公开(公告)号：US6097817A

公开(公告)日：2000-08-01

申请号：US988262

申请日：1997-12-10

申请人： Izzet M. Bilgic ,  Narayan P. Menon

发明人： Izzet M. Bilgic ,  Narayan P. Menon

IPC分类号： H04L12/28 ,  H04L12/56 ,  H04L29/06 ,  H04W4/18 ,  H04W12/02 ,  H04W12/06 ,  H04W74/00 ,  H04W76/02 ,  H04W84/14 ,  H04W92/22 ,  H04K1/10

CPC分类号： H04W76/02 ,  H04L63/0428 ,  H04L63/08 ,  H04W84/14 ,  H04W12/02 ,  H04W12/04 ,  H04W4/18 ,  H04W74/00 ,  H04W92/22

摘要： A communication system having a wireless trunk for connecting multiple phone lines over wireless communication links to a cellular network comprises a central telephone switch, such as a private branch exchange or key system, connected through one or more trunk lines to a wireless access communication unit. The wireless access communication unit preferably comprises a separate subscriber interface for each trunk line from the central telephone switch. The wireless access communication unit collects data from each of the subscriber interfaces, formats the data into a format compatible with an over-the-air protocol, and transmits the information over one or more wireless channels to a cellular base station. The wireless access communication unit thereby connects calls received from the central telephone switch's trunk lines over a wireless trunk to a network. A controller within the wireless access communication unit interfaces the subscriber interfaces with a radio transceiver, and assists in the conversion of data from a format suitable for wireless transmission. Authentication is carried out separately for each of the subscriber interfaces, thereby allowing the wireless access communication unit to represent itself as multiple individual subscribers to the network. Upon each initial registration, each subscriber interface derives its own ciphering key from a stored user key and uses it thereafter for encryption and decryption.

摘要翻译： 具有用于通过无线通信链路将多个电话线连接到蜂窝网络的无线干线的通信系统包括通过一个或多个干线连接到无线接入通信单元的中央电话交换机，例如专用小交换机或密钥系统。 无线接入通信单元优选地包括用于来自中央电话交换机的每条中继线的单独的用户接口。 无线接入通信单元从每个用户接口收集数据，将数据格式化成与空中协议兼容的格式，并通过一个或多个无线信道将信息发送到蜂窝基站。 因此，无线接入通信单元将通过无线中继线从中央电话交换机的干线接收的呼叫连接到网络。 无线接入通信单元内的控制器将用户接口与无线电收发器接口，并协助从适合无线传输的格式转换数据。 为每个用户接口分别进行认证，从而允许无线接入通信单元将其自身表示为网络的多个个体用户。 在每个初始注册时，每个用户界面从存储的用户密钥中导出其自己的加密密钥，并在此之后使用它进行加密和解密。

公开(公告)号：US07322041B2

公开(公告)日：2008-01-22

申请号：US10202113

申请日：2002-07-24

申请人： Izzet M. Bilgic ,  Narayan P. Menon

发明人： Izzet M. Bilgic ,  Narayan P. Menon

IPC分类号： H04L9/12 ,  H04M1/66 ,  H04Q7/20 ,  H04Q7/28

CPC分类号： H04W12/06 ,  H04L63/0428 ,  H04L63/08 ,  H04W4/18 ,  H04W8/26 ,  H04W12/02 ,  H04W60/00 ,  H04W74/00 ,  H04W76/10 ,  H04W84/14

摘要： A communication system having a wireless trunk for connecting multiple phone lines over wireless communication links to a cellular network comprises a central telephone switch, such as a private branch exchange or key system, connected through one or more trunk lines to a wireless access communication unit. The wireless access communication unit preferably comprises a separate subscriber interface for each trunk line from the central telephone switch. The wireless access communication unit collects data from each of the subscriber interfaces, formats the data into a format compatible with an over-the-air protocol, and transmits the information over one or more wireless channels to a cellular base station. The wireless access communication unit thereby connects calls received from the central telephone switch's trunk lines over a wireless trunk to a network. A controller within the wireless access communication unit interfaces the subscriber interfaces with a radio transceiver, and assists in the conversion of data from a format suitable for wireless transmission. Authentication is carried out separately for each of the subscriber interfaces, thereby allowing the wireless access communication unit to represent itself as multiple individual subscribers to the network. Upon each initial registration, each subscriber interface derives its own ciphering key from a stored user key and uses it thereafter for encryption and decryption.

摘要翻译： 具有用于通过无线通信链路将多个电话线连接到蜂窝网络的无线干线的通信系统包括通过一个或多个干线连接到无线接入通信单元的中央电话交换机，例如专用小交换机或密钥系统。 无线接入通信单元优选地包括用于来自中央电话交换机的每条中继线的单独的用户接口。 无线接入通信单元从每个用户接口收集数据，将数据格式化成与空中协议兼容的格式，并通过一个或多个无线信道将信息发送到蜂窝基站。 因此，无线接入通信单元将通过无线中继线从中央电话交换机的干线接收的呼叫连接到网络。 无线接入通信单元内的控制器将用户接口与无线电收发器接口，并协助从适合无线传输的格式转换数据。 为每个用户接口分别进行认证，从而允许无线接入通信单元将其自身表示为网络的多个个体用户。 在每个初始注册时，每个用户界面从存储的用户密钥中导出其自己的加密密钥，并在此之后使用它进行加密和解密。

公开(公告)号：US06301249B1

公开(公告)日：2001-10-09

申请号：US09128739

申请日：1998-08-04

申请人： Carl Mansfield ,  Izzet M. Bilgic ,  Benjamin K. Gibbs ,  Sherman L. Gavette

发明人： Carl Mansfield ,  Izzet M. Bilgic ,  Benjamin K. Gibbs ,  Sherman L. Gavette

IPC分类号： H04L1228

CPC分类号： H04L1/1635 ,  H04L1/1806 ,  H04W4/12 ,  H04W28/06

摘要： A method of transmission error control includes transmitting at least one frame of packet data to a receiving entity during each of a plurality of time frames, and receiving a plurality of responsive messages from the receiving entity. Each of the responsive messages identifies frames of data successfully received during a current time frame and during prior time frames. The method also includes retransmitting each of the frames of data that the responsive message does not indicate as successfully received.

摘要翻译： 传输错误控制的方法包括在多个时间帧的每一个期间向接收实体发送分组数据的至少一帧，以及从接收实体接收多个响应消息。 每个响应消息标识在当前时间帧期间和之前的时间帧期间成功接收的数据帧。 该方法还包括重传响应消息未指示成功接收的每个数据帧。

公开(公告)号：US06751456B2

公开(公告)日：2004-06-15

申请号：US09819460

申请日：2001-03-27

申请人： Izzet M. Bilgic

发明人： Izzet M. Bilgic

IPC分类号： H04Q720

CPC分类号： H04W88/02 ,  H04W36/08 ,  H04W36/36 ,  H04W48/16 ,  H04W60/00 ,  H04W72/00 ,  H04W72/02 ,  H04W76/10 ,  H04W80/00 ,  H04W88/08

摘要： A computer program for a user in a wireless communication system to communicate on the system. The communication protocol embodied in the computer program enables the user to acquire a channel on the base station in the system and register with a base station on the system. The communication protocol embodied in the computer program also enables the user to place and receive calls on the communication system. The communication protocol embodied in the computer program also provides the user a handover procedure for handing over its call to another base station in the system. The computer program is comprised of a main controller task and various other tasks, also called subtasks, which are activated by the main controller task. These subtasks are each designed to perform a protocol function for the user on the communication system.

摘要翻译： 一种用于无线通信系统中的用户在系统上通信的计算机程序。 计算机程序中体现的通信协议使得用户能够在系统中的基站上获取信道并向系统上的基站注册。 计算机程序中体现的通信协议还使得用户能够在通信系统上发出和接收呼叫。 计算机程序中体现的通信协议还为用户提供了将其呼叫转交给系统中的另一个基站的切换过程。计算机程序包括主控制器任务和被称为子任务的各种其他任务，也被称为子任务 由主控制器任务。 这些子任务被设计成在通信系统上为用户执行协议功能。

公开(公告)号：USH2106H1

公开(公告)日：2004-07-06

申请号：US09159714

申请日：1998-09-24

申请人： Izzet M. Bilgic ,  Sherman Gavette ,  Steve Howser

发明人： Izzet M. Bilgic ,  Sherman Gavette ,  Steve Howser

IPC分类号： H04J100

摘要： A virtual FDD base station comprises two base station sub-units each of which comprise a base station transmitter and a base station receiver. The first base station sub-unit transmits base-to-user messages to user stations only during a first half of a repeating time frame, and receives user-to-base messages from the user stations only during a second half of the time frame. The second base station sub-unit is preferably collocated with the first base station sub-unit and synchronized thereto, and transmits base-to-user messages to user stations only during half of the time frame, while receiving user-to-base messages from the user stations only during the other half of the time frame. Duplex communication channels are preferably defined by correlating a base transmit time slot with a user transmit time slot, which are separated by a sufficient amount of time to allow transmit/receive switching by a user station. The base station sub-units may be configured so that one of the sub-units transmits continuously and the other receives continuously, thereby providing full FDD functionality. In another embodiment, a TDD base station is adapted to support FDD communication. An over-the-air controller switches the transmit and receive operating frequency in accordance with a defined time slot communication pattern comprising base transmit time slots and user transmit time slots, and at the same time ensures that the base transmitter and base receiver are appropriately switched back and forth for connection with the base station antenna.

公开(公告)号：US06580906B2

公开(公告)日：2003-06-17

申请号：US08988505

申请日：1997-12-10

申请人： Izzet M. Bilgic ,  Narayan P. Menon

发明人： Izzet M. Bilgic ,  Narayan P. Menon

IPC分类号： H04Q722

CPC分类号： H04W12/06 ,  H04L63/0428 ,  H04L63/08 ,  H04W4/18 ,  H04W8/26 ,  H04W12/02 ,  H04W60/00 ,  H04W74/00 ,  H04W76/10 ,  H04W84/14

摘要： A communication system having a wireless trunk for connecting multiple phone lines over wireless communication links to a cellular network comprises a central telephone switch, such as a private branch exchange or key system, connected through one or more trunk lines to a wireless access communication unit. The wireless access communication unit preferably comprises a separate subscriber interface for each trunk line from the central telephone switch. The wireless access communication unit collects data from each of the subscriber interfaces, formats the data into a format compatible with an over-the-air protocol, and transmits the information over one or more wireless channels to a cellular base station. The wireless access communication unit thereby connects calls received from the central telephone switch's trunk lines over a wireless trunk to a network. A controller within the wireless access communication unit interfaces the subscriber interfaces with a radio transceiver, and assists in the conversion of data from a format suitable for wireless transmission. Authentication is carried out separately for each of the subscriber interfaces, thereby allowing the wireless access communication unit to represent itself as multiple individual subscribers to the network. Upon each initial registration, each subscriber interface derives its own ciphering key from a stored user key and uses it thereafter for encryption and decryption.

公开(公告)号：US06477382B1

公开(公告)日：2002-11-05

申请号：US09592020

申请日：2000-06-12

申请人： Carl Mansfield ,  Izzet M. Bilgic ,  Benjamin K. Gibbs ,  Sherman L. Gavette

发明人： Carl Mansfield ,  Izzet M. Bilgic ,  Benjamin K. Gibbs ,  Sherman L. Gavette

IPC分类号： H04Q720

CPC分类号： H04W68/00 ,  H04W52/0216 ,  H04W72/12

摘要： A system and method including a flexible paging protocol which adjusts the allocation of resources for paging in response to the amount of actual paging traffic, by increasing resources for paging when paging traffic is heavy and decreasing them when paging traffic is light. A base station transmits a paging packet message over a paging broadcast channel containing a set of paging messages and a next page pointer. The next page pointer identifies when the next set of paging packet message will be transmitted. A user station monitoring the paging channel receives the next page pointer, and, if not being paged, goes to sleep until the next paging packet message is due. When paging traffic is light, paging messages are sent infrequently, freeing up base station resources and allowing the user station to remain asleep longer. When paging traffic is heavy, paging messages are sent more frequently, ensuring rapid response to the pages and reducing the probability of a missed call. The protocol is particularly well suited for use in TDMA environments. The next page pointer may be used in conjunction with a system which also employs a next slot pointer for increasing the speed of control traffic transactions. In a wireless packet-oriented communication system, the base station receives data packets over a backhaul connection, transmits a paging message to the mobile end system, divides the data packet into a sequence of message frames, and transmits the message frames to the mobile end system in assigned time slots.

摘要翻译： 一种包括灵活寻呼协议的系统和方法，通过在寻呼业务量较大时增加用于寻呼的资源，并且当寻呼业务量较轻时减少寻呼业务时，响应于实际寻呼业务量来调整用于寻呼的资源分配。 基站通过包含一组寻呼消息和下一页指针的寻呼广播信道来发送寻呼分组消息。 下一页指针标识下一组寻呼分组消息将被发送的时间。 监视寻呼信道的用户站接收下一页指针，并且如果不被寻呼，则进入休眠状态，直到下一寻呼分组消息到期为止。 当寻呼业务较轻时，寻呼消息不经常发送，释放基站资源，并允许用户站保持睡眠更长时间。 当寻呼流量较大时，寻呼消息的发送频率更高，确保对页面的快速响应，并降低未接来电的可能性。 该协议特别适用于TDMA环境。 下一页指针可以与系统一起使用，该系统还采用下一个时隙指针来增加控制业务事务的速度。 在无线分组定向通信系统中，基站通过回程连接接收数据分组，向移动终端系统发送寻呼消息，将数据分组划分成消息帧序列，并将消息帧发送到移动终端 系统在分配的时隙。

公开(公告)号：US06243365B1

公开(公告)日：2001-06-05

申请号：US09129260

申请日：1998-08-04

申请人： Carl Mansfield ,  Izzet M. Bilgic ,  Benjamin K. Gibbs ,  Sherman L. Gavette

发明人： Carl Mansfield ,  Izzet M. Bilgic ,  Benjamin K. Gibbs ,  Sherman L. Gavette

IPC分类号： H04J324

CPC分类号： H04W76/25

摘要： A method for transmission continuation control includes establishing a physical transmission link between a first entity and a second entity, and transmitting a first user message from one of the first and second entities to the other of the first and second entities. The method also includes executing a continuation protocol between the first entity and the second entity while maintaining the physical transmission link. The method further includes transmitting a second user message from one of the first and second entities to the other of the first and second entities, and terminating the physical transmission link between the first entity and the second entity after the transmission of the second user message.

摘要翻译： 一种用于传输继续控制的方法包括建立第一实体和第二实体之间的物理传输链路，以及将第一和第二实体之一的第一用户消息发送到第一和第二实体中的另一个。 该方法还包括在维护物理传输链路的同时在第一实体和第二实体之间执行连续协议。 该方法还包括将第二用户消息从第一和第二实体之一发送到第一和第二实体中的另一个，并且在传送第二用户消息之后终止第一实体和第二实体之间的物理传输链路。

公开(公告)号：US06256492B1

公开(公告)日：2001-07-03

申请号：US09354926

申请日：1999-07-15

申请人： Izzet M. Bilgic

发明人： Izzet M. Bilgic

IPC分类号： H04Q720

CPC分类号： H04W88/02 ,  H04W36/08 ,  H04W36/36 ,  H04W48/16 ,  H04W60/00 ,  H04W72/00 ,  H04W72/02 ,  H04W76/10 ,  H04W80/00 ,  H04W88/08

摘要： A computer program for a user in a wireless communication system to communicate on the system. The communication protocol embodied in the computer program enables the user to acquire a channel on a base station in the system and register with a base station on the system. The communication protocol embodied in the computer program also enables the user to place and receive calls on the communication system. The computer program is comprised of a main controller task and various other tasks, also called subtasks, which are activated by the main controller task. These subtasks are each designed to perform a protocol function for the user on the communication system.

摘要翻译： 一种用于无线通信系统中的用户在系统上通信的计算机程序。 计算机程序中体现的通信协议使得用户能够在系统中的基站上获取信道并向系统上的基站注册。 计算机程序中体现的通信协议还使得用户能够在通信系统上发出和接收呼叫。 计算机程序由主控制器任务和由主控制器任务激活的各种其他任务（也称为子任务）组成。 这些子任务被设计成在通信系统上为用户执行协议功能。