TWI833243B - Beam tracking method for mmwave communication, electronic device and computer readable storage medium - Google Patents
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Abstract
Description
本發明係有關於網路連線方法,且特別有關於一種毫米波通訊的波束追蹤方法及電子裝置。 The present invention relates to a network connection method, and in particular to a beam tracking method and electronic device for millimeter wave communication.
隨著各種多媒體應用在行動平台的普及,用戶對於通信頻寬的需求也越來越大,其中利用毫米波頻段增加頻寬是提升傳輸效率和資料容量最直接有效的方式。雖然高頻率的毫米波能提供很大的可用頻寬,但其頻段的電波所遇到的傳播與穿透損耗也很高,會有很嚴重的能量損耗。因此,需要藉由天線陣列設計波束成形技術以提升天線增益來實現長距離通信。 With the popularity of various multimedia applications on mobile platforms, users' demand for communication bandwidth is also increasing. Using millimeter wave bands to increase bandwidth is the most direct and effective way to improve transmission efficiency and data capacity. Although high-frequency millimeter waves can provide a large usable bandwidth, the propagation and penetration losses encountered by radio waves in their frequency bands are also very high, resulting in serious energy losses. Therefore, beamforming technology needs to be designed through the antenna array to increase the antenna gain to achieve long-distance communication.
然而,因為天線陣列所形成的波束具有指向性,在行動通訊終端會移動的情況下,會導致彼此的波束未對準而有顯著的訊號下降。如何使毫米波波束能夠隨著用戶的移動而調整,以便保持良好通訊品質,需要透過不同種波束追蹤演算法來達成。 However, because the beams formed by the antenna array are directional, when the mobile communication terminal moves, the beams of each other will be misaligned, resulting in significant signal degradation. How to enable millimeter wave beams to adjust as users move in order to maintain good communication quality requires different beam tracking algorithms.
若要在毫米波上實施角度估測演算法做波束追蹤,其天線模組中須有大量的射頻訊號鏈來連接陣列中的每支天線,訊號鏈上還會包含資料轉換 器、濾波器、功率放大器等零件,進而導致毫米波射頻的體積、發熱及成本顯著增加。 To implement angle estimation algorithms for beam tracking at millimeter waves, the antenna module must have a large number of radio frequency signal chains to connect each antenna in the array, and the signal chain will also include data conversion components such as converters, filters, and power amplifiers, which in turn leads to a significant increase in the size, heat, and cost of millimeter-wave RF.
商轉系統在基於上述考慮下,多半會先設定多組固定角度的波束,並在通訊時採用快速切換波束組的方式來做波束掃描與波束追蹤。然而,在沒有實作角度估測演算法的情況下,基地台和使用者之間的通訊會有波束不對準的問題,尤其基地台的波束精細度越高此種狀況就越明顯。 Based on the above considerations, most commercial systems will first set up multiple sets of beams with fixed angles, and use rapid switching of beam sets to perform beam scanning and beam tracking during communication. However, without implementing the angle estimation algorithm, there will be a problem of beam misalignment in the communication between the base station and the user, especially the higher the beam precision of the base station, the more obvious this situation will be.
有鑑於此,本發明提供了一種毫米波通訊的波束追蹤方法、電子裝置及電腦可讀儲存媒體,利用6G赫茲以下(sub-6GHz)跟毫米波陣列天線的空間相關性,在低頻帶實作到達角度測距(Angle-of-Arrival,AOA)估測演算法以估測波束指向的角度,並將估測的角度傳送給毫米波主動式天線以產生指向使用者的波束,並可同時追蹤多個用戶。 In view of this, the present invention provides a beam tracking method, electronic device and computer-readable storage medium for millimeter wave communication, which utilizes the spatial correlation between sub-6GHz and millimeter wave array antennas to implement in low frequency bands. Angle-of-Arrival (AOA) estimation algorithm estimates the angle at which the beam points, and transmits the estimated angle to the millimeter-wave active antenna to generate a beam directed at the user and track it simultaneously Multiple users.
本發明第一實施例提供一種毫米波通訊的波束追蹤方法,應用於電子裝置中,包括下列步驟:通過一低頻帶對所有使用者設備執行角度估測演算法,以估測出該些使用者設備相對於該電子裝置的波束角度;根據該些估測出來的波束角度產生該些使用者設備相對於該電子裝置的高頻帶波束;及根據該些產生的高頻帶波束使得該電子裝置與該些使用者設備進行通訊操作。 A first embodiment of the present invention provides a beam tracking method for millimeter wave communication, which is applied to electronic devices and includes the following steps: executing an angle estimation algorithm on all user equipment through a low frequency band to estimate the users. The beam angle of the equipment relative to the electronic device; generating the high-frequency band beams of the user equipment relative to the electronic device based on the estimated beam angles; and based on the generated high-frequency band beams, the electronic device is connected to the electronic device. perform communication operations on some user equipment.
本發明實施例還提供一種電子裝置,包括一低頻運算模組、一高頻運算模組與一通訊模組。該低頻運算模組用於通過一低頻帶對所有使用者設備執行角度估測演算法,以估測出該些使用者設備相對於該電子裝置的波束角度。該高頻運算模組用於根據該些估測出來的波束角度產生該些使用者設備相 對於該電子裝置的高頻帶波束。該通訊模組用於根據該些產生的高頻帶波束使得該電子裝置與該些使用者設備進行通訊操作。 An embodiment of the present invention also provides an electronic device, including a low-frequency computing module, a high-frequency computing module and a communication module. The low-frequency computing module is used to execute an angle estimation algorithm on all user equipment through a low-frequency band to estimate beam angles of the user equipment relative to the electronic device. The high-frequency computing module is used to generate the user equipment phases based on the estimated beam angles. High frequency band beam for this electronic device. The communication module is used to enable the electronic device to perform communication operations with the user equipment based on the generated high-frequency band beams.
本發明實施例還提供一種電腦可讀儲存媒體,該電腦可讀儲存媒體上儲存有電腦程式,該電腦程式被執行時實現如前述的毫米波通訊的波束追蹤方法的步驟。 Embodiments of the present invention also provide a computer-readable storage medium. The computer-readable storage medium stores a computer program. When the computer program is executed, the steps of the beam tracking method for millimeter wave communication are implemented as mentioned above.
以下結合附圖和具體實施例對本發明進行詳細描述,但不作為對本發明的限定。 The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the invention.
200:電子裝置 200:Electronic devices
210:處理器 210: Processor
220:記憶體 220:Memory
230:毫米波通訊的波束追蹤系統 230: Beam tracking system for millimeter wave communications
310:低頻運算模組 310: Low frequency computing module
320:高頻運算模組 320: High frequency computing module
330:通訊模組 330: Communication module
340:資料傳輸模組 340: Data transmission module
350:波束追蹤模組 350: Beam tracking module
圖1本發明第一實施例的毫米波通訊的波束追蹤的應用環境示意圖。 Figure 1 is a schematic diagram of the application environment of beam tracking for millimeter wave communication according to the first embodiment of the present invention.
圖2是本發明第二實施例的毫米波通訊的波束追蹤方法的步驟流程圖。 Figure 2 is a step flow chart of a beam tracking method for millimeter wave communication according to the second embodiment of the present invention.
圖3是本發明實施例的電子裝置的硬體架構示意圖。 FIG. 3 is a schematic diagram of the hardware architecture of an electronic device according to an embodiment of the present invention.
圖4是本發明第一實施例的電子裝置的功能方塊圖。 FIG. 4 is a functional block diagram of the electronic device according to the first embodiment of the present invention.
圖5是本發明第二實施例的電子裝置的功能方塊圖。 FIG. 5 is a functional block diagram of the electronic device according to the second embodiment of the present invention.
為了能夠更清楚地理解本發明的上述目的、特徵和優點,下面結合附圖和具體實施例對本發明進行詳細描述。需要說明的是,在不衝突的情況下,本申請的實施例及實施例中的特徵可以相互組合。 In order to understand the above objects, features and advantages of the present invention more clearly, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, as long as there is no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.
在下面的描述中闡述了很多具體細節以便於充分理解本發明,所描述的實施例僅僅是本發明一部分實施例,而不是全部的實施例。基於本發明 中的實施例,本領域普通技術人員在沒有做出創造性勞動前提下所獲得的所有其他實施例,都屬於本發明保護的範圍。 Many specific details are set forth in the following description in order to fully understand the present invention. The described embodiments are only some, but not all, of the embodiments of the present invention. Based on the present invention All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.
除非另有定義,本文所使用的所有的技術和科學術語與屬於本發明的技術領域的技術人員通常理解的含義相同。本文中在本發明的說明書中所使用的術語只是為了描述具體的實施例的目的,不是旨在於限制本發明。 Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the invention belongs. The terminology used herein in the description of the invention is for the purpose of describing specific embodiments only and is not intended to limit the invention.
需要說明的是,在本發明中涉及“第一”、“第二”等的描述僅用於描述目的,而不能理解為指示或暗示其相對重要性或者隱含指明所指示的技術特徵的數量。由此,限定有“第一”、“第二”的特徵可以明示或者隱含地包括至少一個該特徵。另外,各個實施例之間的技術方案可以相互結合,但是必須是以本領域普通技術人員能夠實現為基礎,當技術方案的結合出現相互矛盾或無法實現時應當認為這種技術方案的結合不存在,也不在本發明要求的保護範圍之內。 It should be noted that descriptions involving “first”, “second”, etc. in the present invention are for descriptive purposes only and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. . Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the technical solutions in various embodiments can be combined with each other, but it must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that such a combination of technical solutions does not exist. , nor within the protection scope required by the present invention.
毫米波(mmWave)頻帶與一般6G赫茲以下(sub-6GHz)頻帶的物理性質有很大的不同。先前研究已指出在兩者空間相關性一致的情況下,可以從sub-6GHz頻帶的通道係數推導出mmWave頻帶的通道相關參數,表示可以用現有在sub-6GHz頻帶執行常見的角度估測(AOA)演算法,並將估測出來的角度提供給高頻mmWave系統當作參考資訊來調整mmWave波束的角度,以得到更精確的用戶方向。 The physical properties of the millimeter wave (mmWave) frequency band are very different from the general sub-6GHz (sub-6GHz) frequency band. Previous research has pointed out that when the spatial correlation between the two is consistent, the channel-related parameters of the mmWave band can be derived from the channel coefficients of the sub-6GHz band, indicating that the existing common angle estimation (AOA) in the sub-6GHz band can be used ) algorithm, and provides the estimated angle to the high-frequency mmWave system as reference information to adjust the angle of the mmWave beam to obtain a more accurate user direction.
圖1是本發明第一實施例的毫米波通訊的波束追蹤方法的步驟流程圖,應用於電子裝置中,該電子裝置為基地台。根據不同的需求,該流程圖中步驟的順序可以改變,某些步驟可以省略。 FIG. 1 is a step flow chart of a beam tracking method for millimeter wave communication according to the first embodiment of the present invention, which is applied to an electronic device, and the electronic device is a base station. Depending on different needs, the order of steps in this flowchart can be changed and some steps can be omitted.
步驟S11,通過低頻帶(例如,sub-6GHz)對所有使用者設備(User Equipment,UE)執行角度估測(AOA)演算法,以估測出該些UE相對於基地台的波束角度。 Step S11: Execute an angle estimation (AOA) algorithm on all user equipment (UE) through a low frequency band (eg, sub-6GHz) to estimate the beam angles of these UEs relative to the base station.
步驟S12,根據估測出來的波束角度產生該些UE相對於該基地台的高頻帶(例如,mmWave)波束。 Step S12: Generate high-frequency band (for example, mmWave) beams of the UEs relative to the base station according to the estimated beam angles.
在本發明實施例中,在每一個UE回傳給該基地台的封包中包含一個使用者自訂欄位,該使用者自訂欄位儲存Active_BeamTracking參數。當Active_BeamTracking=1,則該基地台對該UE進行波束追蹤。 In this embodiment of the present invention, each packet returned by the UE to the base station includes a user-defined field, and the user-defined field stores the Active_BeamTracking parameter. When Active_BeamTracking=1, the base station performs beam tracking on the UE.
步驟S13,根據該產生的mmWave波束使得該基地台與該些UE進行通訊操作。 Step S13, causing the base station to perform communication operations with the UEs based on the generated mmWave beam.
需注意到,上述步驟11-S13為使用者設備的初始化階段。 It should be noted that the above steps 11-S13 are the initialization stage of the user equipment.
圖2是本發明第二實施例的毫米波通訊的波束追蹤方法的步驟流程圖,應用於電子裝置中,該電子裝置為基地台。根據不同的需求,該流程圖中步驟的順序可以改變,某些步驟可以省略。 FIG. 2 is a step flow chart of a beam tracking method for millimeter wave communication according to the second embodiment of the present invention, which is applied to an electronic device, and the electronic device is a base station. Depending on different needs, the order of steps in this flowchart can be changed and some steps can be omitted.
步驟S21,對該基地台與訊號範圍內的所有UE執行步驟S11~S13,以根據產生的mmWave波束使得該基地台與該些UE進行通訊操作。 Step S21: Perform steps S11 to S13 on the base station and all UEs within the signal range, so as to enable the base station to perform communication operations with the UEs based on the generated mmWave beams.
步驟S22,該基地台與該些UE進行資料傳輸。 Step S22: The base station performs data transmission with the UEs.
步驟S23,當其中一個UE(例如,第一UE)移動時,判斷是否對該第一UE進行波束追蹤。若不要對該第一UE進行波束追蹤,則回到步驟S22,該基地台與該第一UE繼續進行資料傳輸。 Step S23: When one of the UEs (for example, the first UE) moves, determine whether to perform beam tracking on the first UE. If it is not necessary to perform beam tracking on the first UE, then return to step S22, and the base station and the first UE continue to transmit data.
在本發明實施例中,在該第一UE回傳給該基地台的封包中包含一個使用者自訂欄位,該使用者自訂欄位儲存Active_BeamTracking參數。當Active_BeamTracking=1,則波束追蹤模組350對該第一UE進行波束追蹤。
In this embodiment of the present invention, the packet returned by the first UE to the base station includes a user-defined field, and the user-defined field stores the Active_BeamTracking parameter. When Active_BeamTracking=1, the
步驟S24,若要對該第一UE進行波束追蹤,此時,Active_BeamTracking=1,對該第一UE執行步驟S11~S13,以根據產生的mmWave波束使得通訊模組330與該第一UE進行通訊操作。
Step S24: If you want to perform beam tracking on the first UE, at this time, Active_BeamTracking=1, perform steps S11 to S13 on the first UE to enable the
圖3係顯示本發明實施例的行動電子裝置的硬體架構示意圖。電子裝置200,但不僅限於,可通過系統匯流排相互通信連接處理器210、記憶體220以及毫米波通訊的波束追蹤系統230,圖3僅示出了具有元件210-230的電子裝置200,但是應理解的是,並不要求實施所有示出的元件,可以替代的實施更多或者更少的元件。
FIG. 3 is a schematic diagram showing the hardware architecture of a mobile electronic device according to an embodiment of the present invention. The
該記憶體220至少包括一種類型的可讀儲存媒體,該可讀儲存媒體包括快閃記憶體、硬碟、多媒體卡、卡型記憶體(例如,SD或DX記憶體等)、隨機訪問記憶體(RAM)、靜態隨機訪問記憶體(SRAM)、唯讀記憶體(ROM)、電可擦除可程式設計唯讀記憶體(EEPROM)、可程式設計唯讀記憶體(PROM)、磁性記憶體、磁片、光碟等。在一些實施例中,該記憶體220可以是該電子裝置10的內部存儲單元,例如電子裝置200的硬碟或記憶體。在另一些實施例中,該記憶體也可以是該電子裝置200的外部存放裝置,例如該電子裝置200上配備的插接式硬碟,智慧存儲卡(Smart Media Card,SMC),安全數位(Secure Digital,SD)卡,快閃記憶體卡(Flash Card)等。當然,該記憶體220還可以既包括該電子裝置200的內部存儲單元也包括其外部存放裝置。本實施例中,該記憶體220通常用於存儲安裝於該電子裝置200的作業系統和各類應用軟體,例如毫米波通訊的波束追蹤系統230的程式碼等。此外,該記憶體220還可以用於暫時地存儲已經輸出或者將要輸出的各類資料。
The
該處理器210在一些實施例中可以是中央處理器(Central Processing Unit,CPU)、控制器、微控制器、微處理器、或其他資料處理晶片。該處理器
210通常用於控制該電子裝置200的總體操作。本實施例中,該處理器210用於運行該記憶體220中存儲的程式碼或者處理資料,例如,運行該毫米波通訊的波束追蹤系統230等。
In some embodiments, the
需要說明的是,圖3僅為舉例說明電子裝置200。在其他實施例中,電子裝置200也可以包括更多或者更少的元件,或者具有不同的元件配置。
It should be noted that FIG. 3 only illustrates the
該電子裝置200集成的模組/單元如果以軟體功能單元的形式實現並作為獨立的產品銷售或使用時,可以存儲在一個電腦可讀取儲存媒體中。基於這樣的理解,本發明實現上述實施例方法中的全部或部分流程,也可以通過電腦程式來指令相關的硬體來完成,該的電腦程式可存儲於一電腦可讀儲存媒體中,該電腦程式在被處理器執行時,可實現上述各個方法實施例的步驟。其中,該電腦程式包括電腦程式代碼,該電腦程式代碼可以為原始程式碼形式、物件代碼形式、可執行檔或某些中間形式等。該電腦可讀介質可以包括:能夠攜帶該電腦程式代碼的任何實體或裝置、記錄介質、U盤、移動硬碟、磁片、光碟、電腦記憶體、唯讀記憶體、隨機存取記憶體、電載波訊號、電信訊號以及軟體分發介質等。需要說明的是,該電腦可讀介質包含的內容可以根據司法管轄區內立法和專利實踐的要求進行適當的增減,例如在某些司法管轄區,根據立法和專利實踐,電腦可讀介質不包括電載波訊號和電信訊號。
If the integrated modules/units of the
圖4係顯示本發明第一實施例的電子裝置的功能方塊圖,其用於執行毫米波通訊的波束追蹤方法。本發明實施例的毫米波通訊的波束追蹤方法可由儲存媒體中的電腦程式來實現,例如,電子裝置200中的記憶體220。當實現本發明方法的電腦程式由處理器210載入到記憶體220時,驅動電子裝置200的處理器210執行本發明實施例的毫米波通訊的波束追蹤方法。
FIG. 4 shows a functional block diagram of an electronic device according to a first embodiment of the present invention, which is used to perform a beam tracking method for millimeter wave communication. The beam tracking method for millimeter wave communication according to the embodiment of the present invention can be implemented by a computer program in a storage medium, such as the
本發明實施例的電子裝置200包括低頻運算模組310、高頻運算模組320與通訊模組330。
The
低頻運算模組310通過低頻帶(例如,sub-6GHz)對所有UE執行角度估測(AOA)演算法,以估測出該些UE相對於基地台的波束角度。
The low-
高頻運算模組320根據估測出來的波束角度產生該些UE相對於該基地台的高頻帶(例如,mmWave)波束。
The high-
在本發明實施例中,在每一個UE回傳給該基地台的封包中包含一個使用者自訂欄位,該使用者自訂欄位儲存Active_BeamTracking參數。當Active_BeamTracking=1,則該基地台對該UE進行波束追蹤。 In this embodiment of the present invention, each packet returned by the UE to the base station includes a user-defined field, and the user-defined field stores the Active_BeamTracking parameter. When Active_BeamTracking=1, the base station performs beam tracking on the UE.
通訊模組330根據該產生的mmWave波束使得該基地台與該些UE進行通訊操作。
The
圖5係顯示本發明第二實施例的電子裝置的功能方塊圖,其用於執行毫米波通訊的波束追蹤方法。本發明實施例的毫米波通訊的波束追蹤方法可由儲存媒體中的電腦程式來實現,例如,電子裝置200中的記憶體220。當實現本發明方法的電腦程式由處理器210載入到記憶體220時,驅動電子裝置200的處理器210執行本發明實施例的毫米波通訊的波束追蹤方法。
FIG. 5 shows a functional block diagram of an electronic device according to a second embodiment of the present invention, which is used to perform a beam tracking method for millimeter wave communication. The beam tracking method for millimeter wave communication according to the embodiment of the present invention can be implemented by a computer program in a storage medium, such as the
本發明實施例的電子裝置200包括低頻運算模組310、高頻運算模組320、通訊模組330、資料傳輸模組340與波束追蹤模組350。
The
低頻運算模組310通過低頻帶(例如,sub-6GHz)對所有UE執行角度估測(AOA)演算法,以估測出該些UE相對於基地台的波束角度。
The low-
高頻運算模組320根據估測出來的波束角度產生該些UE相對於該基地台的高頻帶(例如,mmWave)波束。
The high-
在本發明實施例中,在每一個UE回傳給該基地台的封包中包含一個使用者自訂欄位,該使用者自訂欄位儲存Active_BeamTracking參數。當Active_BeamTracking=1,則該基地台對該UE進行波束追蹤。 In this embodiment of the present invention, each packet returned by the UE to the base station includes a user-defined field, and the user-defined field stores the Active_BeamTracking parameter. When Active_BeamTracking=1, the base station performs beam tracking on the UE.
通訊模組330根據該產生的mmWave波束使得該基地台與該些UE進行通訊操作。
The
資料傳輸模組340與該些UE進行資料傳輸。
The
當其中一個UE(例如,第一UE)移動時,波束追蹤模組350判斷是否對該第一UE進行波束追蹤。若不要對該第一UE進行波束追蹤,則資料傳輸模組340與該第一UE繼續進行資料傳輸。
When one of the UEs (eg, the first UE) moves, the
在本發明實施例中,在該第一UE回傳給該基地台的封包中包含一個使用者自訂欄位,該使用者自訂欄位儲存Active_BeamTracking參數。當Active_BeamTracking=1,則波束追蹤模組350對該第一UE進行波束追蹤。
In this embodiment of the present invention, the packet returned by the first UE to the base station includes a user-defined field, and the user-defined field stores the Active_BeamTracking parameter. When Active_BeamTracking=1, the
若要對該第一UE進行波束追蹤,此時,Active_BeamTracking=1,低頻運算模組310、高頻運算模組320與通訊模組330對該第一UE重複執行前述步驟,以根據產生的mmWave波束使得通訊模組330與該第一UE進行通訊操作。
To perform beam tracking on the first UE, at this time, Active_BeamTracking=1, the low-
可以理解的是,以上所描述的模組劃分,僅僅為一種邏輯功能劃分,實際實現時可以有另外的劃分方式。另外,在本申請各個實施例中的各功能模組可以集成在相同處理單元中,也可以是各個模組單獨物理存在,也可以兩個或兩個以上模組集成在相同單元中。上述集成的模組既可以採用硬體的形式實現,也可以採用硬體加軟體功能模組的形式實現。 It can be understood that the module division described above is only a logical function division, and there may be other division methods in actual implementation. In addition, each functional module in each embodiment of the present application can be integrated in the same processing unit, or each module can exist physically alone, or two or more modules can be integrated in the same unit. The above integrated modules can be implemented in the form of hardware or in the form of hardware plus software function modules.
以上實施例僅用以說明本發明的技術方案而非限制,儘管參照實施例對本發明進行了詳細的說明,本領域的普通技術人員應該理解,可以對本發明的技術方案進行修改或等同替換,而不脫離本發明技術方案的精神和範圍。 The above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently substituted. without departing from the spirit and scope of the technical solution of the present invention.
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US20160020876A1 (en) * | 2014-07-16 | 2016-01-21 | Qualcomm Incorporated | Low-frequency assisted methods for beamforming, timing and frequency offset in mm-wave access systems |
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US20210028850A1 (en) * | 2018-06-29 | 2021-01-28 | Intel Corporation | Millimeter wave beam tracking and beam sweeping |
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US20160020876A1 (en) * | 2014-07-16 | 2016-01-21 | Qualcomm Incorporated | Low-frequency assisted methods for beamforming, timing and frequency offset in mm-wave access systems |
US20210028850A1 (en) * | 2018-06-29 | 2021-01-28 | Intel Corporation | Millimeter wave beam tracking and beam sweeping |
US20200304198A1 (en) * | 2018-12-28 | 2020-09-24 | Intel Corporation | Beam tracking for 5g millimeter-wave systems |
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