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公开(公告)号：JP2003110496A
公开(公告)日：2003-04-11
申请号：JP7013099
申请日：1999-03-16
Applicant: ERICSSON TELEFON AB L M
Inventor： ESMAILZADEH RIAZ
Abstract: PROBLEM TO BE SOLVED: To propose a radio communication system which can transmit desired information efficiently to a plurality of mobile stations. SOLUTION: This radio communication system establishes a radio circuit between a base station and a mobile station, and communicates a message with such a signal beam as to substantially direct to only the target mobile station by an antenna with the controllable directivity in the above base station when communicating with one mobile station described above. The above base station can transmit information to a plurality of slave stations at the same time by forming a simultaneous report signal beam directed to the plurality of target mobile stations by the above antenna, thereby transmitting the above information when transmitting the same information to the plurality of mobile stations described above. Consequently, it can transmit the information efficiently, and also it can reduce the interference wave given to other mobile stations since it can reduce transmission power.
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公开(公告)号：WO0193436A3
公开(公告)日：2002-03-28
申请号：PCT/SE0101174
申请日：2001-05-23
Applicant: ERICSSON TELEFON AB L M
Inventor： KARLSSON JONAS , ESMAILZADEH RIAZ
IPC: H04B1/7103 , H04B1/7107 , H04B1/16 , H04B1/10 , H04B7/216
CPC classification number: H04B1/7103 , H04B1/7107 , H04B2201/70705 , H04B2201/70707
Abstract: Method and apparatus for minimizing the processing delay incurred by an IC receiver (32) over conventional receivers (20) in a CDMA cellular system are disclosed. The method and apparatus involve operating the conventional receiver (20) and the IC receiver (32) in parallel to each other. Data from the conventional receiver (20) are then used to supplement data from the IC receiver (32) in order to minimize the delays incurred by the IC receiver (32).
Abstract translation: 公开了一种用于最小化CDMA接收机（32）在CDMA蜂窝系统中的常规接收机（20）所引起的处理延迟的方法和装置。 所述方法和装置包括相互并行地操作常规接收器（20）和IC接收器（32）。 然后使用来自常规接收器（20）的数据来补充来自IC接收器（32）的数据，以便最小化由IC接收器（32）引起的延迟。
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公开(公告)号：WO02082681A3
公开(公告)日：2002-12-27
申请号：PCT/SE0200652
申请日：2002-04-02
Applicant: ERICSSON TELEFON AB L M
Inventor： KARLSSON JONAS , ESMAILZADEH RIAZ
IPC: H04B1/7085 , H04B1/7103 , H04B1/7107 , H04B1/707
CPC classification number: H04B1/7085 , H04B1/7103 , H04B1/7107 , H04B1/71072 , H04B2201/70701
Abstract: A single user detection (SUD) unit is used to detect the dedicated physical control channel (DPCCH) of a received signal. This reduces interference from other users, provides higher quality for the control channel detection, and achieves short processing delays. Consequently, the detected control channel being used to enhance the detection of the data channel part of the received signal. The data detection process performed on the data channel being enhanced by using channel estimate information generated by the SUD unit. The data detection process is performed by a Multi-user detector, a single user detector or any conventional detector.
Abstract translation: 单用户检测（SUD）单元用于检测接收信号的专用物理控制信道（DPCCH）。 这减少了来自其他用户的干扰，为控制信道检测提供了更高的质量，并且实现了短暂的处理延迟。 因此，检测到的控制信道被用于增强对接收信号的数据信道部分的检测。 通过使用由SUD单元生成的信道估计信息来增强在数据信道上执行的数据检测过程。 数据检测过程由多用户检测器，单用户检测器或任何常规检测器执行。
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公开(公告)号：WO0201733A3
公开(公告)日：2002-03-28
申请号：PCT/SE0101422
申请日：2001-06-20
Applicant: ERICSSON TELEFON AB L M
Inventor： ESMAILZADEH RIAZ , MASAYUKI ARIYOSHI
CPC classification number: H04W52/08 , H04B1/7107 , H04W52/12 , H04W52/20 , H04W52/24
Abstract: The purpose of the present invention is to offer a structure of a CDMA system having a power control method and interference cancellers which can effectively increase the system capacity and is resistant to sudden changes on the communication path, and to achieve a power control method with a fast response capable of preventing unnecessary increases in the transmission power (and multiple access interference) of the uplink by reflecting the values of the post-interference cancellation signal-to-interference power ratio in the generation of power control command information. The invention is directed to a power control method in a communication system for performing communications by code-division multiple access between a mobile station and base station, wherein a multiple access interference signal contained in a reception signal from the mobile station is cancelled, a post-interference cancellation signal-to-interference power ratio of the reception signal currently received is estimated, a power control command is generated by comparing the estimated post-interference cancellation signal-to-interference power ratio and a target value for power control, and transmitting this power control command to the mobile station to control the transmission power of the mobile station.
Abstract translation: 本发明的目的是提供具有功率控制方法和干扰消除器的CDMA系统的结构，其可以有效地增加系统容量并且抵抗通信路径上的突然变化，并且实现具有 能够通过在生成功率控制命令信息中反映干扰后消除信号与干扰功率比的值来防止上行链路的发送功率（和多址干扰）的不必要的增加的快速响应。 本发明涉及一种通信系统中的功率控制方法，用于通过移动台与基站之间的码分多址进行通信，其中包含在来自移动台的接收信号中的多址干扰信号被取消， 估计当前接收到的接收信号的干扰消除信号与干扰功率比，通过比较估计的干扰后消除信号与干扰功率比和用于功率控制的目标值，生成功率控制命令，并发送 该功率控制命令到移动台来控制移动台的发射功率。
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公开(公告)号：DE69835147D1
公开(公告)日：2006-08-17
申请号：DE69835147
申请日：1998-04-24
Applicant: ERICSSON TELEFON AB L M
Inventor： ESMAILZADEH RIAZ , GUSTAFSSON MARIA
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Patent Agency Ranking
公开(公告)号：MY123462A
公开(公告)日：2006-05-31
申请号：MYPI9903625
申请日：1999-08-24
Applicant: ERICSSON TELEFON AB L M
Inventor： ESMAILZADEH RIAZ , JAMAL KARIM , ROOBOL CHRISTIAAN
Abstract: A METHOD IS DISCLOSED FOR PROCESSING MOBILE-ORIGINATED RANDOM ACCESS REQUESTS ( RA₁ - RA₄) IN A MOBILE TELECOMMUNICATIONS SYSTEM THAT RANDOMLY SELECTS NEW SIGNATURES (102) FOR RE-TRANSMISSIONS IN THE EVENT THAT COLLISIONS HAVE OCCURED.AS SUCH, THE RANDOM ACCESS RE-TRANSMISSIONS ARE RANDOMIZED OVER THE SIGNATURE DOMAIN INSTEAD OF JUST OVER THE TIME DOMAIN. CONSEQUENTLY, THE DISCLOSED INVENTION SIGNIFICANTLY SHORTENS RANDOM ACCESS DELAYS CAUSED BY COLLISIONS OR ERRONEOUS ARRIVALS AT BASE STATION RECEIVERS, AND ALSO SIGNIFICANTLY REDUCES THE INTERVAL (TD) BETWEEN RANDOM ACCESS RE-TRANSMISSIONS.(FIGURE 8)
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公开(公告)号：MY123293A
公开(公告)日：2006-05-31
申请号：MYPI9904388
申请日：1999-10-12
Applicant: ERICSSON TELEFON AB L M
Inventor： JAMAL KARIM , BUTOVITSCH PAUL , DAHLMAN ERIK BL , ESMAILZADEH RIAZ , WILLARS PER
IPC: H04B1/38 , H04B7/26 , H04L12/56 , H04W8/26 , H04W12/10 , H04W28/04 , H04W56/00 , H04W72/04 , H04W74/00 , H04W74/04
Abstract: IN A COMMUNICATIONS SYSTEM, COMMUNICATIONS RESOURCES ARE ALLOCATED IN A DYNAMIC, ''AS NEEDED" FASHION. NO EXPLICIT SIGNALING IS NEEDED TO EXCHANGE INFORMATION PERTAINING SPECIFICALLY TO AN ALLOCATED COMMUNICATIONS RESOURCE. INSTEAD, RESOURCES ARE IMPLICITLY ALLOCATED BY USING ONE OR MORE PARAMETERS KNOWN TO BOTH THE RADIO ACCESS NETWORK (24) AND MOBILE STATION (30) THAT ARE MORE OR LESS UNIQUE TO THE MOBILE STATION (30). SUCH PARAMETERS ARE USED TO GENERATE OR ADDRESS A COMMUNICATIONS RESOURCE FOR USE BY THE MOBILE STATION (30). THE PARAMETERS MIGHT, FOR EXAMPLE, BE INFORMATION READILY ACQUIRED OR COMMUNICATED AS A RESULT. OF A SYNCHRONIZATION PROCEDURE, A MOBILE STATION REGISTRATION PROCEDURE, A MOBILE STATION ACCESS PROCEDURE, A PAGING PROCEDURE, ETC. EXAMPLE PARAMETERS MAY INCLUDE A SYSTEM FRAME NUMBER, A SYSTEM IDENTIFICATION, A RADIO ACCESS NETWORK IDENTIFICATION, A BASE STATION IDENTIFICATION, A CELL IDENTIFICATION, A MOBILE STATION-ASSOCIATED SIGNATURE, AN ACCESS REFERENCE NUMBER CORRESPONDING TO THE MOBILE STATION (30), A TIME INSTANT WHEN AN ACKNOWLEDGMENT MESSAGE IS RECEIVED, ETC.(FIGURE 1)
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公开(公告)号：CA2268668C
公开(公告)日：2006-05-09
申请号：CA2268668
申请日：1997-10-14
Applicant: ERICSSON TELEFON AB L M
Inventor： ESMAILZADEH RIAZ
Abstract: A mobile communications system (10) is provided for significantly reducing the time required to process a random access mobile-originated call. During call setup, a mobile station (16, 18) transmits a random access packet that includes a preamble and a plurality of fields. The information provided in these fields is used by the base station (12) to facilitate a more efficient call setup and more quickly allocate channel resources. A system is also provided for detecting, identifying and receiving multiple random access requests. Each mobile station (16, 18) transmits one of a plurality of different preamble symbol patterns in a random access request packet. The base station receiver (14) includes a plurality of accumulators (126), each of which is tuned to a different preamble symbol pattern. Consequently, the base station receiver (14) can distinguish between simultaneous random acces s requests. This preamble symbol arrangement can also be used in conjunction with power-ramping processes, such as those used in IS-9 5 and CODIT systems, to provide individual power control for mobile stations making multiple random access attempts.
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公开(公告)号：MY121415A
公开(公告)日：2006-01-28
申请号：MYPI9902225
申请日：1999-06-03
Applicant: ERICSSON TELEFON AB L M
Inventor： ESMAILZADEH RIAZ
Abstract: IN TRANSMITTING COMMUNICATION SIGNALS TO A RECEIVER VIA A TRANSMISSION CHANNEL (15), THE TRANSMITTER GENERATES A COMPOSITE SIGNAL INCLUDING INFORMATION FROM WHICH THE RECEIVER CAN DETERMINE A CHANNEL EVALUATION SIGNAL AND OTHER CONTROL INFORMATION. THE COMPOSITE SIGNAL IS TRANSMITTED OVER THE TRANSMISSION CHANNEL (15). THIS RESULTS IN IMPORVED CHANNEL CAPACITY, REDUCED POWER TRANSMISSION REQUIREMENTS, AND REDUCED INTERFERENCE IN THE TRANSMISSION CHANNEL (15).
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公开(公告)号：MY117414A
公开(公告)日：2004-06-30
申请号：MYPI9802760
申请日：1998-06-19
Applicant: ERICSSON TELEFON AB L M
Inventor： GUSTAFSSON MARIA , ESMAILZADEH RIAZ , DAHLMAN ERIK
IPC: H04B1/7073 , H04B1/7075 , H04L7/00 , H04Q7/38
Abstract: EACH FRAME OF A PILOT CHANNEL TRANSMISSION IN A SPREAD SPECTRUM COMMUNICATIONS SYSTEM IS DIVIDED INTO A PLURALITY OF SYNCHRONIZATION SLOTS. EACH OF THE SYNCHRONIZATION SLOTS INCLUDES A PILOT CODE, AND AT LEAST ONE OF THE SYNCHRONIZATION SLOTS FURTHER INCLUDES A FRAMING S.YNCHRONIZATION CODE. TO EXTRACT FRAME AND SLOT SYNCHRONIZATION INFORMATION FROM THE PILOT CHANNEL TRANSMISSION, PILOT CODE TIMING IS FIRST IDENTIFIED BY APPLYING A MATCHED FILTER OR CORRELATION TO A RECEIVED PILOT SIGNAL, IDENTIFYING PEAKS, AND USING THE PEAKS TO FIND A TIMING REFERENCE INDICATIVE OF SYNCHRONIZATION SLOT BOUNDARIES. NEXT, THE SET OF KNOWN FRAMING SYNCHRONIZATION CODES ARE CORRELATED WITH THE RECEIVED SIGNAL OVER THE INCLUDED FOUND SYNCHRONIZATION SLOTS. GIVEN THAT THE LOCATION WITHIN THE FRAME OF THE KNOWN FRAMING SYNCHRONIZATION CODE(S) IS KNOWN, ONCE A CORRELATION MATCH IS FOUND AT A CERTAIN SLOT LOCATION, THE BOUNDARY OF THE FRAME (30) (I.E., THE FRAME SYNCHRONIZATION) RELATIVE THERETO IS THEN ALSO KNOWN.
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