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    • 4. 发明授权
    • Selective repeat ARQ with efficient utilization of bitmaps
    • 选择性重复ARQ,有效利用位图
    • US06778501B1
    • 2004-08-17
    • US09543156
    • 2000-04-04
    • Göran MalmgrenGunnar RydnellJan LindskogGyörgy MiklosHui LiFredrik Nilsson
    • Göran MalmgrenGunnar RydnellJan LindskogGyörgy MiklosHui LiFredrik Nilsson
    • H04L1256
    • H04L1/1809H04L1/1614H04L1/187
    • In a wireline or wireless telecommunications system or data network, which employs a Selective Repeat Automatic Repeat Request (ARQ) to convey data packet reception status for a sequence of data packets grouped together into a number of blocks of data packets, partial bit mapping is employed to improve efficiency, particularly with respect to bandwidth. This may be accomplished, more specifically, by including in the ARQ message that is sent from the receiver to the sender, a number of partial bitmaps, along with a corresponding number of bitmap block numbers, where a first bitmap block number identifies a particular one of the blocks of data packets and the corresponding bitmap defines the reception status of the data packets in that block. Each of the remaining bitmap block numbers identify an additional block of data packets relative to the first block of data packets. Accordingly, the remaining bitmap block numbers require fewer bits to identify their corresponding data packet blocks.
    • 在有线或无线电信系统或数据网络中,其使用选择性重复自动重传请求(ARQ)来将分组在一起的数据分组序列的数据分组接收状态传送到多个数据分组块,采用部分比特映射 以提高效率,特别是在带宽方面。 这可以更具体地通过将从接收器发送到发送器的ARQ消息中包括多个部分位图以及相应数量的位图块号码来实现,其中第一位图块号码标识特定的一个 的数据分组块和相应的位图定义了该块中的数据分组的接收状态。 剩余的位图块号码中的每一个标识相对于第一数据包块的附加数据包块。 因此,剩余的位图块号需要较少的比特来标识它们对应的数据分组块。
    • 6. 发明授权
    • Power status for wireless communications
    • US07433702B2
    • 2008-10-07
    • US09757084
    • 2001-01-10
    • Jan LindskogFredrik SällströmLorens AlmehagGöran Malmgren
    • Jan LindskogFredrik SällströmLorens AlmehagGöran Malmgren
    • H04B7/00
    • H04W8/245G06F1/3203H04W52/0219H04W84/12H04W84/18H04W88/08Y02D10/126Y02D70/1222Y02D70/142Y02D70/22
    • A wireless local area network (LAN) is operated so that a mobile terminal (MT) transmits various power-related information over an air interface to a power status repository (PSR) of the wireless local area network (LAN). For example, in one aspect of the invention, the mobile terminal transmits power status information, the power status information having an indication of whether the mobile terminal is currently operating using battery power or line power. The power status information is transmitted at one of the following times: (1) upon power-up of the mobile terminal; (2) upon command issued from the power status repository; (3) upon establishment of a connection between the mobile terminal and the LAN; and (4) upon a change in power status for the mobile terminal. The power status repository (PSR) can take the form of an Access Point (AP) for an intranet, or another mobile terminal in the case of an ad hoc network. In differing embodiments, the power status information can either be transmitted as a dedicated message or in a message with other status information. In another aspect, the mobile terminal which transmits to the power status repository certain measurement capability information. The measurement capability information has an indication of whether the mobile terminal has a capacity to perform radio frequency measurements. For example, the measurement capability information can indicate one of low power of the mobile terminal or a power restriction on the mobile terminal. As another example, the measurement capability information can indicate a particular sleep mode of the mobile terminal. In accordance with yet another aspect of the invention, if the power status repository does not have sufficient measurements regarding radio frequency (in view, e.g., of power incapacitation by one or more mobile terminals (MTs) in its cell), the power status repository can modify (e.g., increase) a rate at which a frequency measurement command is transmitted to other mobile terminal(s) in the cell. In still another aspect of the invention, the mobile terminal determines a duration of a sleep cycle in accordance with the power status information of the mobile terminal.
    • 7. 发明授权
    • Mobile terminal decode failure procedure in a wireless local area network
    • 无线局域网中的移动终端解码失败过程
    • US06363267B1
    • 2002-03-26
    • US09287112
    • 1999-04-07
    • Jan LindskogGunnar RydnellLorens AlmehagGöran Malmgren
    • Jan LindskogGunnar RydnellLorens AlmehagGöran Malmgren
    • H04M100
    • H04W52/0216Y02D70/142
    • In accordance with embodiments of the invention, in a Wireless Local Area Network (WLAN) configured in accordance with the HIPERLAN Type 2 standard where an Access Point (AP) and Mobile Terminals (MTs) use a duplex airlink having a MAC frame structure to communicate with each other, when an MT fails to properly perceive and decode a wakeup announcement in the MAC frame that is directed to it by the AP, the MT will remain awake and continue to decode and monitor subsequent MAC frames until it either receives a wakeup announcement directed to it, or until a predetermined number of MAC frames transpire. Where the MT fails to correctly decode a wakeup announcement and/or fails to send an acknowledgment signal back to the AP when the wakeup announcement includes a polling request, the AP will continue to resend the wakeup announcement and any appropriate, associated downlink data pending for the AP, in subsequent MAC frames. The AP continues until either the MT correctly receives the wakeup announcement and responds appropriately, or until a predetermined number of MAC frames expire.
    • 根据本发明的实施例,在根据HIPERLAN类型2标准配置的无线局域网(WLAN)中,其中接入点(AP)和移动终端(MT)使用具有MAC帧结构的双工空中链路进行通信 相互之间,当MT无法正确地感知和解码由AP指向的MAC帧中的唤醒通知时,MT将保持唤醒,并继续解码并监视后续MAC帧,直到它接收到唤醒通知 或者直到预定数量的MAC帧发生。 当唤醒通知包括轮询请求时,MT无法正确解码唤醒通知和/或无法将确认信号发送回AP,则AP将继续重新发送唤醒通知和任何适当的相关联的下行链路数据待处理 AP,在随后的MAC帧中。 AP继续直到MT正确地接收到唤醒通知并且适当地响应,或直到预定数量的MAC帧过期。
    • 8. 发明授权
    • Channel allocation in a telecommunications system with asymmetric uplink and downlink traffic
    • 在具有不对称上行链路和下行链路业务的电信系统中的信道分配
    • US06334057B1
    • 2001-12-25
    • US09107472
    • 1998-06-30
    • Göran MalmgrenFredric Kronestedt
    • Göran MalmgrenFredric Kronestedt
    • H04Q720
    • H04W72/082
    • In a synchronous cellular radio telecommunications network that employs a time division multiple access (TDMA) channel allocation scheme, an effective approach to allocating channels or time slots in a TDMA time frame containing asymmetric downlink and uplink traffic channel fields can be achieved by dividing the downlink and uplink traffic channel fields into a number of regions, based on an expected level of intercell interference associated with each region. In addition, the level of susceptibility to intercell interference for each mobile unit operating in a given cell is continuously established. The allocation of channels or time slots is then carried out for each of the mobile units based on, among other things, the level of susceptibility associated with each of the mobile units, the level of expected intercell interference associated with each of the regions, and whether the channel or time slot is being allocated for the purpose of conveying information in the uplink or downlink traffic channel field.
    • 在采用时分多址(TDMA)信道分配方案的同步蜂窝无线电通信网络中,可以通过划分下行链路的下行链路和下行链路业务信道字段来在TDMA时间帧内分配信道或时隙的有效方法 以及基于与每个区域相关联的小区间干扰的期望水平,将上行链路业务信道字段转换成多个区域。 另外,对于在给定小区中操作的每个移动单元的小区间干扰敏感性的级别是连续建立的。 然后,基于与每个移动单元相关联的敏感度的级别,与每个区域相关联的期望的小区间干扰的级别,以及对于每个移动单元,对每个移动单元执行信道或时隙的分配,以及 该信道或时隙是否被分配用于在上行链路或下行链路业务信道字段中传送信息。