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    Decoupled power control channel for reverse-link power control
    2.
    发明公开
    Decoupled power control channel for reverse-link power control 有权
    解耦Leistungsregelengskanal用于反向功率控制

    公开(公告)号：EP1059736A3

    公开(公告)日：2003-08-06

    申请号：EP00304774.3

    申请日：2000-06-06

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Kumar, Sarath ,  Li, Quinn ,  Wu, Xiao C.

    IPC: H04B7/005

    CPC classification number: H04W52/143 ,  H04W52/146 ,  H04W52/40 ,  H04W52/50 ,  H04W52/54

    Abstract: In a wireless communications system, a base station transmits power control signals (e.g., the power control bits of a power control sub-channel) to a mobile using a forward-link channel that is decoupled from all other signals transmitted from that base station to that mobile. For example, the decoupled forward-link channel may be a common power control channel. The mobile then uses the power control signals received in the decoupled forward-link channel to control its power level for transmitting one or more reverse-link channels to the base station. The ability of base stations to use decoupled forward-link channels in order to transmit their power control signals to a mobile enables a mobile to operate with different active sets for the forward and reverse links. This enables forward-link data traffic to be implemented using a simplex mode, even when the mobile is operating in soft handoff in the reverse link. This in turn greatly reduces the reactivation time involved in transitioning a mobile from the suspended state to the active state, which is particularly desirable for bursty (i.e., intermittent) packet data flow, as opposed to continuous circuit-oriented voice messaging.

    Low back haul reactivation delay for high-speed packet data services in CDMA systems
    4.
    发明公开
    Low back haul reactivation delay for high-speed packet data services in CDMA systems 有权
    对于分组数据业务的高速CDMA系统反向链路的低延迟激活

    公开(公告)号：EP1063863A2

    公开(公告)日：2000-12-27

    申请号：EP00304768.5

    申请日：2000-06-06

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Kumar, Sarath ,  Nanda, Sanjiv ,  Rubin, Harvey ,  Vitebsky, Stanley

    IPC: H04Q7/38

    CPC classification number: H04W52/12 ,  H04W36/18 ,  H04W52/54

    Abstract: A back haul architecture effectively reduces the reactivation times for both forward-link and reverse-link data transmissions over CDMA wireless communications systems, by relying on packet-mode transmissions over the back haul between a frame selection/distribution (FSD) function and the appropriate base stations for both forward-link data and reverse-link data. In particular, for the forward direction, the FSD function transmits forward-link data only to one base station (i.e., the primary base station), which is solely responsible for controlling the forward-link air interface with the corresponding mobile unit. As such, the forward link always operates in simplex mode for data transmissions, independent of how many base stations are operating in soft handoff for the reverse link with the same mobile unit. For the reverse direction, each base station that receives frames of reverse-link data from the mobile unit, assigns a time tag to the frame, divides the frame into one or more data packets, assigns a different sequence number to each data packet, and transmits the data packets to the FSD function over the back haul, all without first synchronizing time with any other base station that is also operating in reverse-link soft hand-off with that mobile unit. The FSD function (or preferably the radio link protocol (RLP) function) is then responsible for selecting packets of reverse-link data for subsequent processing (e.g., transmission to the network end of the connection). By limiting forward-link data transmissions to simplex mode and using packet-mode transmissions for reverse-link data, the need to first synchronize timing between the various base stations is eliminated for both forward-link and reverse-link data transmissions. As a result, reactivation delays are greatly reduced.

    Abstract translation: 甲回程结构，通过在帧选择/分配（FSD）功能和适当之间回程依靠分组模式传输有效地减少用于在CDMA无线通信系统中两个前向链路和反向链路数据传输的再激活时间 基站对于两个前向链路数据和反向链路数据。 特别地，对于前进方向，FSD功能发送前向链路数据仅给一个基站（即，主基站），所有这些是用于控制与移动单元对应正向链路空中接口负责。 如测试，前向链路总是工作在用于数据传输的，独立的许多基站是如何在软越区切换操作，用于与同一移动单元的反向链路的单工模式。 对于反向方向中，每个基站没有接收反向链路的数据帧从所述移动单元，时间标签分配给该帧，将帧划分的一个或多个数据分组，分配不同的序列号到每个数据分组，并 发送数据分组到FSD功能通过回程，所有这些都不第一同步时间与任何其它基站做gibt在反向链路操作软越区切换与移动单元一样。 FSD功能（或优选的无线电链路协议（RLP）功能）是则选择反向链路数据分组用于后续处理（例如，发送到连接的网络端）负责。 通过限制前向链路数据传输，以单工模式和使用分组模式传输反向链路数据时，需要首先同步不同的基站之间的定时被消除对于两个前向链路和反向链路数据传输。 其结果是，再激活延迟大大降低。

    Low back haul reactivation delay for high-speed packet data services in CDMA systems
    6.
    发明公开
    Low back haul reactivation delay for high-speed packet data services in CDMA systems 有权
    对于分组数据业务的高速CDMA系统反向链路的低延迟激活

    公开(公告)号：EP1063863A3

    公开(公告)日：2001-03-28

    申请号：EP00304768.5

    申请日：2000-06-06

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Kumar, Sarath ,  Nanda, Sanjiv ,  Rubin, Harvey ,  Vitebsky, Stanley

    IPC: H04Q7/38

    CPC classification number: H04W52/12 ,  H04W36/18 ,  H04W52/54

    Abstract: A back haul architecture effectively reduces the reactivation times for both forward-link and reverse-link data transmissions over CDMA wireless communications systems, by relying on packet-mode transmissions over the back haul between a frame selection/distribution (FSD) function and the appropriate base stations for both forward-link data and reverse-link data. In particular, for the forward direction, the FSD function transmits forward-link data only to one base station (i.e., the primary base station), which is solely responsible for controlling the forward-link air interface with the corresponding mobile unit. As such, the forward link always operates in simplex mode for data transmissions, independent of how many base stations are operating in soft handoff for the reverse link with the same mobile unit. For the reverse direction, each base station that receives frames of reverse-link data from the mobile unit, assigns a time tag to the frame, divides the frame into one or more data packets, assigns a different sequence number to each data packet, and transmits the data packets to the FSD function over the back haul, all without first synchronizing time with any other base station that is also operating in reverse-link soft hand-off with that mobile unit. The FSD function (or preferably the radio link protocol (RLP) function) is then responsible for selecting packets of reverse-link data for subsequent processing (e.g., transmission to the network end of the connection). By limiting forward-link data transmissions to simplex mode and using packet-mode transmissions for reverse-link data, the need to first synchronize timing between the various base stations is eliminated for both forward-link and reverse-link data transmissions. As a result, reactivation delays are greatly reduced.

    Burst-level resource allocation in cellular systems
    7.
    发明公开
    Burst-level resource allocation in cellular systems 有权
    资源分配突发在蜂窝系统中电平

    公开(公告)号：EP0975186A3

    公开(公告)日：2001-01-10

    申请号：EP99305506.0

    申请日：1999-07-12

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Kumar, Sarath ,  Nanda, Sanjiv ,  Vitebsky, Stanley

    IPC: H04Q7/38

    CPC classification number: H04W72/0413 ,  H04B2201/70703 ,  H04W28/20 ,  H04W72/042 ,  H04W72/0453 ,  H04W74/00 ,  H04W74/04 ,  H04W84/042

    Abstract: Bursts of additional bandwidth (e.g., one or more supplemental channels or a channel having variable bandwidth) is assigned to users (e.g., high-speed data users) in a cellular telecommunication system. A request for assignment of additional bandwidth may be an initial request, a continuation request for an on-going burst, or a retry requests after a previously rejected request. In any case, it is determined whether to grant or reject the request. If the request is rejected, instructions are given to submit a retry request after a specified back-off time. The present invention may be implemented using either an asynchronous approach or a synchronous approach. According to the asynchronous approach, all requests are handled asynchronously. According to the synchronous approach, initial requests are handled asynchronously, but continuation requests and retry requests are handled synchronously at epoch times that coincide with specific time slots.

    A method for performing a soft handoff
    8.
    发明公开
    A method for performing a soft handoff 有权
    一种执行软切换的方法

    公开(公告)号：EP0899981A2

    公开(公告)日：1999-03-03

    申请号：EP98306550.9

    申请日：1998-08-18

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Kumar, Sarath ,  Rege, Kiran M. ,  Kuo, Wen-Yi

    IPC: H04Q7/38

    CPC classification number: H04W36/18

    Abstract: The present invention increases the success rate of soft handoffs by enhancing the ability of a mobile-telephone to receive a handoff direction message that identifies the traffic channel being assigned to enable a candidate base station to communicate with the mobile-telephone. Specifically, the aforementioned ability of the mobile-telephone is enhanced by using the candidate base station to transmit the handoff direction message on a communication channel belonging to the candidate base station and being listened to by the mobile-telephone. In situations where signals transmitted from active set base stations have a low signal-to-noise ratio at the mobile-telephone, signals transmitted from the candidate base station may have a higher signal-to-noise ratio at the mobile-telephone. In these situations, the transmission of the HD messages from the candidate base station increases the likelihood that a copy of the handoff direction message will be successfully received by the mobile-telephone, thereby enhancing the success rate of soft handoffs.

    Abstract translation: 本发明通过增强移动电话接收越区切换指示消息的能力来增加软越区切换的成功率，该越区切换指示消息识别被分配以使候选基站能够与移动电话通信的业务信道。 具体地说，通过使用候选基站在属于候选基站并被移动电话收听的通信信道上发送越区切换指示消息，增强了移动电话的上述能力。 在从活动组基站发送的信号在移动电话处具有低信噪比的情况下，从候选基站发送的信号在移动电话处可能具有较高的信噪比。 在这些情况下，从候选基站发送HD消息增加了越区切换方向消息的副本将被移动电话成功接收的可能性，从而提高了软越区切换的成功率。

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