TWI730760B - Electronic device and transmission scheduling method the same - Google Patents
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本發明涉及一種電子裝置及其傳輸排程方法,且特別涉及一種為多個無線通訊模組(Wireless Communication Modules)共存的電子裝置及其傳輸排程方法。The present invention relates to an electronic device and a transmission scheduling method thereof, and more particularly to an electronic device coexisting with multiple wireless communication modules (Wireless Communication Modules) and a transmission scheduling method thereof.
隨著物聯網(Internet of Things,IoT)的興起,不同的無線通訊技術(例如,Wi-Fi、Bluetooth、ZigBee和ANT+等)已能夠集成在同一電子裝置中。然而,除了Wi-Fi和Bluetooth有解決頻道干擾的方案外,對於其它不同的無線通訊技術,其傳輸協定(Communications Protocols)卻沒有共存設計,以至於若其中一個無線通訊模組(例如,以下簡稱為TX)以高輸出功率進行發射時,會干擾同一電子裝置內的其它正進行接收的無線通訊模組(例如,以下簡稱為RX),且過大的功率長時間下來也可能損壞同一電子裝置內的其它無線通訊模組。With the rise of the Internet of Things (IoT), different wireless communication technologies (for example, Wi-Fi, Bluetooth, ZigBee, ANT+, etc.) can be integrated in the same electronic device. However, in addition to Wi-Fi and Bluetooth, which have solutions to channel interference, for other different wireless communication technologies, their communications protocols (Communications Protocols) do not have a coexistence design, so that if one of the wireless communication modules (for example, hereinafter referred to as For TX) when transmitting at high output power, it will interfere with other receiving wireless communication modules in the same electronic device (for example, RX for short), and excessive power may damage the same electronic device for a long time. Other wireless communication modules.
基於這種無線通訊模組共存的干擾問題,現有的傳輸排程方法則秉持「分時多工」的原則而讓TX等待直到RX完成接收後才進行發射。也就是說,當RX正進行接收時,依據現有的傳輸排程方法,TX會一直工作在最大輸出功率且效率不佳。然而,在某些情況下,TX是有機會可與RX同時進行傳輸,不需要避開正進行接收的RX。因此,如何設計出一種可使這種無線通訊模組共存更有效率的電子裝置及其傳輸排程方法則成為本領域的一項重要課題。Based on this interference problem caused by the coexistence of wireless communication modules, the existing transmission scheduling method adheres to the principle of "time division multiplexing" and makes the TX wait until the RX completes the reception before transmitting. That is to say, when the RX is receiving, according to the existing transmission scheduling method, the TX will always work at the maximum output power and the efficiency is not good. However, in some cases, TX has the opportunity to transmit at the same time as RX, and there is no need to avoid receiving RX. Therefore, how to design an electronic device and a transmission scheduling method that enables such wireless communication modules to coexist more efficiently has become an important issue in this field.
有鑑於此,本發明實施例提供一種傳輸排程方法,用於至少包括第一無線通訊模組、第二無線通訊模組和微控制器的電子裝置中。微控制器耦接第一無線通訊模組和第二無線通訊模組,且所述傳輸排程方法包括如下步驟。當有資料等待被第二無線通訊模組發送且第一無線通訊模組正進行接收件時,透過微控制器判斷電子裝置所供給第二無線通訊模組的電源電流是否大於預設值。若是,透過微控制器控制第二無線通訊模組不發送資料直到第一無線通訊模組結束接收。若不是,透過微控制器控制第二無線通訊模組在第一無線通訊模組正進行接收時同時發送資料。In view of this, an embodiment of the present invention provides a transmission scheduling method used in an electronic device including at least a first wireless communication module, a second wireless communication module, and a microcontroller. The microcontroller is coupled to the first wireless communication module and the second wireless communication module, and the transmission scheduling method includes the following steps. When there is data waiting to be sent by the second wireless communication module and the first wireless communication module is receiving the data, the microcontroller determines whether the power current supplied by the second wireless communication module by the electronic device is greater than the preset value. If yes, the second wireless communication module is controlled by the microcontroller not to send data until the first wireless communication module finishes receiving. If not, the second wireless communication module is controlled by the microcontroller to simultaneously send data while the first wireless communication module is receiving.
除此之外,本發明實施例另提供一種電子裝置,至少包括第一無線通訊模組、第二無線通訊模組和微控制器。微控制器耦接第一無線通訊模組和第二無線通訊模組。當有資料等待被第二無線通訊模組發送且第一無線通訊模組正進行接收時,微控制器判斷電子裝置所供給第二無線通訊模組的電源電流是否大於預設值。若是,微控制器控制第二無線通訊模組不發送資料直到第一無線通訊模組結束接收。若不是,微控制器控制第二無線通訊模組在第一無線通訊模組正進行接收時同時發送資料。In addition, an embodiment of the present invention further provides an electronic device, which includes at least a first wireless communication module, a second wireless communication module, and a microcontroller. The microcontroller is coupled to the first wireless communication module and the second wireless communication module. When there is data waiting to be sent by the second wireless communication module and the first wireless communication module is receiving, the microcontroller determines whether the power current supplied by the electronic device to the second wireless communication module is greater than a preset value. If yes, the microcontroller controls the second wireless communication module not to send data until the first wireless communication module finishes receiving. If not, the microcontroller controls the second wireless communication module to simultaneously send data while the first wireless communication module is receiving.
為使能更進一步瞭解本發明的特徵及技術內容,請參閱以下有關本發明的詳細說明與圖式,然而所提供的圖式僅用於提供參考與說明,並非用來對本發明加以限制。In order to further understand the features and technical content of the present invention, please refer to the following detailed description and drawings about the present invention. However, the provided drawings are only for reference and description, and are not used to limit the present invention.
首先,請同時參閱圖1和圖2,圖1是本發明實施例所提供的電子裝置的功能方塊圖,圖2是本發明實施例所提供的傳輸排程方法的步驟流程圖。需說明的是,圖2的傳輸排程方法可用於圖1的電子裝置1中,但本發明不限制圖1的電子裝置1只能夠執行圖2的傳輸排程方法。如圖1所示,電子裝置1至少包括第一無線通訊模組11、第二無線通訊模組12和微控制器13。在本實施例中,第一無線通訊模組11和第二無線通訊模組12將採用不同無線通訊技術進行傳輸。First, please refer to FIG. 1 and FIG. 2 at the same time. FIG. 1 is a functional block diagram of an electronic device provided by an embodiment of the present invention, and FIG. 2 is a step flow chart of a transmission scheduling method provided by an embodiment of the present invention. It should be noted that the transmission scheduling method of FIG. 2 can be used in the
例如,第一無線通訊模組11可為ZigBee無線通訊模組,且第二無線通訊模組12可為Wi-Fi無線通訊模組,但本發明不以此為限制。另外,微控制器13耦接第一無線通訊模組11和第二無線通訊模組12,並且是把中央處理器、記憶體和各種輸入輸出介面等都整合在積體電路上的微型電腦,但本發明不限制微控制器13的具體實現方式。為了是克服現有技術所提的上述缺陷,圖2的傳輸排程方法就必須限定在有資料等待被第二無線通訊模組12發送且第一無線通訊模組11正進行接收下開始執行,但本發明亦不限制有資料等待被第二無線通訊模組12發送的具體實現方式,以及第一無線通訊模組11正進行接收的具體實現方式。For example, the first
如圖2所示,當有資料等待被第二無線通訊模組12發送且第一無線通訊模組11正進行接收時,電子裝置1執行步驟S210,透過微控制器13判斷電子裝置1所供給第二無線通訊模組12的電源電流Is是否大於預設值。若是,電子裝置1執行步驟S220,透過微控制器13控制第二無線通訊模組12不發送資料直到第一無線通訊模組11結束接收;若不是,電子裝置1執行步驟S230,透過微控制器13控制第二無線通訊模組12在第一無線通訊模組11正進行接收時同時發送資料。至於微控制器13如何控制第二無線通訊模組12不發送資料直到第一無線通訊模組11結束接收將在下文中藉由其它段落說明,因此其細節就先不再多加贅述。As shown in FIG. 2, when there is data waiting to be sent by the second
另一方面,可請參閱圖3A和圖3B,圖3A和圖3B是圖1的電子裝置1所進行圖2的傳輸排程方法的時序示意圖。如圖3A和圖3B所示,當有資料等待被第二無線通訊模組12發送且第一無線通訊模組11正進行接收時,微控制器13判斷電子裝置1所供給第二無線通訊模組12的電源電流Is是否大於預設值,即步驟S210。然後,當判斷電源電流Is大於預設值時,微控制器13控制第二無線通訊模組12不發送資料直到第一無線通訊模組11結束接收,或者是說,如圖3A所示,微控制器13讓第二無線通訊模組12等待直到第一無線通訊模組11結束接收後才進行發射。實務上,微控制器13能夠藉由收到第一無線通訊模組11所傳的信號RX_END而知道第一無線通訊模組11結束接收,但本發明不以此為限制。On the other hand, please refer to FIGS. 3A and 3B. FIGS. 3A and 3B are timing diagrams of the transmission scheduling method of FIG. 2 performed by the
相對地,如圖3B所示,當判斷電源電流Is不大於預設值時,微控制器13讓第二無線通訊模組12在第一無線通訊模組11正進行接收時同時進行發射。由此可知,相較於現有技術,本發明並不完全秉持「分時多工」的原則,而是因為較大的電源電流Is具有較高的輸出功率,所以本發明通過量測供給第二無線通訊模組12的電源電流Is來辨別第二無線通訊模組12的輸出功率,並且根據電源電流Is的大小,決定讓第二無線通訊模組12等待直到第一無線通訊模組11結束接收後才進行發射,或者讓第二無線通訊模組12可與第一無線通訊模組11同時進行傳輸,即步驟S220或步驟S230,使得這種無線通訊模組共存更有效率。In contrast, as shown in FIG. 3B, when it is determined that the power supply current Is is not greater than the preset value, the microcontroller 13 allows the second
實務上,如圖1所示,第一無線通訊模組11和第二無線通訊模組12可分別至少包括收發器(Transceiver)和前端模組(Front End Module,FEM),且前端模組更可至少包括功率放大器(Power Amplifier,PA)。然而,由於各類無線通訊模組的運作原理已為本技術領域中具有通常知識者所習知,因此有關第一無線通訊模組11和第二無線通訊模組12的細節就不再多加贅述。需說明的是,因為前端模組和功率放大器的主要功能為增益和輸出功率,且功率放大器不僅可做為前端模組的一部分,它也可獨立受電,所以前述電源電流Is為電子裝置1的電源供應器14所供給第二無線通訊模組12的前端模組(或功率放大器)122的電流。In practice, as shown in FIG. 1, the first
電子裝置1更可至少包括電流感測器(Current Sensor)15,耦接於微控制器13、電源供應器14和第二無線通訊模組12的前端模組(或功率放大器)122間,用來量測電源供應器14所供給第二無線通訊模組12的前端模組(或功率放大器)122的電源電流Is。也就是說,在硬體設計上,本發明可通過在供給前端模組(或功率放大器)122的電流路徑上增加電流感測器15,以量測當前的電源電流Is作為判斷的參數。這樣一來,本發明將不需要在射頻(Radio Frequency,RF)路徑上增加任何額外元件,也就不會增加射頻路徑上的損失。The
另外,既然前端模組(或功率放大器)122是第二無線通訊模組12進行發射的主要元件,且其運作又必須得仰賴電源供應器14供電,所以在本實施例中,微控制器13更耦接電源供應器14,並根據電源電流Is與預設值的比較結果,控制電源供應器14關閉或開啟。由此可知,當比較結果指示電源電流Is大於預設值時,微控制器13控制電源供應器14關閉,以控制第二無線通訊模組12不發送資料,並且在第一無線通訊模組11結束接收後,微控制器13控制電源供應器14重新開啟,以控制第二無線通訊模組12發送資料。In addition, since the front-end module (or power amplifier) 122 is the main component of the second
值得一提的是,雖然本實施例透過微控制器13控制作為TX的第二無線通訊模組12,但針對作為RX,即正在進行接收的第一無線通訊模組11,電子裝置1還可至少包括電源供應器16和電流感測器17。電源供應器16用來提供電源電流Is2給第一無線通訊模組11的前端模組(或功率放大器)112。電流感測器17耦接於微控制器13、電源供應器16和第一無線通訊模組11的前端模組(或功率放大器)112間,用來量測電源供應器16所供給第一無線通訊模組11的前端模組(或功率放大器)112的電源電流Is2。It is worth mentioning that although the microcontroller 13 controls the second
如前所述,基於供給前端模組(或功率放大器)112對應不同輸出功率的電源電流Is,本實施例可建立一個電源電流Is與輸出功率對照圖表,使得微控制器13根據電流感測器15所量測到的電源電流Is,辨別出第二無線通訊模組12的輸出功率。請注意,雖然讓第二無線通訊模組12與第一無線通訊模組11同時進行傳輸會犧牲到第一無線通訊模組11的效能,但本實施例也可通過經驗法則得出在供給前端模組(或功率放大器)112多少的電源電流Is下,第二無線通訊模組12不會干擾或損壞到第一無線通訊模組11。因此,前述預設值可為電源電流Is不使得第二無線通訊模組12干擾或損壞到第一無線通訊模組11的上限值。As mentioned above, based on the power supply current Is corresponding to different output powers supplied to the front-end module (or power amplifier) 112, this embodiment can establish a power supply current Is and output power comparison chart, so that the microcontroller 13 is based on the
也就是說,一旦電源電流Is高於這上限,例如80mA,且如果這時候第一無線通訊模組11正進行接收的話,供電給前端模組(或功率放大器)112的電源供應器14將被關閉,直到第一無線通訊模組11完成接收後才重新開啟。相對地,在其它實施例中,電源供應器14的關閉與否也可由第一無線通訊模組11的工作頻率所決定,但此修改或變更並不悖離本發明的技術構想。另外,為了能夠讓微控制器13知道第一無線通訊模組11是否正在進行接收,本發明進一步提供了一種實施方式。In other words, once the power supply current Is is higher than the upper limit, for example 80mA, and if the first
如圖1所示,第一無線通訊模組11的收發器111可輸出一接收致能信號RX_EN到微控制器13的通用型輸入/輸出(GPIO)引腳,且微控制器13能藉由讀取接收致能信號RX_EN的準位而判斷第一無線通訊模組11是否正在進行接收。舉例來說,收發器111所輸出的接收致能信號RX_EN為高邏輯準位「1」代表第一無線通訊模組11正在進行接收,而接收致能信號RX_EN為低邏輯準位「0」代表第一無線通訊模組11沒有在進行接收,但本發明不以此為限制。因此,應當理解的是,圖3A中的信號RX_END更能夠用低邏輯準位「0」的接收致能信號RX_EN來取代,但此舉亦不影響本發明的實現,總而言之,本發明的傳輸排程方法可基於不同應用來做修改或變更。As shown in FIG. 1, the
請一併參閱圖4,圖4是本發明另一實施例所提供的傳輸排程方法的步驟流程圖。相較於圖2的傳輸排程方法,圖4的傳輸排程方法不限定在第一無線通訊模組11正進行接收下開始執行。如圖4所示,當有資料等待被第二無線通訊模組12發送時,電子裝置1先執行步驟S410,透過微控制器13判斷電子裝置1所供給第二無線通訊模組12的電源電流Is是否大於預設值,並且不論判斷結果為是或否,電子裝置1都會再透過微控制器13根據接收致能信號RX_EN的準位,判斷第一無線通訊模組11是否正在進行接收,即執行步驟S420或步驟S430。需注意的是,在其他實施例中,步驟410的順序與步驟420及步驟430的順序可以互相調換。也就是說,第一無線通訊模組11可先判斷是否在進行接收後,再判斷第二無線通訊模組12的電源電流Is是否大於預設值。Please also refer to FIG. 4, which is a flowchart of the steps of a transmission scheduling method according to another embodiment of the present invention. Compared with the transmission scheduling method of FIG. 2, the transmission scheduling method of FIG. 4 is not limited to start execution while the first
也就是說,當電源電流Is大於預設值,且第一無線通訊模組11正在進行接收時,電子裝置1執行步驟S440,透過微控制器13控制第二無線通訊模組12不發送資料直到第一無線通訊模組11結束接收。相對地,當電源電流Is不大於預設值,且第一無線通訊模組11正在進行接收時,電子裝置1執行步驟S450,透過微控制器13控制第二無線通訊模組12在第一無線通訊模組11正進行接收時同時發送資料。另外,當電源電流Is大於預設值,且第一無線通訊模組11不在進行接收時,或者當電源電流Is不大於預設值,且第一無線通訊模組11不在進行接收時,電子裝置1都會執行步驟S460,透過微控制器13控制第二無線通訊模組12發送資料。That is, when the power supply current Is is greater than the preset value and the first
由此可知,在圖1的電子裝置1所執行圖4的傳輸排程方法中,微控制器13根據電源電流Is與預設值的比較結果以及接收致能信號RX_EN的準位,控制電源供應器14關閉或開啟。舉例來說,可請一併參閱圖5,圖5是圖4的傳輸排程方法用表格形式來呈現電源供應器14關閉或開啟的狀態的示意圖。請注意,圖5的實施例同樣假設接收致能信號RX_EN為高邏輯準位「1」代表第一無線通訊模組11正在進行接收,而接收致能信號RX_EN為低邏輯準位「0」代表第一無線通訊模組11沒有在進行接收,但本發明不以此為限制。因此,如圖5所示,當電源電流Is超過限制,即電源電流Is大於預設值,且接收致能信號RX_EN為高邏輯準位「1」時,微控制器13控制電源供應器14關閉,以控制第二無線通訊模組12不發送資料,並且在第一無線通訊模組11結束接收後,微控制器13才控制電源供應器14重新開啟,以控制第二無線通訊模組12發送資料。由於各項細節已如同前述內容所述,故於此就不再多加贅述。It can be seen that in the transmission scheduling method of FIG. 4 executed by the
綜上所述,本發明實施例提供一種電子裝置及其傳輸排程方法。所述電子裝置及其傳輸排程方法是根據電源電流的大小,決定讓第二無線通訊模組等待至第一無線通訊模組完成接收後才進行發射,或者讓第二無線通訊模組可與第一無線通訊模組同時進行傳輸,使得這種無線通訊模組共存更有效率。除此之外,在硬體設計上,所述電子裝置是通過在供給第二無線通訊模組的前端模組(或功率放大器)的電流路徑上增加電流感測器,以量測當前的電源電流作為判斷的參數。這樣一來,所述電子裝置將不需要在射頻路徑上增加任何額外元件,也就不會增加射頻路徑上的損失。In summary, the embodiments of the present invention provide an electronic device and a transmission scheduling method thereof. The electronic device and its transmission scheduling method are based on the size of the power supply current, decide to let the second wireless communication module wait until the first wireless communication module completes reception before transmitting, or allow the second wireless communication module to communicate with The first wireless communication module transmits at the same time, which makes the coexistence of such wireless communication modules more efficient. In addition, in terms of hardware design, the electronic device measures the current power supply by adding a current sensor to the current path for the front-end module (or power amplifier) of the second wireless communication module. The current is used as a parameter for judgment. In this way, the electronic device will not need to add any additional components on the radio frequency path, and will not increase the loss on the radio frequency path.
以上所提供的內容僅為本發明的優選可行實施例,並非因此侷限本發明的申請專利範圍,所以凡是運用本發明說明書及圖式內容所做的等效技術變化,均包含於本發明的申請專利範圍內。The content provided above is only the preferred and feasible embodiments of the present invention, and does not limit the scope of the patent application of the present invention. Therefore, all equivalent technical changes made by using the description and schematic content of the present invention are included in the application of the present invention. Within the scope of the patent.
1:電子裝置
11:第一無線通訊模組
12:第二無線通訊模組
13:微控制器
14,16:電源供應器
15,17:電流感測器
111, 121:收發器
112, 122:前端模組(或功率放大器)
Is, Is2:電源電流
RX_END:信號
RX_EN:接收致能信號
S210~S230, S410~S460:流程步驟1: Electronic device
11: The first wireless communication module
12: The second wireless communication module
13:
圖1是本發明實施例所提供的電子裝置的功能方塊圖。FIG. 1 is a functional block diagram of an electronic device provided by an embodiment of the present invention.
圖2是本發明實施例所提供的傳輸排程方法的步驟流程圖。Fig. 2 is a flow chart of the steps of a transmission scheduling method provided by an embodiment of the present invention.
圖3A和圖3B是圖1的電子裝置所進行圖2的傳輸排程方法的時序示意圖。3A and 3B are time sequence diagrams of the transmission scheduling method of FIG. 2 performed by the electronic device of FIG. 1.
圖4是本發明另一實施例所提供的傳輸排程方法的步驟流程圖。FIG. 4 is a flowchart of the steps of a transmission scheduling method provided by another embodiment of the present invention.
圖5是圖4的傳輸排程方法用表格形式來呈現電源供應器關閉或開啟的狀態的示意圖。FIG. 5 is a schematic diagram of the transmission scheduling method of FIG. 4 showing a power supply off or on state in the form of a table.
S210~S230:流程步驟 S210~S230: Process steps
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