TWI411251B - Access point and method for enabling power savings in wireless communications - Google Patents
Access point and method for enabling power savings in wireless communications Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
- H04W8/186—Processing of subscriber group data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/08—User group management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
- H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
- H04W52/0219—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave where the power saving management affects multiple terminals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
Description
本發明大致有關無線封包資料通信系統,且特別有關無線通信系統中效率定址及功率節省方法及系統。 The present invention relates generally to wireless packet data communication systems, and more particularly to methods and systems for efficiency addressing and power saving in wireless communication systems.
訊框整合及訊框叢發係為增強無線區域網路(WLAN)系統效能之兩提議機構。該機構係被考慮802.11n擴充為可促成較高產出無線區域網路裝置之802.11無線區域網路標準。TGnSync及WWISE提議均考慮各類訊框整合及訊框叢發方案。 Frame integration and frame bursting are two proposed mechanisms to enhance the performance of wireless local area network (WLAN) systems. The agency is being considered to expand 802.11n to an 802.11 wireless local area network standard that can facilitate higher-output wireless local area network devices. Both TGnSync and WWISE proposals consider various types of frame integration and frame bursting solutions.
第1圖顯示TGnSync,WwiSE或兩者提議之不同類型訊框整合及訊框叢發方案。整合方案大致可依據其整合之封包零件來做區分。 Figure 1 shows the different types of frame integration and frame bursting schemes proposed by TGnSync, WwiSE or both. The integration scheme can be roughly differentiated based on its integrated package parts.
媒體存取控制(MAC)服務資料單元(MSDUs)整合(100)可整合一或更多媒體存取控制服務資料單元102以形成一整合媒體存取控制服務資料單元(A-MSDU)104,各媒體存取控制服務資料單元係藉由子訊框標頭106分隔。媒體存取控制標頭108係被添加至整合媒體存取控制服務資料單元以形成單媒體存取控制協定資料單元(MPDU)110。 Media Access Control (MAC) Service Data Unit (MSDUs) integration (100) may integrate one or more multimedia access control service data units 102 to form an integrated media access control service data unit (A-MSDU) 104, each The media access control service data unit is separated by a sub-frame header 106. A media access control header 108 is added to the integrated media access control service data unit to form a single media access control protocol data unit (MPDU) 110.
媒體存取控制協定資料單元整合(120)可整合一或更多媒體存取控制協定資料單元122以形成一單整合媒體存取控制協定資料單元(A-MPDU)124,各媒體存取控制協定資料單元係藉由媒體存取控制協定資料單元定界符 126分隔。包含一固有訓練及信號(SIGNAL)欄位130及一HT訓練及信號欄位132之實體(PHY)標頭128,係被添加至整合媒體存取控制協定資料單元124以形成一實體協定資料單元(PPDU)134。 The media access control protocol data unit integration (120) may integrate one or more multimedia access control protocol data units 122 to form a single integrated medium access control protocol data unit (A-MPDU) 124, each media access control protocol. Media access control protocol data unit delimiter 126 separated. A physical (PHY) header 128 including an inherent training and signal (SIGNAL) field 130 and an HT training and signal field 132 is added to the integrated media access control protocol data unit 124 to form a physical agreement data unit. (PPDU) 134.
實體協定資料單元整合(140)可整合一或更多實體協定資料單元142,各實體協定資料單元係包含一實體標頭144及一媒體存取控制協定資料單元146。包含一固有訓練及信號欄位150及一HT訓練及信號欄位152之實體標頭148,係被添加以形成一單整合實體協定資料單元(A-PPDU)154。 The entity agreement data unit integration (140) may integrate one or more entity agreement data units 142, each entity agreement data unit including an entity header 144 and a media access control agreement data unit 146. An entity header 148 including an inherent training and signal field 150 and an HT training and signal field 152 is added to form a single integrated entity agreement data unit (A-PPDU) 154.
亦已知為高產量(HTP)叢發傳輸之實體協定資料單元叢發(160)係涉及藉由單高產量站台(STA)以單媒體存取傳送訊框162序列。各訊框162包含一實體標頭164,具有一固有訓練及信號欄位166及一HT訓練及信號欄位168,及一媒體存取控制協定資料單元170。訊框162可被傳送為部分整合實體協定資料單元,或具減低訊框際間隔(RIFS)172來增強媒體效率。 The physical agreement data unit burst (160), also known as high throughput (HTP) burst transmission, involves a single medium access frame 162 sequence by a single high throughput station (STA). Each frame 162 includes an entity header 164 having an inherent training and signal field 166 and an HT training and signal field 168, and a media access control protocol data unit 170. Frame 162 can be transmitted as a partially integrated physical agreement data unit, or with reduced inter-frame spacing (RIFS) 172 to enhance media efficiency.
整合或叢發方案係可支援被預定傳送至單接收器(也就是單無線區域網路目的地)之整合訊框,被預定傳送至多接收器(也就是多無線區域網路目的地)之整合訊框,或兩者。SRA係被用來稱呼單接收器整合,而MRA係被用來稱呼多接收器整合。例如,因為媒體存取控制服務資料單元整合方案僅包含可識別單無線區域網路接收器位址之一媒體存取控制位址,所以其通常被用於單接收器整合。另一方面,因為整合或叢發內之各媒體存取控制協定資料單元包含可識別不同無線區域網路接收器位址之一媒體存取控制位址,所以媒體存取控制協定資料單元整合,實體協定資料單元整合及實體協定資料單元之叢發方案,係可被用於單接收器整合或多接收器整合。 The integration or bursting scheme supports the integration of frames that are scheduled to be delivered to a single receiver (ie, a single wireless local area network destination) that is scheduled to be transmitted to multiple receivers (ie, multiple wireless local area network destinations). Frame, or both. SRA is used to refer to single receiver integration, while MRA is used to refer to multi-receiver integration. For example, because the media access control service data unit integration scheme only contains one of the media access control addresses that identify the single wireless local area network receiver address, it is typically used for single receiver integration. On the other hand, since the media access control protocol data units in the integration or burst contain media access control addresses that can identify one of the different wireless local area network receiver addresses, the media access control protocol data unit is integrated, The physical agreement data unit integration and the entity agreement data unit clustering scheme can be used for single receiver integration or multi-receiver integration.
訊框整合及叢發方案具有增加無線區域網路系統效率及總產出之效益。缺點係大部分訊框整合及叢發方案對節省功率/電池並不支援/友善。主要問題係整合訊框及叢發持續期間相當長。所以若有關何站台之資料(也就 是何無線區域網路目的地位址)被包含於整合訊框及叢發內之知識不被事先提供,則無線區域網路內之各站台必須接收及解碼全部整合訊框或叢發以檢查訊框或叢發是否包含被用定傳送至站台之某些資料。 Frame integration and bursting schemes have the added benefit of increasing the efficiency and total output of wireless LAN systems. The disadvantage is that most of the frame integration and bursting schemes are not support/friendly for saving power/battery. The main problem is that the integrated frame and the burst are quite long. So if you have information about the platform (also If the wireless local area network destination address is included in the integrated frame and the burst is not provided in advance, each station in the wireless local area network must receive and decode all the integrated frames or bursts to check the message. Whether the box or burst contains certain data that is transmitted to the station.
接收及解碼該冗長封包資訊之動作係消耗該站台之接收器大量能量,若該接收站台具有若干標示其不應傾聽(接收及解碼)若並非預期接收器之特定整合訊框或叢發之事先知識,則可明顯節省功率/電池。 The act of receiving and decoding the lengthy packet information consumes a large amount of energy from the receiver of the station, if the receiving station has a number of indications that it should not listen (receive and decode) if the specific integrated frame or burst of the receiver is not expected Knowledge can save significant power/battery.
藉由提供何站台具有整合訊框或叢發內之資料相關事先知識,所有不具有整合訊框或叢發內之資料之站台均可藉由整合訊框或叢發持續期間沉睡(也就是不傾聽或不解碼全部封包)來節省功率。另一方面,若某些更多事先資訊被提供,則具有整合訊框或叢發內之資料之站台係可節省功率。該事先資訊係有關整合訊框或叢發內之站台之資料傳輸時點。基本概念係該站台於包含其資料之整合訊框或叢發部份期間使用事先時點資訊來喚醒(傾聽及解碼)並於不包含其資料之剩餘部份期間沉睡,藉此降低其功率消耗。 By providing the platform with the prior knowledge of the information in the integrated frame or burst, all stations that do not have the information in the integrated frame or burst can sleep during the duration of the integrated frame or burst (ie no Listen or not decode all packets to save power. On the other hand, if some more prior information is provided, the platform with integrated information or data in the bursts can save power. The prior information is about the point in time when the data is transmitted in the integrated frame or in the burst. The basic concept is that the station uses the prior-time information to wake up (listen and decode) during the integration frame or bursts containing its data and to sleep during the remainder of the data, thereby reducing its power consumption.
先前技術中,具有若干支援功率/電池節省之提議。如第2圖所示,TgnSync提案之整合媒體存取控制協定資料單元整合方案200提議使用多接收器整合描述符(MRAD)當作被預定傳送至多接收器之整合訊框內之第一媒體存取控制協定資料單元(整合媒體存取控制協定資料單元)。實體協定資料單元202係包含一實體標頭204及一整合媒體存取控制協定資料單元206。實體標頭204包含一固有訓練及信號欄位208及一HT訓練及信號欄位210。整合媒體存取控制協定資料單元206包含一多接收器整合描述符媒體存取控制協定資料單元212及各被媒體存取控制協定資料單元定界符216分隔之複數媒體存取控制協定資料單元214。 In the prior art, there were several proposals to support power/battery savings. As shown in FIG. 2, the integrated media access control protocol data unit integration scheme 200 of the TgnSync proposal proposes to use the Multi-Receiver Integration Descriptor (MRAD) as the first media storage in the integrated frame scheduled to be transmitted to the multi-receiver. Take the Control Agreement Data Unit (Integrated Media Access Control Protocol Data Unit). The entity agreement data unit 202 includes an entity header 204 and an integrated media access control protocol data unit 206. The entity header 204 includes an inherent training and signal field 208 and an HT training and signal field 210. The integrated media access control protocol data unit 206 includes a multi-receiver integration descriptor media access control protocol data unit 212 and a plurality of media access control protocol data units 214 separated by media access control protocol data unit delimiters 216. .
多接收器整合描述符媒體存取控制協定資料單元212係被用於以下方式。不具有整合訊框或叢發內之資料之站台將接收及解碼直到多接收器整 合描述符媒體存取控制協定資料單元212結束為止,而站台可得知其接收器位址並不被包含於多接收器整合描述符內,其可沉睡(也就是去能其接收器)直到整合訊框結束為止。因為TgnSync要求被預定傳送至相同接收器位址之媒體存取控制協定資料單元必須被彼此彼鄰放置於整合媒體存取控制協定資料單元內,所以具有整合訊框內之資料之站台將接收及解碼資料直到其接收所有其媒體存取控制協定資料單元及偵測下一媒體存取控制協定資料單元中之不同接收器位址為止,其可於該點上沉睡(也就是去能其接收器)直到整合訊框結束為止。 The multi-receiver integration descriptor media access control protocol data unit 212 is used in the following manner. Stations that do not have integrated frames or bursts of data will receive and decode until multiple receivers The descriptor media access control protocol data unit 212 ends, and the station can know that its receiver address is not included in the multi-receiver integration descriptor, which can sleep (ie, can get its receiver) until The integration frame ends. Since TgnSync requires that the MG data units scheduled to be transmitted to the same receiver address must be placed next to each other in the Integrated Media Access Control Protocol data unit, the station with the information in the integrated frame will receive and Decoding data until it receives all of its Media Access Control Protocol data units and detects different receiver addresses in the next Media Access Control Protocol data unit, which can sleep at that point (ie, can go to its receiver) ) until the end of the integration frame.
即使多接收器整合描述符機構提供達成整合媒體存取控制協定資料單元為基礎之多接收器整合例中節省功率之方法,但多接收器整合描述符機構適用於單速率多接收器整合,而不足以適用於多速率多接收器整合(其中整合媒體存取控制協定資料單元被以不同速率傳送),用於實體協定資料單元整合,不適用於實體協定資料單元叢發。 Even though the multi-receiver integration descriptor mechanism provides a means of conserving power in a multi-receiver integration example based on the integrated media access control protocol data unit, the multi-receiver integration descriptor mechanism is suitable for single-rate multi-receiver integration, and Not enough for multi-rate multi-receiver integration (where integrated media access control protocol data units are transmitted at different rates) for entity contract data unit integration, not for entity agreement data unit bursts.
一提案說明多速率(或多MCS)多接收器整合(MMRA),其係有關多速率多接收器整合被使用時支援功率節省。該提案包含使用具有站台識別符(也就是接收器位址)資訊及時點偏移資訊之多速率多接收器整合描述符(MMRAD),其可被用於功率節省。多速率多接收器整合描述符係被定義於訊框之媒體存取控制部分內,而訊框之實體部分內之單位元(明定位於HT-SIG欄位內)係被用來標示多速率多接收器整合描述符之出現。 One proposal illustrates multi-rate (or multi-MCS) multi-receiver integration (MMRA), which supports power savings when multi-rate multi-receiver integration is used. The proposal includes a Multi-Rate Multi-Receiver Integration Descriptor (MMRAD) that uses site identifier (i.e., receiver address) information and point-to-point offset information, which can be used for power savings. The multi-rate multi-receiver integration descriptor is defined in the media access control part of the frame, and the unit cell in the physical part of the frame (located in the HT-SIG field) is used to indicate multi-rate multi-rate. The presence of the receiver integration descriptor.
先前技術提案係承受許多缺點,如多接收器整合描述符或多速率多接收器整合描述符長度很大且無效率,其為可變長度欄位,而僅可藉由使用固定長度封包被簡化。亦因該大欄位,功率節省資訊無法被嵌入應被維持小尺寸之實體層內。因為功率節省資訊被以媒體存取控制位準傳送,所以其因多接收器整合描述符被以並非所有站台均可解碼之速率傳送而不十分 強固。其亦為媒體存取***體存取控制協定資料單元,所以若其遺失或若站台不能正確解碼它,則不能節省功率。另一缺點係時點資訊不被以效率方式提供。目前提案大部份應用整合媒體存取控制協定資料單元整合,而無法以整合實體協定資料單元整合,實體協定資料單元叢發,多速率多接收器整合或反向訊務效率地及強固地運作。 Prior art proposals suffer from a number of shortcomings, such as multi-receiver integration descriptors or multi-rate multi-receiver integration descriptors that are large and inefficient, which are variable length fields and can only be simplified by using fixed length packets. . Also due to this large field, power saving information cannot be embedded in the physical layer that should be maintained in a small size. Since the power saving information is transmitted at the media access control level, it is transmitted at a rate that is not decodable by all stations because the multi-receiver integration descriptor is transmitted. strong. It is also a media access control media access control protocol data unit, so if it is lost or if the station cannot correctly decode it, then power cannot be saved. Another disadvantage is that point-in-time information is not provided in an efficient manner. Most of the current proposals use integrated media access control protocol data unit integration, which cannot be integrated by integrated entity agreement data unit, entity agreement data unit cluster, multi-rate multi-receiver integration or reverse traffic operation efficiently and firmly .
本方法可應用至訊框整合方案,訊框叢發方案,及不被整合之訊框(也就是如被傳送至單接收器者)。本發明不限於功率及電池節省,亦可被用於其他目的,如經由簡化群組定址提供定址可度量性,用於封包排程器設計或實施,或用於各種無線資源管理功能性。 The method can be applied to a frame integration scheme, a frame bursting scheme, and a frame that is not integrated (ie, if transmitted to a single receiver). The invention is not limited to power and battery savings, and can be used for other purposes, such as providing address measurability via simplified group addressing, for packet scheduler design or implementation, or for various radio resource management functionality.
一種無線通信系統中站台群組定址方法係以分派系統中之站台為若干群組作為開始。群組識別符係被傳送至各站台,而該群組識別符係針對該訊框中具有資料之各群組被標示於訊框中。 A station group addressing method in a wireless communication system starts with a group of stations in a dispatch system. The group identifier is transmitted to each station, and the group identifier is marked in the frame for each group having data in the frame.
一種促進無線通信系統功率節省之方法係以分派系統中之站台為若干群組作為開始。群組識別符係被傳送至各站台,而該群組識別符係針對該訊框中具有資料之各群組被標示於訊框中。若站台之群組識別符不出現於訊框中,則站台進入功率節省模式藉此節省功率。 One method of facilitating power savings in a wireless communication system begins with a group of stations in the dispatch system. The group identifier is transmitted to each station, and the group identifier is marked in the frame for each group having data in the frame. If the group identifier of the station does not appear in the frame, the station enters the power saving mode to save power.
一種促進無線通信系統功率節省之方法係以標示訊框中訊務方向,該訊務方向標示訊框目的地作為開始。若訊務方向不對著站台,則站台進入功率節省模式藉此節省功率。 One method of facilitating power savings in a wireless communication system is to indicate the direction of the traffic in the frame, which is indicated by the destination of the message. If the traffic direction is not opposite the station, the station enters the power save mode to save power.
一種促進無線通信系統功率節省之方法係以站台處接收及解碼訊框,直到站台解碼功率節省標示器為止作為開始。若該功率節省標示器標示站 台可使用功率節省模式,則站台進入功率節省模式。 One method of facilitating power savings in a wireless communication system is to start and decode the frame at the station until the station decodes the power saver. If the power saver marker indicates the station The station can use the power saving mode, and the station enters the power saving mode.
一種促進無線通信系統功率節省之方法係以傳送時點資訊至訊框中之站台,該時點資訊佔用一部分訊框作為開始。該站台係以該時點資訊為基礎進入功率節省模式。該站台係以該時點資訊為基礎離開功率節省模式,並於離開功率節省模式之後接收及解碼一部分訊框。 One method of facilitating power saving in a wireless communication system is to transmit time point information to a station in the frame, at which point the information occupies a portion of the frame as a start. The station enters the power saving mode based on the information at the time. The station leaves the power saving mode based on the information of the time point, and receives and decodes a part of the frame after leaving the power saving mode.
一種促進無線通信系統功率節省之方法係以提供傾聽指示給訊框,該傾聽指示包含有多少訊框將被非該訊框之預期接收器之站台解碼之標示作為開始。該傾聽指示係被包含於訊框中,其係被傳送至站台。訊框係被接收於站台處,而傾聽指示係被解碼。訊框係以該傾聽指示為基礎被解碼於站台處,其中該站台係於解碼該傾聽指示所標示之該部份訊框之後進入功率節省模式,該站台藉此節省功率。 One method of facilitating power savings in a wireless communication system is to provide a listening indication to the frame, the listening indication including how many frames will begin with an indication of the station decoding of the intended receiver of the frame. The listening indication is included in the frame and is transmitted to the station. The frame is received at the station and the listening indication is decoded. The frame is decoded at the station based on the listening indication, wherein the station enters a power saving mode after decoding the partial frame indicated by the listening indication, and the station thereby saves power.
一種促進無線通信系統功率節省之方法係以從站台傳送第一訊框至存取點,包含來自該站台退出傳輸類型之要求作為開始。至少一第二訊框從該存取點被傳送。第二訊框被接收於站台處,其可解碼該第二訊框之傳輸類型。若該第二訊框之傳輸類型係為該站台已退出之傳輸類型,則該站台進入功率節省模式。 One method of facilitating power savings in a wireless communication system begins with the transmission of the first frame from the station to the access point, including the request to exit the transmission type from the station. At least one second frame is transmitted from the access point. The second frame is received at the station, which can decode the transmission type of the second frame. If the transmission type of the second frame is the transmission type of the station that has exited, the station enters the power saving mode.
AP‧‧‧存取點 AP‧‧‧ access point
CRC‧‧‧週期冗餘檢查 CRC‧‧‧cycle redundancy check
GROUP‧‧‧群組 GROUP‧‧‧Group
GI‧‧‧群組資訊 GI‧‧‧Group Information
GPI‧‧‧群組出現(或不出現)標示器 GPI‧‧‧ group appears (or does not appear) marker
GTI‧‧‧群組時點資訊 GTI‧‧‧ group time information
GPTI‧‧‧群組出現及時點資訊 GPTI‧‧‧ groups have timely information
LDI‧‧‧傾聽方向或指示 LDI‧‧‧ Listening directions or instructions
MAC‧‧‧媒體存取控制 MAC‧‧‧Media Access Control
MSDU‧‧‧服務資料單元 MSDU‧‧‧Service Data Unit
MPDU‧‧‧單媒體存取控制協定資料單元 MPDU‧‧‧Single Media Access Control Protocol Data Unit
MCS‧‧‧調變編碼方案 MCS‧‧‧ modulation coding scheme
PPDU‧‧‧實體協定資料單元 PPDU‧‧‧ entity agreement data unit
PVF‧‧‧出現或有效性旗幟 PVF‧‧‧ emergence or effectiveness banner
PHY‧‧‧實體 PHY‧‧‧ entity
SD‧‧‧誆騙持續時間 SD‧‧‧deception duration
STA‧‧‧站台 STA‧‧‧ Platform
SIG‧‧‧信號 SIG‧‧‧ signal
從以下較佳實施例及附圖說明可獲得本發明更詳細理解,其中:第1圖為若干既存訊框整合及叢發方案圖示;第2圖為使用多接收器整合描述符之既存媒體存取控制協定資料單元整合方案圖示;第3圖為分組站台及與存取點通信之群組圖示; 第4圖為使用與時點資訊及站台沉睡期間連接之群組識別符資訊例;第5A圖為既存TgnSync實體標頭中之固有實體層匯聚協定(PLCP)標頭圖示;第5B圖為包含訊框類型標示器之固有實體層匯聚協定標頭圖示;第6A圖為既存TgnSync實體標頭中之既存HT-SIG欄位圖示;第6B圖為包含HT-SIGX欄位之HT-SIG欄位圖示;第7A圖為WWiSE實體標頭中之既存信號-MM及信號-N欄位圖示;及第7B圖為包含附加資訊欄位之信號-MM及信號-N欄位圖示。 A more detailed understanding of the present invention can be obtained from the following description of the preferred embodiments and the accompanying drawings, wherein: FIG. 1 is a diagram showing a plurality of existing frame integration and bursting schemes; and FIG. 2 is an existing medium using a multi-receiver integration descriptor An access control protocol data unit integration scheme diagram; FIG. 3 is a group diagram of the group station and the communication point with the access point; FIG. 4 is an example of group identifier information connected using the time point information and the platform sleep period; Figure 5A is a diagram of the inherent physical layer convergence protocol (PLCP) header in the existing TgnSync entity header; Figure 5B is an illustration of the intrinsic physical layer aggregation protocol header containing the frame type marker; Figure 6A is the existing An existing HT-SIG field in the TgnSync entity header; Figure 6B shows the HT-SIG field in the HT-SIG X field; Figure 7A shows the existing signal in the WWiSE entity header -MM and Signal-N field diagram; and Figure 7B is a signal-MM and signal-N field diagram containing additional information fields.
此後,”站台”(STA)名詞係包含但不限於使用者設備,無線傳輸/接收單元,固定或行動用戶單元,呼叫器,或可操作於無線環境中之任何其他類型元件。此後被稱為”存取點(AP)”者係包含但不限於B節點,基地台,位址控制器,或無線環境中之任何其他接介裝置。 Thereafter, "STA" (STA) nouns include, but are not limited to, user equipment, wireless transmission/reception units, fixed or mobile subscriber units, pagers, or any other type of component operable in a wireless environment. The term "access point (AP)" is used to include, but is not limited to, a Node B, a base station, an address controller, or any other interface device in a wireless environment.
本發明可應用至各種不同技術,包含整合訊框,非整合訊框,反向方案,如多回應多接收器整合(MRMRA)之多回應器方案,反向訊務,多輪詢及多回應多接收器整合多輪詢(MMP)。因此,本發明所定義之功率節省範圍係可涵蓋單獨,不被整合,或單接收器整合之訊框,所有被整合訊框或叢發類型,及所有具有多回應器或使用多輪詢之方案。 The invention can be applied to a variety of different technologies, including integrated frames, non-integrated frames, reverse solutions, such as multiple response multi-receiver integration (MRMRA) multiple responder solutions, reverse traffic, multiple polling and multiple responses Multiple receivers integrate multiple polling (MMP). Therefore, the power saving range defined by the present invention can cover separate, unintegrated, or single receiver integrated frames, all integrated frame or burst types, and all have multiple responders or use multiple polls. Program.
本發明提供效率定址站台群組之方法。因為如實體層標頭之有限尺寸標頭需許多位元組,所以定址無線區域網路站台目前技術方案並不有效用於它們。基本上,目前無線區域網路系統及方法並不能效率定址實體層或甚至媒體存取控制層處之站台。 The present invention provides a method of efficiently addressing a group of stations. Because the finite-size headers of the physical layer headers require many bytes, the current technical solutions for addressing wireless local area network stations are not effectively used for them. Basically, current wireless local area network systems and methods do not efficiently address stations at the physical layer or even the medium access control layer.
本發明提出可群組定址站台,且可被用於有限尺寸之無線區域網路標頭之新效率方案。此群組定址可被各種效能增強功能使用,如功率節省,無線資源管理,改良服務品質(QoS),及封包排程(封包排程器設計及實施)。當站台數足夠小時,其亦可被用來唯一識別最後訊務目的地(如接收無線區域網路站台)。無線區域網路中,效率定址可藉由使存取點組織正在服務之站台(如被與存取點連結之這些站台)為不同群組,各群組可包含多站台來達成。”功率節省群組”,”站台群組”,或”位址群組”名詞係可被用來稱呼該群組。 The present invention proposes a group addressable station and can be used for a new efficiency scheme for a limited size wireless area network landmark. This group addressing can be used by various performance enhancements such as power savings, radio resource management, improved quality of service (QoS), and packet scheduling (packet scheduler design and implementation). When the number of stations is small enough, it can also be used to uniquely identify the last traffic destination (such as receiving a wireless local area network station). In a wireless local area network, efficient addressing can be achieved by having the access point organization a station that is being served (such as those connected to the access point) as a different group, and each group can include multiple stations. A "power saving group", "stairs group", or "address group" noun can be used to refer to the group.
雖然無線區域網路站台通常藉由其媒體存取控制位址被唯一識別,但效強增強及功率節省亦可不需明定站台之全部媒體存取控制位址或部分媒體存取控制位址即可被達成。此外,”群組位址”,”群組識別符”,”群組標示器”或”群組號”係可被用來促進功率節省。如第3圖例,假設存取點300可能組織正在服務之六站台(302-312)為四個群組。一可能性係存取點300分派站台#1(302)及#6(312)至群組1,站台#2(304)至群組2,站台#4(308)及#5(310至群組3,及站台#3(306)至群組4。存取點300亦可將一站台放入多群組中。第3圖中,站台#5(310)及#6(312)兩者署於群組1及群組3。 Although the wireless local area network station is usually uniquely identified by its media access control address, the enhancement and power saving can be performed without specifying all the media access control addresses or partial media access control addresses of the station. Was reached. In addition, "group address", "group identifier", "group marker" or "group number" can be used to facilitate power savings. As in the third example, assume that the access point 300 may organize the six stations (302-312) being served into four groups. One possibility is that the access point 300 assigns stations #1 (302) and #6 (312) to group 1, station #2 (304) to group 2, station #4 (308) and #5 (310 to group) Group 3, and station #3 (306) to group 4. Access point 300 can also place one station into multiple groups. In Figure 3, stations #5 (310) and #6 (312) Organized in Group 1 and Group 3.
一旦存取點300決定分派站台至一個或更多群組,則其可使用任何訊息型式發送該被分派群組或群組信號至該站台。例如,當站台#6(312)被與存取點300連結且一旦存取點已決定分派或分類站台#6為群組1部分時,存取點可使用管理訊框,動作訊框,控制訊框或資料訊框來標示站台#6其已被分派至群組1。該信號傳送可以各種方式被引導,如藉由引進新欄位於連結或再連結訊框內;既存管理或動作訊框(如被用於阻隔確認(ACK)設立,訊務流設立,或直接鏈結協定(DLP)設立者);如確認,阻隔確認要求(BAR)及阻隔確認(BA),啟動器整合控制(IAC)/回應器整合控制(RAC),調變編碼 方案(MCS)要求及調變編碼方案回授;及資料訊框。 Once the access point 300 decides to dispatch the station to one or more groups, it can send the assigned group or group signal to the station using any message pattern. For example, when station #6 (312) is connected to access point 300 and once the access point has decided to assign or classify station #6 to group 1 part, the access point can use the management frame, action frame, control A frame or data frame to indicate that station #6 has been assigned to group 1. The signal transmission can be directed in a variety of ways, such as by introducing a new column in a link or re-link frame; an existing management or action frame (such as being used for blocking confirmation (ACK) setup, traffic flow setup, or direct chaining) Agreement (DLP) set-up;; confirmation, Barrier Confirmation Request (BAR) and Barrier Confirmation (BA), Initiator Integration Control (IAC)/Responder Integrated Control (RAC), Modulation Coding Program (MCS) requirements and modulation coding scheme feedback; and information frame.
某些類確認(回授)可被使用,藉此站台可確認其已正確接收其新群組分派。群組分派及其隨後確認(經由回授或確認)可於任何既存無線區域網路訊框內或藉由定義新訊框被傳送訊息。存取點係可自力將本身歸類為特殊群組部分,無群組部分,可包含其他站台之任何群組部分,或每群組部分。存取點亦可將其被分派群組與被連結站台通信。 Certain class acknowledgments (returns) can be used whereby the station can confirm that it has correctly received its new group assignment. The group component and its subsequent confirmation (via feedback or confirmation) can be transmitted in any existing wireless area network frame or by defining a new frame. The access point can be self-reliant to classify itself as a special group part, no group part, and can include any group part of other stations, or each group part. The access point can also communicate its assigned group with the connected station.
存取點可屬於所有站台均留意之預設群組(如固定值)(如被所有0及1識別之群組;第3圖中,存取點屬於群組0。尚未被存取點分派入群組之站台係可假設其被預設為所有可能群組部分(如站台屬於每群組直到其被分派入特定群組為止)。同時,直接鏈結設立或直接鏈結協定(DLS或DLP)特定脈絡內,存取點可傳送當直接與另一站台對話時其應使用之群組識別符(也就是何者應為其他站台被分派入之群組)或替代性可針對該目的被使用之預設群組至站台。 The access point may belong to a preset group (such as a fixed value) that all stations are aware of (such as a group identified by all 0s and 1s; in Figure 3, the access point belongs to group 0. It has not been dispatched by the access point. The station system of the group can be assumed to be preset to all possible group parts (eg, the station belongs to each group until it is assigned to a specific group). At the same time, direct link establishment or direct link agreement (DLS or DLP) Within a particular context, an access point may transmit a group identifier (ie, which group should be assigned to another station) when it is directly in conversation with another station or alternatively may be targeted for that purpose. Use the preset group to the station.
群組分派,再分派或信號傳送係可被引導於存取點或站台視為必要之任何時點處,且不限於如協議或連結之特定階段。靜態分派亦可被使用,藉此操作者或使用者可配置或組織該站台或存取點為必要群組,且將該資訊輸入該站台或存取點。同時,被分派演算法可被設計用於分派,藉此站台可使用無或少許明確通信/信號傳送自力將本身分派入一群組。 The group component, redistribution or signaling system can be directed at any point in time that the access point or station is deemed necessary, and is not limited to a particular phase such as a protocol or link. Static assignments can also be used whereby the operator or user can configure or organize the station or access point as a necessary group and enter the information into the station or access point. At the same time, the dispatched algorithm can be designed for dispatching, whereby the station can assign itself to a group using no or little explicit communication/signaling.
多維度群組係可被定義,其可被解釋為具有群組內之次群組。例如,站台可被分派至群組1及子群組2。子群組概念係有用於屬於相同群組之多站台間之區分。例如,若群組1包含三站台,而群組1內具有四個可用子群組,則該三站台各可被放入不同子群組,藉此提供群組內之站台間進一步區分。因此,更通用例係分派一個或更多值至站台,各值代表一群組,一群組內之一子群組,及一子群組內之一子子群組。更通用例係具有N維 度群組,其可藉由N重序元(g1,g2,...,gN)被識別,而站台將被分派N值,一值用於各N維度(也就是群組組合)。 Multi-dimensional groupings can be defined, which can be interpreted as having subgroups within a group. For example, a station can be assigned to group 1 and subgroup 2. The subgroup concept has a distinction between multiple stations belonging to the same group. For example, if group 1 contains three stations and group 1 has four available sub-groups, the three stations can each be placed in different sub-groups, thereby providing further differentiation between stations within the group. Thus, a more general example assigns one or more values to a station, each value representing a group, a subgroup within a group, and a subsubgroup within a subgroup. More general case with N dimension A degree group, which can be identified by N repeating elements (g1, g2, ..., gN), and the station will be assigned an N value, one value for each N dimension (ie, a group combination).
群組亦可藉由考慮其他特性被定義。例如,一群組係可識別廣播訊務是否被包含於訊框內且有效包含存取點涵蓋區域內之所有站台。若存取點想傳送包含廣播訊務及屬於群組2之訊務之整合訊框,則其可使用群組0來標示具有被預定傳送至所有站台之廣播訊務,且可使用群組2來標示具有用於群組2中至少一站台之訊務。此概念特別有用於整合訊框內之資料藉由訊務類型排序時;例如,廣播訊務及/或多點傳遞訊務於整合訊框內單點傳遞訊務之前被放置。廣播群組可被用來表示資料類型係為被預定傳送至所有站台之廣播訊務。 Groups can also be defined by considering other characteristics. For example, a group can identify whether broadcast traffic is included in the frame and effectively includes all stations within the coverage area of the access point. If the access point wants to transmit an integrated frame containing broadcast traffic and traffic belonging to group 2, it can use group 0 to indicate that the broadcast service is scheduled to be transmitted to all stations, and can use group 2 To indicate that there is traffic for at least one of the stations in group 2. This concept is particularly useful when the information in the integrated frame is sorted by the type of traffic; for example, broadcast traffic and/or multi-drop traffic is placed before the single-point delivery of traffic within the integrated frame. The broadcast group can be used to indicate that the data type is a broadcast service that is scheduled to be transmitted to all stations.
類似概念係可應用於多點傳遞訊務,具有標示多點傳遞訊務之一個或更多群組。一群組可標示廣播及多點傳遞訊務是同時或任一出現於訊框內(也就是單群組呈現廣播或多點傳遞)。訊框類型資訊可被用於定義該群組。例如,一群組可被用於訊框之管理,動作或控制類型。另外,服務品質相關資訊可被用於定義群組時。 A similar concept can be applied to multipoint delivery traffic with one or more groups that indicate multipoint delivery traffic. A group can indicate that the broadcast and multi-point delivery services are simultaneously or in any of the frames (ie, a single group presentation broadcast or multi-point delivery). Frame type information can be used to define the group. For example, a group can be used for frame management, action or control type. In addition, service quality related information can be used when defining a group.
具有可被用於組織站台及/或不同訊務類型為可用群組之許多可能演算法。一演算法係使用記憶體表指標位元子組(如隨機存取記憶體表),包含該站台之媒體存取控制位址之該入口係被放置其中。因為存取點可能維持其相關站台之媒體存取控制位址之查找表,所以存取點可使用其中站台之媒體存取控制位址被儲存於隨機存取記憶體表中之表指標之最小影響性位元。第二演算法係應用雜湊函數於站台之媒體存取控制位址(及若預期之站台及訊務其他特性)。第三演算法係對各群組(或其站台)監視(測量)負載(也就是訊務使用),並以所有群組間產生近似均等負載之方式動態改變該群組分派。第四演算法選擇最小使用群組(以訊務使用)來分派至最新相關站台。 其他演算法係包含嘗試分割/平衡所有群組間之負載/使用,及考慮其他因子,如封裝/分組具有類似訊框整合要求,使用類似資料速率或功率位準,或具有類似服務品質或無線資源管理要求之相同群組內之這些站台。 There are many possible algorithms that can be used to organize stations and/or different traffic types as available groups. An algorithm uses a memory table indicator bit subgroup (such as a random access memory table), and the entry system containing the media access control address of the station is placed therein. Because the access point may maintain a lookup table of media access control addresses of its associated stations, the access point may use the smallest of the table indicators in which the media access control address of the station is stored in the random access memory table. Influential bits. The second algorithm is to apply the hash function to the media access control address of the station (and other characteristics of the expected station and traffic). The third algorithm monitors (measures) the load (ie, traffic usage) for each group (or its platform) and dynamically changes the group assignment in such a way that approximately equal load is generated between all groups. The fourth algorithm selects the minimum usage group (used by the traffic) to be assigned to the latest relevant station. Other algorithms include attempting to split/balance the load/use between all groups, and considering other factors such as encapsulation/packet with similar frame integration requirements, using similar data rates or power levels, or having similar quality of service or wireless These stations within the same group required by resource management.
如上述,管理,動作,控制或資料訊框係可被用於傳送被分派群組信號至站台,另一站台之群組或存取點之群組。例如,啟動器整合控制/回應器整合控制,RTS/CTS,調變編碼方案要求及回授,阻隔確認要求/阻隔確認,連結/再連結要求及回應訊框,或CF輪詢或服務品質輪詢係可被用於該信號傳送目的。該信號傳送可包含群組分派訊息,其包含可標示此為群組分派訊息之一旗幟,及最新被分派群組之值(被編碼為點陣圖或其他型式)。分派訊息亦可包含被分派群組範圍之資訊,例如該被分派群組是否可應用於此站台,存取點或另一站台(如直接鏈結協定時)。 As described above, a management, action, control or data frame can be used to transmit a grouped group signal to a station, a group of other stations or a group of access points. For example, starter integrated control/responder integration control, RTS/CTS, modulation coding scheme requirements and feedback, blocking confirmation request/blocking confirmation, link/relink request and response frame, or CF polling or service quality round The inquiry system can be used for this signal transmission purpose. The signaling may include a group assignment message containing a flag indicating that this is a group assignment message, and the value of the most recently assigned group (encoded as a bitmap or other pattern). The dispatch message may also contain information about the scope of the assigned group, such as whether the assigned group can be applied to the station, the access point or another station (such as when a direct link agreement).
一旦站台正確接收群組分派訊息,其可經由回到存取點之群組確認訊息確認其已被正確接收最新被分派群組。可替代是,站台可以非請求方式定期確認群組其可針對各不同通信範圍傳送群組確認或確認訊息。 Once the station correctly receives the group assignment message, it can confirm that it has been correctly received the latest assigned group via the group confirmation message back to the access point. Alternatively, the station can periodically confirm the group in an unsolicited manner that it can transmit group confirmation or confirmation messages for different communication ranges.
若不滿足目前被分派至之群組,則站台亦可要求群組再分派。例如,站台測量其電池位準,而若其電源短缺(也就是當特定門檻被交叉時),其可經由電源很低之訊息告訴存取點,且其可能要求群組再分派。站台可明確地包含其電池位準於該要求內。接收訊息時,存取點可決定否認或接受站台之要求且可分派該站台至新群組中。因為管理,動作,控制或資料訊框標示對存取點設計或組織其群組有用,所以站台可於協議,設立或任何信號傳送階段期間經由對存取點之該標示其是否具有使用功率節省群組資訊來節省功率之能力。 If the group currently assigned to the group is not satisfied, the station may also request the group to be reassigned. For example, a station measures its battery level, and if its power supply is short (that is, when a particular threshold is crossed), it can tell the access point via a very low power message and it may require the group to be reassigned. The station can explicitly include its battery level within this requirement. When receiving a message, the access point may decide to deny or accept the request of the station and may assign the station to the new group. Since the management, action, control or data frame designation is useful for the access point design or organization of its group, the station can indicate whether it has power usage savings over the access point during the protocol, setup or any signal transmission phase. Group information to save power.
被提出用於實現功率節省,簡化或可度量定址,排程訊框(排程器實施),任何無線資源管理功能,或任何其他效能增強功能之資訊屬類上係被稱為”功率節省群組資訊”。該資訊之使用不限於功率節省,而亦可被用於其他目的,如資料排程器實施;以類似整合要求(也就是可能被整合一起之這些訊框),類似資料速率,類似功率,或相同群組內之類似服務品質要求來分組站台;及各種無線資源管理功能。無線區域網路可使用之某些或所有訊框係可包含訊框標頭(實體或媒體存取控制標頭),訊框主體,或任何先前被傳送訊框(如RTS/CTS,啟動器整合控制/回應器整合控制,CF輪詢或服務品質輪詢)。功率節省群組資訊可包含一個或更多以下片段資訊。 A power saving group that is proposed for power savings, simplified or measurable addressing, scheduling frames (schedule implementation), any radio resource management function, or any other performance enhancement feature Group information". The use of this information is not limited to power savings, but can be used for other purposes, such as data scheduler implementation; similar integration requirements (that is, these frames that may be integrated together), similar data rates, similar power, or Similar service quality requirements within the same group to group stations; and various radio resource management functions. Some or all of the frames that can be used by the wireless local area network may include a frame header (physical or media access control header), a frame body, or any previously transmitted frame (such as RTS/CTS, initiator). Integrated control/responder integration control, CF polling or service quality polling). The power saving group information may include one or more pieces of the following pieces of information.
欄位(或位元)被當作旗幟(在此被稱為旗幟)來標示功率節省群組資訊至少一片段是否出現於訊框中(如訊框標頭內)。例如,出現或有效性旗幟可被用來標示訊框內是否具有功率節省資訊。每訊框被假設包含功率節省資訊之例中,該旗幟可能不必要。旗幟可被用於實施可變長度實體或媒體存取控制標頭欄位或標頭。 The field (or bit) is treated as a flag (herein referred to as a flag) to indicate whether at least one segment of the power saving group information appears in the frame (eg, within the frame header). For example, an appearance or validity flag can be used to indicate whether there is power saving information within the frame. In the case where each frame is assumed to contain power saving information, the flag may not be necessary. Flags can be used to implement variable length entities or media access control header fields or headers.
例如,旗幟可標示標頭延伸部分是否出現,其中該標頭延伸係包含所有或某些功率節省資訊。位元可被用於實體標頭信號欄位內(如HT-SIG欄位或信號-N欄位)來標示一(或更多)附加正交分頻多工符號被提供於HT-SIG欄位,而該附加正交分頻多工符號包含可提供所有或某些功率節省資訊之欄位。另一變異中,旗幟可被用來標示被包含於信號欄位之一般(強制)正交分頻多工符號內,而不需額外正交分頻多工符號之功率節省資訊欄位可用性或有效性。出現或有效性旗幟另一使用(如藉由使用另一位元)可標示功率節省群組資訊是否有效。 For example, the flag may indicate whether a header extension is present, wherein the header extension includes all or some of the power saving information. Bits can be used in the entity header signal field (eg HT-SIG field or signal -N field) to indicate that one (or more) additional orthogonal frequency division multiplex symbols are provided in the HT-SIG column. Bit, and the additional orthogonal frequency division multiplex symbol contains fields that provide all or some of the power saving information. In another variant, the flag can be used to indicate the general (mandatory) orthogonal frequency division multiplex symbol included in the signal field, without the need for additional orthogonal orthogonal frequency division multiplex symbols for power saving information field availability or Effectiveness. Another use of the presence or validity flag (eg, by using another bit) may indicate whether the power saving group information is valid.
訊框包含可識別訊框被預定傳送至之站台群組。群組出現(或不出現)標示器可應用至單獨訊框,整合訊框,叢發傳輸或訊框序列。例如,明定或編碼群組出現(或不出現)標示器資訊之一型式係藉由使用點陣圖(或幕罩)來達成。返回先前說明之四組例,群組出現(或不出現)標示器欄位可被定義為包含四位元(b1,b2,b3,b4),藉此2之值標示訊框是否包含被分派至群組2之至少一站台之資料。為了說明,當存取點傳送資料至作為群組2部分之單站台時,存取點可使用點陣圖0100來標示屬於群組2之站台具有出現於被傳送訊框中之某些資料,而該訊框並無包含屬於另外三群組之資料。 The frame contains a group of stations to which the identifiable frame is scheduled to be transmitted. The presence (or absence) of the marker can be applied to individual frames, integrated frames, burst transmissions or frame sequences. For example, a type of marker information that appears (or does not appear) in a defined or coded group is achieved by using a bitmap (or mask). Returning to the four sets of examples previously described, the group appearance (or non-occurrence) marker field can be defined to contain four bits (b1, b2, b3, b4), whereby the value of 2 indicates whether the frame contains the assigned Information to at least one station of group 2. To illustrate, when the access point transmits data to a single station that is part of group 2, the access point can use bitmap 0100 to indicate that the station belonging to group 2 has certain data that appears in the transmitted frame. The frame does not contain information belonging to the other three groups.
可替代是,群組可被定義使用規則編碼(如10)標示此訊框包含被預定傳送至屬於群組2之站台之資料。 Alternatively, the group can be defined using a rule code (e.g., 10) to indicate that the frame contains material that is scheduled to be transmitted to the station belonging to group 2.
另一例,當存取點使用整合訊框(如當使用服務資料單元整合,媒體存取控制協定資料單元整合,實體協定資料單元整合叢發,多速率多接收器整合,或多輪詢)傳送資料至站台時,0110點陣圖值係標示訊框包含群組2之至少一站台及群組3之至少一站台之資料,而該訊框不包含群組1或群組4之資料。應注意即使此例假設四群組,但任何群組號均可被使用且點陣圖被擴充容納被使用之群組號。再者,所使用之群組號係可被呈現為動態變數。群組出現(或不出現)標示器可被包含於訊框標頭,實體標頭,媒體存取控制標頭,實體標頭,媒體存取控制標頭,多接收器整合描述符,多回應多接收器整合多輪詢,或任何多輪詢訊框之信號欄位(固有信號,HT-SIG,或信號-N)內。 In another case, when the access point uses the integrated frame (such as when using service data unit integration, media access control protocol data unit integration, entity agreement data unit integration burst, multi-rate multi-receiver integration, or multi-polling) When the data is sent to the station, the 0110 dot matrix value indicates that the frame contains at least one station of group 2 and at least one station of group 3, and the frame does not include the data of group 1 or group 4. It should be noted that even if this example assumes four groups, any group number can be used and the bitmap is expanded to accommodate the used group number. Furthermore, the group number used can be presented as a dynamic variable. The group appears (or does not appear) marker can be included in the frame header, entity header, media access control header, entity header, media access control header, multi-receiver integration descriptor, multiple responses Multiple receivers integrate multiple polling, or any multi-round interrogation box within the signal field (intrinsic signal, HT-SIG, or signal-N).
多接收器整合例中,提供群組時點資訊可對被整合於訊框內之這些站 台節省較高功率。因為群組時點資訊仍可藉由使用群組出現(或不出現)標示器達成功率節省,所以非整合訊框部分之站台不需它們。 In the multi-receiver integration example, group point information is provided for the stations integrated in the frame. The station saves higher power. Since the group time information can still achieve power saving by using the group appearance (or not appearing) marker, the stations in the non-integrated frame part do not need them.
為了說明群組時點資訊如何被使用,考慮點陣圖值0110被用來標示整合訊框包含群組2中之至少一站台及群組3中之至少一站台之資料。假設給定群組之資料彼鄰於整合訊框內,則可識別群組2之資料開始之被傳送時間或附近,且亦識別群組2之資料開始之被傳送時間或附近之時點資訊係可被提供。 In order to explain how the group point information is used, it is considered that the bitmap value 0110 is used to indicate that the integrated frame contains at least one of the group 2 and at least one of the groups 3. Assuming that the data of a given group is adjacent to the integrated frame, the time at which the data of the group 2 starts to be transmitted or in the vicinity can be identified, and the time at which the data of the group 2 starts to be transmitted or the time information in the vicinity is also identified. Can be provided.
群組時點資訊可使群組讓資料沉睡(也就是不接收或解碼)直到該群組之資料第一片段被傳送之時點為止,因而達成其間功率節省。因為接收站台可沉睡,所以一旦其接收其資料及偵測整合訊框中下一片段資料中之接收器位址改變,功率節省即可被達成。 The group hour information allows the group to let the data sleep (ie, not receive or decode) until the first segment of the group's data is transmitted, thus achieving power savings therebetween. Since the receiving station can sleep, power saving can be achieved once it receives its data and detects the receiver address change in the next segment of the integrated frame.
為了提供群組時點資訊,訊框內各組開始時間(如時間偏移型式)係被提供。此資訊係為屬於屬於群組內任何站台之資料第一片段開始被傳送之時間點或附近。為了效率提供群組時點資訊,除了完全明定(編碼)各群組開始時間(或偏移時間),所有群組基礎持續時間(也就是基期)係可被使用,而識別開始時間(如時間偏移)之不同分數值係可被用於各群組。例如,假設基礎持續時間為16時間單元,則群組開始時間可藉由使用兩位元被編碼及通信為分數3/4,其意指群組開始時間(如群組時間偏移)為任一來自參考時點之(3/4×16=)12時間單元。 In order to provide group point information, the start time of each group in the frame (such as time offset type) is provided. This information is the point in time or near the beginning of the first segment of the data belonging to any station belonging to the group. In order to provide group point-in-time information for efficiency, in addition to fully specifying (encoding) the start time (or offset time) of each group, all group base durations (ie, base periods) can be used, and the recognition start time (such as time offset) The different score values of the shift can be used for each group. For example, assuming that the base duration is 16 time units, the group start time can be encoded and communicated as a score of 3/4 by using two digits, which means that the group start time (eg, group time offset) is A (3/4 x 16 =) 12 time unit from the reference time point.
基礎持續時間資訊可從無線區域網路訊框標頭內之既存欄位被導出。例如:實體標頭固有信號欄位內之速率(RATE)及長度(LENGTH)欄位;TgnSync訊框標頭之HT-SIG(信號)內之HTLENGTH及調變編碼方案欄位;或WWiSE訊框標頭之信號-N(信號)欄位內之長度及Config欄位可被用來導出基礎持續時間資訊。基礎持續相同於從實體層資訊被導出之誆騙持續時 間(SD)。使用該誆騙持續時間(或可從其被導出之任何變異)當作基礎持續時間係可提供編碼及時點(如偏移)資訊之效率方法。可替代是,媒體存取控制標頭之持續時間/識別符欄位係可被用來導出該基礎持續時間資訊。 The base duration information can be derived from existing fields in the header of the wireless LAN frame. For example: rate (RATE) and length (LENGTH) fields in the inherent signal field of the entity header; HTLENGTH and modulation coding scheme fields in the HT-SIG (signal) of the TgnSync frame header; or WWiSE frame The length of the header signal -N (signal) field and the Config field can be used to derive the base duration information. The basis continues to be the same as the scam duration derived from the entity layer information (SD). Using the spoofing duration (or any variation that can be derived from it) as a base duration provides an efficient way to encode timely (eg, offset) information. Alternatively, the duration/identifier field of the media access control header can be used to derive the base duration information.
使用以誆騙持續時間及群組時點資訊為基礎之時點資訊例係被顯示於第4圖中。群組時點資訊可標示站台何時應開始傾聽媒體,而第4圖中,被編碼群組時點資訊係被給予1/4誆騙持續時間間距。被用於第4圖之群組時點資訊編碼係被說明於表1。應注意,雖然表1以誆騙持續時間方式說明群組時點資訊,但任何類型訊框持續時間均可被用來編碼群組時點資訊。 An example of the time information based on the information on the duration of the fraud and the time of the group is displayed in Figure 4. The group hour information indicates when the station should start listening to the media, and in Figure 4, the time information of the group is given 1/4 spoofing duration. The point information coding system used in the group diagram of Fig. 4 is described in Table 1. It should be noted that although Table 1 illustrates group point information in a spoofing duration manner, any type of frame duration can be used to encode group time information.
新欄位可被添加至無線區域網路訊框之實體或媒體存取控制標頭,明確地用於明定基礎持續時間。基礎持續時間可對應訊框之全持續時間或訊框之部分持續時間。實體協定資料單元叢發或實體協定資料單元整合例中,除了定義基礎持續時間為單實體協定資料單元(或訊框)持續時間,基礎持續時間亦可被定義為實體協定資料單元叢發(也就是涵蓋多訊框之基礎持續時間)或整合實體協定資料單元訊框。同樣地,多速率多接收器整合,反向訊務,多輪詢,或多速率多接收器整合方案中,基礎持續時間可涵蓋被交換之訊框序列全部持續時間。 New fields can be added to the physical or media access control header of the wireless LAN frame, explicitly used to determine the base duration. The base duration can correspond to the full duration of the frame or part of the duration of the frame. In the entity agreement data unit cluster or entity agreement data unit integration example, in addition to defining the base duration as the single entity agreement data unit (or frame) duration, the base duration can also be defined as the entity agreement data unit cluster (also This is to cover the basic duration of the multi-frame) or to integrate the entity agreement data unit frame. Similarly, in multi-rate multi-receiver integration, reverse traffic, multi-polling, or multi-rate multi-receiver integration schemes, the base duration can cover the entire duration of the sequence of frames being exchanged.
除了基礎持續時間之外,各群組分數值必須被明定。分數值係被乘上基礎持續時間以獲得群組實際傳送開始時間(如群組傳送時間偏移)。假設固 定參考分母,則僅分母值必須被明定及通信。例如,假設四分母,則兩位元可被用來提供群組時點資訊。 In addition to the base duration, the group score values must be specified. The score value is multiplied by the base duration to obtain the actual transmission start time of the group (eg, group transfer time offset). Hypothesis With reference to the denominator, only the denominator value must be specified and communicated. For example, assuming a four-point denominator, two-digits can be used to provide group point-in-time information.
再次以標示群組2及3出現之0110群組出現(或不出現)標示器為例,編碼群組時點資訊之一可能方式係每群組具有兩位元,所以群組時點資訊包含八位元(b1,b2,b3,b4,b5,b6,b7,b8),藉此位元b1及b2值可提供群組1之分子值(因為群組出現(或不出現)標示器標示群組1不出現,所以其於此例中可能不需要),而b3及b4提供群組2之分子值等等。例如,為了獲得群組2傳送將開始處或附近之時間偏移資訊,吾人必須將基礎持續時間乘上’b3b4’值並除以四。當該訊框包含用於該站台之資料時(也就是當站台之群組出現於訊框內時),時間偏移資訊大致被解釋為站台將傾聽訊框處或附近之時間。 For example, in the case of the 0110 group appearing (or not appearing) indicator group appearing in groups 2 and 3, one of the ways to encode the group point information may have two digits per group, so the group hour point information includes eight digits. Element (b1, b2, b3, b4, b5, b6, b7, b8), whereby the values of the bits b1 and b2 can provide the molecular value of group 1 (because the group appears (or does not appear) the marker group 1 does not appear, so it may not be needed in this example), and b3 and b4 provide the molecular value of group 2 and so on. For example, in order to obtain time offset information at or near the beginning of the group 2 transmission, we must multiply the base duration by the value of 'b3b4' and divide by four. When the frame contains information for the station (ie, when the group of stations appears in the frame), the time offset information is roughly interpreted as the time at which the station will be listening to or near the frame.
群組時點資訊可被包含於訊框標頭;實體標頭;媒體存取控制標頭;或實體標頭,媒體存取控制標頭,多接收器整合描述符,多回應多接收器整合多輪詢或任何多輪詢訊框之信號欄位(固有信號,HT-SIG,或信號-N)內。群組時點資訊不必被包含於相同於群組出現(或不出現)標示器之位置。例如,群組出現(或不出現)標示器可被包含於實體標頭內,而群組時點資訊可被包含於媒體存取控制標頭(如多接收器整合描述符或多回應多接收器整合多輪詢內)。 Group time information can be included in the frame header; entity header; media access control header; or entity header, media access control header, multi-receiver integration descriptor, multi-response multi-receiver integration Polling or any of the multiple rounds of the signal field (inherent signal, HT-SIG, or signal-N). Group point information does not have to be included in the same location as the group appears (or does not appear). For example, a group presence (or no occurrence) marker can be included in the entity header, and group time information can be included in the media access control header (eg, multiple receiver integration descriptors or multiple response multiple receivers) Integrate multiple polls).
即使群組時點資訊及群組出現(或不出現)標示器資訊被定義為兩獨立欄位,其亦可被合併一起及藉由使用預定映射編碼出現及時點資訊來定義一欄位(群組出現及時點資訊)內之兩類資訊。如第4圖及表2所示,具有各種一起編碼兩片段資訊之方法。 Even if the group hour information and the group appearance (or non-occurrence) marker information are defined as two separate fields, they can be merged together and define a field by using the predetermined mapping code to generate timely information (group) There are two types of information in the information. As shown in Fig. 4 and Table 2, there are various methods for encoding two pieces of information together.
表2. 群組出現及時點資訊編碼例Table 2. Examples of timely occurrence of information in the group
有了值01,10及11,站台可沉睡直到傾聽媒體時間為止,藉此節省功率。因為站台將於誆騙持續時間結束時開始傾聽且於訊框全體傳送期間沉睡,所以11之特殊例可標示群組不出現。群組出現及時點資訊可被包含於訊框標頭,實體標頭或媒體存取控制標頭內。群組出現及時點資訊可被包含於實體標頭,媒體存取控制標頭,多接收器整合描述符,多回應多接收器整合多輪詢或任何多輪詢訊框之信號欄位(固有信號,HT-SIG,或信號-N)內。 With values 01, 10 and 11, the station can sleep until it listens to the media time, thereby saving power. Because the station will start listening at the end of the scam duration and sleep during the entire transmission of the frame, the special case of 11 can indicate that the group does not appear. The timely presence of the group information can be included in the frame header, entity header or media access control header. Group presence timely information can be included in the entity header, media access control header, multi-receiver integration descriptor, multi-response multi-receiver integrated multi-polling or any multi-round interrogation box signal field (inherent Signal, HT-SIG, or signal -N).
具有使用相同頻率頻道之多存取點系統中,給定胞元(也就是存取點涵蓋區域)內之站台係可傾聽發生於另一附近或鄰近胞元中之訊框傳輸。為了擷取該例中較佳功率節省效能,無線區域網路訊框可包含存取點識別,其可被稱為”存取點色彩”或”存取點群組”或”胞元色彩”或”胞元識別”。存取點色彩不一定為存取點唯一識別。例如,若存取點1,存取點2及存取點3彼此接近且使用相同頻率頻道,則藉由使用兩位元來識別存取點色彩,存取點1可被分派11色彩,存取點2可被分派01色彩,存取點3可被分派00色彩。存取點色彩可被包含於訊框標頭,實體標頭,媒體存取控制標頭,實體標頭,媒體存取控制標頭,多接收器整合描述符,多回應多接收器整合多輪詢或任何多輪詢訊框之信號欄位(固有信號,HT-SIG,或信號-N)內。 In a multiple access point system with channels of the same frequency, a station within a given cell (i.e., an access point coverage area) can listen to frame transmissions occurring in another nearby or neighboring cell. In order to capture the better power saving performance in this example, the wireless local area network frame may include access point identification, which may be referred to as "access point color" or "access point group" or "cell color". Or "cell identification." The access point color is not necessarily uniquely identified by the access point. For example, if access point 1, access point 2, and access point 3 are close to each other and use the same frequency channel, access point 1 can be assigned 11 colors by using two bits to identify the access point color. Take point 2 can be assigned 01 color, and access point 3 can be assigned 00 color. Access point color can be included in frame header, entity header, media access control header, entity header, media access control header, multi-receiver integration descriptor, multi-response multi-receiver integration multi-round Query or signal field of any number of rounds of inquiries (inherent signal, HT-SIG, or signal -N).
被存取點1服務之站台係可藉由不解碼包含訊框標頭中不同存取點色 彩之訊框中進一步資訊來節省功率(如站台與存取點1連結藉由不傾聽或解碼包含00,01或10當作其存取點色彩之訊框來節省功率)。存取點色彩可以多存取點系統位準進一步節省功率,但即使無它,亦可使用上述方法來節省功率。 The station served by access point 1 can be decoded by not decoding the different access point colors in the header of the frame. Further information in the color frame to save power (such as the station and access point 1 link to save power by not listening or decoding frames containing 00, 01 or 10 as their access point color). Access point color can further save power by multiple access point system levels, but even without it, the above method can be used to save power.
傾聽方向或指示係說明何者必須被讀取,解碼或解釋。某些例中,非訊框預期接收器(也就是其資料並非被包含於訊框內)之無線區域網路站台仍必須讀取及解碼訊框以擷取特定資訊。例如,站台需更新其局部被儲存NAV持續時間值,且其需至少解碼訊框之媒體存取控制標頭中之持續時間/識別資訊。可替代是,站台可依賴實體標頭資訊(如長度及速率,調變編碼方案或Config欄位)來更新其NAV持續時間值。 Listening directions or directions indicate which must be read, decoded or interpreted. In some cases, the wireless LAN site of the non-frame intended receiver (that is, its data is not included in the frame) must still read and decode the frame to retrieve specific information. For example, the station needs to update its locally stored NAV duration value and it needs to decode at least the duration/identification information in the media access control header of the frame. Alternatively, the station may rely on entity header information (such as length and rate, modulation coding scheme or Config field) to update its NAV duration value.
即使接收站台並非訊框之預期接收器,訊框傳送器仍可使用標頭中欄位(如位元或些許位元)明定讀取及解碼所有或若干媒體存取控制標頭資訊是否需接收站台。傳送器亦可使用另一欄位明定接收站台是否應以被包含於固有實體標頭(如固有信號欄位),高產出(也就是802.11n)實體標頭,或媒體存取控制標頭(如媒體存取控制標頭之持續時間/識別欄位)中之資訊為基礎來更新其局部被儲存NAV持續時間值。 Even if the receiving station is not the intended receiver of the frame, the frame transmitter can use the field in the header (such as a bit or a few bits) to explicitly read and decode all or several media access control header information to receive. Platform. The transmitter may also use another field to specify whether the receiving station should be included in the intrinsic entity header (such as the inherent signal field), the high-output (ie 802.11n) entity header, or the media access control header. The locally stored NAV duration value is updated based on the information in the duration (identification/recognition field of the media access control header).
某些隱性準則可被用來導出媒體存取控制標頭之持續時間/識別欄位(或大致為整個媒體存取控制標頭)是否需被讀取。一準則可比較使用固有實體信號欄位之誆騙持續時間及使用高產出實體HT-SIG(或信號-N)欄位之誆騙持續時間。若兩者間具有特定差異量,則該差異可被解釋為進一步讀取及解釋入媒體存取控制標頭之指示。 Certain implicit criteria can be used to derive whether the duration/recognition field (or substantially the entire media access control header) of the media access control header needs to be read. A criterion can compare the duration of fraud using the inherent entity signal field and the duration of the spoof using the high-output entity HT-SIG (or Signal-N) field. If there is a specific amount of difference between the two, the difference can be interpreted as an indication to further read and interpret the incoming media access control header.
同時,實體標頭內之一欄位(如一位元)係可當作明確傾聽方向或指示來標示站台是否可立即沉睡,或不應沉睡而保持傾聽直到其解碼第一媒體存 取控制標頭(或媒體存取控制資訊若干片段)並接著沉睡。有關傾聽訊框多深之該明確指示係可被進一步擴大來提供何處/何時(如何事件/欄位或何時)立即停止傾聽:ASAP,如解碼媒體存取控制標頭之後,解碼第一媒體存取控制協定資料單元之後,解碼多接收器整合描述符之後等等。 At the same time, a field (such as a single element) in the entity header can be used as a clear listening direction or indication to indicate whether the platform can sleep immediately, or should not sleep and remain listening until it decodes the first media. Take control of the header (or several pieces of media access control information) and then sleep. This explicit indication of how deep the listening frame can be further expanded to provide where/when (how events/fields or when) immediately stop listening: ASAP, after decoding the media access control header, decodes the first medium After accessing the control protocol data unit, decoding the multi-receiver integration descriptor, and so on.
亦可藉由知道訊務方向來節省功率。例如,若給定站台傳送訊務至存取點,則訊框標頭中可標示資料被預定傳送至存取點。因為站台可於其他站台傳送至存取點期間沉睡,所以它們可藉由注視此”訊務方向”(TD)欄位或位元使用此資訊來節省功率。媒體存取控制標頭內,且更明確地媒體存取控制標頭之訊框控制欄位內,係具有可被用來識別訊務方向之”至DS”及”來自DS”欄位。該資訊亦可被用於節省功率。另外,新訊務方向可針對識別訊務方向特定目的被放置於訊框之實體標頭中。訊務方向欄位可被放置於實體標頭之信號欄位(固有信號,HT-SIG,或信號-N)。此簡單方案優點係其不需特定新信號發送來建立群組(一群組包含存取點當作接收器,而其他組包含所有站台當作接收器)。 You can also save power by knowing the direction of the traffic. For example, if a given station transmits traffic to an access point, the marked data in the frame header is scheduled to be transmitted to the access point. Because the station can sleep while other stations are transmitting to the access point, they can use this information to save power by looking at this "Traffic Direction" (TD) field or bit. Within the media access control header, and more specifically within the frame control field of the media access control header, there are "to DS" and "from DS" fields that can be used to identify the direction of the traffic. This information can also be used to save power. In addition, the new traffic direction can be placed in the entity header of the frame for the specific purpose of identifying the traffic direction. The traffic direction field can be placed in the signal field of the entity header (intrinsic signal, HT-SIG, or signal -N). The advantage of this simple solution is that it does not require a specific new signal to be sent to establish a group (one group contains access points as receivers, while other groups contain all stations as receivers).
站台可傳送其偏好不為可使站台消耗太多功率之特定方案部分之信號至存取點,如特定整合或叢發方案,藉此節省站台之功率。例如,站台可使用不想使被預定傳送至其之資料成為整合訊框部分之訊框(管理,動作,控制或資料訊框)。若存取點同意該要求並確認同意回至站台,則該站台可於偵測訊框利用特定方案時藉由沉睡來節省功率。例如,偵測訊框被整合時(藉由使用信號欄位,如HT-SIG欄位中之資訊),站台可於整合訊框期間沉睡。 The station can transmit signals that are not preferred to the particular portion of the scheme that would cause the station to consume too much power, such as a particular integration or bursting scheme, thereby saving station power. For example, the station may use a frame (management, action, control or data frame) that does not want the data to be delivered to it to be part of the integrated frame. If the access point agrees to the request and confirms consent to return to the station, the station can save power by sleeping while the detection frame utilizes a particular solution. For example, when the frame is integrated (by using signal fields, such as information in the HT-SIG field), the station can sleep during the integration of the frame.
站台可使用不想使被預定傳送至其之資料成為特定類型整合,如多接 收器整合部分之訊框。該例中,站台可於包含多接收器整合之訊框期間沉睡。同樣地,站台可要求其不想使被預定傳送至其之媒體存取控制協定資料單元或實體協定資料單元資料整合部分,但其同意為服務資料單元整合部分。訊框標頭中之欄位(如信號欄位中)可被用來標示訊框包含之整合方案精確類型。一旦站台偵測不假設傾聽訊框時,因為訊框不包含站台之資料,所以站台可於訊框持續時間沉睡。站台可協議其是否支援或偏好整合訊框接收(至多目的地或單目的地)。站台可藉由經管理,動作,控制或資料訊框傳送資訊為特徵表列,功能表列,或偏好表列部分來協議。站台可於連結之前,連結之後立即,連結之後某稍後時間或任何其他時間傳送此訊框。 The station can use the information that does not want to be scheduled to be transmitted to it as a specific type of integration, such as multiple connections The frame of the receiver integration part. In this example, the station can sleep during the frame containing the multi-receiver integration. Similarly, the station may require that it do not want to have the media access control agreement data unit or entity agreement data unit data integration portion that is scheduled to be delivered to it, but it agrees to be the service data unit integration portion. The field in the frame header (such as in the signal field) can be used to indicate the exact type of integration scheme included in the frame. Once the station detection does not assume the listening frame, because the frame does not contain the information of the station, the station can sleep for the duration of the frame. The station can agree whether it supports or prefers integrated frame reception (up to destination or single destination). The station can communicate by using the management, action, control or data frame to transmit information as a feature list, a function list, or a preference list. The station can transmit the frame immediately before the link, immediately after the link, at a later time or any other time after the link.
訊息亦可被動態產生,如藉由使站台監視其電池位準及跨越特定門檻及傳送被排除自更耗費功率之方案(如特定整合方案)之要求至存取點。站台亦可標示訊息內之剩餘功率量,及其偏好被排除自或可替代被包含入。 Messages can also be dynamically generated, such as by enabling the station to monitor its battery level and to override the specific threshold and transmit the requirements that are excluded from the more power consuming solution (eg, a particular integration scheme) to the access point. The station can also indicate the amount of remaining power in the message, and its preferences are excluded or substitutable.
固有實體信號欄位(L-SIG)內之未用保留位元之使用亦可被當作識別非固有訊框傳輸之旗幟,如802.11n訊框。因為站台可於這些非固有(如802.11n訊框傳輸)之訊框傳輸期間沉睡,所以此欄位可被用於節省固有裝置新實施(新發出)之功率。 The use of unused reserved bits within the Intrinsic Entity Signal Field (L-SIG) can also be used as a flag to identify unintended frame transmissions, such as 802.11n frames. Because the station can sleep during these non-inherent (such as 802.11n frame transmission) frame transmissions, this field can be used to save power from the new implementation (new issuance) of the intrinsic device.
為了防止站台因錯誤情況而維持沉睡一段長時期之死結情況,當站台進入沉睡模式時,計時器機構係可被實施於站台處。若站台沉睡超過預定時間區間(可配置參數),則因為其已於死結情況,所以其將於計時器終止時喚醒並開始再次傾聽媒體。 In order to prevent the station from staying asleep for a long period of time due to a wrong situation, when the platform enters the sleep mode, the timer mechanism can be implemented at the station. If the station sleeps longer than the predetermined time interval (configurable parameter), it will wake up at the end of the timer and begin listening to the media again because it is dead.
任何功率節省群組資訊(PSGI)片段均可被包含於任何類型無線區域網 路訊框及任何部分無線區域網路訊框內。功率節省群組資訊可被包含於實體標頭內(如信號欄位),媒體存取控制標頭,訊框主體或訊框尾部。功率節省群組資訊某些片段可被包含於訊框中特定位置(如實體標頭內),而功率節省群組資訊某些其他片段係可被放置訊框中某處(如媒體存取控制標頭內)。 Any Power Saver Group Information (PSGI) segment can be included in any type of wireless area network The frame and any part of the wireless LAN frame. The power saving group information can be included in the entity header (such as the signal field), the media access control header, the frame body or the frame tail. Power Saving Group Information Some segments can be included in a specific location in the frame (such as within the entity header), while power saving group information can be placed somewhere in the frame (such as media access control) Within the header).
針對作為實體協定資料單元整合或實體協定資料單元叢發部分之訊框,功率節省群組資訊可被包含整合訊框或叢發中間,例如中間訊框之實體信號(標頭)中,媒體存取控制信號(標頭),中間導碼,或定界符。同時,針對如多回應多接收器整合,反向訊務,多輪詢及多回應多接收器整合多輪詢,某些功率節省群組資訊片段係可被包含於無線區域網路訊框及多接收器整合描述符或多回應多接收器整合多輪詢中。添加若干被提出功率節省群組資訊於該方案中係可增加其效率(例如經由時點資訊效率編碼)及潛在改良其效能。 The power saving group information may be included in the integrated frame or the cluster, such as the physical signal (header) of the intermediate frame, and the media storage, as a frame of the entity agreement data unit integration or the entity agreement data unit clustering part. Take control signals (headers), intermediate guides, or delimiters. At the same time, for multi-response multi-receiver integration, reverse traffic, multi-polling and multi-relay multi-receiver integrated multi-polling, some power saving group information segments can be included in the wireless local area network frame and Multi-receiver integration descriptor or multi-response multi-receiver integration in multi-polling. Adding a number of proposed power saving group information in the scheme can increase its efficiency (eg, via time-point information efficiency coding) and potentially improve its performance.
第5A圖為既存TgnSync實體標頭中之固有實體層匯聚協定標頭500圖示。實體層匯聚協定標頭包含一速率欄位502,一保留欄位504,一長度欄位506,一同位欄位508,及一尾部欄位510。因為實體層匯聚協定標頭500被早先放置於訊框中,所以其為功率節省群組資訊欄位之一之效率位置(以節省接收站台功率表示)。 Figure 5A is a diagram of an intrinsic physical layer convergence protocol header 500 in an existing TgnSync entity header. The entity layer aggregation protocol header includes a rate field 502, a reserved field 504, a length field 506, a co-located field 508, and a tail field 510. Since the physical layer aggregation protocol header 500 is placed in the frame earlier, it is the efficiency location of one of the power saving group information fields (to save the receiving station power).
第5B圖為包含訊框類型標示器欄位552之固有實體層匯聚協定標頭550圖示。欄位502及506-510係與標頭550中相同。當訊框型指示符為一位元且實體層匯聚協定標頭具有一保留位元時,該實體層匯聚協定標頭係為一適當位置。 FIG. 5B is an illustration of an intrinsic physical layer aggregation protocol header 550 containing a frame type marker field 552. Fields 502 and 506-510 are the same as in header 550. When the frame type indicator is a one-bit element and the entity layer aggregation protocol header has a reserved bit, the entity layer aggregation protocol header is an appropriate location.
第6A圖為既存TgnSync實體標頭中之既存HT-SIG欄位600圖示。HT-SIG欄位600係包含一HT-SIG1部分602及一HT-SIG2部分604。HT-SIG1部分602包含一長度欄位610,一保留欄位612及一媒體存取控制 欄位614。HT-SIG2部分604包含一先進編碼欄位620,一第一保留欄位622,一聲響封包欄位624,一數字HY-LTF欄位626,一短GI欄位628,一第二保留欄位630,一倒頻器初始化欄位632,一20/40頻寬欄位634,一週期冗餘檢查欄位636及一信號尾部638。 Figure 6A is a diagram of the existing HT-SIG field 600 in the existing TgnSync entity header. The HT-SIG field 600 includes an HT-SIG1 portion 602 and an HT-SIG2 portion 604. The HT-SIG1 portion 602 includes a length field 610, a reserved field 612, and a media access control. Field 614. The HT-SIG2 portion 604 includes an advanced coding field 620, a first reserved field 622, an audio packet field 624, a digital HY-LTF field 626, a short GI field 628, and a second reserved column. Bit 630, a scrambler initialization field 632, a 20/40 bandwidth field 634, a periodic redundancy check field 636 and a signal tail 638.
第6B圖為包含HT-SIGX部分652之HT-SIG欄位650圖示;HT-SIG1部分602及HT-SIG2部分604相同於HT-SIG欄位600。HT-SIGX部分652包含一訊框型指示符欄位654,一訊務方向欄位656,一出現或有效性旗幟658,一群組出現(或不出現)標示器/群組時點資訊/群組出現及時點資訊欄位662,一存取點色彩欄位664,及一週期冗餘檢查666。應注意,雖然HT-SIGX部分652被顯示具有所有功率節省群組資訊欄位,HT-SIGX部分652可被以任何數目功率節省群組資訊欄位被建構而不影響本發明效能。此外,所示功率節省群組資訊欄位順序僅為例證,而熟練技術人士可再安排欄位順序而不影響本發明操作。 Figure 6B is a diagram of the HT-SIG field 650 containing the HT-SIG X portion 652; the HT-SIG1 portion 602 and the HT-SIG2 portion 604 are identical to the HT-SIG field 600. The HT-SIG X portion 652 includes a frame indicator field 654, a traffic direction field 656, an appearance or validity flag 658, and a group appearance (or no occurrence) of the marker/group point information/ The group appears in time for the information field 662, an access point color field 664, and a one-cycle redundancy check 666. It should be noted that although the HT-SIG X portion 652 is shown with all power saving group information fields, the HT-SIG X portion 652 can be constructed with any number of power saving group information fields without affecting the performance of the present invention. Moreover, the power save group information field order shown is merely exemplary, and the skilled artisan may rearrange the field order without affecting the operation of the present invention.
可替代是,HT-SIG1部分602中之保留欄位612及HT-SIG2部分604中之第一保留欄位622及第二保留欄位630係可被用於功率節省群組資訊。功率節省群組資訊欄位可被展開及放置於保留欄位中其原本位置,或保留欄位可被再安排來形成功率節省群組資訊欄位彼鄰空間。 Alternatively, the reserved field 612 in the HT-SIG1 portion 602 and the first reserved field 622 and the second reserved field 630 in the HT-SIG2 portion 604 can be used for power saving group information. The power saving group information field can be expanded and placed in its original location in the reserved field, or the reserved field can be rearranged to form a power saving group information field adjacent to the space.
第7A圖為WWiSE實體標頭700中之既存信號-MM欄位702及既存信號-N欄位704圖示。信號-MM欄位702包含一速率欄位710,一保留欄位712,一長度欄位714,一同位欄位716,及一尾部欄位718。信號-N欄位704包含一第一保留欄位720,一配置欄位722,一長度欄位724,一LPI欄位726,一第二保留欄位728,一週期冗餘檢查欄位730,一尾部欄位732及一服務欄位734。 FIG. 7A is an illustration of the existing signal-MM field 702 and the existing signal-N field 704 in the WWiSE entity header 700. The signal-MM field 702 includes a rate field 710, a reserved field 712, a length field 714, a co-located field 716, and a tail field 718. The signal-N field 704 includes a first reserved field 720, a configuration field 722, a length field 724, an LPI field 726, a second reserved field 728, and a periodic redundancy check field 730. A tail field 732 and a service field 734.
第7B圖為包含WWiSE實體標頭750中之信號-MM欄位752及信號-N 欄位754圖示。功率節省群組資訊欄位可被放置於既存保留欄位712,720及728。如第7B圖所示,訊框型指示符欄位756可被放置於信號-MM欄位752中,而某些其他功率節省群組資訊欄位可被放置於信號-N欄位754之位置758及760處。應注意,欄位758及760可被再安排於信號-N欄位754中來形成功率節省群組資訊欄位彼鄰空間。 Figure 7B is a diagram containing the signal in the WWiSE entity header 750 - MM field 752 and signal -N Field 754 is shown. The power saving group information field can be placed in existing reserved fields 712, 720 and 728. As shown in FIG. 7B, the frame type indicator field 756 can be placed in the signal-MM field 752, and some other power saving group information fields can be placed in the signal-N field 754 position. 758 and 760. It should be noted that fields 758 and 760 can be rearranged in signal-N field 754 to form a power saving group information field adjacent to the space.
功率節省群組資訊完整性(正確性)係可經由檢查和(如週期冗餘檢查)或同位計算被保護。週期冗餘檢查可為訊框標頭內之最新定義欄位,或可為實體或媒體存取控制標頭內之既存檢查和或週期冗餘檢查欄位(如HT-SIG或信號-N欄位)。週期冗餘檢查可單獨從所有或部分功率節省群組資訊被導出,或可從訊框標頭及功率節省群組資訊被之某些其他資訊被導出。 Power Saving Group Information Integrity (correctness) can be protected via checks and (eg periodic redundancy checks) or parity calculations. The periodic redundancy check can be the latest defined field in the frame header, or can be an existing check and or periodic redundancy check field in the entity or media access control header (eg HT-SIG or Signal-N column) Bit). The periodic redundancy check can be derived separately from all or part of the power save group information, or can be derived from some other information from the frame header and power save group information.
即使大多數說明及例子說出整合訊框,但所有該說明及例子亦可同樣應用至訊框之叢發或訊框序列,如實體協定資料單元叢發,多回應多接收器整合,輪詢,多輪詢,或多輪詢多回應多接收器整合方案。 Even though most of the descriptions and examples speak out of the integrated frame, all of the descriptions and examples can be applied to the burst or frame sequence of the frame, such as the entity agreement data unit burst, multi-response multi-receiver integration, polling Multi-polling, or multi-polling multi-response multi-receiver integration solution.
在此說明之本發明係可應用至任何無線區域網路系統脈絡,如BSS,ESS,IBSS至無線區域網路網狀網路及無線區域網路端對端(ad-hoc)網路。該網路及大致被說明者及被當作案例內之小差異係若存取點不呈現為該網路內之節點,則任何站台均可提供被歸因於存取點之功能性。許多無線區域網路站台亦可不需存取點來一起合作實施本發明功能及方法。 The invention described herein is applicable to any wireless local area network system such as BSS, ESS, IBSS to wireless local area network and wireless area network ad-hoc. The network and the approximated person and the small difference in the case are considered as if the access point does not appear as a node within the network, then any station can provide functionality attributed to the access point. Many wireless local area network stations may also cooperate to implement the functions and methods of the present invention without the need for access points.
本發明不限制僅為無線區域網路系統或網路,或僅802.11為基礎無線區域網路系統。本發明可被使用及應用於任何無線通信系統中,如其他無線區域網路技術或標準,及其他蜂巢通信系統,包含通用行動電信系統(UMTS),寬頻分碼多重存取(WCDMA),分碼多重存取2000,高速下鏈封 包存取(HSDPA),高速上鏈封包存取(HSUPA),或第三代夥伴計劃(3GPP)LTE。本發明亦可應用及使用於廣域無線網路,如802.16中。 The invention is not limited to wireless local area network systems or networks alone, or only 802.11 based wireless local area network systems. The present invention can be used and applied to any wireless communication system, such as other wireless local area network technologies or standards, and other cellular communication systems, including Universal Mobile Telecommunications System (UMTS), Wideband Coded Multiple Access (WCDMA), and Code multiple access 2000, high speed chain seal Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), or Third Generation Partnership Project (3GPP) LTE. The invention can also be applied and used in wide area wireless networks, such as 802.16.
AP‧‧‧存取點 AP‧‧‧ access point
CRC‧‧‧週期冗餘檢查 CRC‧‧‧cycle redundancy check
GI‧‧‧群組資訊 GI‧‧‧Group Information
GPI‧‧‧群組出現(或不出現)標示器 GPI‧‧‧ group appears (or does not appear) marker
GTI‧‧‧群組時點資訊 GTI‧‧‧ group time information
GPTI‧‧‧群組出現及時點資訊 GPTI‧‧‧ groups have timely information
LDI‧‧‧傾聽方向或指示 LDI‧‧‧ Listening directions or instructions
MCS‧‧‧調變編碼方案 MCS‧‧‧ modulation coding scheme
PVF‧‧‧出現或有效性旗幟 PVF‧‧‧ emergence or effectiveness banner
SIG‧‧‧信號 SIG‧‧‧ signal
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TW (4) | TWI583223B (en) |
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Also Published As
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CN101584229B (en) | 2017-06-09 |
TW201534156A (en) | 2015-09-01 |
TW200707937A (en) | 2007-02-16 |
AR053239A1 (en) | 2007-04-25 |
TWI583223B (en) | 2017-05-11 |
TW201334448A (en) | 2013-08-16 |
CN106941666A (en) | 2017-07-11 |
CN107105424B (en) | 2021-05-11 |
CN101584229A (en) | 2009-11-18 |
CN107105424A (en) | 2017-08-29 |
TW201010316A (en) | 2010-03-01 |
CN106941666B (en) | 2020-10-30 |
TWI466471B (en) | 2014-12-21 |
TWI519089B (en) | 2016-01-21 |
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