTS of the frame (for a special subframe configuration index 0, the duration is 71.35 ^ start seconds), plus the next subframe is the uplink time period of the radio frame. When the Wimax system is deployed, the Wimax system with a 10 ms frame length can be compatible with the above TDD-LTE system. As shown in FIG. 10, the Wimax radio frame downlink subframe and the TDD-LTE radio frame fourth subframe (ie, number 3) The downlink subframe is aligned, that is, there is a bias between the Wimax radio frame and the TDD-LTE radio frame, which is called the frame offset of the Wimax radio frame, and the length is the duration of three subframes of the TDD-LTE system; The length of the subframe (downlink period) is equal to the downlink period length of the TDD-LTE system radio frame, and the Wimax radio frame downlink to uplink transition time (TTG) is equal to the TDD-LTE guard slot (GP, for the special subframe configuration index). 0 has a duration of 714.07 microseconds. Finally, the sum of the Wimax radio frame uplink subframe (uplink period) and the uplink to downlink transition time (RTG) length is equal to the uplink period length of the TDD-LTE system radio frame. In this way, the wireless frame structure of the Wimax system and the wireless frame structure of the TDD-LTE system are completely aligned, and the two systems are fully compatible in the frame structure without causing interference. It should be noted that, in the first embodiment to the seventh embodiment, the configuration index of the special subframe obtained by the Wimax system is not limited to the index 0, and the configuration index ranges from 0 to 8, which respectively correspond to different durations. DwPTS, UpPTS, and GP, that is, the DwPTS, UpPTS, and GP of the TDD-LTE system are determined according to the special subframe configuration index. Second, the Wimax system obtains the frame timing information of the TDD-LTE system, that is, the TDD-LTE system radio frame. The initial transmission time, combined with the frame offset value already determined in the embodiment, finally determines the transmission timing of the Wimax system radio frame. FIG. 12 is a schematic diagram of a base station of a Wimax system according to an embodiment of the present invention, including: an obtaining module 10, configured to acquire frame timing and frame structure information of a TDD-LTE system; The transmitting module 20 is configured to transmit the downlink subframe in the radio frame in a manner aligned with the uplink and downlink time segments reflected by the frame timing and the frame structure information. The Wimax system is synchronized with the clock of the TDD-LTE system, completely or partially overlaps with the coverage of the TDD-LTE system, and uses a radio frequency band adjacent to the radio frequency band of the TDD-LTE system. The base station in this embodiment may perform the radio frame transmission method in different scenarios in the foregoing Embodiments 1 to 7, and details are not described herein again. From the above description, it can be seen that the Wimax system and the TDD-LTE system of the present invention can align the uplink and downlink time segments of the radio frame, thereby avoiding serious uplink and downlink interference, ensuring normal operation of the system, and allowing the Wimax system. Can coexist with TDD-LTE systems with different radio frame structures. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

A radio frame transmission method for a Wimax system, comprising the following steps: acquiring frame timing and frame structure information of a TDD-LTE system;

The Wimax system transmits a downlink subframe in the radio frame in a manner that is aligned with the uplink and downlink time segments reflected by the frame timing and the frame structure information;

The Wimax system is synchronized with the clock of the TDD-LTE system, completely or partially overlaps with the coverage of the TDD-LTE system, and uses a radio frequency band adjacent to the radio frequency band of the TDD-LTE system. .

The method according to claim 1, wherein the acquiring the frame timing of the TDD-LTE system comprises: acquiring a starting moment of the radio frame of the TDD-LTE system.

3. The method of claim 1, wherein the TDD-LTE system is obtained by an access network, a core network, or a background service of the Wimax system, or by artificial configuration of the Wimax system. Frame timing and the frame structure information.

4. The method according to claim 1, wherein acquiring frame timing and frame structure information of the TDD-LTE system comprises:

Receiving, by the Wimax system, the notification that the frame timing and/or the frame structure information of the TDD-LTE system changes;

The Wimax system reacquires the current frame timing and/or frame structure information of the TDD-LTE system according to the notification.

The method according to claim 1, wherein the aligning with the uplink timing period reflected by the frame timing and the frame structure information comprises: the downlink time period and/or the idle time period of the Wimax system are in the During the downlink time period of the TDD-LTE system, the uplink time period and/or the idle time period of the Wimax system are in the uplink time period of the TDD-LTE system.

The method according to claim 1, wherein the transmitting, by the Wimax system, the downlink subframes in a manner that is aligned with the uplink and downlink time segments reflected by the frame timing and the frame structure information includes: The Wimax system configures the radio frame and its transmission time in a manner aligned with the uplink and downlink time periods reflected by the frame timing and the frame structure information;

The Wimax system transmits the downlink subframe at the time of transmission.

The method of claim 6, wherein configuring the radio frame comprises: configuring a frame length of the radio frame, a length of the downlink subframe, an length of an uplink subframe of the radio frame, and The length of the idle period of the radio frame.

The method according to claim 7, wherein configuring the idle period length of the radio frame comprises: configuring a downlink to uplink transition time length of the radio frame, and uplink to downlink of the radio frame Conversion time length.

The method of claim 7, wherein the configuring the radio frame further comprises: configuring idle time period information of the radio frame and/or the radio frame in the control information of the downlink subframe Time-frequency resource information corresponding to the non-idle time period.

The method according to claim 6, wherein the acquiring the frame structure information of the TDD-LTE system comprises: acquiring a special subframe configuration index of the TDD-LTE system, and acquiring the TDD-LTE system The frame structure configuration index is 0, 1, or 2,

Configuring the radio frame and the time of transmitting the radio frame includes: configuring a frame length of the radio frame to be 5 milliseconds, a length of the downlink subframe being equal to a downlink time segment length of one field of the TDD-LTE system, and the uplink The sum of the length of the subframe and the length of the transition time of the uplink to the downlink is equal to the length of the uplink period of one field of the TDD-LTE system, and the length of the transition time from the downlink to the uplink is equal to that of the TDD-LTE system. Protecting the length of the time slot, the length of the offset of the transmission time of the radio frame relative to the transmission time of each field of the TDD-LTE system is the duration of N subframes of the TDD-LTE system, where N is equal to 0, 1 or 2; wherein, the downlink time period length, the uplink time period length, and the protection time slot length are determined according to the special subframe configuration index.

The method according to claim 6, wherein: acquiring frame structure information of the TDD-LTE system comprises: acquiring a special subframe configuration index of the TDD-LTE system, and acquiring the TDD-LTE system The frame structure configuration index is 6,

Configuring the radio frame and its transmission time includes: configuring a frame length of the radio frame to be 5 milliseconds, and a length of the downlink subframe is equal to a downlink time period of the first field of the radio frame of the TDD-LTE system Length, the length of the uplink subframe is equal to that of the TDD-LTE system The length of the uplink time period of the second field of the radio frame, the length of the downlink to uplink transition time is equal to the guard time slot length of the TDD-LTE system, and the uplink to downlink transition time length is equal to the TDD- The length of one subframe of the LTE system, the length of the transmission time of the radio frame relative to the transmission time of each field of the TDD-LTE system is 0; wherein, the index is determined according to the special subframe configuration index The downlink time period length, the uplink time period length, and the protection time slot length.

The method according to claim 6, wherein the acquiring the frame structure information of the TDD-LTE system comprises: acquiring a special subframe configuration index of the TDD-LTE system, and acquiring the TDD-LTE system The frame structure configuration index is 3, 4, or 5,

The configuration of the radio frame and the time of transmitting the radio frame includes: configuring a frame length of the radio frame to be 10 milliseconds, a length of the downlink subframe being equal to a length of a downlink period of the radio frame of the TDD-LTE system, and the uplink sub The length of the frame and the length of the uplink to downlink transition time are equal to the uplink time length of the radio frame of the TDD-LTE system, and the downlink to uplink transition time length is equal to the protection slot length of the TDD-LTE system. The length of the offset of the radio frame from the transmission time of the radio frame of the TDD-LTE system is the duration of the N subframes of the TDD-LTE system, where N is equal to 3, 4, or 5 And determining, according to the special subframe configuration index, the downlink time period length, the uplink time period length, and the protection time slot length.

13. A base station for a Wimax system, comprising:

An acquiring module, configured to acquire frame timing and frame structure information of the TDD-LTE system, and a transmitting module, configured to transmit a downlink sub-frame in the radio frame in a manner aligned with the uplink and downlink time segments reflected by the frame timing and the frame structure information frame;