WO2022062811A1 - 数据发送方法、无线接入点及计算机可读存储介质 - Google Patents

数据发送方法、无线接入点及计算机可读存储介质 Download PDF

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WO2022062811A1
WO2022062811A1 PCT/CN2021/114442 CN2021114442W WO2022062811A1 WO 2022062811 A1 WO2022062811 A1 WO 2022062811A1 CN 2021114442 W CN2021114442 W CN 2021114442W WO 2022062811 A1 WO2022062811 A1 WO 2022062811A1
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virtual carrier
current transmission
transmission channel
added
power
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PCT/CN2021/114442
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English (en)
French (fr)
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曹明伟
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展讯通信（上海）有限公司
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Publication of WO2022062811A1 publication Critical patent/WO2022062811A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0215—Traffic management, e.g. flow control or congestion control based on user or device properties, e.g. MTC-capable devices
    • H04W28/0221—Traffic management, e.g. flow control or congestion control based on user or device properties, e.g. MTC-capable devices power availability or consumption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0096—Indication of changes in allocation
    • H04L5/0098—Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands

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  • the present invention relates to the field of communication technologies, and in particular, to a data transmission method, a wireless access point and a computer-readable storage medium.
  • a wireless access point In a wifi system, a wireless access point (Access Point, AP) sends data to a user terminal (User Equipment, UE) and a station (Station). Since adjacent channels are in close proximity in a wifi system, adjacent channel interference is particularly serious.
  • virtual carriers are usually set at the left and right ends of the transmission channel, and no data is transmitted on the virtual carriers, thereby forming a guard interval.
  • analog filters and digital filters are usually used to suppress adjacent channel interference.
  • the problem to be solved by the present invention is to improve the spectral efficiency while better suppressing the adjacent channel interference.
  • an embodiment of the present invention provides a data sending method, the method includes:
  • a virtual carrier When a virtual carrier needs to be added on the current transmission channel, a virtual carrier is added on the current transmission channel, and the to-be-sent data frame is transmitted on the current transmission channel after the virtual carrier is added.
  • judging whether to add a virtual carrier on the current transmission channel based on the power of the current transmission channel and the power of an adjacent channel including:
  • the ratio of the power of the current transmission channel to the power of the adjacent channel is less than or equal to the preset ratio threshold, it is determined that the virtual carrier needs to be added, otherwise, the virtual carrier does not need to be added.
  • the virtual carrier when the virtual carrier needs to be added on the current transmission channel, the virtual carrier is added on the current transmission channel, including:
  • the virtual carrier adjustment instruction information is generated; the virtual carrier adjustment instruction information is used to indicate the number and position of the virtual carrier to be added;
  • a virtual carrier is added on the current transmission channel.
  • the number of virtual carriers to be added is related to the bandwidth and fading value of the transition band of the filter at the receiving end of the data frame to be sent.
  • the position of the virtual carrier to be added is located at the position of the carrier that will be interfered in the current transmission channel.
  • the frame header of the data frame to be sent includes the virtual carrier adjustment indication information.
  • the method further includes: when there is no need to add a virtual carrier on the current transmission channel, transmitting the to-be-sent data frame on the current transmission channel.
  • An embodiment of the present invention further provides a wireless access point, where the wireless access point includes:
  • a power detection unit adapted to detect the power of the current transmission channel and the power of the adjacent channel when there is a data frame to be sent;
  • a judgment unit adapted to judge whether a virtual carrier needs to be added on the current transmission channel based on the power of the current transmission channel and the power of an adjacent channel;
  • a virtual carrier mapping unit adapted to add a virtual carrier on the current transmission channel when a virtual carrier needs to be added on the current transmission channel
  • the data sending unit is adapted to transmit the to-be-sent data frame on the current transmission channel after the virtual carrier is added.
  • the judging unit includes:
  • a first calculation subunit adapted to calculate the ratio of the power of the current transmission channel to the power of an adjacent channel
  • the judging subunit is suitable for judging that the virtual carrier needs to be added when the ratio of the power of the current transmission channel to the power of the adjacent channel is less than or equal to the preset ratio threshold, otherwise, the virtual carrier does not need to be added.
  • the virtual carrier mapping unit is adapted to generate virtual carrier adjustment indication information when a virtual carrier needs to be added; the virtual carrier adjustment instruction information is used to indicate the number and position of the virtual carrier that needs to be added; The virtual carrier adjustment indication information is added, and a virtual carrier is added on the current transmission channel.
  • the number of virtual carriers to be added is related to the bandwidth and fading value of the transition band of the filter at the receiving end of the data frame to be sent.
  • the position of the virtual carrier to be added is located at the position of the carrier that will be interfered in the current transmission channel.
  • the wireless access point further includes: an indication information mapping unit, adapted to add the virtual carrier adjustment indication information in the frame header of the data frame to be sent.
  • an indication information mapping unit adapted to add the virtual carrier adjustment indication information in the frame header of the data frame to be sent.
  • the data sending unit is adapted to transmit the to-be-sent data frame on the current transmission channel when the virtual carrier does not need to be added on the current transmission channel.
  • An embodiment of the present invention further provides another wireless access point, including a memory and a processor, where the memory stores a computer program that can run on the processor, and the processor executes the computer program when the processor runs the computer program.
  • Embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, and the computer program is executed by a processor to implement the steps of any one of the above-mentioned methods.
  • the spectral efficiency can be effectively improved.
  • Fig. 1 is a schematic diagram of the location of a plurality of channels at a frequency of 5GHZ;
  • Fig. 2 is a kind of setting schematic diagram of virtual carrier
  • Fig. 3 is a kind of principle schematic diagram that still exists interference after setting virtual carrier
  • FIG. 5 is a schematic structural diagram of a wireless access point in an embodiment of the present invention.
  • adjacent channels are in close proximity, especially at the 5GHz frequency.
  • 8 5GHz channels are adjacent in order from low to high frequency.
  • Each channel bandwidth is 20MHz.
  • f 20_1 to f 20_8 are the center frequency points of the corresponding channels.
  • the channel whose center frequency is f 20_2 is adjacent to the channel whose center frequency is f 20_1
  • the channel whose center frequency is f 20_1 and the channel whose center frequency is f 20_3 are the center frequency points of the corresponding channels.
  • dummy carriers are usually set at both ends of the channel, and no energy is sent on the dummy carriers, thereby forming a guard interval.
  • the low frequency part on the left side and the high frequency part on the right side of the channel each have a virtual carrier of about 400KHz.
  • the channel whose center frequency point is f 20_2 and the channel whose center frequency point is f 20_1 in Fig. 1 as an example, there is a 400KHz virtual carrier on the left side of the center frequency point f 20_1 channel, and the right side of the center frequency point is f 20_2 channel .
  • 400KHz virtual carrier is the virtual carrier on the right side of the f 20_1 channel and the center frequency point is the virtual carrier on the left side of the f 20_2 channel, forming a guard interval of about 800KHz.
  • an analog filter and a digital filter are usually used to suppress the interference of adjacent channels.
  • the inventor's research found that after the center frequency of the received signal is moved to 0HZ, when the filter and the digital filter filter filter the received signal, because there is a transition band of a certain frequency range between the passband and stopband of the filter, the transition band The bandwidth of the filter usually exceeds the guard interval between adjacent channels. Therefore, the transition band of the filter will introduce large interference, as shown in the triangular part of (a) in Figure 3, and the interference introduced by the transition band is adjacent to the of the current transmit channel.
  • the existing scheme uses virtual carriers to reduce interference, but the number and location of virtual carriers in the protocol are fixed, but when there is interference from larger adjacent channels, there are still information carriers that are interfered.
  • an embodiment of the present invention provides a data transmission method, based on the power of the current transmission channel and the power of the adjacent channel, to determine whether to add a dummy carrier on the current transmission channel, and when it is necessary to add a dummy carrier to the current transmission channel.
  • the virtual carrier is added only when the carrier is used. By adding dummy carriers, the interference of adjacent channels can be better suppressed.
  • the power of the current transmission channel and the power of the adjacent channel are used to determine whether to add a virtual carrier. Compared with the direct addition of a virtual carrier, the spectral efficiency can be effectively improved.
  • an embodiment of the present invention provides a data sending method, which is applicable to an AP.
  • the AP as a bridge between the wireless network and the wired network, can send data to the UE, and can also send data to the site, but regardless of the receiving end, the data sending method in the embodiment of the present invention can be used for data sending.
  • the method includes the following steps:
  • Step 41 when there is a data frame to be sent, detect the power of the current transmission channel and the power of the adjacent channel.
  • the power Ps of the current transmission channel and the power Pi of the adjacent channel may be detected.
  • the number of adjacent channels is only one.
  • the current transmit channel is an intermediate channel (ie, not the first or last transmit channel) at the current frequency, the number of adjacent channels is two.
  • Whether a virtual carrier is added between the current transmission channel and each adjacent channel and how to add a virtual carrier can be implemented by using the solution of the present invention.
  • various methods may be used to detect the power Ps of the current transmission channel and the power Pi of the adjacent channels, which are not limited here.
  • Step 42 based on the power of the current transmission channel and the power of the adjacent channel, determine whether a virtual carrier needs to be added to the current transmission channel.
  • various methods can be used to determine whether a virtual carrier needs to be added to the current transmission channel, which is not limited here.
  • the ratio of the power Ps of the current transmission channel and the power Pi of the adjacent channel may be calculated first, and then the ratio is compared with a preset ratio threshold Tr.
  • the preset ratio threshold Tr can be obtained through a limited number of experiments.
  • step 43 is performed; otherwise, step 44 is performed.
  • Step 43 adding a virtual carrier to the current transmission channel, and transmitting the data frame to be sent on the current transmission channel after the virtual carrier is added.
  • various methods may be adopted to add a virtual carrier on the current transmission channel, which is not specifically limited.
  • virtual carrier adjustment indication information can be generated first, and then a virtual carrier is added on the current transmission channel based on the virtual carrier adjustment indication information.
  • the virtual carrier adjustment indication information is used to indicate the number and position of virtual carriers to be added.
  • the number of virtual carriers to be added is related to the bandwidth and fading value of the filter transition band at the receiving end of the data frame to be sent.
  • the transition band of the filter can be determined.
  • the number of virtual carriers to be added can be determined, so that the guard interval between adjacent channels is close to the bandwidth of the receiver filter transition band, or even larger than the receiver filter transition band. bandwidth.
  • the bandwidth of the virtual carrier will be different in different transmission modes of the AP. Based on the bandwidth of the filter at the receiving end, one virtual carrier can be added, or two or more virtual carriers can be added.
  • the position of the virtual carrier to be added is located at the position of the carrier whose current transmission channel will be interfered. For example, in FIG. 3 , if a carrier with a width of ⁇ f will be interfered, when a dummy carrier is added at this time, a dummy carrier can be added at the position where the interfered carrier is located.
  • the virtual carrier adjustment indication information may only indicate the number of virtual carriers that need to be added, or only indicate the positions of virtual carriers that need to be added, and for the information that is not indicated, the default or protocol is also used. Pre-agreed way to save transmission resources.
  • the AP may send the virtual carrier adjustment indication information to the receiving end, so that the receiving end can learn the characteristics of the data frame to be sent. Specifically, the bits reserved in the frame header of the data frame to be sent may be used to send the virtual carrier adjustment indication information to inform the receiving end whether to add a virtual carrier and the identifier of the added virtual carrier.
  • Step 44 Transmit the to-be-sent data frame on the current transmission channel.
  • the data frame to be sent can be directly transmitted on the current transmission channel without adding a virtual carrier, which can effectively improve spectrum utilization effectiveness.
  • the current transmission channel is an intermediate channel
  • the number of adjacent channels is 2 at this time, and for any adjacent channel, the data transmission method described in the above embodiment can be used to determine the current transmission channel.
  • virtual carrier needs to be added. At this time, there may be the following situations: the first, the two adjacent channels do not need to add dummy carriers; the second, one of the adjacent channels needs to add dummy carriers, and the other adjacent channel does not need to add dummy carriers; In the third type, dummy carriers need to be added to both adjacent channels.
  • the AP before transmitting the data frame to be sent, the AP needs to determine whether the virtual carrier needs to be added for the two adjacent channels respectively, and only sends the virtual carrier after the addition of the virtual carrier for the two adjacent channels is completed. the data frame to be sent.
  • the adjacent channel can not only be adjacent to the current transmission channel, but also have a certain interval, and the data transmission method can suppress the interference of the adjacent channel to the current transmission channel.
  • the interference of adjacent channels can be further suppressed.
  • the power of the current transmission channel and the power of the adjacent channel are used to determine whether to add a virtual carrier instead of directly adding a virtual carrier, so the spectrum efficiency can be effectively improved.
  • an embodiment of the present invention provides a wireless access point 50 .
  • the wireless access point 50 may include: a power detection unit 51 , a judgment unit 52 , a virtual carrier mapping unit 53 and a data transmission unit 54 . in:
  • the power detection unit 51 is adapted to detect the power of the current transmission channel and the power of the adjacent channel when there is a data frame to be sent;
  • the judging unit 52 is adapted to judge whether a virtual carrier needs to be added on the current transmission channel based on the power of the current transmission channel and the power of the adjacent channel;
  • the virtual carrier mapping unit 53 is adapted to add a virtual carrier on the current transmission channel when a virtual carrier needs to be added on the current transmission channel;
  • the data sending unit 54 is adapted to transmit the to-be-sent data frame on the current transmission channel after the virtual carrier is added.
  • the judging unit 52 may include: a first calculating sub-unit 521 and a judging sub-unit 522 . in:
  • the first calculation subunit 521 is adapted to calculate the ratio of the power of the current transmission channel to the power of the adjacent channel;
  • the judging subunit 522 is adapted to determine that a dummy carrier needs to be added when the ratio of the power of the current transmission channel to the power of an adjacent channel is less than or equal to a preset ratio threshold, otherwise, no dummy carrier needs to be added.
  • the virtual carrier mapping unit 53 is adapted to generate virtual carrier adjustment indication information when a virtual carrier needs to be added; the virtual carrier adjustment instruction information is used to indicate the virtual carrier to be added. The number and location; based on the virtual carrier adjustment indication information, add a virtual carrier on the current transmission channel.
  • the number of virtual carriers to be added is related to the bandwidth and fading value of the transition band of the filter at the receiving end of the data frame to be sent.
  • the position of the virtual carrier to be added is located at the position of the carrier that will be interfered in the current transmission channel.
  • the wireless access point 50 may further include: an indication information mapping unit 55, adapted to add the virtual carrier adjustment indication information in the frame header of the data frame to be sent.
  • the data transmission unit is adapted to transmit the to-be-sent data frame on the current transmission channel when there is no need to add a virtual carrier to the current transmission channel.
  • An embodiment of the present invention also provides another wireless access point, the wireless access point includes a memory and a processor, the memory stores a computer program that can run on the processor, and the processing When the computer runs the computer program, the steps of the method in any one of the above embodiments are executed.
  • An embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored, and the computer program is executed by a processor to implement the steps of any of the methods in the foregoing embodiments.
  • the computer-readable storage medium may include: ROM, RAM, magnetic disk or optical disk, and the like.
  • the computer-readable storage medium may include: ROM, RAM, magnetic disk or optical disk, and the like.
  • each module/unit included in each device and product described in the above-mentioned embodiments it may be a software module/unit, a hardware module/unit, or a part of a software module/unit and a part of a hardware module/unit .
  • each module/unit included therein may be implemented by hardware such as circuits, or at least some modules/units may be implemented by a software program.
  • the remaining (if any) part of the modules/units can be implemented by hardware such as circuits; for each device and product applied to or integrated in the chip module, the modules/units contained therein can be They are all implemented by hardware such as circuits, and different modules/units can be located in the same component (such as a chip, circuit module, etc.) or in different components of the chip module, or at least some modules/units can be implemented by software programs.
  • the software program runs on the processor integrated inside the chip module, and the remaining (if any) part of the modules/units can be implemented by hardware such as circuits; for each device and product applied to or integrated in the terminal, each module contained in it
  • the units/units may all be implemented in hardware such as circuits, and different modules/units may be located in the same component (eg, chip, circuit module, etc.) or in different components in the terminal, or at least some of the modules/units may be implemented in the form of software programs Realization, the software program runs on the processor integrated inside the terminal, and the remaining (if any) part of the modules/units can be implemented in hardware such as circuits.

Abstract

一种数据发送方法、无线接入点及计算机可读存储介质。所述方法包括：当存在待发送数据帧时，检测当前发射信道的功率及邻信道的功率；基于所述当前发射信道的功率及邻信道的功率，判断是否需要在所述当前发射信道上增设虚载波；当需要在所述当前发射信道上增设虚载波时，在所述当前发射信道上增设虚载波，并在增设虚载波后的当前发射信道上，传输所述待发送数据帧。应用上述方案，可以在更好地抑制邻道干扰的同时，提高频谱效率。

Description

数据发送方法、无线接入点及计算机可读存储介质
本申请要求于2020年9月28日提交中国专利局、申请号为202011043290.X、发明名称为“数据发送方法、无线接入点及计算机可读存储介质”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，具体涉及一种数据发送方法、无线接入点及计算机可读存储介质。
背景技术
在wifi系统中，无线接入点(Access Point，AP)会向用户终端(User Equipment，UE)和站点(Station)发送数据。由于wifi系统中，相邻信道之间紧邻，因此，邻信道干扰特别严重。
为对抗邻道干扰，通常会在发射信道的左右两端设置虚载波，在虚载波上不传输数据，从而形成保护间隔。在接收端，通常采用模拟滤波器以及数字滤波器来抑制邻道干扰。
然而，采用上述方案，在邻信道的干扰较大时，仍会有信息载波被干扰。
发明内容
本发明要解决的问题是：在更好地抑制邻道干扰的同时，提高频谱效率。
为解决上述问题，本发明实施例提供了一种数据发送方法，所述方法包括：
当存在待发送数据帧时，检测当前发射信道的功率及邻信道的功率；
基于所述当前发射信道的功率及邻信道的功率，判断是否需要在所述当前发射信道上增设虚载波；
当需要在所述当前发射信道上增设虚载波时，在所述当前发射信道上增设虚载波，并在增设虚载波后的当前发射信道上，传输所述待发送数据帧。
可选地，所述基于所述当前发射信道的功率及邻信道的功率，判断是否在所述当前发射信道上增设虚载波，包括：
计算所述当前发射信道的功率与邻信道的功率的比值；
当所述当前发射信道的功率与邻信道的功率的比值小于或等于预设比值阈值时，判定需要增设虚载波，否则不需要增设虚载波。
可选地，所述当需要在所述当前发射信道上增设虚载波时，在所述当前发射信道上增设虚载波，包括：
当需要增设虚载波时，产生虚载波调整指示信息；所述虚载波调整指示信息，用于指示需要增设的虚载波的数量及位置；
基于所述虚载波调整指示信息，在所述当前发射信道上增设虚载波。
可选地，所述需要增设的虚载波的数量，与所述待发送数据帧接收端滤波器的过渡带的带宽和衰落值相关。
可选地，所述需要增设的虚载波的位置，位于所述当前发射信道内会被干扰的载波位置处。
可选地，所述待发送数据帧的帧头中包括所述虚载波调整指示信息。
可选地，所述方法还包括：当不需要在所述当前发射信道上增设 虚载波时，在所述当前发射信道上传输所述待发送数据帧。
本发明实施例还提供了一种无线接入点，所述无线接入点包括：
功率检测单元，适于当存在待发送数据帧时，检测当前发射信道的功率及邻信道的功率；
判断单元，适于基于所述当前发射信道的功率及邻信道的功率，判断是否需要在所述当前发射信道上增设虚载波；
虚载波映射单元，适于当需要在所述当前发射信道上增设虚载波时，在所述当前发射信道上增设虚载波；
数据发送单元，适于在增设虚载波后的当前发射信道上，传输所述待发送数据帧。
可选地，所述判断单元，包括：
第一计算子单元，适于计算所述当前发射信道的功率与邻信道的功率的比值；
判断子单元，适于当所述当前发射信道的功率与邻信道的功率的比值小于或等于预设比值阈值时，在判定需要增设虚载波，否则不需要增设虚载波。
可选地，所述虚载波映射单元，适于当需要增设虚载波时，产生虚载波调整指示信息；所述虚载波调整指示信息，用于指示需要增设的虚载波的数量及位置；基于所述虚载波调整指示信息，在所述当前发射信道上增设虚载波。
可选地，所述需要增设的虚载波的数量，与所述待发送数据帧接收端滤波器的过渡带的带宽和衰落值相关。
可选地，所述需要增设的虚载波的位置，位于所述当前发射信道内会被干扰的载波位置处。
可选地，所述无线接入点还包括：指示信息映射单元，适于在所 述待发送数据帧的帧头中增加所述虚载波调整指示信息。
可选地，所述数据发送单元，适于当不需要在所述当前发射信道上增设虚载波时，在所述当前发射信道上传输所述待发送数据帧。
本发明实施例还提供了另一种无线接入点，包括存储器和处理器，所述存储器上存储有能够在所述处理器上运行的计算机程序，所述处理器运行所述计算机程序时执行上述任一种所述方法的步骤。
本发明实施例还提供了一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行，以实现上述任一种所述方法的步骤。
与现有技术相比，本发明实施例的技术方案具有以下优点：
采用上述方案，基于当前发射信道的功率及邻信道的功率，来判断是否需要在当前发射信道上增设虚载波，当需要在当前发射信道上增设虚载波时，才增设虚载波。通过增设虚载波，可以抑制邻信道的干扰。而通过当前发射信道的功率及邻信道的功率，来判断是否增设虚载波，相对于直接增设虚载波，可以有效提高频谱效率。
附图说明
图1是5GHZ频率下一种多个信道的位置示意图；
图2是一种虚载波的设置示意图；
图3是一种设置虚载波后仍存在干扰的原理示意图；
图4是本发明实施例中一种数据发送方法的流程图；
图5是本发明实施例中一种无线接入点的结构示意图。
具体实施方式
在wifi系统中，相邻信道是紧邻的，特别是5GHz频率下。如图1所示，8个5GHz信道按照频率从低到高依次相邻。每个信道带宽为 20MHz。f 20_1至f 20_8为对应信道的中心频点。其中，中心频点为f 20_2的信道，与中心频点为f 20_1的信道紧邻，中心频点为f 20_1的信道与中心频点为f 20_3的信道。
由于相邻信道之间没有频率间隔或者间隔很小，故邻信道干扰会很严重，从而影响通信性能。
为了对抗邻道干扰，通常会在信道两端设置虚载波，在虚载波上不发能量，从而形成保护间隔。
在wifi 802.11ax协议中，信道左边低频部分和右边高频部分，各有约400KHz的虚载波。以图1中的中心频点为f 20_2的信道及中心频点为f 20_1的信道为例，中心频点为f 20_1信道的左边有400KHz的虚载波，中心频点为f 20_2信道的右边有400KHz的虚载波。中心频点为f 20_1信道右边的虚载波和中心频点为f 20_2信道左边的虚载波，共形成约800KHz的保护间隔。
当中心频点为f 20_2的信道及中心频点为f 20_1的信道同时通信时，在接收端，通常采用模拟滤波器以及数字滤波器来抑制邻信道的干扰。
经发明人研究发现，接收信号在中心频率搬移到0HZ后，滤波器以及数字滤波器对接收信号进行滤波时，由于滤波器的通带和阻带之间存在一定频率范围的过渡带，过渡带的带宽通常会超过相邻信道之间保护间隔，因此，滤波器的过渡带会引入较大干扰，如图3中(a)图的三角形部分，并且，因过渡带而引入的干扰，是紧邻当前发射信道的。
在解调时，通常是一倍采样。根据采样定理，降采样后，带外的干扰会叠加在左侧信号上，如图3中(b)图的三角形部分，共有Δf宽的载波被干扰。这种叠加干扰是无法消除的，严重会影响该处调制信息的解调，特别是高码率时，若没有足够的冗余来纠错，将会导致整帧的丢失。或者，若没有相应于该帧所使用的调制与编码策略 (Modulation and Coding Scheme，MCS)所足够的信噪比(Signal Noise Ratio，SNR)时，也会引起整帧的丢失。
也就是说，现有方案采用虚载波来减少干扰，但协议中虚载波的数量及位置是固定的，但当有较大邻信道的干扰时，仍有信息载波被干扰。
针对上述问题，本发明实施例提供了一种数据发送方法，基于当前发射信道的功率及邻信道的功率，来判断是否需要在当前发射信道上增设虚载波，当需要在当前发射信道上增设虚载波时，才增设虚载波。通过增设虚载波，可以更好地抑制邻信道的干扰。而通过当前发射信道的功率及邻信道的功率，来判断是否增设虚载波，相对于直接增设虚载波，可以有效提高频谱效率。
为使本发明的上述目的、特征和优点能够更为明显易懂，下面结合附图对本发明的具体实施例作详细地说明。
参照图4，本发明实施例提供了一种数据发送方法，适用于AP。其中，AP作为无线网和有线网之间的桥梁，可以向UE发送数据，也可以向站点发送数据，但无论接收端为何，均可以采用本发明实施例中的数据发送方法进行数据发送。
具体地，所述方法包括如下步骤：
步骤41，当存在待发送数据帧时，检测当前发射信道的功率及邻信道的功率。
在具体实施中，对于每一待发送数据帧，在发送之前，均可以先检测当前发射信道的功率Ps及邻信道的功率Pi。其中，在当前发射信道为当前频率下的首个或最后一个发射信道时，邻信道的数量仅一个。在当前发射信道为当前频率下的中间信道(即非首个或最后一个发射信道)时，邻信道的数量为两个。
当前发射信道与每个邻信道之间是否增设虚载波以及如何增设虚载波，均可以采用本发明的方案，进行实施。
在具体实施中，可以采用多种方法，检测当前发射信道的功率Ps及邻信道的功率Pi，此处不作限制。
步骤42，基于所述当前发射信道的功率及邻信道的功率，判断是否需要在所述当前发射信道上增设虚载波。
在具体实施中，基于当前发射信道的功率Ps及邻信道的功率Pi，可以采用多种方法，判断是否需要在所述当前发射信道上增设虚载波，此处不作限制。
在本发明的一实施例中，可以先计算当前发射信道的功率Ps及邻信道的功率Pi的比值，再将该比值与预设比值阈值Tr进行比较。其中，所述预设比值阈值Tr可以通过有限次实验获得。
当所述当前发射信道的功率Ps与邻信道的功率Pi的比值小于或等于预设比值阈值Tr时，即(Ps/Pi)≤Tr，表明邻信道的功率Pi较大，邻信道的干扰也会较大，此时，可以判定需要增设虚载波，来抑制邻信道的干扰。
当所述当前发射信道的功率Ps与邻信道的功率Pi的比值大于预设比值阈值Tr时，即(Ps/Pi)＞Tr，表明邻信道的功率Pi较小，邻信道的干扰也就较小，此时，无须增设虚载波。
当需要增设虚载波时，执行步骤43，否则执行步骤44。
步骤43，在所述当前发射信道上增设虚载波，并在增设虚载波后的当前发射信道上，传输所述待发送数据帧。
在具体实施中，可以采用多种方法，在所述当前发射信道上增设虚载波，具体不作限制。
在本发明的一实施例中，当需要增设虚载波时，可以先产生虚载波调整指示信息，再基于所述虚载波调整指示信息，在所述当前发射信道上增设虚载波。其中，所述虚载波调整指示信息，用于指示需要增设的虚载波的数量及位置。
在具体实施中，所述需要增设的虚载波的数量，与所述待发送数据帧接收端滤波器过渡带的带宽和衰落值相关。通过获取带宽和衰落值，可以确定滤波器的过渡带。基于接收端滤波器过渡带的特征，可以确定需要增设的虚载波的数量，使得相邻信道之间的保护间隔，与接收端滤波器过渡带的带宽接近，甚至大于接收端滤波器过渡带的带宽。
在具体实施中，AP在不同的发射模式下，虚载波的带宽会有所不同，基于接收端滤波器的带宽，可以增设一个虚载波，也可以增设两个或两个以上虚载波。
在具体实施中，所述需要增设的虚载波的位置，位于所述当前发射信道会被干扰的载波所在的位置处。比如，在图3中，若宽度为Δf的载波会被干扰，此时增设虚载波时，可以在被干扰的载波所在的位置，增设虚载波。
在其它实施例中，所述虚载波调整指示信息，也可以仅指示需要增设的虚载波的数量，或者仅指示需要增设的虚载波的位置，而对于未指示的信息，也采用默认或协议中预先约定的方式，以节约传输资源。
在本发明的一实施例中，AP在产生所述虚载波调整指示信息后，可以将所述虚载波调整指示信息发送至接收端，使得接收端能够获知所述待发送数据帧的特性。具体地，可以使用待发送数据帧帧头中预留的比特位，发送所述虚载波调整指示信息，以告知接收端是否增加虚载波，以及增加的虚载波的标识。
步骤44，在所述当前发射信道上传输所述待发送数据帧。
在具体实施中，当不需要在所述当前发射信道上增设虚载波时，在所述当前发射信道上直接传输所述待发送数据帧即可，无需增设虚载波，由此可以有效提高频谱利用效率。
可以理解的是，在具体实施中，若当前发射信道为中间信道，此 时相邻信道数量为2个，对于任意邻信道，均可以采用上述实施例中描述的数据发送方法，确定当前发射信道是否需要增设虚载波。此时，可能存在以下几种情况：第一种，两个相邻信道均不需要增设虚载波；第二种，其中一个邻信道需要增设虚载波，而另一邻信道不需要增设虚载波；第三种，两个相邻信道均需要增设虚载波。
无论上述哪一种情况，AP在传输所述待发送数据帧前，需要分别针对两个邻信道，确定是否需要增设虚载波，并在针对两个邻信道的虚载波增设都完成后，才发送所述待发送数据帧。
另外，本发明实施例中的数据发送方法，所述邻信道不仅可以与当前发射信道紧邻，也可以存在一定间隔，通过所述数据发送方法，可以抑制邻信道对当前发射信道的干扰。
由上述内容可知，本发明实施例中的数据发送方法，通过增设虚载波，可以进一步抑制邻信道的干扰。而通过当前发射信道的功率及邻信道的功率，来判断是否增设虚载波，而非直接增设虚载波，因此可以有效提高频谱效率。
为了使本领域技术人员更好地理解和实现本发明，以下对上述方法对应的装置及计算机可读存储介质进行详细描述。
参照图5，本发明实施例提供了一种无线接入点50，所述无线接入点50可以包括：功率检测单元51、判断单元52、虚载波映射单元53及数据发送单元54。其中：
所述功率检测单元51，适于当存在待发送数据帧时，检测当前发射信道的功率及邻信道的功率；
所述判断单元52，适于基于所述当前发射信道的功率及邻信道的功率，判断是否需要在所述当前发射信道上增设虚载波；
所述虚载波映射单元53，适于当需要在所述当前发射信道上增设虚载波时，在所述当前发射信道上增设虚载波；
所述数据发送单元54，适于在增设虚载波后的当前发射信道上，传输所述待发送数据帧。
在本发明的一实施例中，所述判断单元52可以包括：第一计算子单元521及判断子单元522。其中：
所述第一计算子单元521，适于计算所述当前发射信道的功率与邻信道的功率的比值；
所述判断子单元522，适于当所述当前发射信道的功率与邻信道的功率的比值小于或等于预设比值阈值时，在判定需要增设虚载波，否则不需要增设虚载波。
在本发明的一实施例中，所述虚载波映射单元53，适于当需要增设虚载波时，产生虚载波调整指示信息；所述虚载波调整指示信息，用于指示需要增设的虚载波的数量及位置；基于所述虚载波调整指示信息，在所述当前发射信道上增设虚载波。
在本发明的一实施例中，所述需要增设的虚载波的数量，与所述待发送数据帧接收端滤波器的过渡带的带宽和衰落值相关。
在本发明的一实施例中，所述需要增设的虚载波的位置，位于所述当前发射信道内会被干扰的载波位置处。
在本发明的一实施例中，所述无线接入点50还可以包括：指示信息映射单元55，适于在所述待发送数据帧的帧头中增加所述虚载波调整指示信息。
在本发明的一实施例中，所述数据发送单元，适于当不需要在所述当前发射信道上增设虚载波时，在所述当前发射信道上传输所述待发送数据帧。
在本发明的实施例还提供了另一种无线接入点，所述无线接入点包括存储器和处理器，所述存储器上存储有能够在所述处理器上运行的计算机程序，所述处理器运行所述计算机程序时执行上述实施例中 任一种所述方法的步骤。
在本发明的实施例还提供了一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行，以实现上述实施例中任一种所述方法的步骤。
在具体实施中，所述计算机可读存储介质可以包括：ROM、RAM、磁盘或光盘等。
在具体实施中，所述计算机可读存储介质可以包括：ROM、RAM、磁盘或光盘等。
关于上述实施例中描述的各个装置、产品包含的各个模块/单元，其可以是软件模块/单元，也可以是硬件模块/单元，或者也可以部分是软件模块/单元，部分是硬件模块/单元。例如，对于应用于或集成于芯片的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于芯片内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现；对于应用于或集成于芯片模组的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，不同的模块/单元可以位于芯片模组的同一组件(例如芯片、电路模块等)或者不同组件中，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于芯片模组内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现；对于应用于或集成于终端的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，不同的模块/单元可以位于终端内同一组件(例如，芯片、电路模块等)或者不同组件中，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于终端内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现。
虽然本发明披露如上，但本发明并非限定于此。任何本领域技术人员，在不脱离本发明的精神和范围内，均可作各种更动与修改，因 此本发明的保护范围应当以权利要求所限定的范围为准。

Claims (16)

  1. 一种数据发送方法，其特征在于，包括：
    当存在待发送数据帧时，检测当前发射信道的功率及邻信道的功率；
    基于所述当前发射信道的功率及邻信道的功率，判断是否需要在所述当前发射信道上增设虚载波；
    当需要在所述当前发射信道上增设虚载波时，在所述当前发射信道上增设虚载波，并在增设虚载波后的当前发射信道上，传输所述待发送数据帧。
  2. 如权利要求1所述的数据发送方法，其特征在于，所述基于所述当前发射信道的功率及邻信道的功率，判断是否在所述当前发射信道上增设虚载波，包括：
    计算所述当前发射信道的功率与邻信道的功率的比值；
    当所述当前发射信道的功率与邻信道的功率的比值小于或等于预设比值阈值时，判定需要增设虚载波，否则不需要增设虚载波。
  3. 如权利要求2所述的数据发送方法，其特征在于，所述当需要在所述当前发射信道上增设虚载波时，在所述当前发射信道上增设虚载波，包括：
    当需要增设虚载波时，产生虚载波调整指示信息；所述虚载波调整指示信息，用于指示需要增设的虚载波的数量及位置；
    基于所述虚载波调整指示信息，在所述当前发射信道上增设虚载波。
  4. 如权利要求3所述的数据发送方法，其特征在于，所述需要增设的虚载波的数量，与所述待发送数据帧接收端滤波器的过渡带的带宽和衰落值相关。
  5. 如权利要求3所述的数据发送方法，其特征在于，所述需要增设的虚载波的位置，位于所述当前发射信道内会被干扰的载波位置处。
  6. 如权利要求3所述的数据发送方法，其特征在于，所述待发送数据帧的帧头中包括所述虚载波调整指示信息。
  7. 如权利要求1所述的数据发送方法，其特征在于，还包括：当不需要在所述当前发射信道上增设虚载波时，在所述当前发射信道上传输所述待发送数据帧。
  8. 一种无线接入点，其特征在于，包括：
    功率检测单元，适于当存在待发送数据帧时，检测当前发射信道的功率及邻信道的功率；
    判断单元，适于基于所述当前发射信道的功率及邻信道的功率，判断是否需要在所述当前发射信道上增设虚载波；
    虚载波映射单元，适于当需要在所述当前发射信道上增设虚载波时，在所述当前发射信道上增设虚载波；
    数据发送单元，适于在增设虚载波后的当前发射信道上，传输所述待发送数据帧。
  9. 如权利要求8所述的无线接入点，其特征在于，所述判断单元，包括：
    第一计算子单元，适于计算所述当前发射信道的功率与邻信道的功率的比值；
    判断子单元，适于当所述当前发射信道的功率与邻信道的功率的比值小于或等于预设比值阈值时，在判定需要增设虚载波，否则不需要增设虚载波。
  10. 如权利要求9所述的无线接入点，其特征在于，所述虚载波映射单元，适于当需要增设虚载波时，产生虚载波调整指示信息；所述虚载波调整指示信息，用于指示需要增设的虚载波的数量及位置；基于 所述虚载波调整指示信息，在所述当前发射信道上增设虚载波。
  11. 如权利要求10所述的无线接入点，其特征在于，所述需要增设的虚载波的数量，与所述待发送数据帧接收端滤波器的过渡带的带宽和衰落值相关。
  12. 如权利要求10所述的无线接入点，其特征在于，所述需要增设的虚载波的位置，位于所述当前发射信道内会被干扰的载波位置处。
  13. 如权利要求10所述的无线接入点，其特征在于，还包括：指示信息映射单元，适于在所述待发送数据帧的帧头中增加所述虚载波调整指示信息。
  14. 如权利要求8所述的无线接入点，其特征在于，所述数据发送单元，适于当不需要在所述当前发射信道上增设虚载波时，在所述当前发射信道上传输所述待发送数据帧。
  15. 一种无线接入点，其特征在于，包括存储器和处理器，所述存储器上存储有能够在所述处理器上运行的计算机程序，所述处理器运行所述计算机程序时执行权利要求1至7任一项所述方法的步骤。
  16. 一种计算机可读存储介质，其上存储有计算机程序，其特征在于，所述计算机程序被处理器执行，以实现权利要求1至7任一项所述方法的步骤。
PCT/CN2021/114442 2020-09-28 2021-08-25 数据发送方法、无线接入点及计算机可读存储介质 WO2022062811A1 (zh)

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Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
CN112188550B (zh) * 2020-09-28 2022-12-06 展讯通信（上海）有限公司 数据发送方法、无线接入点及计算机可读存储介质

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080070586A1 (en) * 2006-09-18 2008-03-20 Nokia Corporation Method and apparatus for adjusting guard band size between two carriers by quality of service data positioning in the spectrum band
CN101621366A (zh) * 2008-07-01 2010-01-06 富士通株式会社 无线通信系统的自适应传输方法和系统
CN102377495A (zh) * 2010-08-13 2012-03-14 中兴通讯股份有限公司 射频检测方法、装置及系统
CN102917448A (zh) * 2011-08-03 2013-02-06 中兴通讯股份有限公司 一种小区信息发送方法、装置及系统
CN103023850A (zh) * 2012-11-28 2013-04-03 北京工业大学 可变带宽的ofdm发射机和接收机
CN107277817A (zh) * 2016-04-08 2017-10-20 中兴通讯股份有限公司 一种保护频带使用方法及无线电装置
US20190174427A1 (en) * 2017-12-01 2019-06-06 At&T Intellectual Property I, L.P. Transmitting content using guard band frequencies at reduced power
CN111543096A (zh) * 2017-12-20 2020-08-14 高通股份有限公司 Nr-ss中的资源指派
CN112188550A (zh) * 2020-09-28 2021-01-05 展讯通信（上海）有限公司 数据发送方法、无线接入点及计算机可读存储介质

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5793627B2 (ja) * 2011-11-04 2015-10-14 インターデイジタル パテント ホールディングス インコーポレイテッド 複数のタイミングアドバンスに関連付けられた複数のコンポーネントキャリア上における無線伝送のための電力制御の方法および装置
CN104902554B (zh) * 2011-12-19 2018-05-29 华为技术有限公司 一种上行发射功率控制方法及用户设备
CN110996342B (zh) * 2019-12-16 2022-03-04 展讯通信（上海）有限公司 Stf发送、接收方法及装置、存储介质、终端

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080070586A1 (en) * 2006-09-18 2008-03-20 Nokia Corporation Method and apparatus for adjusting guard band size between two carriers by quality of service data positioning in the spectrum band
CN101621366A (zh) * 2008-07-01 2010-01-06 富士通株式会社 无线通信系统的自适应传输方法和系统
CN102377495A (zh) * 2010-08-13 2012-03-14 中兴通讯股份有限公司 射频检测方法、装置及系统
CN102917448A (zh) * 2011-08-03 2013-02-06 中兴通讯股份有限公司 一种小区信息发送方法、装置及系统
CN103023850A (zh) * 2012-11-28 2013-04-03 北京工业大学 可变带宽的ofdm发射机和接收机
CN107277817A (zh) * 2016-04-08 2017-10-20 中兴通讯股份有限公司 一种保护频带使用方法及无线电装置
US20190174427A1 (en) * 2017-12-01 2019-06-06 At&T Intellectual Property I, L.P. Transmitting content using guard band frequencies at reduced power
CN111543096A (zh) * 2017-12-20 2020-08-14 高通股份有限公司 Nr-ss中的资源指派
CN112188550A (zh) * 2020-09-28 2021-01-05 展讯通信（上海）有限公司 数据发送方法、无线接入点及计算机可读存储介质

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