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1. 发明申请

US20070042786A1 Dynamic channel allocation in multiple-access communication systems 有权
公开(公告)号：US20070042786A1
公开(公告)日：2007-02-22
申请号：US11507789
申请日：2006-08-21
申请人： Gopal Chillariga , Rohit Kaushal , Bhupal Dharia , Lance Uyehara , Gerhard Koepf , Kevin Raack , Ujjal Ghoshtagore
发明人： Gopal Chillariga , Rohit Kaushal , Bhupal Dharia , Lance Uyehara , Gerhard Koepf , Kevin Raack , Ujjal Ghoshtagore
IPC分类号： H04Q7/20
CPC分类号： H04W28/26 , H04W28/18 , H04W48/16 , H04W72/04
摘要： Dynamic allocation of communication channels among communication units (CU) in a communications system. Dynamic channel allocation employs a reservation set for reserving channels and an allocation set corresponding to the reservation set for receiving allocated channels. The reservation set and the allocation set are changed dynamically as a function of network parameters to control the dynamic channel operation. Reservation set information is broadcast downlink to multiple users to reserve an allocation set of uplink radio resources for specific ones of the users. The system uses a modification of the packet data channel (PDCH) of a GPRS/EGPRS or EDGE system which employs an Uplink Status Flag (USF) on each PDCH downlink radio block. The downlink reservation set information is commonly received by all users in the group of users. Allocation delay, bandwidth efficiency and other system parameters are optimized.

2. 发明申请

US20060104334A1 Virtual cell mapping in macrodiverse wireless networks with frequency hopping 有权
公开(公告)号：US20060104334A1
公开(公告)日：2006-05-18
申请号：US11288656
申请日：2005-11-28
申请人： Morris Hervey , Ujjal Ghoshtagore , Archana Somasekhara
发明人： Morris Hervey , Ujjal Ghoshtagore , Archana Somasekhara
IPC分类号： H04B1/713
CPC分类号： H04B7/022 , H04B1/7143 , H04B1/715 , H04B7/0602 , H04B2001/7154 , H04W16/10 , H04W36/08
摘要： A communication system for communication with mobile stations through a plurality of base stations at macrodiverse locations and with frequency hopping (FH). Two or more adjacent base stations communicate with mobile stations in a region between the adjacent base stations using coordinated orthogonal frequency hopping sequences. The communication system operates with virtual cells formed of physical sectors from adjacent base stations. Where base stations each operate with three sectors, virtual cells use three adjacent sectors of three adjacent base stations, respectively, and the coordinated orthogonal frequency hopping sequences are used for the adjacent sectors of each of the virtual cells. For GSM, the coordinated orthogonal frequency hopping sequences in each virtual cell are defined by a single hopping sequence number (HSN) and a set of mobile allocation index offsets (MAIOs). Fast macrodiversity switching is employed in combination with FH.

3. 发明申请

US20060078039A1 Predictive collision avoidance in macrodiverse wireless networks with frequency hopping using switching 失效
公开(公告)号：US20060078039A1
公开(公告)日：2006-04-13
申请号：US11288657
申请日：2005-11-28
申请人： Naveen Dhar , Lance Uyehara , Ujjal Ghoshtagore , Gerhard Koepf , Jingqing Xiao
发明人： Naveen Dhar , Lance Uyehara , Ujjal Ghoshtagore , Gerhard Koepf , Jingqing Xiao
IPC分类号： H04B1/713
CPC分类号： H04B7/022 , H04B1/7143 , H04B1/715 , H04B7/0602 , H04B2001/7154 , H04W16/10 , H04W36/08
摘要： A communication system using fast macrodiversity switching (FMS) and frequency hopping (FH) for wireless signals including downlink signals to and uplink signals from mobile stations. Frequency hopping sequences are determined for the uplink and downlink signals for the mobile stations. A plurality of transceiver stations employ broadcast channels and dedicated channels for communications with the mobile stations. A zone manager controls fast macrodiversity switching of dedicated channels among the mobile stations while broadcast channels remain unswitched. The zone manager extracts frequency hopping information to form predictions of dedicated channel collisions, and based upon the predictions, controls the dynamic switching of dedicated channels to avoid collisions.

4. 发明申请

US20070066330A1 FAST MACRODIVERSITY SWITCHING IN MOBILE WIRELESS NETWORKS 有权
标题翻译：移动无线网络中的快速MACRODIVERSITY切换
公开(公告)号：US20070066330A1
公开(公告)日：2007-03-22
申请号：US11469380
申请日：2006-08-31
申请人： Bhupal Dharia , Gopal Chillariga , Ujjal Ghoshtagore , Rohit Kaushal , Gerhard Koepf , Lance Uyehara
发明人： Bhupal Dharia , Gopal Chillariga , Ujjal Ghoshtagore , Rohit Kaushal , Gerhard Koepf , Lance Uyehara
IPC分类号： H04Q7/20 , H04B7/00
CPC分类号： H04B7/022 , H04B1/7143 , H04B1/715 , H04B7/0602 , H04B2001/7154 , H04W16/10 , H04W36/08
摘要： Fast macrodiversity switching (FMS) of channels that employ interleaving. The fast macrodiversity switching dynamically switches radio links used for traffic and control channels for a mobile station among a number of base transceiver stations (BTS) without switching the radio resource, using the same frequency and time slot combination (TDMA) in an environment where interleaving is occurring. The fast macrodiversity switching of channels and interleave processing is under control of an interleave manager which is distributed among zone managers. The control by the host and assistant zone managers includes switching down-link signals to and up-link signals from mobile stations among base transceiver stations which include broadcast channels (non-switched) and dedicated (switched) channels that employ interleaving. The dedicated channels are switched as frequently as a signal switch time which can be the frame rate of the up-link signals. The switch time is typically less than 1 second for mobile stations in a GSM system. The interleave processing is implemented in a GSM wireless system for TCH/FS Processing, FACCH/FS Processing and SACCH/FS Processing.
摘要翻译：采用交错的通道的快速宏分集切换（FMS）。快速宏分集交换在多个基站收发台（BTS）中动态地切换用于移动站的业务和控制信道的无线电链路，而无需在交换的环境中使用相同的频率和时隙组合（TDMA）来切换无线电资源正在发生。信道和交织处理的快速宏分集交换是在区域管理器之间分配的交织管理器的控制下进行的。主机和辅助区域管理器的控制包括在包括采用交织的广播信道（非交换）和专用（交换））信道的基站收发台之间切换来自移动台的下行链路信号和上行链路信号。专用信道频繁地切换为可以是上行链路信号的帧速率的信号切换时间。 GSM系统中的移动台的切换时间通常小于1秒。交织处理在用于TCH / FS处理，FACCH / FS处理和SACCH / FS处理的GSM无线系统中实现。

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