公开(公告)号：US5022024B1

公开(公告)日：1999-06-22

申请号：US34930189

申请日：1989-05-08

Applicant: INTERDIGITAL TECH CORP

Inventor： PANETH ERIC ,  HANDZEL MARK J ,  MORLEY STEVEN A ,  AVIS GRAHAM M

IPC: H04L29/02 ,  H04B7/005 ,  H04B7/04 ,  H04B7/08 ,  H04B7/26 ,  H04J3/00 ,  H04J3/06 ,  H04J3/16 ,  H04J4/00 ,  H04L1/00 ,  H04L1/06 ,  H04L1/16 ,  H04L1/18 ,  H04L5/14 ,  H04L5/22 ,  H04L12/56 ,  H04L27/18 ,  H04M20060101 ,  H04M1/00 ,  H04M3/00 ,  H04M11/00 ,  H04M11/06 ,  H04Q3/42 ,  H04Q3/58 ,  H04Q3/62 ,  H04Q11/04 ,  H04W4/18 ,  H04W12/02 ,  H04W12/10 ,  H04W28/04 ,  H04W28/06 ,  H04W28/14 ,  H04W28/24 ,  H04W28/26 ,  H04W36/06 ,  H04W36/12 ,  H04W40/02 ,  H04W52/00 ,  H04W56/00 ,  H04W72/04 ,  H04W72/12 ,  H04W74/00 ,  H04W74/04 ,  H04W76/02 ,  H04W84/00 ,  H04W84/08 ,  H04W84/14 ,  H04W88/02 ,  H04W88/08

CPC classification number: H04W84/14 ,  H04B7/04 ,  H04B7/0865 ,  H04J3/0647 ,  H04J3/0682 ,  H04L1/0001 ,  H04L1/0003 ,  H04L1/0007 ,  H04L1/0026 ,  H04L1/0057 ,  H04L1/0061 ,  H04L1/0084 ,  H04L1/06 ,  H04L1/08 ,  H04L1/1642 ,  H04L1/18 ,  H04L1/188 ,  H04L1/1887 ,  H04L5/143 ,  H04W4/18 ,  H04W24/00 ,  H04W28/06 ,  H04W28/14 ,  H04W28/24 ,  H04W28/26 ,  H04W36/12 ,  H04W40/02 ,  H04W52/0216 ,  H04W52/20 ,  H04W56/00 ,  H04W72/02 ,  H04W72/04 ,  H04W72/042 ,  H04W72/044 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/12 ,  H04W74/04 ,  H04W76/02 ,  H04W84/00 ,  H04W88/08 ,  Y02D70/00 ,  Y02D70/30 ,  Y02D70/444

Abstract: A master station communicates with the main network, whilst a set of mobile or fixed sub stations of voice or data users share the channel using time division multiplexing. The number of time division channels available depends on the quality of the transmission links, power and modulation index. The rate of errors is detected to maintain a specified condition of operation. When all available channels are occupied a busy signal is transmitted by the master station. The effect of multiplexing on the sub-links gives apparent simultaneous bidirectional transmission.

Abstract translation: 主站与主网络通信，而一组语音或数据用户的移动或固定子站利用时分复用共享信道。 可用的时分信道数量取决于传输链路的质量，功率和调制指数。 检测到错误率以维持指定的操作条件。 当所有可用信道占用时，主站发送忙信号。 多路复用对子链路的影响提供了明显的同时双向传输。

公开(公告)号：JP2003244756A

公开(公告)日：2003-08-29

申请号：JP2003007452

申请日：2003-01-15

Applicant: INTERDIGITAL TECH CORP

Inventor： PANETH ERIC ,  HANDZEL MARK J

IPC: H04L29/02 ,  H04B7/005 ,  H04B7/04 ,  H04B7/08 ,  H04B7/26 ,  H04J3/00 ,  H04J3/06 ,  H04J3/16 ,  H04J4/00 ,  H04L1/00 ,  H04L1/06 ,  H04L1/16 ,  H04L1/18 ,  H04L5/14 ,  H04L5/22 ,  H04L12/56 ,  H04L27/18 ,  H04M20060101 ,  H04M1/00 ,  H04M3/00 ,  H04M11/00 ,  H04M11/06 ,  H04Q3/42 ,  H04Q3/58 ,  H04Q3/62 ,  H04Q11/04 ,  H04W4/18 ,  H04W12/02 ,  H04W12/10 ,  H04W28/04 ,  H04W28/06 ,  H04W28/14 ,  H04W28/24 ,  H04W28/26 ,  H04W36/06 ,  H04W36/12 ,  H04W40/02 ,  H04W52/00 ,  H04W56/00 ,  H04W72/04 ,  H04W72/12 ,  H04W74/00 ,  H04W74/04 ,  H04W76/02 ,  H04W84/00 ,  H04W84/08 ,  H04W84/14 ,  H04W88/02 ,  H04W88/08 ,  H04Q7/36

Abstract: PROBLEM TO BE SOLVED: To provide a wireless communication system capable of enhancing the frequency utilizing efficiency through the utilization of the FDMA/TDMA and assigning a time slot with a different length depending on an information signal to a destination. SOLUTION: The wireless communication system is configured to include: a remote connection central processing apparatus capable of assigning a time length equal to the length of one or more time slots in the same frame as to each of information signals sent through a forward channel with one assigned frequency among a plurality of forward frequencies and a backward channel with one assigned frequency among a plurality of backward frequencies; and a plurality of subscriber station units each provided with a setup means for allocating the information signal to the time slot in the frame corresponding to the assigned time length through the backward channel and receiving the information signal from the time slot in the frame corresponding to the assigned time length through the forward channel in response to the assignment, wherein the time slot with a different length can be assigned to other information signal from other sender in the same frame. COPYRIGHT: (C)2003,JPO

公开(公告)号：JPH10174173A

公开(公告)日：1998-06-26

申请号：JP23659297

申请日：1997-07-11

Applicant: INTERDIGITAL TECH CORP

Inventor： PANETH ERIC ,  HANDZEL MARK J

IPC: H04L29/02 ,  H04B7/005 ,  H04B7/04 ,  H04B7/08 ,  H04B7/26 ,  H04J3/00 ,  H04J3/06 ,  H04J3/16 ,  H04J4/00 ,  H04L1/00 ,  H04L1/06 ,  H04L1/16 ,  H04L1/18 ,  H04L5/14 ,  H04L5/22 ,  H04L12/56 ,  H04L27/18 ,  H04M20060101 ,  H04M1/00 ,  H04M3/00 ,  H04M11/00 ,  H04M11/06 ,  H04Q3/42 ,  H04Q3/58 ,  H04Q3/62 ,  H04Q11/04 ,  H04W4/18 ,  H04W12/02 ,  H04W12/10 ,  H04W28/04 ,  H04W28/06 ,  H04W28/14 ,  H04W28/24 ,  H04W28/26 ,  H04W36/06 ,  H04W36/12 ,  H04W40/02 ,  H04W52/00 ,  H04W56/00 ,  H04W72/04 ,  H04W72/12 ,  H04W74/00 ,  H04W74/04 ,  H04W76/02 ,  H04W84/00 ,  H04W84/08 ,  H04W84/14 ,  H04W88/02 ,  H04W88/08 ,  H04Q7/38 ,  H04Q7/00

Abstract: PROBLEM TO BE SOLVED: To enable two kinds of bidirectional simultaneous call transmission at least with prescribed band width by enabling the simultaneous multiplex use of frequency inside an applied network and using low-speed digital voice coding. SOLUTION: The receiving function of base station is essentially inverse to a transmitting function. Digital voice information from a PBX 15 is inputted to a CODEC 16. Then, four pieces of CODEC 16 belong to a VCU 17 and perform voice compression to the time slots of respective frequency channels. Then, a CCU 18 controls a TDMA function, extracts the transmission channel output of CODEC 16 of correspondent VCU 17 and transmits data to a modem 19 in proper format at the rate of 16k symbols/sec. An IF signal modulated by the modem 19 is converted to an RFUHF signal by an RFU 21 and sent through an antenna interface 22 to a transmission antenna. An RPU 20 is a central processing unit for transmitting connection data and control messages to the CCU.

公开(公告)号：JP2001025052A

公开(公告)日：2001-01-26

申请号：JP2000142479

申请日：2000-05-15

Applicant: INTERDIGITAL TECH CORP

Inventor： PANETH ERIC ,  HANDZEL MARK J

IPC: H04L29/02 ,  H04B7/005 ,  H04B7/04 ,  H04B7/08 ,  H04B7/26 ,  H04J3/00 ,  H04J3/06 ,  H04J3/16 ,  H04J4/00 ,  H04L1/00 ,  H04L1/06 ,  H04L1/16 ,  H04L1/18 ,  H04L5/14 ,  H04L5/22 ,  H04L12/56 ,  H04L27/18 ,  H04M20060101 ,  H04M1/00 ,  H04M3/00 ,  H04M11/00 ,  H04M11/06 ,  H04Q3/42 ,  H04Q3/58 ,  H04Q3/62 ,  H04Q11/04 ,  H04W4/18 ,  H04W12/02 ,  H04W12/10 ,  H04W28/04 ,  H04W28/06 ,  H04W28/14 ,  H04W28/24 ,  H04W28/26 ,  H04W36/06 ,  H04W36/12 ,  H04W40/02 ,  H04W52/00 ,  H04W56/00 ,  H04W72/04 ,  H04W72/12 ,  H04W74/00 ,  H04W74/04 ,  H04W76/02 ,  H04W84/00 ,  H04W84/08 ,  H04W84/14 ,  H04W88/02 ,  H04W88/08 ,  H04Q7/22 ,  H04Q7/24 ,  H04Q7/26 ,  H04Q7/30

Abstract: PROBLEM TO BE SOLVED: To provide a high quality radio digital subscriber telephone system for improving frequency utilization efficiency by FDMA/TDMA. SOLUTION: By using radio digital time division multiplex transmission channels between a base station mutually connected with an analog or digital public communication network and plural fixed or mobile subscriber stations, voice signals, data signals, facsimile signals and video, etc., are radio- transmitted. Signals entering from a telegraph bus 14 are passed through a switchboard 25, connected through a coder 16 inside a single voice coder 17, a channel controller 18 and an RFU 21 to an RF channel and made to reach a radio subscriber. It is similar in a reverse course as well. The base station is provided with the channels for plural units, the channels are appropriately connected and switched by a PBX call processor 24, an RPU 20 and a system timing device 35, etc., and utilization efficiency is improved.

公开(公告)号：JP2000004483A

公开(公告)日：2000-01-07

申请号：JP6535599

申请日：1999-02-05

Applicant: INTERDIGITAL TECH CORP

Inventor： PANETH ERIC ,  HANDZEL MARK J

IPC: H04L29/02 ,  H04B7/005 ,  H04B7/04 ,  H04B7/08 ,  H04B7/26 ,  H04J3/00 ,  H04J3/06 ,  H04J3/16 ,  H04J4/00 ,  H04L1/00 ,  H04L1/06 ,  H04L1/16 ,  H04L1/18 ,  H04L5/14 ,  H04L5/22 ,  H04L12/56 ,  H04L27/18 ,  H04M20060101 ,  H04M1/00 ,  H04M3/00 ,  H04M11/00 ,  H04M11/06 ,  H04Q3/42 ,  H04Q3/58 ,  H04Q3/62 ,  H04Q11/04 ,  H04W4/18 ,  H04W12/02 ,  H04W12/10 ,  H04W28/04 ,  H04W28/06 ,  H04W28/14 ,  H04W28/24 ,  H04W28/26 ,  H04W36/06 ,  H04W36/12 ,  H04W40/02 ,  H04W52/00 ,  H04W56/00 ,  H04W72/04 ,  H04W72/12 ,  H04W74/00 ,  H04W74/04 ,  H04W76/02 ,  H04W84/00 ,  H04W84/08 ,  H04W84/14 ,  H04W88/02 ,  H04W88/08 ,  H04Q7/38 ,  H04Q7/00

Abstract: PROBLEM TO BE SOLVED: To attain the effective utilization of a frequency, improvement in the stability of operation, cost-down and improvement in performance by enabling the transmission of at least two-way simultaneous calls with prescribed band width. SOLUTION: A private branch exchange(PBX) 15 converts audio information to the digital sample of 64 kbps μ-law compression pulse code modulation(PCM). That digital audio information is processed by an audio compression system. Each channel control unit(CCU) 18 extracts transmission channel output from an encoder/decoder 16 of a correspondent single voice encoder/decoder (VCU) 17 and transmits data to a modem device 19 in the proper time slot and proper format. The properly formatted transmission data from each CCU 18 are transmitted to the modem 19 at the rate of 16K symbols/sec. Respective RF/IF processor (RFU) 21, modem 19, CCU 18, VCU 17 and PBX 15 are originally fully duplexed. Thus, at least two-way simultaneous calls can be transmitted with the prescribed band width.

公开(公告)号：JP2002204483A

公开(公告)日：2002-07-19

申请号：JP2001246767

申请日：2001-08-15

Applicant: INTERDIGITAL TECH CORP

Inventor： PANETH ERIC ,  HANDZEL MARK J

IPC: H04L29/02 ,  H04B7/005 ,  H04B7/04 ,  H04B7/08 ,  H04B7/26 ,  H04J3/00 ,  H04J3/06 ,  H04J3/16 ,  H04J4/00 ,  H04L1/00 ,  H04L1/06 ,  H04L1/16 ,  H04L1/18 ,  H04L5/14 ,  H04L5/22 ,  H04L12/56 ,  H04L27/18 ,  H04M20060101 ,  H04M1/00 ,  H04M3/00 ,  H04M11/00 ,  H04M11/06 ,  H04Q3/42 ,  H04Q3/58 ,  H04Q3/62 ,  H04Q11/04 ,  H04W4/18 ,  H04W12/02 ,  H04W12/10 ,  H04W28/04 ,  H04W28/06 ,  H04W28/14 ,  H04W28/24 ,  H04W28/26 ,  H04W36/06 ,  H04W36/12 ,  H04W40/02 ,  H04W52/00 ,  H04W56/00 ,  H04W72/04 ,  H04W72/12 ,  H04W74/00 ,  H04W74/04 ,  H04W76/02 ,  H04W84/00 ,  H04W84/08 ,  H04W84/14 ,  H04W88/02 ,  H04W88/08 ,  H04Q7/38

Abstract: PROBLEM TO BE SOLVED: To provide a subscriber RF telephone system that uses FDMA/TDMA to enhance the frequency utilizing efficiency. SOLUTION: Using wireless digital time division multiplex transmission circuits between a base station and a plurality of fixed or mobile subscriber stations, many information signals are wirelessly transmitted. The number of time division multiple circuits by each RF channel is determined by the transmission quality of the signals. The information signals are voice signal, data signal and video or the like. The modulation level of the signals and the transmission power of the base stations are adjusted in accordance with signal error detection in the system. Space diversity by a plurality of antennas is used to avoid adverse effect of fading. A combination of a transmission channel circuit that processes a plurality of received information signals to be simultaneously sent to different subscriber stations via prescribed RF channels and a reception channel circuit that processes signals simultaneously received via prescribed RF channels from different subscriber stations can activate the operation of each of RF channel pairs.

公开(公告)号：SE521707C2

公开(公告)日：2003-11-25

申请号：SE9704730

申请日：1997-12-18

Applicant: INTERDIGITAL TECH CORP

Inventor： PANETH ERIC ,  HANDZEL MARK J

IPC: H04B7/005 ,  H04B7/04 ,  H04L29/02 ,  H04B7/08 ,  H04B7/26 ,  H04J3/00 ,  H04J3/06 ,  H04J3/16 ,  H04J4/00 ,  H04L1/00 ,  H04L1/06 ,  H04L1/16 ,  H04L1/18 ,  H04L5/14 ,  H04L5/22 ,  H04L12/56 ,  H04L27/18 ,  H04M20060101 ,  H04M1/00 ,  H04M3/00 ,  H04M11/00 ,  H04M11/06 ,  H04Q3/42 ,  H04Q3/58 ,  H04Q3/62 ,  H04Q11/04 ,  H04W4/18 ,  H04W12/02 ,  H04W12/10 ,  H04W28/04 ,  H04W28/06 ,  H04W28/14 ,  H04W28/24 ,  H04W28/26 ,  H04W36/06 ,  H04W36/12 ,  H04W40/02 ,  H04W52/00 ,  H04W56/00 ,  H04W72/04 ,  H04W72/12 ,  H04W74/00 ,  H04W74/04 ,  H04W76/02 ,  H04W84/00 ,  H04W84/08 ,  H04W84/14 ,  H04W88/02 ,  H04W88/08 ,  H04Q7/00 ,  H04B1/64

Abstract: A master station communicates with the main network, whilst a set of mobile or fixed sub stations of voice or data users share the channel using time division multiplexing. The number of time division channels available depends on the quality of the transmission links, power and modulation index. The rate of errors is detected to maintain a specified condition of operation. When all available channels are occupied a busy signal is transmitted by the master station. The effect of multiplexing on the sub-links gives apparent simultaneous bidirectional transmission.

公开(公告)号：FI104676B

公开(公告)日：2000-04-14

申请号：FI963647

申请日：1996-09-16

Applicant: INTERDIGITAL TECH CORP

Inventor： PANETH ERIC ,  HANDZEL MARK J

IPC: H04B7/005 ,  H04B7/04 ,  H04L29/02 ,  H04B7/08 ,  H04B7/26 ,  H04J3/00 ,  H04J3/06 ,  H04J3/16 ,  H04J4/00 ,  H04L1/00 ,  H04L1/06 ,  H04L1/16 ,  H04L1/18 ,  H04L5/14 ,  H04L5/22 ,  H04L12/56 ,  H04L27/18 ,  H04M20060101 ,  H04M1/00 ,  H04M3/00 ,  H04M11/00 ,  H04M11/06 ,  H04Q3/42 ,  H04Q3/58 ,  H04Q3/62 ,  H04Q11/04 ,  H04W4/18 ,  H04W12/02 ,  H04W12/10 ,  H04W28/04 ,  H04W28/06 ,  H04W28/14 ,  H04W28/24 ,  H04W28/26 ,  H04W36/06 ,  H04W36/12 ,  H04W40/02 ,  H04W52/00 ,  H04W56/00 ,  H04W72/04 ,  H04W72/12 ,  H04W74/00 ,  H04W74/04 ,  H04W76/02 ,  H04W84/00 ,  H04W84/08 ,  H04W84/14 ,  H04W88/02 ,  H04W88/08 ,  H04Q7/20

Abstract: A master station communicates with the main network, whilst a set of mobile or fixed sub stations of voice or data users share the channel using time division multiplexing. The number of time division channels available depends on the quality of the transmission links, power and modulation index. The rate of errors is detected to maintain a specified condition of operation. When all available channels are occupied a busy signal is transmitted by the master station. The effect of multiplexing on the sub-links gives apparent simultaneous bidirectional transmission.

公开(公告)号：DE3609394C2

公开(公告)日：1998-11-05

申请号：DE3609394

申请日：1986-03-20

Applicant: INTERDIGITAL TECH CORP

Inventor： PANETH ERIC ,  CRITCHLOW DAVID N ,  YEHUSHUA MOSHE

IPC: H03D7/00 ,  A63B31/00 ,  H04L27/18 ,  H04L27/20 ,  H04L27/22 ,  H04L27/227 ,  H03H15/00 ,  H03H17/00

Abstract: A modulator for a modem, said modulator being adapted to convert a bit stream, wherein each given number of successive bits defines a symbol, into a phase modulated intermediate frequency (IF) signal, the symbols in the modulator section being phase modulated DPSK conversion. The phase modulated symbols are then digitally filtered to provide a filtered signal comprising time shared, digital in-phase and quadrature phase components that, when converted into an analog signal, provides a modulation signal of a frequency that is centered about a predetermined frequency and deviates therefrom in accordance with the value of the phase modulated symbol. The filtered signal, after being converted to an analog signal is then filtered and passed to a mixer for up conversion to an IF signal.

公开(公告)号：FI963647A0

公开(公告)日：1996-09-16

申请号：FI963647

申请日：1996-09-16

Applicant: INTERDIGITAL TECH CORP

Inventor： PANETH ERIC ,  HANDZEL MARK J

IPC: H04B7/005 ,  H04L29/02 ,  H04B7/04 ,  H04B7/08 ,  H04B7/26 ,  H04J3/00 ,  H04J3/06 ,  H04J3/16 ,  H04J4/00 ,  H04L1/00 ,  H04L1/06 ,  H04L1/16 ,  H04L1/18 ,  H04L5/14 ,  H04L5/22 ,  H04L12/56 ,  H04L27/18 ,  H04M20060101 ,  H04M1/00 ,  H04M3/00 ,  H04M11/00 ,  H04M11/06 ,  H04Q3/42 ,  H04Q3/58 ,  H04Q3/62 ,  H04Q11/04 ,  H04W4/18 ,  H04W12/02 ,  H04W12/10 ,  H04W28/04 ,  H04W28/06 ,  H04W28/14 ,  H04W28/24 ,  H04W28/26 ,  H04W36/06 ,  H04W36/12 ,  H04W40/02 ,  H04W52/00 ,  H04W56/00 ,  H04W72/04 ,  H04W72/12 ,  H04W74/00 ,  H04W74/04 ,  H04W76/02 ,  H04W84/00 ,  H04W84/08 ,  H04W84/14 ,  H04W88/02 ,  H04W88/08 ,  H04M

Abstract: A master station communicates with the main network, whilst a set of mobile or fixed sub stations of voice or data users share the channel using time division multiplexing. The number of time division channels available depends on the quality of the transmission links, power and modulation index. The rate of errors is detected to maintain a specified condition of operation. When all available channels are occupied a busy signal is transmitted by the master station. The effect of multiplexing on the sub-links gives apparent simultaneous bidirectional transmission.