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    • 1. 发明授权
    • Frame synchronisation in a radio access network
    • 无线接入网络中的帧同步
    • US07626974B2
    • 2009-12-01
    • US10578893
    • 2003-11-24
    • Janne Johannes PeisaMats Fredrik Sagfors
    • Janne Johannes PeisaMats Fredrik Sagfors
    • H04J3/06
    • H04B7/2693
    • A method of optimizing the timing offsets with which data frames are transmitted over the Iur/Iub interfaces of a UMTS Terrestrial Radio Access Network, UTRAN. The method comprises, for a given Iur/Iub interface or set of Iur/Iub interfaces over which identical user plane data is to be sent, defining a duration of a data frame receiving window for use by the receiving node(s), transmitting data frames from a sending node with an initial timing offset sufficient to ensure a likelihood that the frames will be received at the or each receiving node within the defined receiving window, reducing the timing offset at the sending node in a stepwise manner, and adjusting the timing offset at the sending node in response to the receipt of late Time of Arrival error reports at the sending node. In a second embodiment, the frame synchronisation of frames corresponding to speech services and data services is carried out by delaying the frames corresponding to speech services a fixed delay and the frames corresponding to data services a variable delay based on a received time of arrival feedback.
    • 一种优化通过UMTS陆地无线电接入网络UTRAN的Iur / Iub接口传送数据帧的定时偏移的方法。 该方法包括对于给定的Iur / Iub接口或Iur / Iub接口的集合,在其上将要发送相同的用户平面数据,定义由接收节点使用的数据帧接收窗口的持续时间,传送数据 来自具有初始定时偏移的发送节点的帧足以确保帧将在所定义的接收窗口内的每个接收节点处被接收的可能性,以逐步的方式减少发送节点处的定时偏移,并且调整定时 响应于在发送节点接收到延迟的到达时间错误报告,在发送节点处偏移。 在第二实施例中,通过将对应于语音服务的帧延迟固定的延迟和对应于数据业务的帧,基于接收的到达时间反馈的可变延迟来执行对应于语音业务和数据业务的帧的帧同步。
    • 3. 发明申请
    • Signaling Mechanism for Inter-RAT Carrier Aggregation
    • RAT间载波聚合的信令机制
    • US20110305193A1
    • 2011-12-15
    • US12948871
    • 2010-11-18
    • Stephen J. GrantStefan ParkvallMats Fredrik Sagfors
    • Stephen J. GrantStefan ParkvallMats Fredrik Sagfors
    • H04W4/00
    • H04W76/16H04W88/06H04W88/10H04W88/12H04W92/045
    • A signaling mechanism informs a Radio Network Controller of the radio access technology associated with data packets forwarded to the Radio Network Controller from base stations supporting multiple radio access technologies. With this information, the Radio Network Controller can associate received data with the corresponding radio access technologies, and thus manage differing physical layer procedures, such as outer-loop power control, for the radio access technologies. In an example method, first and second data units transmitted by a mobile station over first and second radio access technologies, respectively, are forwarded from one or more base stations to a network control node for further processing. A control message associated with at least some of the data units is also sent to the network control node, the control message indicating the radio access technology over which the associated data units were transmitted.
    • 信令机制向无线电网络控制器通知从支持多种无线电接入技术的基站转发到无线电网络控制器的与数据分组相关联的无线电接入技术。 利用该信息,无线电网络控制器可以将接收的数据与相应的无线电接入技术相关联,并且因此管理用于无线接入技术的不同物理层过程,例如外环功率控制。 在一个示例方法中,由移动台通过第一和第二无线电接入技术分别发送的第一和第二数据单元从一个或多个基站转发到网络控制节点用于进一步处理。 与至少一些数据单元相关联的控制消息也被发送到网络控制节点,该控制消息指示相关联的数据单元通过其发送的无线电接入技术。
    • 6. 发明授权
    • Enhanced transmission quality in push-to talk system
    • 一键通系统增强传输质量
    • US07689237B2
    • 2010-03-30
    • US10599850
    • 2004-04-15
    • Mats Fredrik Sagfors
    • Mats Fredrik Sagfors
    • H04B7/00H04Q7/20
    • H04W4/10H04W4/06H04W76/45H04W88/02
    • The present invention relates to methods and arrangements to enhance transmission quality in a Push-to-Talk system comprising a sending mobile unit MB1, and a receiving mobile unit MB2 used by a receiving subscriber B. The receiving unit MB2 comprises a Play-Out-Buffer POB and a Repeat Buffer RB, whereby a stream of sequences 15-19,25-29,35-39 is sent from the sending unit MB1 to the receiving unit MB2. The method comprises the following steps:—The incoming stream of sequences 15-19,25-29,35-39 is collected into the Repeat Buffer RB and into the Play-Out-Buffer POB. The Play-Out-Buffer has a storage size and a point for commencing play-out that provides low voice delay, and the Repeat Buffer has a storage size that provides high sound quality. —The incoming stream is played-out from the Play-Out-Buffer POB to the receiving subscriber B. —Replay is commenced of a defined part 36-39 of the sequences 15-19,25-29,35-39 collected in the Repeat Buffer RB.
    • 本发明涉及一种在一键通系统中提高传输质​​量的方法和装置,包括由接收用户B使用的发送移动单元MB1和接收移动单元MB2。接收单元MB2包括一个播放 - 缓冲器POB和重复缓冲器RB,由此将序列15-19,25-29,35-39的流从发送单元MB1发送到接收单元MB2。 该方法包括以下步骤: - 序列15-19,25-29,35-39的输入流被收集到重复缓冲器RB中并进入播出缓冲器POB。 播放缓冲区具有提供低语音延迟的开始播放的存储大小和点,并且重复缓冲器具有提供高音质的存储大小。 - 输入流从播放缓冲器POB播放到接收用户B.从第15-19,25-29,35-39中收集的序列36-39开始播放。 重复缓冲区RB。
    • 8. 发明申请
    • Enchanced Transmission Quality In Push-To Talk System
    • 推送通话系统中的加强传输质量
    • US20080268890A1
    • 2008-10-30
    • US10599850
    • 2004-04-15
    • Mats Fredrik Sagfors
    • Mats Fredrik Sagfors
    • H04B7/00H04M1/00
    • H04W4/10H04W4/06H04W76/45H04W88/02
    • The present invention relates to methods and arrangements to enhance transmission quality in a Push-to-Talk system comprising a sending mobile unit MB1, and a receiving mobile unit MB2 used by a receiving subscriber B. The receiving unit MB2 comprises a Play-Out-Buffer POB and a Repeat Buffer RB, whereby a stream of sequences 15-19,25-29,35-39 is sent from the sending unit MB1 to the receiving unit MB2. The method comprises the following steps: —The incoming stream of sequences 15-19,25-29,35-39 is collected into the Repeat Buffer RB and into the Play-Out-Buffer POB. The Play-Out-Buffer has a storage size and a point for commencing play-out that provides low voice delay, and the Repeat Buffer has a storage size that provides high sound quality. —The incoming stream is played-out from the Play-Out-Buffer POB to the receiving subscriber B. —Replay is commenced of a defined part 36-39 of the sequences 15-19,25-29,35-39 collected in the Repeat Buffer RB.
    • 本发明涉及在一键通系统中提高传输质​​量的方法和装置,包括由接收用户B使用的发送移动单元MB 1和接收移动单元MB 2。接收单元MB 2包括播放 O缓冲器POB和重复缓冲器RB,由此从发送单元MB 1向接收单元MB 2发送序列15-19,25-29,35-39的流。 该方法包括以下步骤:将序列15-19,25-29,35-39的输入流收集到重复缓冲器RB中并进入播出缓冲区POB。 播放缓冲区具有提供低语音延迟的开始播放的存储大小和点,并且重复缓冲器具有提供高音质的存储大小。 - 输入流从播放缓冲区POB播放到接收用户B.从第15 - 19,25 - 29,35-39段中收集的序列36-39开始播放。 重复缓冲区RB。
    • 9. 发明申请
    • Broadcast-based communication in a radio or wireless access network to support mobility
    • 在无线电或无线接入网络中的基于广播的通信以支持移动性
    • US20080089287A1
    • 2008-04-17
    • US11546569
    • 2006-10-12
    • Mats Fredrik SagforsShyam ChakrabortyJohan Torsner
    • Mats Fredrik SagforsShyam ChakrabortyJohan Torsner
    • H04Q7/00
    • H04W36/026H04W36/0007H04W36/0085H04W72/005
    • In a radio or wireless access network, packets to be transmitted to a mobile radio are broadcast over a transport network to a set of associated radio access points, where each set of associated radio access points corresponds to a broadcast group. Each access point monitors packets broadcast to it broadcast group to determine if the access point should retrieve the packet. Rather than establishing packet tunnels to specific access points to transport packets to be transmitted to a mobile station through a transport network, those packets simply are broadcast over the transport network to the relevant broadcast group(s). Select diversity may be used where the mobile selects which access point transmits a particular packet to the mobile station. Alternatively, the network may decide which access point transmits a particular packet to the mobile station. This approach greatly facilitates cost-efficient and fast handovers of a mobile connection between access points in a wireless network.
    • 在无线电或无线接入网络中,要发送到移动无线电的分组通过传输网络广播到一组相关联的无线电接入点,其中每组相关联的无线电接入点对应于广播组。 每个接入点监视广播组播广播组的数据包,以确定接入点是否应该检索数据包。 不是将分组隧道建立到特定的接入点,而是通过传输网将传输的分组传输到移动台,而是简单地通过传输网络将广播到相关的广播组。 可以在移动台选择哪个接入点向移动台发送特定分组的情况下使用选择分集。 或者,网络可以决定哪个接入点向移动台发送特定分组。 这种方法极大地促进了无线网络中的接入点之间的移动连接的成本效率和快速切换。