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    Frame structure for an adaptive modulation wireless communication system
    1.
    发明申请
    Frame structure for an adaptive modulation wireless communication system 失效

    公开(公告)号：US20050058098A1

    公开(公告)日：2005-03-17

    申请号：US10962957

    申请日：2004-10-12

    申请人： Israel Klein ,  Kenneth Stanwood ,  Steve Pollmann ,  Frederick Price ,  Rami Hadar ,  Eli Arviv ,  David Gazelle ,  Sheldon Gilbert

    发明人： Israel Klein ,  Kenneth Stanwood ,  Steve Pollmann ,  Frederick Price ,  Rami Hadar ,  Eli Arviv ,  David Gazelle ,  Sheldon Gilbert

    IPC分类号： H04B7/26 ,  H04J3/00 ,  H04L1/00 ,  H04L25/03 ,  H04L27/00 ,  H04Q7/00

    CPC分类号： H04B7/2656 ,  H04L1/0003 ,  H04L1/0004 ,  H04L1/0057 ,  H04L1/0059 ,  H04L1/0065 ,  H04L1/0083 ,  H04L25/03038 ,  H04L27/0008 ,  H04L2025/0342 ,  H04L2025/03477 ,  H04W72/0446 ,  H04W88/02 ,  H04W88/08 ,  Y02D50/10

    摘要： A method of assigning downlink time slots to receive units where the units may generate data using different modulation schemes. The method preferably assigns the downlink time slots as a function of the complexity of modulation schemes employed by the units. Further, the method preferably assigns the time slots from the least complex modulation scheme to the most complex scheme. The method may further assign uplink time slots to transmit units where the transmit units may generate data using different modulation schemes. The method preferably assigns the uplink time slots as a function of the complexity of modulation schemes employed by the uplink units. Further, the method preferably assigns the uplink time slots from the least complex modulation scheme to the most complex scheme. In other embodiments, the downlink time slots are assigned as a function of the bit per symbol rate employed by the receive units, preferably from the lowest bit per symbol rate to the highest bit per symbol rate. Further, the uplink time slots are assigned as a function of the bit per symbol rate employed by the transmit units, preferably from the lowest bit per symbol rate to the highest bit per symbol rate. The present invention is also a method of simplifying the encoding of a predetermined number of bits of data into frames. The method adds error coding bits so that a ratio of the frame length times the baud rate of the frame times the bit packing ratio of the data divided the total bits of data is always an integer. The method may also convolutionally encode the bits of data so that the same equation is also always an integer. The present invention is also a method of updating the weights of a FIR filter where the filter processes symbols having variable modulation rates. When the modulation rate of the incoming symbols changes, the weights corresponding to the first symbol having the new modulation rate are changed based as the symbol propagates through the filter.

    Frame structure for an adaptive modulation wireless communication system
    5.
    发明授权
    Frame structure for an adaptive modulation wireless communication system 有权

    公开(公告)号：US06804211B1

    公开(公告)日：2004-10-12

    申请号：US09365917

    申请日：1999-08-03

    申请人： Israel Jay Klein ,  Kenneth L. Stanwood ,  Steve Pollmann ,  Frederick W. Price ,  Rami Hadar ,  Eli Arviv ,  David Gazelle ,  Sheldon Gilbert

    发明人： Israel Jay Klein ,  Kenneth L. Stanwood ,  Steve Pollmann ,  Frederick W. Price ,  Rami Hadar ,  Eli Arviv ,  David Gazelle ,  Sheldon Gilbert

    IPC分类号： H04Q700

    CPC分类号： H04B7/2656 ,  H04L1/0003 ,  H04L1/0004 ,  H04L1/0057 ,  H04L1/0059 ,  H04L1/0065 ,  H04L1/0083 ,  H04L25/03038 ,  H04L27/0008 ,  H04L2025/0342 ,  H04L2025/03477 ,  H04W72/0446 ,  H04W88/02 ,  H04W88/08 ,  Y02D50/10

    摘要： A method of assigning downlink time slots to receive units where the units may generate data using different modulation schemes. The method preferably assigns the downlink time slots as a function of the complexity of modulation schemes employed by the units. Further, the method preferably assigns the time slots from the least complex modulation scheme to the most complex scheme. The method may further assign uplink time slots to transmit units where the transmit units may generate data using different modulation schemes. The method preferably assigns the uplink time slots as a function of the complexity of modulation schemes employed by the uplink units. Further, the method preferably assigns the uplink time slots from the least complex modulation scheme to the most complex scheme. In other embodiments, the downlink time slots are assigned as a function of the bit per symbol rate employed by the receive units, preferably from the lowest bit per symbol rate to the highest bit per symbol rate. Further, the uplink time slots are assigned as a function of the bit per symbol rate employed by the transmit units, preferably from the lowest bit per symbol rate to the highest bit per symbol rate. The present invention is also a method of simplifying the encoding of a predetermined number of bits of data into frames. The method adds error coding bits so that a ratio of the frame length times the baud rate of the frame times the bit packing ratio of the data divided the total bits of data is always an integer. The method may also convolutionally encode the bits of data so that the same equation is also always an integer. The present invention is also a method of updating the weights of a FIR filter where the filter processes symbols having variable modulation rates. When the modulation rate of the incoming symbols changes, the weights corresponding to the first symbol having the new modulation rate are changed based as the symbol propagates through the filter.

    Adaptive time division duplexing method and apparatus for dynamic bandwidth allocation within a wireless communication system
    8.
    发明申请
    Adaptive time division duplexing method and apparatus for dynamic bandwidth allocation within a wireless communication system 有权
    用于无线通信系统内的动态带宽分配的自适应时分双工方法和装置

    公开(公告)号：US20050243745A1

    公开(公告)日：2005-11-03

    申请号：US11114662

    申请日：2005-04-26

    申请人： Kenneth Stanwood ,  James Mollenauer ,  Israel Klein ,  Sheldon Gilbert ,  Rami Hadar

    发明人： Kenneth Stanwood ,  James Mollenauer ,  Israel Klein ,  Sheldon Gilbert ,  Rami Hadar

    IPC分类号： H04J3/00 ,  H04B7/212 ,  H04L12/28 ,  H04L12/56 ,  H04Q11/04 ,  H04W4/06 ,  H04W28/04 ,  H04W28/06 ,  H04W28/14 ,  H04W28/20 ,  H04W72/04 ,  H04W74/00 ,  H04W74/06 ,  H04J3/22 ,  H04J3/16

    CPC分类号： H04W72/0413 ,  H04L5/0064 ,  H04L5/0092 ,  H04L2012/5607 ,  H04L2012/561 ,  H04Q11/0478 ,  H04W4/06 ,  H04W8/24 ,  H04W28/0268 ,  H04W28/06 ,  H04W28/14 ,  H04W56/0005 ,  H04W60/00 ,  H04W72/0406 ,  H04W72/042 ,  H04W72/044 ,  H04W72/0453 ,  H04W72/048 ,  H04W72/10 ,  H04W74/06

    摘要： An adaptive time division duplexing (ATDD) method and apparatus for duplexing transmissions on a communication link in wireless communication systems. Communication link efficient is enhanced by dynamically adapting to the uplink and downlink bandwidth requirements of the communication channels. Time slots are flexibly and dynamically allocated for uplink or downlink transmissions depending upon the bandwidth needs of a channel. Communication link bandwidth requirements are continuously monitored using sets of predetermined bandwidth requirement parameters. Communication channels are configured to have either symmetric or asymmetric uplink/downlink bandwidths depending upon the needs of the channel. Channel bandwidth asymmetry can be configured alternatively in favor of the uplink transmissions (i.e., more time slots are allocated for uplink transmissions than for downlink transmissions) or in favor of the downlink transmissions (i.e., more time slots are allocated for downlink transmissions than for uplink transmissions). A myriad of time slot allocation schemes are possible. One simplified time slot allocation scheme uses a “frame-based” approach. A preferred channel bandwidth analysis technique is disclosed which monitors and updates bandwidth requirement parameters associated with communication sessions, base stations and cell cluster controllers. In accordance with this technique, a communication session is preferably assigned both an “initial” and an “actual” set of bandwidth parameters.

    摘要翻译： 一种用于在无线通信系统中的通信链路上双工传输的自适应时分双工（ATDD）方法和装置。 通过动态地适应通信信道的上行链路和下行链路带宽需求来增强通信链路的有效性。 根据信道的带宽需求，时隙被灵活地动态分配用于上行链路或下行链路传输。 使用预定带宽需求参数的集合来连续监视通信链路带宽要求。 根据信道的需要，通信信道被配置为具有对称或不对称的上行链路/下行链路带宽。 信道带宽不对称可以配置为有利于上行链路传输（即，为上行链路传输分配更多的时隙而不是针对下行链路传输）或有利于下行链路传输（即，为下行链路传输分配更多的时隙而不是上行链路 传输）。 无数次时隙分配方案是可能的。 一个简化的时隙分配方案使用“基于帧”的方法。 公开了一种优选的信道带宽分析技术，其监测和更新与通信会话，基站和小区集群控制器相关联的带宽需求参数。 根据该技术，通信会话优选地分配“初始”和“实际”带宽参数集合。