公开(公告)号：US06418148B1

公开(公告)日：2002-07-09

申请号：US09121149

申请日：1998-07-23

申请人： Sarath Kumar ,  Sanjiv Nanda ,  Stanislav Vitebskiy

发明人： Sarath Kumar ,  Sanjiv Nanda ,  Stanislav Vitebskiy

IPC分类号： H04J316

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

摘要： 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 request 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 backoff 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.

摘要翻译： 附加带宽的突发（例如，一个或多个补充信道或具有可变带宽的信道）被分配给蜂窝电信系统中的用户（例如，高速数据用户）。 分配附加带宽的请求可以是先前拒绝的请求之后的初始请求，持续突发的继续请求或重试请求。 无论如何，确定是否授予或拒绝该请求。 如果请求被拒绝，则在指定的退避时间之后给出指令以提交重试请求。 本发明可以使用异步方法或同步方法来实现。 根据异步方法，所有请求都是异步处理的。 根据同步方法，异步处理初始请求，但是在与特定时隙一致的时代，同步处理继续请求和重试请求。

公开(公告)号：US06757270B1

公开(公告)日：2004-06-29

申请号：US09330582

申请日：1999-06-11

申请人： Sarath Kumar ,  Sanjiv Nanda ,  Harvey Rubin ,  Stanislav Vitebskiy

发明人： Sarath Kumar ,  Sanjiv Nanda ,  Harvey Rubin ,  Stanislav Vitebskiy

IPC分类号： H04B716

CPC分类号： H04W52/12 ,  H04W36/18 ,  H04W52/54

摘要： 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. In particular, for the forward direction, the FSD function transmits forward-link data only to one base station, which is solely responsible for controlling the forward-link air interface with the corresponding 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.

摘要翻译： 后向架构有效地减少CDMA无线通信系统上的前向链路和反向链路数据传输的重新启动时间，通过依赖于帧选择/分配（FSD）功能和适当的 基站 具体来说，FSD功能只向一个基站发送前向链路数据，该基站单独负责控制与对应的移动单元的前向链路空中接口。 对于相反方向，从移动单元接收反向链路数据帧的每个基站向帧分配时间标签，将帧划分成一个或多个数据分组，为每个数据分组分配不同的序列号，以及 将数据包通过后端传送到FSD功能，所有这些都与没有与正在与该移动单元进行反向链路软越区切换的任何其他基站同时进行。

公开(公告)号：US06507572B1

公开(公告)日：2003-01-14

申请号：US09332274

申请日：1999-06-11

申请人： Sarath Kumar ,  Sanjiv Nanda ,  Harvey Rubin ,  Stanislav Vitebskiy

发明人： Sarath Kumar ,  Sanjiv Nanda ,  Harvey Rubin ,  Stanislav Vitebskiy

IPC分类号： H04Q720

CPC分类号： H04W52/143 ,  H04W36/18 ,  H04W52/146 ,  H04W52/40 ,  H04W52/44 ,  H04W52/50

摘要： A back haul architecture enables efficient primary transfer (i.e., transfer of the designation of primary base station from one base station to another). A frame selection/distribution (FSD) function queues packets of forward-link data—to which sequence numbers have been assigned—for packet-mode transmission over the back haul only to one base station—the current primary base station—where the packets are again queued for over-the-air transmission to the mobile unit. If and when it becomes appropriate to transfer the designation of primary base station to another base station, there may still be packets of data queued at the old primary base station awaiting transmission to the mobile unit. The old primary base station sends a message to the new primary base station indicating a particular sequence number that identifies the remaining packets of forward-link data queued at the old primary base station. The new primary base station then sends a message to the FSD function requesting transmission of those packets of forward-link data corresponding to the particular sequence number. The FSD function then transmits those requested packets of forward-link data to the new primary base station, which queues the requested packets for over-the-air transmission to the mobile unit. In this way, transmission of all of the forward-link data to the mobile unit is enabled without having to transmit the remaining queued packets of forward-link data from the old primary base station to the new primary base station over the back haul, thereby providing an efficient mechanism for primary transfer in wireless communications systems that support forward-link data transmissions only in simplex mode.

摘要翻译： 后向架构使得能够有效地进行一次传送（即将主基站的指定从一个基站传送到另一个基站）。 帧选择/分配（FSD）功能将前向链路数据的分组排队到序列号已经被分配的分组模式 - 用于仅在背行上的分组模式传输到一个基站 - 当前主基站 - 其中分组是 再次排队到空中传输到移动单元。 如果当将主基站的指定传送到另一基站变得适当时，仍然可能在旧的主基站处排队等待传输到移动单元的数据分组。 旧的主基站向新的主基站发送消息，指示表示在旧主基站排队的前向链路数据的剩余分组的特定序列号。 然后，新的主基站向FSD功能发送一个请求发送与特定序列号对应的前向链路数据的分组的消息。 然后，FSD功能将所请求的前向链路数据分组发送到新的主基站，该主基站将所请求的分组排队到空中传输到移动单元。 以这种方式，可以使得所有前向链路数据向移动单元的传输得以实现，而无需将后续链路数据的剩余排队分组从旧的主基站传输到新的主基站，从而 提供了一种仅在单工模式下支持前向链路数据传输的无线通信系统中的主要传输的有效机制。