CN103457898B - Setting method and setting device for wireless communication system - Google Patents

Abstract

The invention provides a setting method for determining a first number of extended high throughput long training fields included in a packet in a wireless communication system. The setting method comprises the following steps: determining a second number of spatial-time beams required for the wireless communication system to transmit the packet; and when the second number is greater than 4, setting the first number to be greater than or equal to 8. The invention also provides a setting device.

Description

Translated fromChinese

用于无线通信系统的设定方法及设定装置Setting method and setting device for wireless communication system

技术领域technical field

本发明涉及一种用于无线通信系统的设定方法及设定装置，尤其涉及一种可确保超高吞吐量的无线局域网通道估计运作的设定方法及设定装置。The present invention relates to a setting method and a setting device for a wireless communication system, in particular to a setting method and a setting device that can ensure ultra-high throughput wireless local area network channel estimation operation.

背景技术Background technique

无线局域网(Wireless Local Area Network，WLAN)技术是热门的无线通信技术之一，最早用于军事用途，近年来广泛应用于各种消费性电子产品，如桌上型计算机、笔记型计算机或个人数字助理，提供大众更便利及快速的互联网通信功能。无线局域网通信协议标准IEEE 802.11系列是由国际电机电子工程师学会(Institute of Electrical andElectronics Engineers，IEEE)所制定，由早期的IEEE 802.11a、IEEE 802.11b、IEEE802.11g等，演进至目前主流的IEEE 802.11n。IEEE 802.11a/g/n标准皆采用正交频分复用(Orthogonal Frequency-Division Multiplexing，OFDM)调制技术，与IEEE 802.11a/g标准不同的是，IEEE 802.11n标准使用多输入多输出(Multiple Input Multiple Output，MIMO)技术及其它新功能，大幅改善了数据速率及传输吞吐量(Throughput)，同时，通道频宽由20MHz增加为40MHz。Wireless local area network (Wireless Local Area Network, WLAN) technology is one of the popular wireless communication technologies. Assistant, providing the public with more convenient and fast Internet communication functions. The wireless LAN communication protocol standard IEEE 802.11 series is formulated by the Institute of Electrical and Electronics Engineers (IEEE), from the early IEEE 802.11a, IEEE 802.11b, IEEE802.11g, etc., to the current mainstream IEEE 802.11 n. The IEEE 802.11a/g/n standards all use Orthogonal Frequency-Division Multiplexing (OFDM) modulation technology. Unlike the IEEE 802.11a/g standard, the IEEE 802.11n standard uses Multiple Input Multiple Output, MIMO) technology and other new functions have greatly improved the data rate and transmission throughput (Throughput), and at the same time, the channel bandwidth has been increased from 20MHz to 40MHz.

请参考图1，图1为已知IEEE 802.11n标准的分组格式示意图。如图1所示，IEEE802.11n标准的分组由一前置数据(Preamble)与待传输的数据组合而成，前置数据位于每一分组的最前端，接续为待传输的数据。另外，前置数据为混合格式，可向下相容于IEEE802.11a/g标准的无线局域网装置，所包含的栏位依序为传统短训练栏位L-STF(LegacyShort Training Field)、传统长训练栏位L-LTF(Legacy Long Training Field)、传统信号栏位L-SIG(Legacy Signal Field)、高吞吐量信号栏位HT-SIG(High-ThroughputSignal Field)、高吞吐量短训练栏位HT-STF(High-Throughput Short Training Field)以及N个高吞吐量长训练栏位HT-LTF(High-Throughput Long Training Field)。传统短训练栏位L-STF用于分组起始检测(Start-of-packet Detection)、自动增益控制(AutomaticGain Control，AGC)、初始频率偏移估计(Frequency Offset Estimation)及初始时间同步(Time Synchronization)；传统长训练栏位L-LTF用于精密的频率偏移估计及时间同步；传统信号栏位L-SIG携带数据速率及分组长度的信息。高吞吐量信号栏位HT-SIG携带数据速率的信息，并且用于自动检测分组属于混合格式或传统格式；高吞吐量短训练栏位HT-STF用于自动增益控制；以及高吞吐量长训练栏位HT-LTF用于多输入多输出的通道估计，使接收端可据以判断通道状态。Please refer to FIG. 1 . FIG. 1 is a schematic diagram of a packet format of the known IEEE 802.11n standard. As shown in FIG. 1 , a packet of the IEEE802.11n standard is composed of a preamble and data to be transmitted. The preamble is located at the head of each packet, followed by the data to be transmitted. In addition, the pre-data is in a mixed format, which is backward compatible with IEEE802.11a/g standard wireless LAN devices, and the fields included are the traditional short training field L-STF (Legacy Short Training Field) Training field L-LTF (Legacy Long Training Field), traditional signal field L-SIG (Legacy Signal Field), high-throughput signal field HT-SIG (High-Throughput Signal Field), high-throughput short training field HT -STF (High-Throughput Short Training Field) and N high-throughput long training fields HT-LTF (High-Throughput Long Training Field). The traditional short training field L-STF is used for packet start detection (Start-of-packet Detection), automatic gain control (Automatic Gain Control, AGC), initial frequency offset estimation (Frequency Offset Estimation) and initial time synchronization (Time Synchronization) ); the traditional long training field L-LTF is used for precise frequency offset estimation and time synchronization; the traditional signal field L-SIG carries information of data rate and packet length. The high-throughput signal field HT-SIG carries information on the data rate and is used to automatically detect whether the packet is a hybrid or legacy format; the high-throughput short training field HT-STF is used for automatic gain control; and the high-throughput long training The field HT-LTF is used for MIMO channel estimation, so that the receiving end can judge the channel status accordingly.

高吞吐量长训练栏位HT-LTF的模式(Pattern)为业界所熟知，在此不赘述，而根据其功能，高吞吐量长训练栏位HT-LTF可进一步分为两类。第一类为数据高吞吐量长训练栏位，用来估计当前(数据)所使用的通道的状态，其数量N_DLTF由空间时间束(Space TimeStream)的数量N_STS所决定，如图2所示。第二类为延伸(Extension)高吞吐量长训练栏位，用来检测未使用的通道的额外空间维度(Spatial Dimension)，其数量N_ELTF由待检测的额外空间维度的数量N_ESS所决定，且两者关系相同于图2所示的数量N_DLTF与数量N_STS的关系。此外，由于IEEE 802.11n标准至多支持四个天线，因此，N_DLTF、N_ELTF皆小于等于4。The pattern (Pattern) of the high-throughput long training field HT-LTF is well known in the industry and will not be repeated here. According to its function, the high-throughput long training field HT-LTF can be further divided into two types. The first type is the data high throughput long training field, which is used to estimate the state of the channel currently used (data), and its number N_DLTF is determined by the number N_STS of the Space Time Stream (Space TimeStream), as shown in Figure 2 Show. The second type is the extension (Extension) high-throughput long training field, which is used to detect the extra spatial dimension (Spatial Dimension) of the unused channel. The number N_ELTF is determined by the number N_ESS of the extra spatial dimension to be detected. And the relationship between the two is the same as the relationship between the number N_DLTF and the number N_STS shown in FIG. 2 . In addition, since the IEEE 802.11n standard supports at most four antennas, N_DLTF and N_{ELTF are both} less than or equal to 4.

另一方面，为了降低通道估计的复杂度，已知技术是将高吞吐量长训练栏位HT-LTF设计为由单一符元(Symbol)赋予不同的权重与延迟而产生。因此，如图3所示，针对不同传输路径(TX1～TX4)，传输端会将高吞吐量长训练栏位HT-LTF先经过一延伸码(SpreadingCode)矩阵，决定通道估计时适当的权重；接着经过循环移位延迟(Cyclic Shift Delay，CSD)处理，加入循环前缀(Cyclic Prefix)，以抵抗多路径传输通道干扰；然后经过空间映射(Spatial Mapping)处理，如波束形成(Beamforming)，用以提升信噪比；最后，经过逆向离散傅利叶转换(Inverse Discrete Fourier Transform)，实现正交频分复用调制，将频域(Frequency Domain)输入序列转换为时域(Time Domain)正交频分复用调制符元(OFDMSymbol)序列。其中，延伸码矩阵为一4×4矩阵P_4×4，详细内容为：On the other hand, in order to reduce the complexity of channel estimation, the known technology is to design the high-throughput long training field HT-LTF to be generated by assigning different weights and delays to a single symbol (Symbol). Therefore, as shown in Figure 3, for different transmission paths (TX1-TX4), the transmission end will first pass the high-throughput long training field HT-LTF through a spreading code (SpreadingCode) matrix to determine the appropriate weight for channel estimation; Then after cyclic shift delay (Cyclic Shift Delay, CSD) processing, add cyclic prefix (Cyclic Prefix) to resist multi-path transmission channel interference; then through spatial mapping (Spatial Mapping) processing, such as beamforming (Beamforming), to Improve the signal-to-noise ratio; finally, through the inverse discrete Fourier transform (Inverse Discrete Fourier Transform), realize the OFDM modulation, and convert the frequency domain (Frequency Domain) input sequence into the time domain (Time Domain) OFDM Use modulation symbol (OFDMSymbol) sequence. Wherein, the extended code matrix is a 4×4 matrix P_4×4 , and the detailed content is:

为了实现更高品质的无线局域网传输，相关单位正在制定新一代的无线局域网标准，如IEEE 802.11ac，其具有超高吞吐量(Very High Throughput，VHT)，且通道频宽由40MHz提高至80MHz，可支持四支以上的天线。换句话说，空间时间束的数量N_STS(或待检测的额外空间维度的数量N_ESS)可能超过4，即超出了图2所定义的情形，而无法决定数据高吞吐量长训练栏位的数量N_DLTF(或延伸高吞吐量长训练栏位的数量N_ELTF)，同时也无法决定延伸码矩阵。In order to achieve higher-quality wireless LAN transmission, relevant organizations are developing a new generation of wireless LAN standards, such as IEEE 802.11ac, which has very high throughput (VHT), and the channel bandwidth is increased from 40MHz to 80MHz. Can support more than four antennas. In other words, the number N_STS of space-time bundles (or the number N_ESS of additional spatial dimensions to be detected) may exceed 4, that is, beyond the situation defined in Fig. The number N_DLTF (or the number N_ELTF of extended high-throughput long training fields), also cannot determine the extended code matrix.

有鉴于此，实有必要决定当空间时间束的数量N_STS(或待检测的额外空间维度的数量N_ESS)大于4时，数据高吞吐量长训练栏位的数量N_DLTF(或延伸高吞吐量长训练栏位的数量N_ELTF)，以利新一代的无线局域网标准的实现。In view of this, it is necessary to_{determine the number N DLTF(or} extended high-throughput high-throughput The number of long training fields N_ELTF ) is used to facilitate the realization of the new generation wireless local area network standard.

发明内容Contents of the invention

因此，本发明的主要目的即在于提供用于无线通信系统的设定方法及设定装置。Therefore, the main purpose of the present invention is to provide a setting method and a setting device for a wireless communication system.

本发明公开一种设定方法，用于一无线通信系统中决定一分组所包含的多个延伸高吞吐量长训练栏位的一第一数量。该设定方法包含有：判断该无线通信系统的待检测的额外空间维度的一第二数量；以及在该第二数量大于4时，将该第一数量设定为大于或等于8。The invention discloses a setting method, which is used in a wireless communication system to determine a first quantity of a plurality of extended high-throughput long training fields included in a packet. The setting method includes: determining a second number of additional spatial dimensions to be detected in the wireless communication system; and setting the first number to be greater than or equal to 8 when the second number is greater than 4.

本发明另公开一种设定装置，用于一无线通信系统中决定一分组所包含的多个延伸高吞吐量长训练栏位的一第一数量。该设定装置包含有：判断模块，用于判断该无线通信系统的待检测的额外空间维度的一第二数量；以及设定模块，用于在该第二数量大于4时，将该第一数量设定为大于或等于8。The present invention also discloses a setting device, which is used in a wireless communication system to determine a first quantity of a plurality of extended high-throughput long training fields included in a packet. The setting device includes: a judging module, used to judge a second number of additional spatial dimensions to be detected in the wireless communication system; and a setting module, used to set the first number when the second number is greater than 4 Quantity is set to be greater than or equal to 8.

本发明于待检测的额外空间维度的数量N_STS大于4时，将延伸高吞吐量长训练栏位的数量N_DLTF设定为8以上，或者更精确地，当待检测的额外空间维度的数量N_STS等于5、6、7、8时，将延伸高吞吐量长训练栏位的数量N_DLTF设定为8；如此一来，可进一步决定延伸码矩阵，从而确保超高吞吐量的无线局域网的通道估计运作。In the present invention, when the number N_STS of extra spatial dimensions to be detected is greater than 4, the number N_DLTF of extended high-throughput long training fields is set to be more than 8, or more precisely, when the number of extra spatial dimensions to be detected When N_STS is equal to 5, 6, 7, or 8, set the number N_DLTF of the extended high-throughput long training field to 8; in this way, the extended code matrix can be further determined to ensure an ultra-high-throughput wireless LAN The channel estimation works.

附图说明Description of drawings

图1为已知IEEE 802.11n标准的分组格式示意图。FIG. 1 is a schematic diagram of a packet format of the known IEEE 802.11n standard.

图2为已知IEEE 802.11n标准的高吞吐量长训练栏位的数量示意图。FIG. 2 is a schematic diagram of the number of high-throughput long training fields in the known IEEE 802.11n standard.

图3为已知IEEE 802.11n标准高吞吐量长训练栏位的处理流程示意图。FIG. 3 is a schematic diagram of the processing flow of the known IEEE 802.11n standard high throughput long training field.

图4为本发明实施例一设定流程的示意图。FIG. 4 is a schematic diagram of a setting process according to Embodiment 1 of the present invention.

图5为本发明实施例的高吞吐量长训练栏位的数量示意图。FIG. 5 is a schematic diagram of the number of high-throughput long training fields according to an embodiment of the present invention.

图6为本发明实施例的通道估计结果示意图。FIG. 6 is a schematic diagram of channel estimation results according to an embodiment of the present invention.

【主要元件符号说明】[Description of main component symbols]

L-STF 传统短训练栏位L-STF Traditional Short Training Field

L-LTF 传统长训练栏位L-LTF Traditional Long Training Field

L-SIG 传统信号栏位L-SIG legacy signal field

HT-SIG 高吞吐量的信号栏位HT-SIG High Throughput Signal Field

HT-STF 高吞吐量的短训练栏位HT-STF High Throughput Short Training Field

HT-LTF 高吞吐量的长训练栏位HT-LTF High Throughput Long Training Field

N_STS 空间时间束的数量Number of N_STS space-time bundles

N_DLTF 数据高吞吐量长训练栏位的数量Number of N_DLTF data high throughput long training fields

TX1～TX4 传输路径TX1～TX4 transmission path

40 设定流程40 Setup Flow

400、402、404、406 步骤400, 402, 404, 406 steps

MSE 均方误差MSE mean square error

SNR 信噪比SNR signal to noise ratio

具体实施方式detailed description

请参考图4，图4为本发明实施例一设定流程40的示意图。设定流程40用于一无线通信系统中决定一分组所包含的高吞吐量长训练栏位的数量，该无线通信系统较佳地符合无线局域网标准IEEE 802.11。设定流程40包含以下步骤：Please refer to FIG. 4 , which is a schematic diagram of a setting process 40 according to Embodiment 1 of the present invention. The configuration process 40 is used to determine the number of high-throughput long training fields included in a packet in a wireless communication system, and the wireless communication system preferably complies with the WLAN standard IEEE 802.11. The setting process 40 includes the following steps:

步骤400：开始。Step 400: start.

步骤402：判断无线通信系统传送一分组所需的空间时间束的数量N_STS。Step 402: Determine the number N_STS of space-time beams required by the wireless communication system to transmit a packet.

步骤404：于数量N_STS大于4时，将该分组所包含的高吞吐量长训练栏位的数量设定为大于或等于8。Step 404: When the number N_STS is greater than 4, set the number of high-throughput long training fields included in the packet to be greater than or equal to 8.

步骤406：结束。Step 406: end.

根据设定流程40，当空间时间束的数量N_STS大于4时，本发明是将高吞吐量长训练栏位的数量设定为8以上。更详细来说，此处所称的高吞吐量长训练栏位为数据高吞吐量长训练栏位，换句话说，前述关系可以下列式子表示：According to the setting process 40, when the number N_STS of space-time bundles is greater than 4, the present invention sets the number of high-throughput long training fields to be more than 8. In more detail, the high-throughput long training field referred to here is the data high-throughput long training field. In other words, the aforementioned relationship can be expressed by the following formula:

当数据高吞吐量长训练栏位的数量N_DLTF决定后，可进一步决定延伸码矩阵，以决定通道估计时适当的权重。需注意的是，延伸码矩阵用来转换高吞吐量长训练栏位，以设定通道估计时的权重，故其详细内容可能因系统需求而有所不同。一般而言，为减少运算复杂度，可较佳地将延伸码矩阵的各元素(element)设为1或-1，并将延伸码矩阵的转置矩阵设计为与反矩阵相等；如此一来，只要将延伸码矩阵的行列互换即可得其反矩阵，使整体运算复杂度得以降低。藉此，可通过计算机系统强大的运算能力，得出上列式子的结果。After the number N_DLTF of the high data throughput long training field is determined, the extended code matrix can be further determined to determine the appropriate weight for channel estimation. It should be noted that the extended code matrix is used to convert high-throughput long training fields to set the weights in channel estimation, so its details may vary according to system requirements. Generally speaking, in order to reduce the computational complexity, it is preferable to set each element (element) of the extended code matrix to 1 or -1, and the transpose matrix of the extended code matrix is designed to be equal to the inverse matrix; thus , as long as the rows and columns of the extended code matrix are exchanged, the inverse matrix can be obtained, which reduces the overall computational complexity. In this way, the result of the above formula can be obtained through the powerful computing capability of the computer system.

进一步地，图2中数量N_DLTF与数量N_STS的关系可扩充为图5的例子，亦即当空间时间束的数量N_STS为5、6、7、8时，数据高吞吐量长训练栏位的数量N_DLTF皆为8。除此之外，顾及技术延续性，在设计适用于N_DLTF≧8的延伸码矩阵时，可利用原本适用于N_DLTF＝4的延伸码矩阵P_4×4。例如：Furthermore, the relationship between the number N_DLTF and the number N_STS in Figure 2 can be extended to the example shown in Figure 5, that is, when the number N_STS of space-time bundles is 5, 6, 7, or 8, the high data throughput and long training column The number N_DLTF of bits is all 8. In addition, considering the technical continuity, when designing the extended code matrix applicable to N_DLTF ≧8, the extended code matrix P_4×4 originally applicable to N_DLTF =4 can be used. E.g:

如果将延伸码矩阵Pa_8×8分割为四个4×4矩阵，如可知其左上4×4矩阵(P11)、右上4×4矩阵(P12)皆为延伸码矩阵P_4×4。进一步地，可以列为单位，对矩阵左下4×4矩阵(P21)及右下4×4矩阵(P22)进行线性运算，可得：If the extended code matrix Pa_8×8 is divided into four 4×4 matrices, such as It can be seen that the upper left 4×4 matrix (P11) and the upper right 4×4 matrix (P12) are both extended code matrix P_4×4 . Further, it can be listed as a unit, and a linear operation is performed on the lower left 4×4 matrix (P21) and the lower right 4×4 matrix (P22) of the matrix, and it can be obtained:

其中，延伸码矩阵Pb_8×8的左上4×4矩阵、右上4×4矩阵及左下4×4矩阵皆为延伸码矩阵P_4×4。Wherein, the upper left 4×4 matrix, the upper right 4×4 matrix and the lower left 4×4 matrix of the extended code matrix Pb_8×8 are all the extended code matrix P_4×4 .

需注意的是，延伸码矩阵Pa_8×8、Pb_8×8系8×8延伸码矩阵的两种实施例，然不以此为限。同时，本发明的精神在于决定高吞吐量长训练栏位的数量。当高吞吐量长训练栏位的数量决定后，对应的延伸码矩阵的维度即可被决定，则本领域技术人员可进一步依不同需求，得出适当的延伸码矩阵。It should be noted that the extended code matrices Pa_8×8 and Pb_8×8 are two embodiments of the 8×8 extended code matrix, but not limited thereto. Meanwhile, the spirit of the present invention lies in determining the number of high-throughput long training fields. After the number of high-throughput long training fields is determined, the dimension of the corresponding extended code matrix can be determined, and those skilled in the art can further obtain an appropriate extended code matrix according to different requirements.

为了验证前述方法，可通过适当仿真方式，得出如图6所示的仿真结果，用以表示一6送2收系统的通道估计结果。其中，x轴表示信噪比(Signal to Noise Ratio)SNR，y轴表示均方误差MSE(Mean Square Error)。In order to verify the foregoing method, a simulation result as shown in FIG. 6 can be obtained through a suitable simulation method, which is used to represent the channel estimation result of a 6-send-2-receive system. Among them, the x-axis represents the Signal to Noise Ratio (Signal to Noise Ratio) SNR, and the y-axis represents the mean square error MSE (Mean Square Error).

本发明于空间时间束的数量N_STS大于4时，将数据高吞吐量长训练栏位的数量N_DLTF设定为8以上，其可衍生为「当待检测的额外空间维度的数量N_ESS大于4时，将延伸高吞吐量长训练栏位的数量N_ELTF设定为8以上」，此种衍生应为本领域技术人员可轻易完成。In the present invention, when the number N_STS of space-time bundles is greater than 4, the number N_DLTF of the data high-throughput long training field is set to be more than 8, which can be derived as "when the number N_ESS of extra space dimensions to be detected is greater than 4, the number N_ELTF of the extended high-throughput long training field is set to be more than 8", this kind of derivation should be easily accomplished by those skilled in the art.

另一方面，在硬件实现方面，可以软件、固件等方式，将设定流程40转换为一程序，并存储于无线通信装置的一存储器中，以指示微处理执行设定流程40的步骤。此等将设定流程40转换为适当程序以实现对应的设定装置，应为本领域技术人员所熟习的技术。On the other hand, in terms of hardware implementation, the setting process 40 can be converted into a program by means of software, firmware, etc., and stored in a memory of the wireless communication device to instruct the microprocessing to execute the steps of the setting process 40 . Such conversion of the setting process 40 into an appropriate program to realize the corresponding setting device should be a technique familiar to those skilled in the art.

如前所述，已知技术仅定义了空间时间束的数量N_STS(或待检测的额外空间维度的数量N_ESS)小于或等于4时数据高吞吐量长训练栏位的数量N_DLTF(或延伸高吞吐量长训练栏位的数量N_ELTF)。因此，当空间时间束的数量N_STS大于4时，已知技术即无法决定高吞吐量长训练栏位的数量，也无法延伸码矩阵。相较之下，本发明于空间时间束的数量N_STS大于4时，将数据高吞吐量长训练栏位的数量N_DLTF设定为8以上，或者更精确地，当空间时间束的数量N_STS等于5、6、7、8时，将数据高吞吐量长训练栏位的数量N_DLTF设定为8；如此一来，可进一步决定延伸码矩阵。As mentioned above, the known technology only defines the number N_DLTF of high throughput long training fields when the number N_STS of space-time bundles (or the number N_ESS of additional spatial dimensions to be detected) is less than or equal to 4 Extend the number of high-throughput long training fields N_ELTF ). Therefore, when the number N_STS of space-time bundles is greater than 4, the known technology cannot determine the number of high-throughput long training fields, nor can it extend the code matrix. In contrast, when the number N_STS of space-time bundles is greater than 4, the present invention sets the number N_DLTF of data high-throughput long training fields to be more than 8, or more precisely, when the number N STS of space-time bundles When the_STS is equal to 5, 6, 7, 8, the number N_DLTF of the data high throughput long training field is set to 8; in this way, the extended code matrix can be further determined.

综上所述，本发明于空间时间束的数量大于4时，将数据高吞吐量长训练栏位的数量设定为8以上，以确保超高吞吐量的无线局域网的通道估计运作。To sum up, when the number of space-time bundles is greater than 4, the present invention sets the number of high-throughput long training fields to be more than 8, so as to ensure the channel estimation operation of the ultra-high-throughput wireless local area network.

以上所述仅为本发明的优选实施例，凡依本发明权利要求书所做的均等变化与修饰，皆应属本发明的涵盖范围。The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.

Claims (8)

Translated fromChinese

1.一种设定方法，用于一无线通信系统中决定一分组所包含的多个延伸高吞吐量长训练栏位的一第一数量，该设定方法包含有：1. A setting method, which is used in a wireless communication system to determine a first quantity of a plurality of extended high-throughput long training fields included in a packet, the setting method comprising:判断该无线通信系统的待检测的额外空间维度的一第二数量；以及determining a second number of additional spatial dimensions to be detected for the wireless communication system; and在该第二数量大于4时，将该第一数量设定为大于或等于8。When the second number is greater than 4, the first number is set to be greater than or equal to 8.2.如权利要求1所述的设定方法，其特征在于，于该第二数量大于4时，将该第一数量设定为大于或等于8的步骤，包含有于该第二数量等于5、6、7、8中的至少任一整数时，将该第一数量设定为8。2. The setting method according to claim 1, characterized in that, when the second number is greater than 4, the step of setting the first number to be greater than or equal to 8 includes when the second number is equal to 5 , 6, 7, 8 at least any integer, the first number is set to 8.3.如权利要求2所述的设定方法，其还包含设定该无线通信系统用来转换该多个延伸高吞吐量长训练栏位之一延伸码矩阵P为：3. The setting method according to claim 2, further comprising setting the extended code matrix P used by the wireless communication system to convert the plurality of extended high-throughput long training fields as:$\mathrm{<span><span>P</span>P</span>}<span><span>=</span>=</span>\left[\begin{array}{cc}\mathrm{<span><span>P</span>P</span>}\mathrm{<span><span>11</span>11</span>}& \mathrm{<span><span>P</span>P</span>}\mathrm{<span><span>12</span>12</span>}\\ \mathrm{<span><span>P</span>P</span>}\mathrm{<span><span>21</span>twenty\; one</span>}& \mathrm{<span><span>P</span>P</span>}\mathrm{<span><span>22</span>twenty\; two</span>}\end{array}\right]<span><span>;</span>;</span>$其中，P11、P12、P21及P22分别为一4×4矩阵。Wherein, P11, P12, P21 and P22 are respectively a 4×4 matrix.4.如权利要求3所述的设定方法，其特征在于，P11为该第二数量小于或等于4时，该无线通信系统用来转换该多个延伸高吞吐量长训练栏位的一延伸码矩阵。4. The setting method according to claim 3, characterized in that, when P11 is the second number less than or equal to 4, the wireless communication system is used to convert an extension of the plurality of extended high-throughput long training fields code matrix.5.如权利要求4所述的设定方法，其特征在于，5. The setting method according to claim 4, wherein:$\mathrm{<span><span>P</span>P</span>}\mathrm{<span><span>11</span>11</span>}<span><span>=</span>=</span>\left[\begin{array}{cccc}\mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}\\ \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}\\ \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}\\ <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}\end{array}\right]<span><span>;</span>;</span>$$\mathrm{<span><span>P</span>P</span>}\mathrm{<span><span>12</span>12</span>}<span><span>=</span>=</span>\left[\begin{array}{cccc}\mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}\\ \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}\\ \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}\\ <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}\end{array}\right]<span><span>;</span>;</span>$以及 as well as$\mathrm{<span><span>P</span>P</span>}\mathrm{<span><span>22</span>twenty\; two</span>}<span><span>=</span>=</span>\left[\begin{array}{cccc}<span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}\\ <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}\\ <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}\\ <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}\end{array}\right]<span><span>.</span>.</span>$6.如权利要求4所述的设定方法，其特征在于，6. The setting method according to claim 4, wherein:$\mathrm{<span><span>P</span>P</span>}\mathrm{<span><span>11</span>11</span>}<span><span>=</span>=</span>\left[\begin{array}{cccc}\mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}\\ \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}\\ \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}\\ <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}\end{array}\right]<span><span>;</span>;</span>$$\mathrm{<span><span>P</span>P</span>}\mathrm{<span><span>12</span>12</span>}<span><span>=</span>=</span>\left[\begin{array}{cccc}\mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}\\ \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}\\ \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}\\ <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}\end{array}\right]<span><span>;</span>;</span>$以及 as well as$\mathrm{<span><span>P</span>P</span>}\mathrm{<span><span>22</span>twenty\; two</span>}<span><span>=</span>=</span>\left[\begin{array}{cccc}<span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}\\ <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}\\ <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& \mathrm{<span><span>1</span>1</span>}\\ \mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}& <span><span>-</span>-</span>\mathrm{<span><span>1</span>1</span>}\end{array}\right]<span><span>.</span>.</span>$7.如权利要求6所述的设定方法，其特征在于，P21及P22可同时以列为单位，进行线性运算。7. The setting method according to claim 6, wherein P21 and P22 can simultaneously perform linear operations in units of columns.8.一种设定装置，用于一无线通信系统中决定一分组所包含的多个延伸高吞吐量长训练栏位的一第一数量，该设定装置包含有：8. A setting device, used in a wireless communication system to determine a first quantity of a plurality of extended high-throughput long training fields included in a packet, the setting device comprising:判断模块，用于判断该无线通信系统的待检测的额外空间维度的一第二数量；以及A judging module, configured to judge a second number of additional spatial dimensions to be detected in the wireless communication system; and设定模块，用于在该第二数量大于4时，将该第一数量设定为大于或等于8。A setting module, configured to set the first number to be greater than or equal to 8 when the second number is greater than 4.