201210358 六、發明說明： 【發明所屬之技術領域】 本發明係有關功率餘量報告，尤其有關在採用載波聚 合技術的通信網路中報告用戶終端設備的功率餘量的方法 及裝置。 【先前技術】 上行系統的功率餘量（PH)報告可將用戶終端設備的 功率相關資訊提供給基站’以協助基站進行資源調度。在 LTE (長期演進）系統中’功率餘量報告所包括的資訊爲 用戶終端設備的標稱最大發送功率與上行共用通道的估算 發送功率之間的差値。 圖la和圖lb分別是LTE系統中上報功率餘量的MAC PDU (媒體存取控制協定資料單位）子標頭與功率餘量 MAC控制單兀（element)的不意圖。圖la所示的子標頭的 長度爲1個位元組。R爲預留欄位（f i e 1 d )，設爲“ ； E爲 擴充欄位，用以指示MAC標頭中是否有更多的欄位：LCID 爲邏輯通道識別碼（Logical Channel ID )欄位，用以標識 後續的MAC酬載（payload)的邏輯通道實體，5個位元的 LCID對應有32個索引，其中一部分的索引（01011至11001 )爲預留的索引，亦即，還沒有被使用。圖lb所示的功率 餘量MAC控制單元的長度爲1個位元組。R爲預留欄位，設 爲“0” ； P Η爲6個位元的功率餘量欄位，用以指示功率餘量 。在LTE中，在報告功率餘量時，一個子標頭對應於一個 201210358 功率餘量MAC控制單元，亦即，圖1 a中的子標頭透過LCID 欄位來標識圖lb中的功率餘量M AC控制單元。 【發明內容】 本發明的發明人意識到，在引入載波聚合的LTE-A (LTE-Advanced)系統中，LTE所使用的功率餘量報告機 制不能滿足多個分量載波（component carrier )的需求。 在引入載波聚合的LTE-A的系統中，基站以及用戶終端設 備可支援在多個分量載波上的資料傳輸。由於各個分量載 波所對應的通道狀況會有所不同並且各個分量載波獨立地 進行功率控制，各個分量載波的功率餘量可能會不同，因 此一個用戶終端設備需要將各個分量載波的功率餘量資訊 報告給基站。關於多個分量載波的功率餘量資訊可分別在 各自的分量載波上傳輸、只在一個分量載波上傳輸或者使 用其他方式來傳輸。此外，如果在多個分量載波中設定一 個分量載波爲主載波，則還需將主載波的資料通道和控制 通道的通道功率餘量分別向基站報告。現有的功率餘量報 告機制無法滿足上述多個需求，亦即，無法實現多分量載 波的功率餘量的報告。 基於上述對先前技術以及相關問題的理解，如果能夠 實現將多個分量載波的功率餘量報告給基站將是非常重要 的。此外，如果能在儘量少改動現有的LTE的功率餘量報 告機制的前提下實現多個分量載波的功率餘量報告也是非 常有意義的。 -6- 201210358 爲了更好的解決上述考量，根據本發明的第一樣態的 一個實施例’提供有一種在一個用戶終端設備中用以將功 率餘量相關資訊報告給一個網路設備的方法。該用戶終端 設備的發送通道係設置有多個分量載波，所述功率餘量相 關資訊指示該用戶終端設備在所述多個分量載波中的至少 —個分量載波的通道功率餘量。該方法包括以下步驟： 獲取所述功率餘量相關資訊； -根據所述功率餘量相關資訊來確定一個標頭和至少 —個功率餘量控制單元，所述至少一個功率餘量控制單元 包括所述功率餘量相關資訊，該標頭包括用以指示所述功 率餘量相關資訊在所述至少一個功率餘量控制單元中的第 一發送格式的至少一個位元的資訊和/或所述至少一個功 率餘量控制單元包括用以指示所述功率餘量相關資訊在所 述至少一個功率餘量控制單元中的第二發送格式的至少一 個位元的資訊；以及 -在所述多個分量載波中的一個分量載波上發送一個 資料包至所述網路設備，該資料包包括所述標頭和所述至 少一個功率餘量控制單元。 由於標頭和/或功率餘量控制單元中的部分位元資訊 指示功率餘量相關資訊的發送格式，亦即，如何將關於至 少一個分量載波的通道功率餘量的功率餘量相關資訊在一 個分量載波上發送，當用戶終端設備可能會以多種方式而 在一個分量載波上發送至少一個分量載波的通道功率餘量 時，就可以讓網路設備能夠確定用戶終端設備所發送的通 201210358 道功率餘量相關資訊的發送格式，從而可以正確的接收並 確定至少一個分量載波的通道功率餘量。因此，用戶終端 設備可選用多種方式而將多個分量載波的通道功率餘量報 告給網路設備，從而在採用載波聚合技術的通信網路中實 現了用戶終端設備的功率餘量報告。 根據本發明的第二樣態的一個實施例，提供有一種在 一個網路設備中確定一個用戶終端設備的功率餘量相關資 訊的方法。該用戶終端設備的發送通道係設置有多個分量 載波，所述功率餘量相關資訊指示該用戶終端設備在所述 多個分量載波中的至少一個分量載波的通道功率餘量。該 方法包括以下步驟： -從用戶終端設備接收一個資料包，該資料包包括一 個標頭和至少一個功率餘量控制單元，所述至少一個功率 餘量控制單元包括所述功率餘量相關資訊，該標頭包括用 以指示所述功率餘量相關資訊在所述至少一個功率餘量控 制單元中的第一發送格式的至少一個位元的資訊和/或所 述至少一個功率餘量控制單元包括用以指示所述功率餘量 相關資訊在所述至少一個功率餘量控制單元中的第二發送 格式的至少一個位元的資訊：以及 -根據所述標頭和所述至少一個功率餘量控制單元， 以確定所述功率餘量相關資訊。 根據本發明的第三樣態的一個實施例，提供有一種在 一個用戶終端設備中用以將功率餘量相關資訊報告給一個 網路設備的報告裝置。該用戶終端設備的發送通道係設置 -8- 201210358 有多個分量載波’所述功率餘量相關資訊指示該用戶終端 設備在所述多個分量載波中的至少一個分量載波的通道功 率餘量。該報告裝置包括： 一個第一裝置’其用以獲取所述功率餘量相關資訊； 一個第二裝置’其用以根據所述功率餘量相關資訊來 確定一個標頭和至少一個功率餘量控制單元，所述至少一 個功率餘量控制單兀包括所述功率餘量相關資訊，該標頭 包括用以指示所述功率餘量相關資訊在所述至少一個功率 餘量控制單元中的第一發送格式的至少一個位元的資訊和 /或所述至少一個功率餘量控制單元包括用以指示所述功 率餘量相關資訊在所述至少一個功率餘量控制單元中的第 二發送格式的至少一個位元的資訊；以及 —個第三裝置，其用以在所述多個分量載波中的一個 分量載波上發送一個資料包至所述網路設備，該資料包包 括所述標頭和所述至少一個功率餘量控制單元。 根據本發明的第四樣態的一個實施例，提供有—種在 一個網路設備中獲取一個用戶終端設備的功率餘量相關資 訊的獲取裝置。該用戶終端設備的發送通道係設置有多個 分量載波，所述功率餘量相關資訊指示該用戶終端設備在 所述多個分量載波中的至少一個分量載波的通道功率餘量 。該獲取裝置包括： 一個第四裝置，其用以從用戶終端設備接收一個資料 包’該資料包包括一個標頭和至少一個功率餘量控制單元 ，所述至少一個功率餘量控制單元包括所述功率餘量相關 -9 - 201210358 資訊’該標頭包括用以指示所述功率餘量相關資訊在所述 至少一個功率餘量控制單元中的第一發送格式的至少一個 位元的資訊和/或所述至少一個功率餘量控制單元包括用 以指示所述功率餘量相關資訊在所述至少一個功率餘量控 制單元中的第二發送格式的至少一個位元的資訊；以及 一個第五裝置，其用以根據所述標頭和所述至少一個 功率餘量控制單元，以確定所述功率餘量相關資訊。 本發明的各個樣態將透過下文中的實施例的說明而更 加清晰。 【實施方式】 圖2是根據本發明的一個實施例之在用戶終端設備中 用以將功率餘量相關資訊報告給網路設備的方法的流程圖 〇 根據本發明的第一樣態的一個實施例，提供有一種在 一個用戶終端設備中用以將功率餘量相關資訊報告給一個 網路設備的方法。用戶終端設備可透過多種方式來予以實 現’例如手機或筆記型電腦等。網路設備可透過多種方式 來予以實現，例如基站或者中繼站等。 該用戶終端設備的發送通道設置有多個分量載波’功 率餘量相關資訊指示該用戶終端設備在多個分量載波中的 至少一個分量載波的通道功率餘量。用戶終端設備的發送 通道爲用戶終端設備用以發送控制資訊和資料資訊至網路 設備的通道。 -10- 201210358 通道功率餘量可爲對應於多種通道的功率餘量’諸如 用戶終端設備對應於一個分量載波的資料通道（例如，實 體上行共用通道（PUSCH))的功率餘量或對應於一個分量 載波的控制通道（例如，實體上行控制通道（PUCCH))的 功率餘量。可透過多種方式來獲取通道功率餘量。例如， 通道功率餘量爲用戶終端設備的標稱最大發射功率與 PUSCH的估算發送功率之間的差値。又如，通道功率餘量 爲用戶終端設備的標稱最大發射功率與PUCCH的估算發送 功率之間的差値。再如，通道功率餘量爲用戶終端設備的 標稱最大發射功率與PUSCH及PUCCH的總估算發送功率之 間的差値。 參照圖2，該方法包括步驟210，用戶終端設備獲取功 率餘量相關資訊。功率餘量相關資訊可以用多種方式來表 示，如LTE中的6位元的PH欄位。可參照表1，根據通道功 率餘量所屬的功率餘量等級，以確定功率餘量相關資訊， 亦即，6個位元的PH欄位。諸如，一個分量載波的功率餘 量屬於功率餘量登記P〇WER_HEADROOM_3，則PH欄位爲 201210358 表1 PH 功率餘量等級 0 POWER HEADROOM 0 1 POWER HEADROOM 1 2 POWER HEADROOM 2 3 POWER HEADROOM 3 60 POWER HEADROOM 60 61 POWER HEADROOM 61 62 POWER HEADROOM 62 63 POWER HEADROOM 63 該方法還包括步驟220，用戶終端設備根據功率餘量 相關資訊來確定一個標頭和至少一個功率餘量控制單元。 至少一個功率餘量控制單元包括功率餘量相關資訊。標頭 包括至少一個位元的資訊，該至少一個位元的資訊用以指 示功率餘量相關資訊在至少一個功率餘量控制單元中的第 一發送格式；和/或至少一個功率餘量控制單元包括至少 —個位元的資訊，該至少一個位元的資訊用以指示功率餘 量相關資訊在至少一個功率餘量控制單元中的第二發送格 式。 第一發送格式爲功率餘量相關資訊的發送格式。例如 ，第一發送格式包括至少一個分量載波的通道功率餘量所 對應的通道類型，諸如數據通道的功率餘量或控制通道的 功率餘量等。又如，第一發送格式包括至少一個功率餘量 控制單元的位元長度，諸如功率餘量控制單元一共佔用了 42個位元。再如，第一發送格式包括至少一個分量載波的 -12- 201210358 載波索引：諸如，將各分量載波的通道進行編號後，用指 示編號的方式來索引分量載波；或者，預先定義發送各分 量載波的通道傳輸功率的順序以及相應的指示位元，透過 設置相應的指示位元的數値來索引分量載波。又如，第一 發送格式包括至少一個功率餘量控制單元的單元數目，諸 如，一個標頭對應兩個功率餘量控制單元。 第二發送格式爲功率餘量相關資訊的發送格式。例如 ，第二發送格式包括至少一個分量載波的載波索引：諸如 ’將各分量載波的通道進行編號後，用指示編號的方式來 索引分量載波；或者’預先定義發送各分量載波的通道傳 輸功率的順序以及相應的指示位元，透過設置相應的指示 位元的數値來索引分量載波。 第一發送格式和第二發送格式可分別用來表示功率餘 量相關資訊的發送格式或者共同來表示功率餘量相關資訊 的發送格式。也就是說’可以僅用標頭所包括的至少一個 位元來指示功率餘量相關資訊的發送格式；或可以僅用功 率餘量控制單元所包括的至少一個位元來指示功率餘量相 關資訊的發送格式；或者用標頭所包括的至少一個位元以 及功率餘量控制單元所包括的至少一個位元共同來指示功 率餘量相關資訊的發送格式。下面會有更多具體的實施例 來說明如何用標頭和功率餘量控制單元以指示功率餘量相 關資訊的發送格式。 該方法還包括步驟23 0，用戶終端設備在多個分量載 波中的一個分量載波上發送一個資料包至網路設備，該資 -13- 201210358 料包包括標頭和至少一個功率餘量控制單元。一個分量載 波可僅報告其自身的通道的功率餘量，還可報告其他一個 或多個分量載波的通道的功率餘量。 由於標頭和/或功率餘量控制單元中的部分位元資訊 指示功率餘量相關資訊的發送格式，亦即，如何將至少— 個分量載波的通道功率餘量相關資訊在一個分量載波上發 送，當用戶終端設備可能會以多種方式在一個分量載波上 發送至少一個分量載波的通道功率餘量時，就可以讓網路 設備確定至少一個分量載波的通道功率餘量的發送格式， 從而可以正確地接收並確定至少一個分量載波的通道功率 餘量。因此，用戶終端設備可選用多種方式而將多個分量 載波的通道功率餘量報告給網路設備，從而在採用載波聚 合技術的通信網路中實現用戶終端設備的功率餘量報告。 標頭和至少一個功率餘量控制單元可透過多種方式來 指示功率餘量相關資訊的發送格式。下面將透過多個實施 例來做具體的說明用戶終端設備報告功率餘量相關資訊的 方法。 •如果在各分量載波上僅發送各自的功率餘量報告， —個分量載波的資料通道功率餘量和控制通道功率餘量可 分別使用不同的標頭或者共用一個標頭。 在一個實施例中，資料通道功率餘量和控制通道功率 餘量共用一個標頭’並且後續的兩個功率餘量控制單元。 當實體層獲取該載波分量是主分量載波時，將該資訊傳輸 給MAC層。MAC就知道該PDU中包含兩個功率餘量控制單 -14- 201210358 元。 在一個實施例中，資料通道功率餘量和控制通道功率 餘量共用一個標頭，可使用圖la所示的子標頭來做標頭， 並透過一個位兀的預留欄位（諸如，圖la中的第—個r欄 位）來指示資料通道功率餘量和控制通道功率餘量的發送 格式。例如’當第一個R欄位爲“ 0 ”時，功率餘量控制單元 爲圖lb所示的一個控制單元，並僅發送資料通道功率餘量 :當第一個R欄位爲“1”時，至少一個功率餘量控制單元包 括圖lb所示的兩個控制單元，第一個控制單元發送資料通 道功率餘量’第二個控制單元發送控制通道功率餘量。類 似的’也可使用圖lb所示的控制單元中的預留欄位（亦即 ，R欄位）來指示資料通道功率餘量和控制通道功率餘量 的發送格式’亦即，指示標頭所對應的功率餘量控制單元 所對應的通道數目。類似的，也可以使用圖^所示的邏輯 通道識別碼欄位中的預留的索引來予以指示，至少一個功 率餘量控制單元包括圖lb所示的兩個控制單元。 在又一個實施例中，一個分量載波的資料通道功率餘 量和控制通道功率餘量分別使用各自的標頭，可使用圖i a 所示的子標頭來做標頭。當第二個R欄位爲“〇，’時，功率餘 量控制單元爲圖lb所示的一個控制單元，並僅發送資料通 道功率餘量；當第二個R欄位爲“〗，，時，功率餘量控制單元 爲圖lb所示的—個控制單元，並僅發送控制通道功率餘量 。類似的，也可以使用圖13所示的邏輯通道識別碼欄位中 的預留的索引來指示資料通道功率餘量和控制通道功率餘 -15- 201210358 量的發送格式，亦即，指示標頭所對應的功率餘量控制單 元所對應的通道類型。 在上述實施例中，標頭所包括之用以指示第一發送格 式的至少一個位元的資訊分別爲預留欄位和邏輯通道識別 碼欄位。上述實施例利用了 LTE中已有的子標頭和控制單 元，對現有系統的改動較小，能夠實現系統的平滑過渡。 •如果在一個分量載波上可發送除自身以外的其他至 少一個分量載波的功率餘量報告，不同的分量載波的功率 餘量報告可分別使用不同的標頭或者共用一個標頭。 圖3 a至圖3 c分別是根據本發明的一個實施例之標頭和 功率餘量控制單元的示意圖。假設用戶終端設備的發送通 道使用五個分量載波，其中一個分量載波爲設有控制通道 和資料通道的主分量載波（Primary C omponent Carrier ) ，其他分量載波爲僅設有資料通道的輔分量載波（ Secondary Component Carrier )。圖 3a戶斤示的爲 LTE 中用 來標識MAC SDU( Service Data Unit)的子標頭，其中， F欄位指示L欄位的大小，L欄位用來指示s D U的大小。可 用圖3 a所示的子標頭作爲標頭來指示第一發送格式，用圖 3a中的LCID欄位來指示該標頭所對應的功率餘量控制單元 中可最多包括有六個通道功率餘量，用L欄位來指示功率 餘量控制單元的長度，即位元數或者位元組數。圖3b和圖 3c爲在一個分量載波上報告六個通道功率餘量的功率餘量 控制單元。六個B欄位用於指示第二發送格式，分別對應 於六個通道（亦即，五個分量載波上的資料通道和一個主 -16- 201210358 分量載波上的控制通道），“1”表示對應的通道存在功率 餘量報告，“0”表示對應的通道不存在功率餘量報告。P攔 位是塡充（padding)欄位，用來保證功率餘量控制單元 所包括的位元數是8的整數倍，以便按照位元組的方式形 成資料單元。圖3b表示了報告了六個通道功率餘量的功率 餘量控制單元’圖3c表示了報告了五個通道功率餘量的功 率餘量控制單元。 圖4a和圖4b分別是根據本發明的又一個實施例之標頭 和功率餘量控制單元的示意圖。在圖4a所示的標頭中，包 括了 B欄位，在圖4b所示的功率餘量控制單元中，也包括 了 B欄位。標頭中的B欄位和功率餘量控制單元中的b欄位 共同用以指示六個通道的功率餘量報告的發送方式，“1” 表示對應的通道存在有功率餘量報告，“〇，’表示對應的通 道不存在有功率餘量報告。圖4a和圖4b所示的標頭和功率 餘量控制單元報告了六個通道功率餘量》 在又一個實施例中’如果在一個分量載波上發送另外 —個分量載波的功率餘量報告，可使用圖la所示的子標頭 作爲標頭’用圖1 b所不的控制單元作爲功率餘量控制單元 。如果共有六個分量載波通道，在圖la和圖lb中的四個R 欄位中選三個R欄位用來索引要發送的分量載波通道的功 率餘量報告’諸如’ 001表示主分量載波的控制通道的功 率餘量報告。用圖la中的LCID欄位來指示僅報告一個分量 載波通道的功率餘量。 在再一個實施例中’用圖la中的LCID欄位來索引要被 •17- 201210358 發送的分量載波通道的功率餘量報告。 圖5是根據本發明的一個實施例之在網路設備中確定 用戶終端設備的功率餘量相關資訊的方法的流程圖。 根據本發明的第二樣態的一個實施例，提供有一種在 一個網路設備中確定一個用戶終端設備的功率餘量相關資 訊的方法。 該用戶終端設備的發送通道係設置有多個分量載波。 功率餘量相關資訊指示該用戶終端設備在多個分量載波中 的至少一個分量載波的通道功率餘量。 參照圖5，該方法包括步驟510，網路設備從用戶終端 設備接收一個資料包，該資料包包括一個標頭和至少一個 功率餘量控制單元。至少一個功率餘量控制單元包括所述 功率餘量相關資訊。該標頭包括用以指示功率餘量相關資 訊在至少一個功率餘量控制單元中的第一發送格式的至少 一個位元的資訊和/或至少一個功率餘量控制單元包括用 以指示所述功率餘量相關資訊在至少一個功率餘量控制單 元中的第二發送格式的至少一個位元的資訊。 該方法還包括步驟520，網路設備根據標頭和至少一 個功率餘量控制單元，以確定功率餘量相關資訊。 網路設備獲取功率餘量相關資訊的方法與上述的用戶 終端設備報告功率餘量相關資訊的多個實施例相對應，在 此不再贅述。 圖6爲根據本發明的一個實施例之在用戶終端設備中 用以將功率餘量相關資訊報告給網路設備的報告裝置的示 -18- 201210358 意圖。 根據本發明的第三樣態的一個實施例，提供有一種在 一個用戶終端設備中用以將功率餘量相關資訊報告給一個 網路設備的報告裝置》 該用戶終端設備的發送通道係設置有多個分量載波。 功率餘量相關資訊指示該用戶終端設備在多個分量載波中 的至少一個分量載波的通道功率餘量。 參照圖6，報告裝置600包括一個第一裝置610、一個 第二裝置62 0以及一個第三裝置630。 第一裝置610用以獲取功率餘量相關資訊。 第二裝置620用以根據功率餘量相關資訊來確定一個 標頭和至少一個功率餘量控制單元。至少一個功率餘量控 制單元包括功率餘量相關資訊，該標頭包括用以指示功率 餘量相關資訊在至少一個功率餘量控制單元中的第一發送 格式的至少一個位元的資訊和/或至少一個功率餘量控制 單元包括用以指示功率餘量相關資訊在至少一個功率餘量 控制單元中的第二發送格式的至少一個位元的資訊。 第三裝置630用以在多個分量載波中的一個分量載波 上發送一個資料包至網路設備，該資料包包括標頭和至少 一個功率餘量控制單元。 報告裝置600中的第一裝置610、第二裝置620以及第 三裝置630所實現的功能與上述的用戶終端設備報告功率 餘量相關資訊的多個實施例相對應，在此不再贅述。 圖7爲根據本發明的一個實施例之在網路設備中獲取 -19- 201210358 用戶終端設備的功率餘量相關資訊的獲取裝置的示意圖。 根據本發明的第四樣態的一個實施例，提供有一種在 一個網路設備中獲取一個用戶終端設備的功率餘量相關資 訊的獲取裝置。 該用戶終端設備的發送通道係設置有多個分量載波。 功率餘量相關資訊指示該用戶終端設備在所述多個分量載 波中的至少一個分量載波的通道功率餘量。 參照圖7，獲取裝置700包括一個第四裝置710以及一 個第五裝置720。 第四裝置710用以從用戶終端設備接收一個資料包， 該資料包包括一個標頭和至少一個功率餘量控制單元。至 少一個功率餘量控制單元包括所述功率餘量相關資訊，該 標頭包括用以指示功率餘量相關資訊在至少一個功率餘量 控制單元中的第一發送格式的至少一個位元的資訊和/或 至少一個功率餘量控制單元包括用以指示功率餘量相關資 訊在至少一個功率餘量控制單元中的第二發送格式的至少 一個位元的資訊。 第五裝置7 2 0用於根據標頭和至少—個功率餘量控制 單兀’確定功率餘量相關資訊。 獲取裝置700中的第四裝置710和第五裝置720獲取通 道功率餘量資訊的方法與上述的用戶終端設備報告功率餘 量相關資訊的多個實施例相對應，在此不再贅述。 對於本領域技術人員而言，顯然本發明不限於上述示 範性實施例的細節，而且在不背離本發明的精神或基本特 -20- 201210358 徵的情況下’能夠以其他的具體形式來實現本發明。因此 ’無論從哪一點來看，均應將實施例看作是示範性的，而 且是非限制性的，本發明的範圍由所附之申請專利範圍而 不是上述說明來予以限定，因此旨在將落在申請專利範圍 的等同要件的含義和範圍內的所有變化囊括在本發明內。 不應將申請專利範圍中的任何附圖標記視爲限制所涉及的 申請專利範圍。此外，顯然“包括”一詞不排除其他單元或 步驟’單數不排除複數。系統請求項中陳述的多個裝置也 可以由一個裝置透過軟體或者硬體來予以實現。第一，第 二等詞語用來表示名稱，而並不表示任何特定的順序。 【圖式簡單說明】 透過閱讀參照以下附圖所做之對非限制性實施例所做 的詳細描述’本發明之上述及其它特徵、目的和優點將會 變得更加明顯： 圖la和圖lb分別是LTE系統中上報功率餘量的MAC PDU子標頭與功率餘量MAC控制單元的示意圖； 圖2是根據本發明的一個實施例之在用戶終端設備中 用以將功率餘量相關資訊報告給網路設備的方法的流程圖 t 圖3 a至圖3 c分別是根據本發明的一個實施例之標頭和 功率餘量控制單元的示意圖； 圖4a和圖4b分別是根據本發明的又—個實施例之標頭 和功率餘量控制單元的示意圖； • 21 - 201210358 圖5是根據本發明的一個實施例之在網路設備中確定 用戶終端設備的功率餘量相關資訊的方法的流程圖； 圖6是根據本發明的一個實施例之在用戶終端設備中 用以將功率餘量相關資訊報告給網路設備的報告裝置的示 意圖；以及 圖7爲根據本發明的一個實施例之在網路設備中獲取 用戶終端設備的功率餘量相關資訊的獲取裝置的示意圖。 附圖中相同或者相似的附圖標識代表相同或者相似的 部件。 【主要元件符號說明】 6〇〇 :報告裝置 610 :第一裝置 620 :第二裝置 63 0 :第三裝置 7〇〇 :獲取裝置 710 :第四裝置 720 :第五裝置 -22-201210358 VI. Description of the Invention: [Technical Field] The present invention relates to a power headroom report, and more particularly to a method and apparatus for reporting a power headroom of a user terminal device in a communication network employing carrier aggregation technology. [Prior Art] The power headroom (PH) report of the uplink system can provide power related information of the user terminal equipment to the base station' to assist the base station in resource scheduling. The information included in the 'Power Headroom Report' in the LTE (Long Term Evolution) system is the difference between the nominal maximum transmit power of the user terminal equipment and the estimated transmit power of the uplink shared channel. 1a and 1b are the intentions of the MAC PDU (Media Access Control Protocol Data Unit) subheader and the power headroom MAC control element in the LTE system, respectively. The subheader shown in Figure la has a length of 1 byte. R is the reserved field (fie 1 d ), set to “ ; E is an extension field to indicate whether there are more fields in the MAC header: LCID is the logical channel ID (Logical Channel ID) field a logical channel entity for identifying a subsequent MAC payload. The LCID of 5 bits corresponds to 32 indexes, and a part of the index (01011 to 11001) is a reserved index, that is, has not been The power headroom MAC control unit shown in Figure lb has a length of 1 byte. R is reserved field and is set to "0"; P Η is 6 bits of power margin field. To indicate the power headroom. In LTE, when reporting the power headroom, a subheader corresponds to a 201210358 power headroom MAC control unit, that is, the subheader in Figure 1a identifies the picture through the LCID field. Power headroom M AC control unit in lb. SUMMARY OF THE INVENTION The inventors of the present invention have realized that in an LTE-A (LTE-Advanced) system incorporating carrier aggregation, the power headroom reporting mechanism used by LTE cannot be satisfied. Demand for multiple component carriers. Introducing carrier aggregation In the LTE-A system, the base station and the user terminal equipment can support data transmission on multiple component carriers. Since the channel conditions corresponding to the respective component carriers are different and the individual component carriers independently perform power control, each component carrier The power headroom may be different, so a user terminal equipment needs to report the power headroom information of each component carrier to the base station. The power headroom information about multiple component carriers can be transmitted on the respective component carriers, only in one The component carrier transmits or uses other methods for transmission. In addition, if one component carrier is set as the primary carrier in multiple component carriers, the channel power margin of the primary carrier and the channel power of the control channel need to be reported to the base station, respectively. The existing power headroom reporting mechanism cannot meet the above multiple requirements, that is, the power headroom of the multi-component carrier cannot be reported. Based on the above understanding of the prior art and related problems, if the power of multiple component carriers can be realized It will be very important to report the remaining amount to the base station. It is also very meaningful to realize the power headroom reporting of multiple component carriers under the premise of minimizing the existing LTE power headroom reporting mechanism. -6- 201210358 In order to better solve the above considerations, according to the present invention An embodiment of the same state provides a method for reporting power headroom related information to a network device in a user terminal device. The transmission channel of the user terminal device is provided with a plurality of component carriers. The power head related information indicates a channel power margin of the at least one component carrier of the user terminal equipment in the plurality of component carriers. The method comprises the steps of: obtaining the power head related information; determining a header and at least one power headroom control unit according to the power headroom related information, wherein the at least one power headroom control unit comprises Deriving power head related information, the header including information indicating at least one bit of the first transmission format of the power headroom related information in the at least one power headroom control unit and/or the at least a power headroom control unit includes information indicating at least one bit of the second transmission format of the power headroom related information in the at least one power headroom control unit; and - at the plurality of component carriers A packet is sent to the network device on a component carrier, the packet including the header and the at least one power headroom control unit. Since the partial bit information in the header and/or power headroom control unit indicates the transmission format of the power headroom related information, that is, how to correlate the power headroom information about the channel power headroom of the at least one component carrier in one Transmitting on a component carrier, when the user terminal device may transmit the channel power margin of the at least one component carrier on one component carrier in multiple manners, the network device can determine the power of the 201210358 channel transmitted by the user terminal device. The transmission format of the remaining related information, so that the channel power margin of at least one component carrier can be correctly received and determined. Therefore, the user terminal equipment can report the channel power margin of the plurality of component carriers to the network device in a plurality of manners, thereby realizing the power headroom report of the user terminal equipment in the communication network using the carrier aggregation technology. According to an embodiment of the second aspect of the present invention, there is provided a method of determining a power headroom related information of a user terminal device in a network device. The transmission channel of the user equipment is configured with a plurality of component carriers, and the power headroom related information indicates a channel power margin of the at least one component carrier of the user equipment equipment. The method comprises the steps of: - receiving a data packet from a user terminal device, the data packet comprising a header and at least one power headroom control unit, the at least one power headroom control unit comprising the power headroom related information, The header includes information indicating at least one bit of the first transmission format of the power headroom related information in the at least one power headroom control unit and/or the at least one power headroom control unit includes Information indicating at least one bit of the second transmission format of the power headroom related information in the at least one power headroom control unit: and - controlling according to the header and the at least one power headroom a unit to determine the power head related information. According to an embodiment of the third aspect of the present invention, there is provided a reporting apparatus for reporting power headroom related information to a network device in a user terminal device. The transmission channel setting of the user equipment is -8-201210358. There are multiple component carriers. The power headroom related information indicates the channel power margin of the at least one component carrier of the user equipment in the plurality of component carriers. The reporting device includes: a first device 'to obtain the power headroom related information; a second device' to determine a header and at least one power headroom control according to the power headroom related information a unit, the at least one power headroom control unit includes the power headroom related information, the header including a first transmission to indicate the power headroom related information in the at least one power headroom control unit Information of at least one bit of the format and/or the at least one power headroom control unit includes at least one of a second transmission format to indicate that the power headroom related information is in the at least one power headroom control unit Bit information; and a third device for transmitting a data packet to the network device on one of the plurality of component carriers, the data packet including the header and the At least one power headroom control unit. According to an embodiment of the fourth aspect of the present invention, there is provided an apparatus for acquiring power head related information of a user terminal device in a network device. The transmission channel of the user equipment is configured with a plurality of component carriers, and the power headroom related information indicates a channel power margin of the at least one component carrier of the user equipment equipment. The obtaining means comprises: a fourth device for receiving a data packet from the user terminal device, the data packet comprising a header and at least one power headroom control unit, the at least one power headroom control unit comprising the Power head related -9 - 201210358 Information 'The header includes information indicating at least one bit of the first transmission format of the power headroom related information in the at least one power headroom control unit and/or The at least one power headroom control unit includes information indicating at least one bit of the second transmission format of the power headroom related information in the at least one power headroom control unit; and a fifth device, It is used to determine the power headroom related information according to the header and the at least one power headroom control unit. Various aspects of the invention will be apparent from the description of the embodiments hereinafter. [Embodiment] FIG. 2 is a flowchart of a method for reporting power headroom related information to a network device in a user terminal device according to an embodiment of the present invention, an implementation according to a first aspect of the present invention. For example, a method for reporting power headroom related information to a network device in a user terminal device is provided. The user terminal device can be implemented in a variety of ways, such as a mobile phone or a notebook computer. Network devices can be implemented in a variety of ways, such as base stations or relay stations. The transmission channel of the user terminal device is provided with a plurality of component carriers. The power margin related information indicates a channel power margin of the at least one component carrier of the plurality of component carriers of the user terminal device. The transmission channel of the user terminal device is a channel used by the user terminal device to send control information and data information to the network device. -10- 201210358 The channel power headroom may be a power headroom corresponding to a plurality of channels, such as a power headroom of a data channel (eg, a physical uplink shared channel (PUSCH)) corresponding to one component carrier of the user terminal device or corresponding to one The power headroom of the control channel of the component carrier (eg, Physical Uplink Control Channel (PUCCH)). Channel power headroom can be obtained in a variety of ways. For example, the channel power headroom is the difference between the nominal maximum transmit power of the user terminal equipment and the estimated transmit power of the PUSCH. As another example, the channel power headroom is the difference between the nominal maximum transmit power of the user equipment and the estimated transmit power of the PUCCH. As another example, the channel power headroom is the difference between the nominal maximum transmit power of the user equipment and the total estimated transmit power of the PUSCH and PUCCH. Referring to FIG. 2, the method includes the step 210: the user terminal device obtains power balance related information. The power head related information can be expressed in a variety of ways, such as the 6-bit PH field in LTE. Referring to Table 1, the power headroom related information, that is, the 6-bit PH field, is determined according to the power headroom to which the channel power margin belongs. For example, the power headroom of one component carrier belongs to the power headroom registration P〇WER_HEADROOM_3, then the PH field is 201210358. Table 1 PH power headroom level 0 POWER HEADROOM 0 1 POWER HEADROOM 1 2 POWER HEADROOM 2 3 POWER HEADROOM 3 60 POWER HEADROOM 60 61 POWER HEADROOM 61 62 POWER HEADROOM 62 63 POWER HEADROOM 63 The method further comprises a step 220 of determining, by the user terminal device, a header and at least one power headroom control unit based on the power headroom related information. At least one power headroom control unit includes power headroom related information. The header includes information of at least one bit, the information of the at least one bit being used to indicate a first transmission format of the power headroom related information in the at least one power headroom control unit; and/or at least one power headroom control unit The information includes at least one bit, and the information of the at least one bit is used to indicate a second transmission format of the power head related information in the at least one power headroom control unit. The first transmission format is a transmission format of the power head related information. For example, the first transmission format includes a channel type corresponding to a channel power margin of at least one component carrier, such as a power headroom of a data channel or a power headroom of a control channel. As another example, the first transmission format includes the bit length of at least one power headroom control unit, such as the power headroom control unit consuming a total of 42 bits. For another example, the first transmission format includes a -12-201210358 carrier index of at least one component carrier: for example, after numbering channels of each component carrier, indexing component carriers by means of indicator numbers; or, pre-defining transmitting component carriers The order of the channel transmission power and the corresponding indicator bit are indexed by setting the number of corresponding indication bits. As another example, the first transmission format includes the number of cells of at least one power headroom control unit, such as one header corresponding to two power headroom control units. The second transmission format is a transmission format of the power head related information. For example, the second transmission format includes a carrier index of at least one component carrier: such as 'indexing the channel of each component carrier, indexing the component carrier by means of the indicator number; or 'predefining the channel transmission power of each component carrier The order and the corresponding indicator bit are indexed by setting the number of corresponding indication bits. The first transmission format and the second transmission format may be used to respectively indicate a transmission format of the power head related information or a transmission format in which the power head related information is collectively indicated. That is to say, 'the transmission format of the power headroom related information may be indicated by at least one bit included in the header; or the power headroom related information may be indicated by only at least one bit included in the power headroom control unit. The transmission format of the power headroom related information is indicated by at least one bit included in the header and at least one bit included in the power headroom control unit. There are more specific embodiments below to illustrate how to use the header and power headroom control unit to indicate the transmission format of the power headroom related information. The method further includes a step 203, the user terminal device transmitting a data packet to the network device on one of the plurality of component carriers, the resource-13-201210358 packet including a header and at least one power headroom control unit . A component carrier can report only the power headroom of its own channel and can also report the power headroom of the channel of one or more other component carriers. Since the partial bit information in the header and/or power headroom control unit indicates the transmission format of the power headroom related information, that is, how to transmit the channel power headroom related information of at least one component carrier on one component carrier When the user terminal device may transmit the channel power margin of the at least one component carrier on one component carrier in multiple manners, the network device may determine the transmission format of the channel power margin of the at least one component carrier, thereby being correct The channel power headroom of the at least one component carrier is received and determined. Therefore, the user terminal device can report the channel power margin of the plurality of component carriers to the network device in a plurality of manners, thereby implementing power headroom reporting of the user terminal device in the communication network using the carrier aggregation technology. The header and the at least one power headroom control unit can indicate the transmission format of the power headroom related information in various ways. A method for reporting the power headroom related information by the user terminal device will be specifically described below through various embodiments. • If only the respective power headroom reports are transmitted on each component carrier, the data channel power headroom and the control channel power headroom of one component carrier may use different headers or share one header, respectively. In one embodiment, the data channel power headroom and the control channel power headroom share a header' and subsequent two power headroom control units. When the physical layer acquires the carrier component as the primary component carrier, the information is transmitted to the MAC layer. The MAC knows that the PDU contains two power headroom control sheets -14-201210358. In one embodiment, the data channel power headroom and the control channel power headroom share a header, and the subheader shown in FIG. 1a can be used as a header and passed through a reserved field (eg, The first r field in Figure la) indicates the data channel power headroom and the control channel power headroom. For example, when the first R field is “0”, the power headroom control unit is a control unit as shown in Figure lb, and only the data channel power headroom is sent: when the first R field is “1” At least one power headroom control unit includes two control units as shown in FIG. 1b. The first control unit transmits a data channel power headroom. The second control unit transmits a control channel power headroom. Similarly, the reserved field (ie, the R field) in the control unit shown in FIG. 1b can also be used to indicate the data channel power headroom and the transmission format of the control channel power headroom, that is, the indication header. The number of channels corresponding to the corresponding power headroom control unit. Similarly, the reserved index in the logical channel identifier field shown in Figure 2 can also be used to indicate that at least one power headroom control unit includes the two control units shown in Figure lb. In still another embodiment, the data channel power margin and the control channel power headroom of one component carrier use respective headers, and the subheader shown in Figure ia can be used as the header. When the second R field is "〇,", the power headroom control unit is a control unit as shown in FIG. 1b, and only the data channel power headroom is transmitted; when the second R field is "〗, At the same time, the power headroom control unit is a control unit as shown in FIG. 1b, and only transmits the control channel power headroom. Similarly, the reserved index in the logical channel identifier field shown in FIG. 13 can also be used to indicate the data channel power headroom and the control channel power amount -15 - 201210358, the transmission format, that is, the indication header The channel type corresponding to the corresponding power headroom control unit. In the above embodiment, the information included in the header to indicate at least one bit of the first transmission format is a reserved field and a logical channel identification code field, respectively. The above embodiment utilizes the existing sub-headers and control units in LTE, and the changes to the existing system are small, and a smooth transition of the system can be realized. • If a power headroom report for at least one component carrier other than itself can be transmitted on one component carrier, the power headroom reports for different component carriers can use different headers or share a single header, respectively. Figures 3a through 3c are schematic illustrations of a header and power headroom control unit, respectively, in accordance with one embodiment of the present invention. It is assumed that the transmission channel of the user terminal device uses five component carriers, one of which is a primary component carrier with a control channel and a data channel, and the other component carriers are secondary component carriers with only a data channel ( Secondary Component Carrier ). Figure 3a shows the sub-header used in LTE to identify the MAC SDU (Service Data Unit), where the F field indicates the size of the L field and the L field indicates the size of the s D U. The sub-header shown in FIG. 3a can be used as a header to indicate the first transmission format, and the LCID field in FIG. 3a is used to indicate that the power headroom corresponding to the header can include at most six channel powers. For the margin, the L field is used to indicate the length of the power headroom control unit, that is, the number of bits or the number of bytes. Figures 3b and 3c show the power headroom control unit reporting six channel power headrooms on one component carrier. The six B fields are used to indicate the second transmission format, corresponding to six channels (ie, data channels on five component carriers and control channels on one main-16-201210358 component carrier), and "1" indicates There is a power headroom report for the corresponding channel, and “0” indicates that there is no power headroom report for the corresponding channel. The P block is a padding field for ensuring that the number of bits included in the power headroom control unit is an integer multiple of 8, so that the data unit is formed in the form of a byte. Figure 3b shows the power headroom control unit reporting six channel power headrooms. Figure 3c shows the power headroom control unit reporting the five channel power headroom. 4a and 4b are schematic views of a header and power headroom control unit, respectively, in accordance with yet another embodiment of the present invention. In the header shown in Fig. 4a, the B field is included, and in the power headroom control unit shown in Fig. 4b, the B field is also included. The B field in the header and the b field in the power headroom control unit are used together to indicate the transmission mode of the power headroom report of the six channels, and “1” indicates that there is a power headroom report in the corresponding channel, “〇 , ' indicates that there is no power headroom report for the corresponding channel. The header and power headroom control unit shown in Figures 4a and 4b reports six channel power headrooms. In yet another embodiment, 'if one component The power headroom report of transmitting another component carrier on the carrier may use the sub-header shown in FIG. 1 as the header 'using the control unit of FIG. 1 b as the power headroom control unit. If there are six component carriers in total Channel, select three R fields in the four R fields in Figure la and Figure lb to index the power headroom of the component carrier channel to be transmitted. 'such as '001' indicates the power of the control channel of the primary component carrier. The volume report uses the LCID field in Figure la to indicate that only the power headroom of one component carrier channel is reported. In yet another embodiment, 'the LCID field in Figure la is used to index the component to be sent by •17- 201210358. Carrier Figure 5 is a flow chart of a method for determining power headroom related information of a user terminal device in a network device in accordance with an embodiment of the present invention. An implementation of the second aspect of the present invention For example, a method for determining power headroom related information of a user terminal device in a network device is provided. The transmission channel of the user terminal device is configured with a plurality of component carriers. The power headroom related information indicates the user terminal device. Channel power margin for at least one of the plurality of component carriers. Referring to Figure 5, the method includes the step 510 of the network device receiving a data packet from the user terminal device, the data packet including a header and at least one power a margin control unit. The at least one power headroom control unit includes the power headroom related information. The header includes at least one of a first transmission format to indicate power headroom related information in at least one power headroom control unit. Information of the bit and/or at least one power headroom control unit includes means for indicating the power headroom Information relating to at least one bit of the second transmission format in the at least one power headroom control unit. The method further comprising the step 520 of determining, by the network device, the power head based on the header and the at least one power headroom control unit The method for obtaining information about the power headroom of the network device corresponds to the foregoing embodiments in which the user terminal device reports the power headroom related information, and details are not described herein. FIG. 6 is an implementation according to the present invention. An example of a reporting device for reporting power headroom related information to a network device in a user terminal device is -18-201210358. In accordance with an embodiment of the third aspect of the present invention, there is provided a user A reporting device for reporting power headroom related information to a network device in a terminal device. The transmission channel of the user terminal device is provided with a plurality of component carriers. The power headroom related information indicates a channel power headroom of the at least one component carrier of the plurality of component carriers of the user equipment. Referring to Figure 6, the reporting device 600 includes a first device 610, a second device 62 0, and a third device 630. The first device 610 is configured to obtain power head related information. The second device 620 is configured to determine a header and at least one power headroom control unit based on the power headroom related information. At least one power headroom control unit includes power headroom related information, the header including information indicating at least one bit of the first transmission format of the power headroom related information in the at least one power headroom control unit and/or The at least one power headroom control unit includes information indicating at least one bit of the second transmission format of the power headroom related information in the at least one power headroom control unit. The third device 630 is configured to send a data packet to the network device on one of the plurality of component carriers, the data packet including a header and at least one power headroom control unit. The functions implemented by the first device 610, the second device 620, and the third device 630 in the reporting device 600 correspond to the foregoing embodiments in which the user terminal device reports the power headroom related information, and details are not described herein. FIG. 7 is a schematic diagram of an apparatus for acquiring power headroom related information of a user equipment of -19-201210358 in a network device according to an embodiment of the present invention. According to an embodiment of the fourth aspect of the present invention, there is provided an apparatus for acquiring power head related information of a user terminal device in a network device. The transmission channel of the user terminal device is provided with a plurality of component carriers. The power head related information indicates a channel power margin of the at least one component carrier of the user terminal equipment in the plurality of component carriers. Referring to Figure 7, the acquisition device 700 includes a fourth device 710 and a fifth device 720. The fourth device 710 is configured to receive a data packet from the user terminal device, the data packet including a header and at least one power headroom control unit. The at least one power headroom control unit includes the power headroom related information, the header including information indicating at least one bit of the first transmission format of the power headroom related information in the at least one power headroom control unit And/or at least one power headroom control unit includes information indicating at least one bit of the second transmission format of the power headroom related information in the at least one power headroom control unit. The fifth device 720 is configured to determine power head related information based on the header and at least one power headroom control unit. The method for the fourth device 710 and the fifth device 720 in the obtaining device 700 to obtain the channel power headroom information corresponds to the foregoing embodiments in which the user terminal device reports the power headroom related information, and details are not described herein again. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit of the invention or the basic features of the invention. invention. Therefore, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the invention is defined by the scope of the appended claims rather All changes that come within the meaning and range of equivalents of the scope of the claims are included in the invention. Any reference signs in the scope of the patent application should not be construed as limiting the scope of the patent application. In addition, it is to be understood that the term "comprising" does not exclude other elements or steps. Multiple devices as stated in the system request can also be implemented by a device via software or hardware. First, the second word is used to denote the name and does not represent any particular order. BRIEF DESCRIPTION OF THE DRAWINGS The above and other features, objects, and advantages of the present invention will become more apparent from the detailed description of the appended claims appended claims FIG. 2 is a schematic diagram of a MAC PDU subheader and a power headroom MAC control unit for reporting a power headroom in an LTE system; FIG. 2 is a diagram for using a power headroom related information in a user equipment device according to an embodiment of the present invention; Flowchart of a method of reporting to a network device. FIG. 3 a to FIG. 3 c are schematic diagrams of a header and a power headroom control unit, respectively, according to an embodiment of the present invention; FIGS. 4a and 4b are respectively according to the present invention. A schematic diagram of a header and power headroom control unit of an embodiment; 21 - 201210358 FIG. 5 is a method for determining power headroom related information of a user terminal device in a network device according to an embodiment of the present invention. FIG. 6 is a schematic diagram of a reporting device for reporting power headroom related information to a network device in a user terminal device according to an embodiment of the present invention; and FIG. Acquisition means acquiring a schematic view of a user terminal device in the network information about equipment power headroom in accordance with one embodiment of the present invention. The same or similar reference numerals in the drawings represent the same or similar components. [Main component symbol description] 6〇〇: Reporting device 610: First device 620: Second device 63 0: Third device 7〇〇: Acquisition device 710: Fourth device 720: Fifth device -22-