公开(公告)号：US08014753B2

公开(公告)日：2011-09-06

申请号：US10893216

申请日：2004-07-19

申请人： Ken L. Cheung ,  Chen-Huan Chiang ,  Kenneth Y. Ho ,  John A. Andersen ,  Bradford G. Van Treuren ,  Robert W. Barr ,  Victor J. Velasco ,  Dante De Rogatis

发明人： Ken L. Cheung ,  Chen-Huan Chiang ,  Kenneth Y. Ho ,  John A. Andersen ,  Bradford G. Van Treuren ,  Robert W. Barr ,  Victor J. Velasco ,  Dante De Rogatis

IPC分类号： H04M11/00

CPC分类号： H04W24/04 ,  H04W24/00 ,  H04W88/08

摘要： A distributed test architecture of transmitting boundary scan Test Access Port (TAP_signals over a serial channel is disclosed. The architecture facilitates the system testing and remote field update of distributed base stations in a wireless network. The distributed test architecture enables system testing as if the distributed units are on a backplane within the same chassis by creating a plurality of logical connections between the distributed unit and the test bus using a single bit fiber line and a five bit TAP test bus.

摘要翻译： 发布边界扫描测试访问端口（TAP_signals，通过串行通道）的分布式测试架构，该架构便于无线网络中分布式基站的系统测试和远程现场更新，分布式测试架构使系统测试成为分布式 通过使用单位光纤线路和五位TAP测试总线在分布式单元和测试总线之间创建多个逻辑连接，单元位于同一机箱内的背板上。

公开(公告)号：US5195090A

公开(公告)日：1993-03-16

申请号：US727498

申请日：1991-07-09

申请人： Brian D. Bolliger ,  Talmage P. Bursh, Jr. ,  Marc K. Dennison ,  Michael J. English ,  Charles Y. Farwell ,  Michel L. Hearn ,  Richard M. Heidebrecht ,  Kelvin K. Ho ,  Kenneth Y. Ho ,  David M. Kissel ,  Paul E. Miller ,  Richard D. Miller ,  Alan S. Mulberg ,  LaJeana N. Roberts ,  Michael A. Smith ,  Kenneth F. Smolik ,  Douglas A. Spencer ,  Kenneth W. Strom ,  John S. Thompson ,  Richard A. Windhausen

发明人： Brian D. Bolliger ,  Talmage P. Bursh, Jr. ,  Marc K. Dennison ,  Michael J. English ,  Charles Y. Farwell ,  Michel L. Hearn ,  Richard M. Heidebrecht ,  Kelvin K. Ho ,  Kenneth Y. Ho ,  David M. Kissel ,  Paul E. Miller ,  Richard D. Miller ,  Alan S. Mulberg ,  LaJeana N. Roberts ,  Michael A. Smith ,  Kenneth F. Smolik ,  Douglas A. Spencer ,  Kenneth W. Strom ,  John S. Thompson ,  Richard A. Windhausen

IPC分类号： H04J3/06 ,  H04L7/00 ,  H04Q11/04 ,  H04W36/18

CPC分类号： H04W36/18 ,  H04J3/0632

摘要： A wireless-access communications system, such as a CDMA cellular radio-telephone system (FIG. 2), comprises a packet-switched communications network (202, 207, 201) that interconnects cells (base stations; 202) with each other and with the public telephone network (100). Traffic of individual calls is packetized, and packet-bearing frames (300 in FIG. 7) of a plurality of calls are then statistically multiplexed and frame-relayed through the network to yield the high capacity, efficiency, and speed of traffic transport and handoff required for a CDMA cellular system. At each call processing unit (264 in FIG. 5), individual calls are handled by individual service circuits (602 and 612) which perform speech-processing functions such as coding and decoding, tone insertion, and echo cancellation, and packet-to-circuit-switched-PCM traffic conversion. Processors (602) adapt call processing unit timing to compensate for asynchrony between cells and call processing units and variations in call path transmission delays. Cell-to-cell communications, fixed call path addressing, and packetized control message transfers ensure that the same service circuit handles a call through even multiple soft handoffs (FIGS. 27-29) and efficiently communicates simultaneously with all cells involved in the handoff without involvement of system control entities and negative effect on system call-handling capacity. Both coded (packet-switched) and uncoded (circuit-switched) radio-telephone traffic are accommodated side-by-side. Wherever possible, existing and proven technology and component units are used to achieve low cost and high reliability.