TWI566559B - Unlicensed spectrum sharing method, base station using the same, and user equipment using the same - Google Patents
Unlicensed spectrum sharing method, base station using the same, and user equipment using the same Download PDFInfo
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Description
本申請案為2014年5月15日申請的第14/277,813號美國申請案，其為在先申請案的部分繼續申請案，且主張所述在先申請案的優先權權益。第14/277,813號在先申請案主張2013年10月22日申請的第61/894,138號美國臨時申請案、2013年11月11日申請的第61/902,298號美國臨時申請案、2013年12月31日申請的第61/922,102號美國臨時申請案及2013年12月31日申請的第61/922,105號美國臨時申請案的優先權權益。本申請案還主張2014年6月13日申請的第62/011,579號美國臨時申請案的優先權權益。本申請案還主張2015年5月11日申請的第14/708,296號美國申請案的優先權權益。上文所提到的專利申請案中的每一者的全部內容特此以引用的方式併入本文中，並且成為本說明書的一部分。 This application is a U.S. Application Serial No. 14/277,813, filed on May 15, 2014, which is hereby incorporated by reference in its entirety in its entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire all U.S. Provisional Application No. 61/894, 138, filed on October 22, 2013, and U.S. Provisional Application No. 61/902,298, filed on November 11, 2013, December 2013 Priority interest in U.S. Provisional Application No. 61/922,102, filed on Sep. 31, and U.S. Provisional Application No. 61/922,105, filed on Dec. 31, 2013. The present application also claims the priority benefit of US Provisional Application No. 62/011,579, filed on Jun. 13, 2014. The present application also claims the priority benefit of US Application No. 14/708,296, filed on May 11, 2015. The entire contents of each of the above-referenced patent applications are hereby incorporated by reference herein in its entirety in its entirety in its entirety herein in its entirety
本發明是針對適用於用戶設備及基站的未授權頻譜共用 方法、使用相同方法的用戶設備及使用相同方法的基站。 The present invention is directed to unlicensed spectrum sharing suitable for user equipment and base stations Method, user equipment using the same method, and base station using the same method.
按照慣例，蜂窩式系統在授權頻譜中操作，其中基站(base station,BS)及一或多個無線裝置可經由授權給無線操作人員的無線頻譜通信。蜂窩式網路通信系統已將其用途擴展到未授權頻譜(unlicensed spectrum)，所述未授權頻譜也被稱作開放式頻譜(open spectrum)或自由頻譜(free spectrum)。未授權頻譜的一些實例為工業、科學及醫療(Industrial,Sicentific,and Medical,ISM)頻段、未授權國家資訊基礎設施(Unlicensed National Information Infrastructure,UNII)頻段、其它未授權或共用頻譜等。不同國家通常可具有不同未授權頻譜，因為每一國家中的法規可能不同於其它國家。LTE的未授權頻譜的潛在用途已聚集了電信設備供應商及運營商的關注。近期關注的原因之一是由於授權頻譜的受限制可用性。為了將高通量服務提供到更多用戶，LTE可依靠利用未授權頻譜來用於通信。 Conventionally, cellular systems operate in a licensed spectrum where a base station (BS) and one or more wireless devices can communicate via wireless spectrum licensed to wireless operators. Cellular network communication systems have extended their use to unlicensed spectrum, also known as open spectrum or free spectrum. Some examples of unlicensed spectrum are Industrial, Scientific and Medical (ISM) bands, Unlicensed National Information Infrastructure (UNII) bands, other unlicensed or shared spectrum. Different countries usually have different unlicensed spectrum because the regulations in each country may differ from those of other countries. The potential use of LTE's unlicensed spectrum has gathered the attention of telecom equipment vendors and operators. One of the reasons for recent attention is due to the limited availability of licensed spectrum. In order to provide high throughput services to more users, LTE can rely on utilizing unlicensed spectrum for communication.
主要挑戰之一為在不確定的環境中操作蜂窩式系統。因為在未授權或共用頻譜的域內進行通信，所以可存在也想要使用未授權或共用頻譜的其它通信裝置。這些通信裝置可屬於相同或不同無線電存取技術。舉例來說，通常在為長期演進(Long term Evolution,LTE)無線通訊系統預留的頻譜內進行的無線通訊操作可能偏好與通常由Wi-Fi無線電使用的自由頻譜中的Wi-Fi無線電 共存。然而，在未授權頻段內，LTE裝置可能不能夠在任何給定時間自由發射或接收，這是由於與頻譜共用相關的限制。此問題在常規蜂窩式LTE系統中將不存在，其中發射及接收操作通常是安排好的，且將不與在自由頻譜中出現的操作衝突。 One of the main challenges is to operate cellular systems in an uncertain environment. Because communication takes place within an unlicensed or shared spectrum domain, there may be other communication devices that also want to use unlicensed or shared spectrum. These communication devices may belong to the same or different radio access technologies. For example, wireless communication operations typically performed within the spectrum reserved for Long Term Evolution (LTE) wireless communication systems may prefer Wi-Fi radios in the free spectrum typically used by Wi-Fi radios. coexist. However, within an unlicensed band, LTE devices may not be able to transmit or receive freely at any given time due to limitations associated with spectrum sharing. This problem will not exist in conventional cellular LTE systems where the transmit and receive operations are typically scheduled and will not conflict with operations occurring in the free spectrum.
為了應對未授權頻譜中的發射及接收機會的不確定性，可設計自由頻譜共用方法以使得通常使用授權頻譜的無線通訊裝置可利用自由頻譜而不與通常使用未授權頻譜的裝置衝突。 In order to cope with the uncertainty of transmission and reception opportunities in the unlicensed spectrum, the free spectrum sharing method can be designed such that wireless communication devices that typically use licensed spectrum can utilize the free spectrum without colliding with devices that typically use unlicensed spectrum.
對於與對未授權頻譜的授權輔助存取相關的一般資訊，標題為“第三代合作夥伴計畫；技術規範組無線電存取網路；對未授權頻譜的授權輔助存取的研究；(版本13)(3rd Generation Partnership Project；Technical Specification Group Radio Access Network；Study on Licensed-Assisted Access to Unlicensed Spectrum；(Release 13))”的日期為2015年2月的技術規範3GPP TR 36.889V0.3.1含有對概念及術語的定義，且特此以引用的方式併入。對於與未授權頻譜中的授權輔助存取或授權輔助載波聚合相關的其它資訊，標題為“對於LAA的場景和需求(Scenarios and Requirements for LAA)”的3GPP TSG RAN WG2 #89 R2-150234還可含有相關概念及術語，且特此以引用的方式併入。 For general information related to authorized access to unlicensed spectrum, titled " 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Research on Authorized Access to Unlicensed Spectrum; (Version 13) (3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Study on Licensed-Assisted Access to Unlicensed Spectrum; (Release 13)) " dated February 2015 technical specification 3GPP TR 36.889V0.3.1 contains the concept And the definition of terms, and are hereby incorporated by reference. For other information related to Authorized Auxiliary Access or Authorized Secondary Carrier Aggregation in Unlicensed Spectrum, 3GPP TSG RAN WG2 #89 R2-150234 entitled " Scenarios and Requirements for LAA " may also be used. Related concepts and terms are included and are hereby incorporated by reference.
因此，本發明是針對適用於用戶設備及基站的未授權頻譜共用方法、使用相同方法的用戶設備及使用相同方法的基站。 Accordingly, the present invention is directed to an unlicensed spectrum sharing method applicable to user equipment and base stations, a user equipment using the same method, and a base station using the same method.
在示範性實施例中的一者中，本發明是針對適用於用戶設備的未授權頻譜共用方法。所述方法將包含：經由授權頻譜中的第一分量載波(first component carrier)接收配置消息以在未授權頻譜中操作，回應於接收到配置消息經由未授權頻譜中的第二分量載波(second component carrier)接收UE的用戶消息，其中第一分量載波及第二分量載波為聚合載波(aggregated carriers)，及經由授權頻譜中的第一分量載波接收重新配置消息以在未授權頻譜中操作。 In one of the exemplary embodiments, the present invention is directed to an unlicensed spectrum sharing method suitable for user equipment. The method will include receiving a configuration message via a first component carrier in a licensed spectrum to operate in an unlicensed spectrum, in response to receiving a configuration message via a second component carrier in an unlicensed spectrum (second component) The carrier receives the user message of the UE, wherein the first component carrier and the second component carrier are aggregated carriers, and the reconfiguration message is received via the first component carrier in the licensed spectrum to operate in the unlicensed spectrum.
在示範性實施例中的一者中，本發明是針對包含接收器及耦合到接收器的處理電路的用戶設備，所述接收器接收無線發射。處理器經配置以用於經由接收器經由授權頻譜中的第一分量載波接收配置消息以在未授權頻譜中操作，回應於接收到配置消息經由接收器經由未授權頻譜中的第二分量載波接收UE的用戶消息，其中第一分量載波及第二分量載波為聚合載波，及經由接收器經由授權頻譜中的第一分量載波接收重新配置消息以在未授權頻譜中操作。 In one of the exemplary embodiments, the present invention is directed to a user equipment comprising a receiver and a processing circuit coupled to the receiver, the receiver receiving wireless transmissions. The processor is configured to receive, via the receiver, a configuration message via the first component carrier in the licensed spectrum to operate in the unlicensed spectrum, in response to receiving the configuration message, to receive via the second component carrier in the unlicensed spectrum via the receiver User message of the UE, wherein the first component carrier and the second component carrier are aggregated carriers, and the reconfiguration message is received via the receiver via the first component carrier in the licensed spectrum to operate in the unlicensed spectrum.
在示範性實施例中的一者中，本發明是針對適用於基站的未授權頻譜共用方法。所述方法將包含：經由授權頻譜中的第一分量載波發射配置消息以在未授權頻譜中操作，回應於接收到配置消息經由未授權頻譜中的第二分量載波發射用戶消息，其中第一分量載波及第二分量載波為聚合載波，及經由授權頻譜中的第一分量載波發射重新配置消息以在未授權頻譜中操作。 In one of the exemplary embodiments, the present invention is directed to an unlicensed spectrum sharing method suitable for use in a base station. The method will include transmitting a configuration message via a first component carrier in a licensed spectrum to operate in an unlicensed spectrum, and transmitting a user message via a second component carrier in an unlicensed spectrum in response to receiving the configuration message, wherein the first component The carrier and the second component carrier are aggregated carriers, and the reconfiguration message is transmitted via the first component carrier in the licensed spectrum to operate in the unlicensed spectrum.
在示範性實施例中的一者中，本發明是針對包含發射器及耦合到發射器的處理電路的基站，所述發射器發射無線發射。處理電路經配置以用於經由發射器經由授權頻譜中的第一分量載波發射啟動消息(activation message)以在未授權頻譜中操作，回應於接收到配置消息經由發射器經由未授權頻譜中的第二分量載波發射用戶消息，其中第一分量載波及第二分量載波為聚合載波，及經由發射器經由授權頻譜中的第一分量載波發射重新配置消息以在未授權頻譜中操作。 In one of the exemplary embodiments, the present invention is directed to a base station comprising a transmitter and a processing circuit coupled to the transmitter, the transmitter transmitting a wireless transmission. The processing circuit is configured to transmit an activation message via the first component carrier in the licensed spectrum via the transmitter to operate in the unlicensed spectrum, in response to receiving the configuration message via the transmitter via the unlicensed spectrum The two component carrier transmits a user message, wherein the first component carrier and the second component carrier are aggregated carriers, and the reconfiguration message is transmitted via the transmitter via the first component carrier in the licensed spectrum to operate in the unlicensed spectrum.
為了使得本發明的前述特徵及優點便於理解，下文將詳細描述帶有附圖的示範性實施例。應理解，前文總體描述以及以下詳細描述都是示範性的，並且是希望提供對所主張的本發明的進一步解釋。 In order to facilitate the understanding of the foregoing features and advantages of the present invention, exemplary embodiments with the accompanying drawings will be described in detail below. It is to be understood that the foregoing general description,
但是，應理解，此概述可以不含有本發明的所有方面和實施例，並且因此不希望以任何方式為限制性的或約束性的。此外，本發明將包含所屬領域的技術人員顯而易見的改進和修改。 However, it should be understood that this summary is not intended to be exhaustive or restrictive. In addition, the present invention will include modifications and alterations obvious to those skilled in the art.
101‧‧‧基站 101‧‧‧ base station
102‧‧‧用戶設備 102‧‧‧User equipment
103‧‧‧核心網路 103‧‧‧core network
141‧‧‧基站 141‧‧‧ base station
142‧‧‧用戶設備 142‧‧‧User equipment
143‧‧‧第二裝置 143‧‧‧second device
301‧‧‧啟動信令消息 301‧‧‧Start signaling message
302‧‧‧延遲時間值 302‧‧‧delay time value
303‧‧‧延遲持續時間 303‧‧‧Delayed duration
401‧‧‧啟動信令消息 401‧‧‧Start signaling message
402‧‧‧啟動持續時間 402‧‧‧Starting duration
501‧‧‧啟動信令消息 501‧‧‧Start signaling message
502‧‧‧啟動開始時間 502‧‧‧Starting start time
503‧‧‧啟動結束時間 503‧‧‧Starting time
601‧‧‧第一啟動信令消息 601‧‧‧First start signaling message
602‧‧‧第二啟動信令消息 602‧‧‧Second start signaling message
603、604‧‧‧子幀 603, 604‧‧‧ subframe
701‧‧‧第一啟動信令消息 701‧‧‧First start signaling message
702‧‧‧第二啟動信令消息 702‧‧‧Second start signaling message
703、704‧‧‧子幀 703, 704‧‧‧ subframe
1001‧‧‧處理電路 1001‧‧‧Processing Circuit
1002‧‧‧類比轉數位(A/D)/數位轉類比(D/A)轉換器 1002‧‧‧ Analog-to-Digital (A/D)/Digital to Analog (D/A) Converter
1003‧‧‧發射器 1003‧‧‧transmitter
1004‧‧‧接收器 1004‧‧‧ Receiver
1005‧‧‧天線單元 1005‧‧‧Antenna unit
1101‧‧‧處理電路 1101‧‧‧Processing circuit
1102‧‧‧類比轉數位(A/D)/數位轉類比(D/A)轉換器 1102‧‧‧ Analog-to-Digital (A/D)/Digital to Analog (D/A) Converter
1103‧‧‧發射器 1103‧‧‧transmitter
1104‧‧‧接收器 1104‧‧‧ Receiver
1105‧‧‧天線單元 1105‧‧‧Antenna unit
fl、f2‧‧‧頻率資訊/頻率 Fl, f2‧‧‧ frequency information / frequency
S101、S102、S121~S126、S201a、S201b、S202~S204、S801~S803、S901~S903‧‧‧步驟 Steps S101, S102, S121~S126, S201a, S201b, S202~S204, S801~S803, S901~S903‧‧
T1‧‧‧開始時間 T1‧‧‧ start time
T2‧‧‧結束時間 End of T2‧‧‧
包含附圖以提供對本發明的進一步理解，且附圖併入本說明書中且構成本說明書的一部分。圖式說明本發明的實施例，並且連同所述描述一起用以解釋本發明的原理 The drawings are included to provide a further understanding of the invention, and are incorporated in this specification and constitute a part of this specification. The drawings illustrate embodiments of the invention and together with the description are used to explain the principles of the invention
圖1A說明在授權頻帶及未授權頻帶兩者中以載波聚合操作的示範性無線通訊系統。 FIG. 1A illustrates an exemplary wireless communication system operating in carrier aggregation in both licensed and unlicensed frequency bands.
圖1B說明配置根據本發明的示範性實施例中的一者的未授權頻譜中的分量載波的子幀或時隙。 1B illustrates a subframe or time slot in which component carriers in an unlicensed spectrum in accordance with one of the exemplary embodiments of the present invention are configured.
圖1C說明將根據本發明的示範性實施例中的一者的未授權頻譜中的分量載波的子幀或時隙設置成休眠。 1C illustrates setting a subframe or time slot of a component carrier in an unlicensed spectrum according to one of the exemplary embodiments of the present invention to sleep.
圖1D說明為了在根據本發明的示範性實施例中的一者的未授權頻譜內操作而在基站與用戶設備之間交換的信令消息。 1D illustrates signaling messages exchanged between a base station and a user equipment for operation within an unlicensed spectrum in accordance with one of the exemplary embodiments of the present invention.
圖1E說明用以操縱根據本發明的示範性實施例中的一者的未授權頻譜中的進行中操作的機制。 FIG. 1E illustrates a mechanism for manipulating an ongoing operation in an unlicensed spectrum in accordance with one of the exemplary embodiments of the present invention.
圖2為說明根據本發明的示範性實施例中的一者的未授權頻譜中的無線通訊的啟動的流程圖。 2 is a flow diagram illustrating the initiation of wireless communication in an unlicensed spectrum of one of the exemplary embodiments of the present invention.
圖3說明根據本發明的示範性實施例中的一者的具有延遲的啟動信令消息。 3 illustrates a start signaling message with delays in accordance with one of the exemplary embodiments of the present invention.
圖4說明根據本發明的示範性實施例中的一者的具有持續時間的啟動信令消息。 4 illustrates a start signaling message with duration in accordance with one of the exemplary embodiments of the present invention.
圖5說明根據本發明的示範性實施例中的一者的具有開始時間及結束時間的啟動信令消息。 FIG. 5 illustrates an initiation signaling message with a start time and an end time in accordance with one of the exemplary embodiments of the present invention.
圖6說明根據本發明的示範性實施例中的一者的具有系統幀號及子幀號的啟動信令消息。 6 illustrates an initiation signaling message with a system frame number and a subframe number in accordance with one of the exemplary embodiments of the present invention.
圖7說明根據本發明的示範性實施例中的一者的未授權頻譜中的多個分量載波的使用。 7 illustrates the use of multiple component carriers in an unlicensed spectrum of one of the exemplary embodiments of the present invention.
圖8說明根據本發明的示範性實施例中的一者的從用戶設備的角度提出的未授權頻譜共用方法的概述。 8 illustrates an overview of an unlicensed spectrum sharing method presented from the perspective of a user equipment in accordance with one of the exemplary embodiments of the present invention.
圖9說明根據本發明的示範性實施例中的一者的從基站的角度提出的未授權頻譜共用方法的概述。 9 illustrates an overview of an unlicensed spectrum sharing method proposed from the perspective of a base station in accordance with one of the exemplary embodiments of the present invention.
圖10說明根據本發明的實施例中的一者的示範性用戶設備。 FIG. 10 illustrates an exemplary user equipment in accordance with one of the embodiments of the present invention.
圖11說明根據本發明的實施例中的一者的示範性基站。 11 illustrates an exemplary base station in accordance with one of the embodiments of the present invention.
現將詳細參考本發明的示範性實施例，其實例在附圖中得以說明。只要可能，相同參考數字在圖式和描述中用以指相同或相似部分。 Reference will now be made in detail to the exemplary embodiments embodiments Whenever possible, the same reference numerals are used in the drawings and the description
在未授權頻段中，通常經配置以在LTE通信系統內操作的裝置可能不能夠在未授權頻譜內自由發射或接收，這是由於與通常經配置以在未授權頻譜內操作的裝置的頻譜共用。舉例來說，如果行動電話想要經由未授權頻譜與基站通信，那麼行動電話可能與已經由相同未授權頻譜建立Wi-Fi連接的另一裝置衝突。因此，為了應對發射及接收機會中的此不確定性，可利用基於載波聚合方案的未授權頻譜共用方法經由不同分量載波進行發射及接收。 In an unlicensed band, devices that are typically configured to operate within an LTE communication system may not be able to freely transmit or receive within the unlicensed spectrum due to spectrum sharing with devices that are typically configured to operate within the unlicensed spectrum. . For example, if a mobile phone wants to communicate with a base station via an unlicensed spectrum, the mobile phone may collide with another device that has established a Wi-Fi connection by the same unlicensed spectrum. Therefore, in order to cope with this uncertainty in the transmission and reception opportunities, the unlicensed spectrum sharing method based on the carrier aggregation scheme can be used to transmit and receive via different component carriers.
因為載波聚合經展示為增加LTE以及下一代寬頻無線通訊中的資料速率的有效方式，所以在未授權頻譜中也可使用載波聚合技術。確切地說，在LTE通信系統的授權頻譜中操作的第一分量載波可結合在未授權頻譜中操作的第二分量載波配置。一個示範性情境為第一分量載波可經實施為LTE通信系統的授權頻譜 中的主分量載波(primary component carrier,PCC)，且第二分量載波可經實施為未授權頻譜中的輔分量載波(secondary component carrier,SCC)。“主服務社區可由授權頻譜中的PCC服務，且輔服務社區可由未授權頻譜中的SCC服務。”在載波聚合方案下，第一分量載波及第二分量載波為聚合載波，且在未授權頻譜的不同無重疊頻率塊上還可存在多個輔分量載波。SCC的配置、啟動及信令機制可不同於PCC，所述PCC可為基於常規機制用信號發出、配置及啟動的常規載波。舉例來說，可在PCC中發射信令消息，所述PCC經操作為LTE通信系統的授權頻譜中的分量載波，而可在未授權頻譜中操作的一或多個SCC中發射一些或所有資料包。 Carrier aggregation techniques can also be used in unlicensed spectrum because carrier aggregation has been shown to be an effective way to increase data rates in LTE and next generation broadband wireless communications. Rather, the first component carrier operating in the licensed spectrum of the LTE communication system can incorporate a second component carrier configuration operating in the unlicensed spectrum. An exemplary scenario is that the first component carrier can be implemented as an authorized spectrum of the LTE communication system A primary component carrier (PCC), and the second component carrier may be implemented as a secondary component carrier (SCC) in the unlicensed spectrum. "The primary service community may be served by the PCC in the licensed spectrum, and the secondary service community may be served by the SCC in the unlicensed spectrum." Under the carrier aggregation scheme, the first component carrier and the second component carrier are aggregated carriers, and the unlicensed spectrum is in the unlicensed spectrum. There may also be multiple secondary component carriers on different non-overlapping frequency blocks. The configuration, initiation, and signaling mechanisms of the SCC may be different from the PCC, which may be a conventional carrier that is signaled, configured, and activated based on conventional mechanisms. For example, a signaling message can be transmitted in the PCC that operates as a component carrier in the licensed spectrum of the LTE communication system, while some or all of the data can be transmitted in one or more SCCs operating in the unlicensed spectrum package.
而且，為了改進未授權頻譜中的操作的無線電資源配置的靈活性，可應用針對可配置分量載波的動態無線電資源配置及啟動機制。動態無線電資源配置及啟動機制為通過例如根據當前未授權頻段使用/干擾條件動態地啟動無線電幀的特定子幀或將其設置成休眠來管理分量載波的技術方案。通過未授權頻譜的分量載波中的一些子幀(或時隙)的動態啟動或休眠設置，可以實現授權頻譜中的常規LTE操作與未授權頻譜中的LTE操作(或其它無線系統操作人員)之間的共存。 Moreover, to improve the flexibility of radio resource configuration for operation in unlicensed spectrum, dynamic radio resource configuration and initiation mechanisms for configurable component carriers can be applied. The dynamic radio resource configuration and initiation mechanism is a technical solution for managing component carriers by, for example, dynamically starting a specific subframe of a radio frame according to a current unlicensed band usage/interference condition or setting it to sleep. Conventional LTE operation in licensed spectrum and LTE operation in unlicensed spectrum (or other wireless system operators) may be implemented by dynamic initiation or sleep setting of some of the component carriers (or time slots) of the unlicensed spectrum. Coexistence between the two.
舉例來說，如果未授權頻譜中的下行鏈路發射由於源自通常在未授權頻譜下操作的裝置的另一進行中發射的潛在干擾而為不可能的，那麼可通知用戶設備(user equipment,UE)關於經 由授權頻譜中的主分量載波中的控制平面將某些子幀(或時隙)設置成休眠。以此方式，可減輕潛在干擾。對於另一實例，如果支援未授權頻譜中的LTE操作的基站或eNB準備使用未授權頻譜中的分量載波或資料發射，那麼基站可動態啟動一或多個子幀(或活躍時隙)以用於發射。另外，信令消息可包含用以通知裝置關於未授權頻譜中的操作的可用性或狀態的指示符或管理資訊。前述概念將進一步由圖1A到圖1E及其對應書面描述更詳細闡明。 For example, if the downlink transmission in the unlicensed spectrum is not possible due to potential interference from another ongoing transmission of a device that typically operates under the unlicensed spectrum, the user equipment can be notified (user equipment, UE) Certain subframes (or time slots) are set to sleep by a control plane in the primary component carrier in the licensed spectrum. In this way, potential interference can be mitigated. For another example, if a base station or eNB supporting LTE operation in an unlicensed spectrum is ready to use component carriers or data transmissions in an unlicensed spectrum, the base station can dynamically initiate one or more subframes (or active time slots) for emission. Additionally, the signaling message can include an indicator or management information to inform the device about the availability or status of operations in the unlicensed spectrum. The foregoing concepts will be further clarified in more detail by Figures 1A through 1E and their corresponding written descriptions.
圖1A說明在授權頻帶及未授權頻帶兩者中以載波聚合操作的示範性無線通訊系統。示範性無線通訊系統可包含(不限於)至少一個基站(例如，BS 101)或演進節點B(evolvedNodeB,eNB)及附著到例如BS 101等服務基站的至少一個UE(例如，UE 102)。基站(例如，BS 101)可通過與例如SON伺服器、MME、網路控制器及RNC等設備介接而附著到核心網路103。無線裝置(例如，UE 102)可通過使用授權頻譜及未授權頻譜兩者與基站(例如，BS 101)通信。而且，可在示範性無線通訊系統中使用載波聚合技術。載波聚合技術可至少利用(但不限於)授權頻譜中的第一分量載波及未授權頻譜中的第二分量載波。因此，能夠經由未授權頻譜進行通信的UE(例如，UE 102)將能夠支持經由至少兩個不同射頻(radio frequency,RF)頻譜進行通信，其中一個頻譜用於授權頻段通信，且另一頻譜用於未授權頻段通信。對於圖1A的示範性無線通訊系統，PCC及SCC可以聚合以便於通過使用授權頻譜中的PCC及未授權頻譜中的SCC在BS 101與UE 102之間通信。舉例來說，在可經由SCC發射UE 102的用戶資料時，PCC可用以在BS 101與UE 102之間發射控制信令。 FIG. 1A illustrates an exemplary wireless communication system operating in carrier aggregation in both licensed and unlicensed frequency bands. An exemplary wireless communication system can include, without limitation, at least one base station (e.g., BS 101) or an evolved Node B (eNB) and at least one UE (e.g., UE 102) attached to a serving base station, such as BS 101. A base station (e.g., BS 101) can be attached to core network 103 by interfacing with devices such as SON servers, MMEs, network controllers, and RNCs. A wireless device (e.g., UE 102) can communicate with a base station (e.g., BS 101) by using both a licensed spectrum and an unlicensed spectrum. Moreover, carrier aggregation techniques can be used in an exemplary wireless communication system. The carrier aggregation technique may utilize at least, but not limited to, a first component carrier in the licensed spectrum and a second component carrier in the unlicensed spectrum. Thus, a UE (eg, UE 102) capable of communicating via an unlicensed spectrum will be able to support communication via at least two different radio frequency (RF) spectrums, one for licensed band communication and the other for another spectrum Communicate in unlicensed bands. For the exemplary wireless communication system of FIG. 1A, the PCC and SCC can be aggregated to facilitate the use of the PCC in the licensed spectrum and the SCC in the unlicensed spectrum at the BS 101 and the UE. Communication between 102. For example, the PCC can be used to transmit control signaling between the BS 101 and the UE 102 when the user profile of the UE 102 can be transmitted via the SCC.
一般來說，可在授權頻段載波中發射例如子幀(或一些時隙)的動態啟動等未授權頻段分量載波配置的信令消息，所述授權頻段載波可為常規蜂窩式(例如，LTE)分量載波。未授權頻段中的可配置載波可被用作載波聚合操作中的輔分量載波(secondary component carrier,SCC)。因此，動態無線電資源配置機制可用於未授權頻段通信。 In general, a signaling message of an unlicensed band component carrier configuration, such as a dynamic start of a subframe (or some time slots), may be transmitted in a licensed band carrier, which may be a conventional cellular (eg, LTE) Component carrier. The configurable carrier in the unlicensed band can be used as a secondary component carrier (SCC) in the carrier aggregation operation. Therefore, dynamic radio resource allocation mechanisms can be used for unlicensed band communication.
圖1B說明配置根據本發明的示範性實施例中的一者的未授權頻譜中的分量載波的子幀或時隙，且一起參看圖1A及圖1B。圖1A的BS 101可將某一子幀(或時隙)配置為上行鏈路子幀(或時隙)或配置為下行鏈路子幀，或配置為BS 101與附著到BS 101的UE(例如，UE 102)之間的特殊子幀。子幀的配置可基於當前網路流量。舉例來說，如果當前網路流量需要許多下行鏈路，那麼較多子幀可經配置為下行鏈路子幀。對於圖1B的實例，假設未授權頻譜中的無線電幀具有每一無線電幀至少5個子幀，但對於所屬領域的一般技術人員，將顯而易見未授權頻譜可經配置以用於每一無線電幀任何數目個子幀或時隙。在步驟S101中，BS 101配置及啟動子幀0、2及4以用於發射，而子幀1及3未經配置且因此保持休眠。BS 101的配置及啟動可回應於相同信令消息同時出現；以其它方式，啟動可回應於不同信令消息在配置之後。根據通信系統的需要，子幀0、2及4中的任一者可為下行鏈 路子幀、上行鏈路子幀及特殊子幀中的一者。舉例來說，在未授權頻段分量載波中，可動態地啟動子幀(或一些時隙或一些時間段)。 1B illustrates a subframe or time slot in which component carriers in an unlicensed spectrum in accordance with one of the exemplary embodiments of the present invention are configured, and together with reference to FIGS. 1A and 1B. The BS 101 of FIG. 1A may configure a certain subframe (or time slot) as an uplink subframe (or time slot) or as a downlink subframe, or as a BS 101 and a UE attached to the BS 101 (eg, A special subframe between UEs 102). The configuration of the subframe can be based on the current network traffic. For example, if the current network traffic requires many downlinks, then more subframes may be configured as downlink subframes. For the example of FIG. 1B, it is assumed that radio frames in the unlicensed spectrum have at least 5 subframes per radio frame, but it will be apparent to one of ordinary skill in the art that the unlicensed spectrum can be configured for any number of each radio frame. Subframes or time slots. In step S101, the BS 101 configures and activates subframes 0, 2, and 4 for transmission, while subframes 1 and 3 are unconfigured and thus remain dormant. The configuration and initiation of BS 101 may occur simultaneously in response to the same signaling message; in other manners, initiation may be responsive to different signaling messages after configuration. Any of subframes 0, 2, and 4 may be downlink depending on the needs of the communication system One of a sub-frame, an uplink sub-frame, and a special sub-frame. For example, in an unlicensed band component carrier, a subframe (or some time slot or some time period) can be dynamically activated.
類似地，在未授權頻段分量載波中，可將子幀(或一些時隙或一些時間段)動態地設置為休眠。可在控制平面中經由授權頻譜發射用於分量載波配置的信令消息(例如，子幀的動態休眠)。具有將一些子幀設置成休眠的能力的分量載波可被用作載波聚合操作中的未授權頻段分量載波。 Similarly, in an unlicensed band component carrier, a subframe (or some time slot or some time period) can be dynamically set to sleep. Signaling messages for component carrier configuration (eg, dynamic sleep of subframes) may be transmitted via the licensed spectrum in the control plane. A component carrier having the ability to set some subframes to sleep can be used as an unlicensed band component carrier in a carrier aggregation operation.
圖1C說明將根據本發明的示範性實施例中的一者的未授權頻譜中的分量載波的子幀或時隙設置成休眠，且一起參看圖1C及圖1A。假定子幀0到4已經配置及啟動以用於通信，那麼在步驟S102中，BS 101可配置子幀1及3使其設置成休眠，且隨後將信令消息發射到UE 102以便通知UE關於子幀1及3的重新配置。BS 101的重新配置及休眠設置可回應於相同信令消息同時出現；以其它方式，設置成休眠可回應於不同信令消息在配置之後。信令消息被更詳細介紹於圖1D及其對應書面描述中。 1C illustrates setting a subframe or time slot of a component carrier in an unlicensed spectrum according to one of the exemplary embodiments of the present invention to sleep, and referring to FIG. 1C and FIG. 1A together. Assuming that subframes 0 through 4 have been configured and enabled for communication, then in step S102, BS 101 can configure subframes 1 and 3 to be set to sleep, and then transmit a signaling message to UE 102 to inform the UE about Reconfiguration of subframes 1 and 3. The reconfiguration and sleep settings of BS 101 may occur simultaneously in response to the same signaling message; otherwise, setting to sleep may be responsive to different signaling messages after configuration. The signaling message is described in more detail in Figure 1D and its corresponding written description.
一般來說，用於發送信令消息以啟動未授權頻譜的分量載波中的子幀或將其設置成休眠的決定可基於干擾條件以及流量條件。舉例來說，如果不存在在啟動時間週期內在相同未授權頻譜中發射的另一裝置，那麼可啟動子幀或時間週期或時隙。而且，在當前網路流量高時可使用子幀或時間週期或時隙的較多啟動。 In general, the decision to send a signaling message to initiate a subframe in a component carrier of an unlicensed spectrum or to set it to sleep may be based on interference conditions as well as traffic conditions. For example, if there is no other device transmitting in the same unlicensed spectrum during the startup time period, a subframe or time period or time slot may be initiated. Moreover, more starts of subframes or time periods or time slots can be used when current network traffic is high.
BS可通過使用圖1D中所示的信令消息中的一者或組合 來控制UE，圖1D說明為了在未授權頻譜內操作而在基站與用戶設備之間交換的信令消息。應注意，圖1D中的步驟不需要相同特定序列，同樣本發明也不限於恰好相同的信令消息。在步驟S121中，BS可將信令消息發射或廣播到UE，且信令消息可包含指示BS能夠支持未授權頻譜中的LTE操作的指示符。舉例來說，指示符可為不在當前使用的新系統消息塊(system information block,SIB)中的一位或一位以上的旗標。或者，代替發射SIB中的指示符，可在UE附著過程期間將指示符從BS發射到UE或UE的群組。指示符可經由廣播通道或經由多播在新消息中發射或嵌入於當前存在的消息中。 The BS can use one or a combination of the signaling messages shown in FIG. 1D To control the UE, Figure 1D illustrates the signaling messages exchanged between the base station and the user equipment for operation within the unlicensed spectrum. It should be noted that the steps in Figure 1D do not require the same specific sequence, and the invention is also not limited to exactly the same signaling messages. In step S121, the BS may transmit or broadcast a signaling message to the UE, and the signaling message may include an indicator indicating that the BS can support LTE operation in the unlicensed spectrum. For example, the indicator can be one or more than one flag in a new system information block (SIB) that is currently in use. Alternatively, instead of transmitting an indicator in the SIB, an indicator may be transmitted from the BS to the UE or a group of UEs during the UE attach procedure. The indicator may be transmitted or embedded in the new message via the broadcast channel or via multicast.
在步驟S122中，UE可指示能夠在指示符中實施未授權頻譜中的LTE無線通訊，且將指示符發射到BS。可將指示符嵌入於附著請求消息中。指示符可隱含地意指UE也將支持未授權頻譜中的LTE分量載波的動態啟動及動態休眠設置，或可需要額外指示符來指示對動態啟動及休眠設置的支援。 In step S122, the UE may indicate that LTE wireless communication in the unlicensed spectrum can be implemented in the indicator and transmit the indicator to the BS. The indicator can be embedded in the attach request message. The indicator may implicitly mean that the UE will also support dynamic start and dynamic sleep settings of the LTE component carrier in the unlicensed spectrum, or may require additional indicators to indicate support for dynamic boot and sleep settings.
在步驟S123中，BS可通過將一或多個起始參數發射到UE來配置未授權頻譜中的LTE操作。起始參數可為對預先存在的上行鏈路-下行鏈路配置(例如，LTE TDD上行鏈路-下行鏈路配置0到7)的選擇。基於對當前網路流量的需求，BS可通過將載波聚合起始參數發射到UE以便從預先存在的TDD上行鏈路-下行鏈路配置進行選擇來起始UE以用於未授權頻譜中的LTE操作。或者或另外，起始參數可包含什麼子幀經配置為下行鏈路、上行 鏈路或特殊及什麼子幀保持休眠。在未授權頻譜的分量載波的設置程式期間，在用於載波聚合初始化的設置消息信令中可包含上文所提到的起始資訊。 In step S123, the BS may configure LTE operation in the unlicensed spectrum by transmitting one or more initial parameters to the UE. The starting parameter may be a selection of a pre-existing uplink-downlink configuration (eg, LTE TDD uplink-downlink configuration 0 to 7). Based on the demand for current network traffic, the BS may initiate the UE for LTE in the unlicensed spectrum by transmitting a carrier aggregation initiation parameter to the UE to select from a pre-existing TDD uplink-downlink configuration operating. Alternatively or additionally, the starting parameters may include what subframes are configured for downlink, uplink The link or special and what subframes remain dormant. The setup information mentioned above may be included in the setup message signaling for carrier aggregation initialization during the setup procedure of the component carrier of the unlicensed spectrum.
此外，在UE附著過程期間，例如RRC重新配置消息等RRC信令消息可包含未授權頻譜中的LTE操作的一或多個指示符或描述作為前述起始參數。舉例來說，指示符可用以指示分量載波將在未授權頻譜中操作。舉例來說，索引(或資訊元素)可用以指示什麼輔分量載波將在未授權頻譜中的什麼通道中操作，因為在ISM頻段的通道化之後可存在許多可能的通道。索引(或資訊元素)還可或替代地指示將使用什麼未授權頻段(例如，2.4GHz、5GHz、3.5GHz)。不同未授權頻段中的每一者可由頻段識別號或索引表示。 Moreover, during the UE attach procedure, an RRC signaling message, such as an RRC reconfiguration message, may include one or more indicators or descriptions of LTE operations in the unlicensed spectrum as the aforementioned starting parameters. For example, an indicator can be used to indicate that the component carrier will operate in an unlicensed spectrum. For example, an index (or information element) can be used to indicate what secondary component carrier will operate in what channel in the unlicensed spectrum, as there may be many possible channels after channelization of the ISM band. The index (or information element) may also or alternatively indicate what unlicensed band (eg, 2.4 GHz, 5 GHz, 3.5 GHz) will be used. Each of the different unlicensed bands may be represented by a band identification number or index.
在步驟S124中，BS可通過將一或多個重新配置參數發射到UE來重新配置未授權頻譜中的LTE操作。確切地說，動態無線電資源能力及配置可在使用未授權頻譜中的分量載波的通信已經在操作中時重新配置。舉例來說，從BS發射到UE的RRC重新配置消息可包含能夠支援未授權頻譜中的LTE操作及配置未授權頻譜中的LTE操作的指示符。 In step S124, the BS may reconfigure the LTE operation in the unlicensed spectrum by transmitting one or more reconfiguration parameters to the UE. Rather, dynamic radio resource capabilities and configurations can be reconfigured while communication using component carriers in the unlicensed spectrum is already in operation. For example, an RRC reconfiguration message transmitted from a BS to a UE may include an indicator capable of supporting LTE operation in an unlicensed spectrum and configuring LTE operations in an unlicensed spectrum.
舉例來說，可從BS發射例如RRC重新配置消息等信令消息以重新配置什麼未授權頻段將被用於通信。由於通道化，所以可存在用以選擇的眾多未授權頻段通道。舉例來說，對於802.11來說，存在在2.4GHz ISM頻段中使用的11個通道。BS可重新配 置UE以基於網路的干擾條件或流量需求而使用不同通道。因此，可嵌入于RRC-重新配置消息中的重新配置參數可包含通道索引、載波頻率索引等。 For example, a signaling message, such as an RRC reconfiguration message, can be transmitted from the BS to reconfigure what unlicensed bands will be used for communication. Due to channelization, there may be numerous unlicensed band channels for selection. For example, for 802.11, there are 11 channels used in the 2.4 GHz ISM band. BS can be reconfigured The UE is configured to use different channels based on network-based interference conditions or traffic demands. Thus, the reconfiguration parameters that may be embedded in the RRC-Reconfiguration message may include a channel index, a carrier frequency index, and the like.
在步驟S125中，BS可發射信令消息以啟動分量載波。在示範性實施例中的一者中，配置及啟動未授權頻譜中的分量載波。然而，替代地，在配置未授權頻譜中的分量載波之後，可實際上不啟動分量載波，且將在使用分量載波來載送資料之前需要分量載波的啟動。為了在已配置分量載波之後啟動分量載波，BS可利用例如具有在媒體存取控制(media access control,MAC)層消息內的Scell啟動的控制元件。 In step S125, the BS may transmit a signaling message to start the component carrier. In one of the exemplary embodiments, component carriers in the unlicensed spectrum are configured and enabled. However, alternatively, after configuring the component carriers in the unlicensed spectrum, the component carriers may not actually be activated, and the activation of the component carriers will be required before the component carriers are used to carry the data. In order to initiate a component carrier after the component carrier has been configured, the BS may utilize, for example, a control element with Scell initiation within a media access control (MAC) layer message.
在步驟S126中，BS可更改未授權頻譜中的分量載波的個別子幀或時隙的配置。因為未授權頻譜可由多方共用，所以個別子幀或時隙的配置的更改將可能需要相對快速的調適速度，且還可由多方共用未授權頻段以便快速配置、啟動未授權頻譜中的分量載波的特定子幀或時隙或將其設置成休眠。因此，實體層通道控制信令可用以快速配置、啟動某一子幀或將其設置成休眠。 In step S126, the BS may change the configuration of individual subframes or time slots of component carriers in the unlicensed spectrum. Since the unlicensed spectrum can be shared by multiple parties, changes to the configuration of individual subframes or time slots will likely require relatively fast adaptation speeds, and the unlicensed frequency bands may also be shared by multiple parties in order to quickly configure and initiate the specificity of component carriers in the unlicensed spectrum. Subframe or time slot or set it to sleep. Therefore, physical layer channel control signaling can be used to quickly configure, initiate a subframe, or set it to sleep.
舉例來說，物理下行鏈路控制通道(physical downlink control channel,PDCCH)可用於基站以更改子幀或時隙的配置。無線電網路臨時識別符(radio network temporarily identifier,RNTI)可用以識別PDCCH的接收器，以使得UE可在解碼具有無線電網路臨時識別符(radio network temporarily identifier,RNTI)的PDCCH後即刻獲得子幀或時隙的新配置。每一UE可由每一 UE的唯一RNTI識別。替代地，RNTI可用以識別UE的社區或群組內的所有UE以用於動態無線電資源配置。而且，未授權通道RNTI可用以用信號通知使用相同未授權通道的所有UE。可在通常為LTE通信預留的授權頻段的PCC中在控制平面中發射如先前所提及的載送PDCCH及RNTI的控制信號。 For example, a physical downlink control channel (PDCCH) can be used by a base station to change the configuration of a subframe or a time slot. A radio network temporary identifier (RNTI) may be used to identify a receiver of the PDCCH such that the UE may obtain a subframe immediately after decoding a PDCCH having a radio network temporary identifier (RNTI) Or a new configuration of time slots. Each UE can be each Unique RNTI identification of the UE. Alternatively, the RNTI may be used to identify all UEs within the community or group of the UE for dynamic radio resource configuration. Moreover, the unlicensed channel RNTI can be used to signal all UEs that use the same unlicensed channel. The control signals carrying the PDCCH and RNTI as previously mentioned may be transmitted in the control plane in a PCC of the licensed band reserved for LTE communication.
因為在另一裝置可具有意欲使用的未授權頻譜中的進行中發射時，在未授權頻譜上的LTE操作可能不總是成功的，所以可以提出用以操縱未授權頻譜中的進行中操作的機制。圖1E說明用以操縱根據本發明的示範性實施例中的一者的未授權頻譜中的進行中操作的機制。在步驟S131中，BS 141可將信令消息發射到UE 142，所述信令消息包含用以指示未授權頻段中的通信的不確定性的不確定性指示符。具有不確定性指示符的信令消息的發射可或可不為檢測的結果。視情況，BS 141可執行檢測，且發現第二裝置143已經使用未授權頻譜。視情況，UE 142還可發射回饋信令消息以報告是否檢測到不確定的資料發射。回應於接收到不確定性指示符，UE 142在步驟S131中可發射回饋信號以指示是通過例如發射ACK信號正確地接收還是通過發射例如NACK信號不正確地接收不確定的資料發射。 Since LTE operation on the unlicensed spectrum may not always be successful when another device may have an in-progress transmission in the unlicensed spectrum that is intended to be used, it may be proposed to manipulate the ongoing operation in the unlicensed spectrum. mechanism. FIG. 1E illustrates a mechanism for manipulating an ongoing operation in an unlicensed spectrum in accordance with one of the exemplary embodiments of the present invention. In step S131, the BS 141 may transmit a signaling message to the UE 142, the signaling message including an uncertainty indicator to indicate the uncertainty of the communication in the unlicensed band. The transmission of the signaling message with the uncertainty indicator may or may not be the result of the detection. As the case may be, the BS 141 may perform the detection and find that the second device 143 has used the unlicensed spectrum. Optionally, the UE 142 may also transmit a feedback signaling message to report whether an indeterminate data transmission is detected. In response to receiving the uncertainty indicator, the UE 142 may transmit a feedback signal in step S131 to indicate whether the indeterminate data transmission was received incorrectly by, for example, transmitting the ACK signal or by transmitting, for example, a NACK signal.
在示範性實施例中的一者中，BS 141可發射重新配置消息以基於第二裝置143的檢測的結果或基於是否已接收ACK或NACK來重新配置UE 142。舉例來說，在檢測到使用將與BS 141與UE 142之間的通信衝突的特定通道的第二裝置143後，BS 141 可即刻發射具有更新載波聚合重新配置參數的重新配置消息(例如，S124)，所述更新載波聚合重新配置參數將改變到不同通道或到不同輔分量載波的通信。類似地，BS 141還可在從UE 142接收NACK後即刻切換到不同通道。BS 141還可在檢測到干擾條件在某一時間週期很嚴重後即刻發射實體層消息(例如，S126)以將某些子幀或時隙設置成休眠。 In one of the exemplary embodiments, the BS 141 may transmit a reconfiguration message to reconfigure the UE 142 based on the result of the detection by the second device 143 or based on whether an ACK or NACK has been received. For example, after detecting the second device 143 using a specific channel that will collide with the communication between the BS 141 and the UE 142, the BS 141 A reconfiguration message with updated carrier aggregation reconfiguration parameters (e.g., S124) may be transmitted immediately, the update carrier aggregation reconfiguration parameters will change to different channels or to different secondary component carriers. Similarly, BS 141 may also switch to a different channel upon receiving a NACK from UE 142. The BS 141 may also transmit a physical layer message (e.g., S126) upon detecting that the interference condition is severe for a certain period of time to set certain subframes or time slots to sleep.
圖2為說明根據本發明的示範性實施例中的一者的未授權頻譜中的無線通訊的啟動的流程圖。在任選步驟S201a中，BS可檢測未授權頻譜的條件，例如是否存在當前在未授權頻譜中發生的進行中發射。類似地，在任選步驟S201b中，UE可檢測未授權頻譜的條件，例如是否存在當前在未授權頻譜中發生的進行中發射。在步驟S202中，BS可基於S201a及/或S201b的結果確定是否經由未授權頻譜進行通信。在步驟S203中，假定BS已確定經由未授權頻譜進行通信，那麼BS可將信令消息發射到UE以配置及啟動未授權頻譜中的無線電資源。在步驟S204中，BS及UE將在BS將未授權頻譜的分量載波的子幀或時隙的配置的資訊發射到UE之後在未授權頻譜中的經配置及啟動無線電資源中進行通信。 2 is a flow diagram illustrating the initiation of wireless communication in an unlicensed spectrum of one of the exemplary embodiments of the present invention. In optional step S201a, the BS may detect conditions of the unlicensed spectrum, such as whether there is an ongoing transmission currently occurring in the unlicensed spectrum. Similarly, in optional step S201b, the UE may detect conditions of the unlicensed spectrum, such as whether there is an ongoing transmission currently occurring in the unlicensed spectrum. In step S202, the BS may determine whether to communicate via the unlicensed spectrum based on the result of S201a and/or S201b. In step S203, assuming that the BS has determined to communicate via the unlicensed spectrum, the BS may transmit a signaling message to the UE to configure and initiate radio resources in the unlicensed spectrum. In step S204, the BS and the UE will communicate in the configured and activated radio resources in the unlicensed spectrum after the BS transmits the configured information of the subframe or time slot of the component carrier of the unlicensed spectrum to the UE.
在示範性實施例中的一者中，步驟201a及步驟201b可皆用以收集未授權頻段中的資訊。在示範性實施例中的另一者中，將僅使用步驟201a或步驟201b中的一者。可在例如常規LTE分量載波等授權頻段中發送在步驟201b中的報告消息發射。同 樣，可在步驟203中在例如常規LTE分量載波等授權頻段中發送信令消息發射。 In one of the exemplary embodiments, step 201a and step 201b may both be used to collect information in an unlicensed frequency band. In the other of the exemplary embodiments, only one of step 201a or step 201b will be used. The report message transmission in step 201b may be transmitted in an authorized frequency band, such as a conventional LTE component carrier. with As such, signaling message transmissions may be sent in a licensed frequency band, such as a conventional LTE component carrier, in step 203.
為了避免干擾或為了適應當前流量條件，未授權頻譜中的分量載波的啟動可經配置有延遲。圖3說明根據本發明的示範性實施例中的一者的具有延遲的啟動信令消息。對於此示範性實施例，BS可經由PCC發射啟動信令消息301以在具有延遲時間值302的情況下啟動未授權頻譜中的SCC，以使得SCC的啟動將在延遲時間值302之後立即開始。另外，啟動信令消息還可包含延遲持續時間303，以使得未授權頻段通信將在延遲時間值302加上延遲持續時間303值之後開始。 In order to avoid interference or to adapt to current traffic conditions, the initiation of component carriers in the unlicensed spectrum may be configured with a delay. 3 illustrates a start signaling message with delays in accordance with one of the exemplary embodiments of the present invention. For this exemplary embodiment, the BS may transmit a Start Signaling message 301 via the PCC to initiate an SCC in the unlicensed spectrum with a delay time value of 302 such that the start of the SCC will begin immediately after the delay time value 302. Additionally, the initiation signaling message may also include a delay duration 303 such that the unlicensed band communication will begin after the delay time value 302 plus the delay duration 303 value.
圖4說明根據本發明的示範性實施例中的一者的具有持續時間的啟動信令消息。對於此示範性實施例，BS可經由PCC發射啟動信令消息401以啟動未授權頻譜中的SCC。啟動信令消息401可含有啟動持續時間402值，所述啟動持續時間402值將描述SCC的啟動的持續時間。換句話說，啟動持續時間402將指示未授權頻譜中的通信將發生的時間長度。在啟動持續時間402期滿後，SCC可即刻自動設置成休眠而無額外信令消息。 4 illustrates a start signaling message with duration in accordance with one of the exemplary embodiments of the present invention. For this exemplary embodiment, the BS may transmit an initiation signaling message 401 via the PCC to initiate an SCC in the unlicensed spectrum. The start signaling message 401 may contain a start duration 402 value that will describe the duration of the start of the SCC. In other words, the startup duration 402 will indicate the length of time that communication in the unlicensed spectrum will occur. After the start duration 402 expires, the SCC can be automatically set to sleep immediately without additional signaling messages.
圖5說明根據本發明的示範性實施例中的一者的具有開始時間及結束時間的啟動信令消息。對於此示範性實施例，BS可經由PCC發射啟動信令消息501以啟動未授權頻譜中的SCC。啟動信令消息501可含有T1(啟動開始時間502)及T2(啟動結束時間503)。以此方式，在未授權頻譜上的通信將直到T1方開始， 且將在T2結束。 FIG. 5 illustrates an initiation signaling message with a start time and an end time in accordance with one of the exemplary embodiments of the present invention. For this exemplary embodiment, the BS may transmit an initiation signaling message 501 via the PCC to initiate an SCC in the unlicensed spectrum. The start signaling message 501 may contain T1 (start start time 502) and T2 (start end time 503). In this way, communication on the unlicensed spectrum will begin until the T1 side. And will end at T2.
啟動信令消息還可包含子幀或時槽號以及子幀或時隙的對應配置資訊(例如上行鏈路、下行鏈路、特殊)。圖6說明根據本發明的示範性實施例中的一者的具有系統幀號及/或子幀號的啟動信令消息。在此示範性實施例中，BS經由PCC將啟動信令消息601發射到UE來配置未授權頻譜中的SCC。第一啟動信令消息601可含有包含無線電幀的系統幀號及對應於系統幀號的子幀號的資訊以便識別將配置及啟動的子幀603。類似地，第二啟動信令消息602可含有類似資訊以便識別將配置及啟動的子幀604。此外，第一啟動信令消息601可例如將子幀603配置為下行鏈路子幀，且第二啟動信令消息602可例如將子幀604配置為上行鏈路子幀。應注意，替代地，第一啟動信令消息601可配置及/或啟動子幀603及子幀604兩者。 The initiation signaling message may also include a subframe or slot number and corresponding configuration information (eg, uplink, downlink, special) of the subframe or slot. 6 illustrates an initiation signaling message with a system frame number and/or a subframe number in accordance with one of the exemplary embodiments of the present invention. In this exemplary embodiment, the BS transmits a Startup Signaling message 601 to the UE via the PCC to configure the SCC in the unlicensed spectrum. The first initiation signaling message 601 may contain information including the system frame number of the radio frame and the subframe number corresponding to the system frame number to identify the subframe 603 to be configured and activated. Similarly, the second initiation signaling message 602 can contain similar information to identify the subframe 604 that will be configured and activated. Further, the first initiation signaling message 601 can, for example, configure the subframe 603 as a downlink subframe, and the second initiation signaling message 602 can, for example, configure the subframe 604 as an uplink subframe. It should be noted that alternatively, the first initiation signaling message 601 can configure and/or initiate both subframe 603 and subframe 604.
此外，啟動信令消息可進一步包含識別未授權頻譜中的SCC的載波頻率以及未授權頻譜中的SCC的通道ID。以此方式，動態載波頻率選擇以及動態通道跳躍可實施於未授權頻譜中以便快速調整以適應干擾條件及流量情形。圖7說明根據本發明的示範性實施例中的一者的未授權頻譜中的多個分量載波的使用。對於此示範性實施例，基站可發射第一啟動信令消息701，所述第一啟動信令消息經由PCC載送頻率資訊f1及通道資訊以配置未授權頻譜中的頻率f1的SCC，以使得頻率f1的子幀703可經配置以使用頻率f1的SCC的特定通道。類似地，回應於干擾條件或流量情 形的改變，基站可發射第二啟動信令消息702，所述第二啟動信令消息經由PCC載送頻率資訊f2及通道資訊以配置未授權頻譜中的頻率f2的SCC，以使得頻率f2的子幀704可經配置以使用頻率f2的SCC的特定通道。以此方式，先前使用f1的SCC操作的UE可稍晚切換到使用f2的SCC。 Further, the initiation signaling message may further include a carrier frequency identifying the SCC in the unlicensed spectrum and a channel ID of the SCC in the unlicensed spectrum. In this way, dynamic carrier frequency selection and dynamic channel hopping can be implemented in the unlicensed spectrum for fast adjustments to accommodate interference conditions and traffic conditions. 7 illustrates the use of multiple component carriers in an unlicensed spectrum of one of the exemplary embodiments of the present invention. For this exemplary embodiment, the base station may transmit a first initiation signaling message 701, the first initiation signaling message carrying frequency information f1 and channel information via the PCC to configure the SCC of the frequency f1 in the unlicensed spectrum, such that Subframe 703 of frequency f1 may be configured to use a particular channel of the SCC of frequency f1. Similarly, responding to interference conditions or traffic conditions The base station may transmit a second start signaling message 702, and the second start signaling message carries the frequency information f2 and the channel information via the PCC to configure the SCC of the frequency f2 in the unlicensed spectrum, so that the frequency f2 Subframe 704 can be configured to use a particular channel of the SCC of frequency f2. In this way, a UE that previously operated with the SCC of f1 may switch to the SCC using f2 later.
圖8說明根據本發明的示範性實施例中的一者的從用戶設備的角度提出的未授權頻譜共用方法的概述。在步驟S801中，UE將經由授權頻譜中的第一分量載波接收配置消息以在未授權頻譜中操作。在步驟S802中，UE將回應於接收到配置消息經由未授權頻譜中的第二分量載波接收UE的消息，其中第一分量載波及第二分量載波為聚合載波。在步驟S803中，UE將經由授權頻譜中的第一分量載波接收重新配置消息以在未授權頻譜中操作。重新配置消息將基於流量條件或干擾情形調整未授權頻譜中的操作。前述消息可為用戶消息或例如機器產生消息等非用戶消息。 8 illustrates an overview of an unlicensed spectrum sharing method presented from the perspective of a user equipment in accordance with one of the exemplary embodiments of the present invention. In step S801, the UE will receive a configuration message via the first component carrier in the licensed spectrum to operate in the unlicensed spectrum. In step S802, the UE will receive a message of the UE via the second component carrier in the unlicensed spectrum in response to receiving the configuration message, where the first component carrier and the second component carrier are aggregated carriers. In step S803, the UE will receive a reconfiguration message via the first component carrier in the licensed spectrum to operate in the unlicensed spectrum. The reconfiguration message will adjust the operation in the unlicensed spectrum based on traffic conditions or interference conditions. The aforementioned message may be a user message or a non-user message such as a machine generated message.
在示範性實施例中的一者中，經由未授權頻譜中的第二分量載波發射的消息可僅包含消息的有效負載部分(即，不包含控制信令)，同時僅經由授權頻譜中的第一分量載波發射控制信令，同時第一分量載波及第二分量載波為相同聚合載波。 In one of the exemplary embodiments, the message transmitted via the second component carrier in the unlicensed spectrum may only include the payload portion of the message (ie, does not include control signaling) while only passing through the A component carrier transmits control signaling, while the first component carrier and the second component carrier are the same aggregate carrier.
圖9說明根據本發明的示範性實施例中的一者的從基站的角度提出的未授權頻譜共用方法的概述。在步驟S901中，基站將經由授權頻譜中的第一分量載波發射配置消息以在未授權頻譜中操作。在步驟S902中，基站將回應於接收到配置消息經由未授 權頻譜中的第二分量載波發射消息，其中第一分量載波及第二分量載波為聚合載波。在步驟S903中，基站將經由授權頻譜中的第一分量載波發射重新配置消息以在未授權頻譜中操作。重新配置消息將基於流量條件或干擾情形調整未授權頻譜中的操作。前述消息可為用戶消息或例如機器產生消息等非用戶消息。 9 illustrates an overview of an unlicensed spectrum sharing method proposed from the perspective of a base station in accordance with one of the exemplary embodiments of the present invention. In step S901, the base station will transmit a configuration message via the first component carrier in the licensed spectrum to operate in the unlicensed spectrum. In step S902, the base station will respond to the receipt of the configuration message via unlicensed The second component carrier in the weight spectrum transmits a message, wherein the first component carrier and the second component carrier are aggregate carriers. In step S903, the base station will transmit a reconfiguration message via the first component carrier in the licensed spectrum to operate in the unlicensed spectrum. The reconfiguration message will adjust the operation in the unlicensed spectrum based on traffic conditions or interference conditions. The aforementioned message may be a user message or a non-user message such as a machine generated message.
在示範性實施例中的一者中，經由未授權頻譜中的第二分量載波發射的消息可僅包含消息的有效負載部分(即，不包含控制信令)，同時僅經由授權頻譜中的第一分量載波發射控制信令，同時第一分量載波及第二分量載波為相同聚合載波。 In one of the exemplary embodiments, the message transmitted via the second component carrier in the unlicensed spectrum may only include the payload portion of the message (ie, does not include control signaling) while only passing through the A component carrier transmits control signaling, while the first component carrier and the second component carrier are the same aggregate carrier.
圖10說明根據本發明的實施例中的一者的示範性基站。所提出的基站將至少包含(但不限於)耦合到類比轉數位(analog-to-digital,A/D)/數位轉類比(digital-to-analog,D/A)轉換器1002的處理電路1001、發射器1003、接收器1004及一或多個天線單元1005。發射器1003及接收器1004無線地發射下行鏈路信號及接收上行鏈路信號。發射器1003將參與無線資料的發射(如前所述)，且類似地接收器1004將參與無線資料的接收(如前所述)。發射器1003及接收器1004還可執行例如低噪音放大、阻抗匹配、混頻、向上或向下頻率轉換、濾波、放大及其類似者等操作。(A/D)/(D/A)轉換器1002經配置以在上行鏈路信號處理期間從類比信號格式轉換成數位信號格式，且在下行鏈路信號處理期間從數位信號格式轉換成類比信號格式。 Figure 10 illustrates an exemplary base station in accordance with one of the embodiments of the present invention. The proposed base station will include, but is not limited to, a processing circuit 1001 coupled to an analog-to-digital (A/D)/digital-to-analog (D/A) converter 1002. , a transmitter 1003, a receiver 1004, and one or more antenna units 1005. Transmitter 1003 and receiver 1004 wirelessly transmit downlink signals and receive uplink signals. Transmitter 1003 will participate in the transmission of the wireless material (as previously described), and similarly receiver 1004 will participate in the reception of the wireless data (as previously described). Transmitter 1003 and receiver 1004 may also perform operations such as low noise amplification, impedance matching, mixing, up or down frequency conversion, filtering, amplification, and the like. The (A/D)/(D/A) converter 1002 is configured to convert from an analog signal format to a digital signal format during uplink signal processing and from a digital signal format to an analog signal during downlink signal processing. format.
處理電路1001經配置以處理數位信號，且執行根據本發 明的前述示範性實施例的未授權頻譜共用方法的所提出方法的程式。而且，處理電路1001可視情況耦合到非暫時性存儲媒體以存儲程式設計代碼、裝置配置、碼本、緩衝或永久資料等。處理電路1001的功能可通過使用例如微處理器、微控制器、DSP晶片、FPGA等可程式設計單元來實施。處理電路1001的功能也可用單獨電子裝置或IC來實施，且處理電路也可用硬體或軟體來實施。 Processing circuit 1001 is configured to process digital signals and perform according to the present invention A program of the proposed method of the unlicensed spectrum sharing method of the foregoing exemplary embodiment. Moreover, processing circuit 1001 can optionally be coupled to a non-transitory storage medium to store programming code, device configuration, codebook, buffer or permanent data, and the like. The functions of the processing circuit 1001 can be implemented by using a programmable unit such as a microprocessor, a microcontroller, a DSP chip, an FPGA, or the like. The function of the processing circuit 1001 can also be implemented by a separate electronic device or IC, and the processing circuit can also be implemented by hardware or software.
術語“基站”(base station,BS)可表示以下各者中的任一者：家庭演進節點B(Home Evolved Node B,HeNB)、eNB、先進基站(advanced base station,ABS)、基站收發器系統(base transceiver system,BTS)、存取點、家庭基站、中繼站、散射器、中繼器、中間節點、中繼裝置及/或基於衛星的通信基站。 The term "base station" (BS) may mean any of the following: Home Evolved Node B (HeNB), eNB, advanced base station (ABS), base transceiver system (base transceiver system, BTS), access point, home base station, relay station, diffuser, repeater, intermediate node, relay device, and/or satellite-based communication base station.
圖11在功能框圖方面說明根據本發明的實施例中的一者的示範性用戶設備。UE至少含有(但不限於)耦合到類比轉數位(A/D)/數位轉類比(D/A)轉換器1102的處理電路1101、發射器1103、接收器1104及一或多個天線單元1105。處理電路1101將參與未授權頻譜共用方法的實施(如先前描述)。發射器1103將參與如先前描述的無線資料的發射，且接收器1104將參與如先前描述的無線資料的發射。這些組件的功能類似於基站的功能，且因此將不重複這些功能的描述。 11 illustrates an exemplary user equipment in accordance with one of the embodiments of the present invention in terms of a functional block diagram. The UE includes, but is not limited to, a processing circuit 1101, a transmitter 1103, a receiver 1104, and one or more antenna elements 1105 coupled to an analog-to-digital (A/D)/digital to analog (D/A) converter 1102. . Processing circuit 1101 will participate in the implementation of the unlicensed spectrum sharing method (as previously described). The transmitter 1103 will participate in the transmission of the wireless data as previously described, and the receiver 1104 will participate in the transmission of the wireless data as previously described. The functions of these components are similar to those of the base station, and thus the description of these functions will not be repeated.
在本發明中，術語“用戶設備”(user equipment,UE)可表示各種實施例，其(例如)可包含(但不限於)移動站、先進移動站(advanced mobile station,AMS)、伺服器、用戶端、桌 上型電腦、膝上型電腦、網路電腦、工作站、個人數位助理(personal digital assistant,PDA)、平板個人電腦(personal computer,PC)、掃描器、電話裝置、尋呼機、相機、電視、掌上型視頻遊戲裝置、音樂裝置、無線感測器等等。在一些應用中，UE可為在例如公共汽車、火車、飛機、船隻、汽車等移動環境中操作的固定電腦裝置。 In the present invention, the term "user equipment" (UE) may denote various embodiments, which may include, for example, but not limited to, a mobile station, an advanced mobile station (AMS), a server, Client, table Laptop, laptop, network computer, workstation, personal digital assistant (PDA), personal computer (PC), scanner, telephone device, pager, camera, TV, handheld Video game devices, music devices, wireless sensors, and the like. In some applications, the UE may be a stationary computer device that operates in a mobile environment such as a bus, train, airplane, boat, car, or the like.
在本發明中，目標之一為提供用於在未授權頻譜中操作的LTE通信系統的動態子幀配置的信令及配置方法的解決方案。然而，所屬領域的一般技術人員將顯而易見本發明也可適用於其它通信系統，例如在未授權頻譜中操作的5G通信系統、IEEE 802.11、IEEE 802.16、WiMAX。 In the present invention, one of the goals is a solution to provide signaling and configuration methods for dynamic subframe configuration of an LTE communication system operating in an unlicensed spectrum. However, it will be apparent to one of ordinary skill in the art that the present invention is also applicable to other communication systems, such as 5G communication systems operating in an unlicensed spectrum, IEEE 802.11, IEEE 802.16, WiMAX.
用於本發明的所揭露實施例的詳細描述中的元件、動作或指令不應解釋為對本發明來說為絕對關鍵或必要的，除非明確地如此描述。而且，如本文中所使用，不定冠詞“一”可以包含一個以上專案。如果想表示只有一個項目，那麼可以使用術語“單個”或類似語言。此外，如本文中所使用，在多個項目和/或多個項目種類的列表之前的術語“中的任一者”希望包含所述項目和/或項目種類個別地或結合其它項目和/或其它項目種類“中的任一者”、“中的任何組合”、“中的任何多個”和/或“中的多個的任何組合”。另外，如本文中所使用，術語“集合”希望包含任何數量個項目，包含零個。另外，如本文中所使用，術語“數量”希望包含任何數量，包含零。 The elements, acts, or instructions in the detailed description of the disclosed embodiments of the invention should not be construed as being critical or essential to the invention unless explicitly described. Moreover, as used herein, the indefinite article """ If you want to represent only one item, you can use the term "single" or similar language. Moreover, as used herein, the term "any of" preceding a list of items and/or plurality of item categories is intended to include the item and/or item type individually or in combination with other items and/or Any of the other item categories "any of the combinations", "any combination of", "any of the plurality", and/or any combination of the plurality. Also, as used herein, the term "set" is intended to encompass any number of items, including zero. Also, as used herein, the term "amount" is intended to include any quantity, including zero.
所屬領域的技術人員將顯而易見，在不脫離本發明的範圍或精神的情況下，可對所揭露的實施例的結構進行各種修改和變化。鑒於以上內容，希望本發明涵蓋本發明的修改和變化，只要所述修改和變化落入申請專利範圍和其等效物的範圍內。 It will be apparent to those skilled in the art that various modifications and changes can be made to the structure of the disclosed embodiments without departing from the scope of the invention. In view of the above, it is intended that the present invention covers the modifications and variations of the present invention as long as the modifications and variations fall within the scope of the claims and their equivalents.
S801~S803‧‧‧步驟 S801~S803‧‧‧Steps
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