公开(公告)号：DE60127356T2

公开(公告)日：2007-07-12

申请号：DE60127356

申请日：2001-01-05

Applicant: MOTOROLA INC

Inventor： CUDAK MARK C ,  CLASSON BRIAN K ,  JALLOUL LOUAY A ,  GHOSH AMITAVA ,  LOVE ROBERT T

IPC: H04B1/00 ,  H04L1/00 ,  H04W16/14 ,  H04W28/22

Abstract: A mobile station (110) selects an initial data rate for communication between base station (107) and mobile station (110). Mobile station (110) communicates the selected initial data rate to base station (107) through uplink (112). Base station (107) determines a difference level of interference condition experienced by mobile station (107) between a time when the initial data rate was selected by mobile station (110) and a time when base station (107) prepares to communicate to mobile station (110). Base station (107) selects a final data rate for transmission from base station (107) to mobile station (110) based on the determined difference level of interference condition. As such, the initial data rate may be modified to the final data rate while maximizing the down link capacity.

公开(公告)号：DE60127356D1

公开(公告)日：2007-05-03

申请号：DE60127356

申请日：2001-01-05

Applicant: MOTOROLA INC

Inventor： CUDAK MARK C ,  CLASSON BRIAN K ,  JALLOUL LOUAY A ,  GHOSH AMITAVA ,  LOVE ROBERT T

IPC: H04B1/00 ,  H04L1/00 ,  H04W16/14 ,  H04W28/22

Abstract: A mobile station (110) selects an initial data rate for communication between base station (107) and mobile station (110). Mobile station (110) communicates the selected initial data rate to base station (107) through uplink (112). Base station (107) determines a difference level of interference condition experienced by mobile station (107) between a time when the initial data rate was selected by mobile station (110) and a time when base station (107) prepares to communicate to mobile station (110). Base station (107) selects a final data rate for transmission from base station (107) to mobile station (110) based on the determined difference level of interference condition. As such, the initial data rate may be modified to the final data rate while maximizing the down link capacity.

公开(公告)号：BRPI0409966A

公开(公告)日：2006-04-25

申请号：BRPI0409966

申请日：2004-03-24

Applicant: MOTOROLA INC

Inventor： WHINNETT NICHOLAS ,  GHOSH AMITAVA ,  KUCHIBHOTLA RAVI ,  LOVE ROBERT T

IPC: H04W36/18 ,  H04Q7/38

公开(公告)号：BR0307204A

公开(公告)日：2004-11-03

申请号：BR0307204

申请日：2003-01-21

Applicant: MOTOROLA INC

Inventor： BUCKLEY MICHAEL E ,  BACHU RAJA S ,  GHOSH AMITAVA ,  RATASUK RAPEEPAT ,  STEWART KENNETH A ,  VILLION MATHIEU

IPC: H03M13/00 ,  H03M13/09 ,  H03M13/23 ,  H03M13/27 ,  H03M13/29 ,  H04L1/00 ,  H04L1/18

Abstract: An improved turbo code based incremental redundancy includes a first step of puncturing a data stream for a first transmission to provide a set of first unpunctured trellis sections. A next step includes puncturing a data stream for a second transmission to provide a set of second unpunctured trellis sections. A next step includes incremental redundancy combining the first and second transmissions of the trellises to provide non-adjacent first and second unpunctured trellis sections. The above arrangement results in a uniform distribution of punctured and unpunctured bits to provide lower errors.

公开(公告)号：DE69822219T2

公开(公告)日：2004-07-22

申请号：DE69822219

申请日：1998-12-18

Applicant: MOTOROLA INC

Inventor： GHOSH AMITAVA ,  LABEDZ PAUL ,  HAAS A

IPC: H04B7/26 ,  H04J11/00 ,  H04Q7/22 ,  H04Q7/24 ,  H04Q7/26 ,  H04Q7/30 ,  H04Q7/38

Abstract: Base stations (101, 102) utilize a spreading code that is dependent upon whether the particular base station (101) is operating in a synchronized, or an unsynchronized mode. Unsynchronized base stations (102) within the communication system (100) utilize a long code unique to the particular base station (102), and base stations (101) operating in a synchronized mode utilize a time shifted version of the same long code. To reduce the search time for remote units (113) within the communication system (100), a group identification code (GIC) (305) is broadcast during a time period that the long code is masked. The GIC (305) indicates a (spreading code) long code group to which the long code of each base station belongs. Additionally, each base station (101, 102) within the communication system (100) determines its synchronization status and utilizes a particular GIC (305) and long code based on the base station's synchronization status.

公开(公告)号：AU2003287351A1

公开(公告)日：2004-06-07

申请号：AU2003287351

申请日：2003-10-30

Applicant: MOTOROLA INC

Inventor： LOVE ROBERT T ,  STEWART KENNETH A ,  GHOSH AMITAVA

IPC: H04B7/00 ,  H04J11/00 ,  H04W28/04 ,  H04W72/08 ,  H04W72/12 ,  H04J3/24

Abstract: A communication system (300, 1000) supports Hybrid Automatic Repeat Request (H-ARQ), Adaptive Modulation and Coding (AMC), active set handoff, and scheduling functions in a distributed fashion by allowing a mobile station (MS) (1014) to signal control information corresponding to an enhanced reverse link transmission to Active Set base transceiver stations (BTSs) (301, 303, 304) and by allowing the BTSs to perform control functions (314, 316, 318) that were supported by an radio network controller (RNC) in the prior art. The communication system allows time and SIR-based H-ARQ flush functions at the BTSs during soft handoff (SHO), provides a control channel structure to support scheduling, H-ARQ, AMC functions for an enhanced reverse link, or uplink, channel (414) in order to maximize throughput, and enables an MS in a SHO region to choose a scheduling assignment corresponding to a best TFRI out of multiple assignments it receives from multiple active set BTSs.

公开(公告)号：DE69822219D1

公开(公告)日：2004-04-08

申请号：DE69822219

申请日：1998-12-18

Applicant: MOTOROLA INC

Inventor： GHOSH AMITAVA ,  LABEDZ PAUL ,  HAAS A

IPC: H04B7/26 ,  H04J11/00 ,  H04Q7/22 ,  H04Q7/24 ,  H04Q7/26 ,  H04Q7/30 ,  H04Q7/38

Abstract: Base stations (101, 102) utilize a spreading code that is dependent upon whether the particular base station (101) is operating in a synchronized, or an unsynchronized mode. Unsynchronized base stations (102) within the communication system (100) utilize a long code unique to the particular base station (102), and base stations (101) operating in a synchronized mode utilize a time shifted version of the same long code. To reduce the search time for remote units (113) within the communication system (100), a group identification code (GIC) (305) is broadcast during a time period that the long code is masked. The GIC (305) indicates a (spreading code) long code group to which the long code of each base station belongs. Additionally, each base station (101, 102) within the communication system (100) determines its synchronization status and utilizes a particular GIC (305) and long code based on the base station's synchronization status.

公开(公告)号：GB2364206A

公开(公告)日：2002-01-16

申请号：GB0015976

申请日：2000-06-30

Applicant: MOTOROLA INC

Inventor： GHOSH AMITAVA

IPC: H04L1/00 ,  H04W72/12 ,  H04Q7/38

Abstract: In third generation packet data communication systems there are currently three kinds of channel provided for uplink: Random Access Control Channel (RACH), Common or Enhanced Packet Channel (CPCH), and Dedicated Channel (DCH). For downlink there are two kinds: Forward Access Channel (FACH), and Downlink Shared Channel (DSCH). In prior solutions, a network has no knowledge of which procedure should be invoked by a Radio Network Controller (RNC). As such, it is not possible for a network to select a most suitable procedure without being informed. In order for a network to optimise performance the network (RNC) is able to select the most suitable channel type for packet data transfer. The most suitable procedure may differ for bi-directional and uni-directional packet transfer.

公开(公告)号：CA2377227A1

公开(公告)日：2001-10-25

申请号：CA2377227

申请日：2001-03-30

Applicant: MOTOROLA INC

Inventor： JALLOUL LOUAY A ,  CLASSON BRIAN K ,  LOVE ROBERT T ,  GHOSH AMITAVA ,  CUDAK MARK C

IPC: H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04J13/18 ,  H04W48/12 ,  H04W72/14 ,  H04Q7/20

Abstract: Separate forward dedicated and shared control channels (17, 18) are provided in a spread-spectrum communication. The forward dedicated control channel (1 8) is used to communicate persistent control information and point to the share d control channel (17) when further intermittent control information concernin g transmission of data to a mobile station (14) needs to be communicated. The use of a dedicated control channel for only necessary persistent control information, while only pointing to a shared control channel when it is needed, affords more efficient utilization of system resources.

公开(公告)号：BR9912642A

公开(公告)日：2001-05-02

申请号：BR9912642

申请日：1999-06-18

Applicant: MOTOROLA INC

Inventor： GHOSH AMITAVA

IPC: H04B1/707 ,  H04B7/005 ,  H04B7/26 ,  H04B7/216 ,  H04B7/212

Abstract: In a code division multiple access communication system providing a plurality of communication type services between a first unit (100) and a second communicating unit (200) by time-multiplexing a plurality of data channel signals (101, 102, 103) associated with the plurality of communication type services to produce a time-multiplexed data channel signal (106) which are combined to produce a combined signal (136). Combined signal (136) is transmitted from first unit (100) to be received by second unit (200). After producing a code-demultiplexed time-multiplexed data channel signal (218), and a plurality of signal-to-interference ratios estimated based on a plurality of time-multiplexed portions of signal (218), a plurality of power control thresholds corresponding to the plurality of communication type services are compared to the plurality of signal-to-interference ratios. As a result, producing a plurality of power control data bits corresponding to the plurality of communication type services based.