Ipr Licensing, Inc.

Intel Corporation

Siemens Communications, Inc.

Tantivy Communications, Inc.

Siemens Aktiengesellschaft

Raytheon Company

Philips Electronics North America Corporation

Qualcomm Incorporated

Koninklijke Philips Corporation N.v.

Northrop Grumman Systems Corporation

Nokia Siemens Networks Gmbh & Co Kg

Siemens Information & Communication Mobile, LLC

Philips Electronics North America Corporatin

Interdigital Patent Corporation

John E. Hoffmann

Antoine Jean Rouphael

John Erich Hoffmann

James Arthur Proctor, Jr

George Rodney Nelson, Jr

Daniel Innis Riley

James A Proctor, Jr

Thomas Klingenbrunn

Lichung Chu

Benny Vejlgaard

John E Hoffman

G Rodney Nelson, Jr

George R Nelson

Farbod Kamgar

Samir K Patel

Bing Chiang

Kenneth Marvin Gainey

Griffin Keith Gothard

Michael James Lynch

Kevin Peter Johnson

Phillip M Izdebski

Mariam Motamed

Allison Y Pern

William David Southcombe

Abu Amanullah

Lawrence W LaMont, Jr

James A Proctor, Iii

Gennady Y Poberezhskiy

Joon S Choi

Benny Veilgaard

Jr Proctor James A

Jr Nelson George Rodney

James A Proctor

Systems, devices, methods, and computer-readable media for spread spectrum (SS) receiver interference mitigation are presented. An interference mitigation unit can include an interference analyzer that receives a complex-valued signal and estimates statistical characteristics of at least a portion of the complex-valued signal, a unit controller that receives the estimated statistical characteristics from the interference analyzer, classifies the interference distribution based on statistical characteristics as a Gaussian, long-tail, or short-tail, selects a non-linearity for that distribution, and a programmable non-linear module that performs a non-linear functional conversion of an envelope of the received complex-valued signal using a non-linear input-output characteristic based on the classification by the unit controller.

Mitigating strong non-Gaussian interference in SS receivers

A finite impulse response (FIR) filter including a delay line and a plurality of arithmetic units. Each arithmetic unit is coupled to a different one of a plurality of tap points of the delay line, is configured to receive a respective signal value over the delay line, and is associated with a respective coefficient. Any given one of the arithmetic units is configured to receive a respective control word. The respective control word specifying: (i) a plurality of trivial multiplication operations, and (ii) a plurality of bit shift operations. Any given one of the arithmetic units is further configured to estimate or calculate a product of the respective signal of the arithmetic unit respective signal value and the respective coefficient of the arithmetic unit by performing the trivial multiplication operations and bit shift operations that are specified by the respective control word that is received at the given arithmetic unit.

Configurable multiplier-free multirate filter

Methods and apparatuses are disclosed regarding a wireless field unit, which may receive a plurality of forward link assignment messages for a plurality of time slots for a plurality of forward link transmissions, each message including an indication of a modulation and a code rate associated with a respective forward link transmission. The field unit may receive at least one of the forward link transmissions in at least one time slot at the respective indicated modulation and code rate. The field unit may receive a plurality of reverse link assignment messages for a plurality of time slots for a plurality of reverse link transmissions, each message including an indication of a modulation and a code rate associated with a respective reverse link transmission. The field unit may transmit at least one of the reverse link transmissions in at least one time slot at the respective indicated modulation and code rate.

Qualifying available reverse link coding rates from access channel power setting

Disclosed is a method and apparatus for utilizing an array of one or more mobile devices to perform a task. The method may include accessing a task to be performed using the array of one or more mobile devices. The task may include user equipment positioning, imaging a real world area, or a combination thereof. The method may also include receiving signals collected by the array of one or more mobile devices while the task is being performed, and determining an uncertainty of a result of the task being performed based, at least in part, on one or more characteristics associated with the array of mobile devices and the task being performed. Furthermore, the method may include adjusting the array of mobile devices to reduce the uncertainty of the result of the task being performed.

System and method for utilizing an array of mobile devices for imaging and user equipment positioning

Methods and apparatuses are disclosed regarding a wireless field unit, which may receive a plurality of forward link assignment messages for the wireless field unit over at least one first code channel. Each of the forward link assignment messages may indicate a modulation type, a data rate and assigned channel codes for a respective assigned forward link transmission. Also, forward link transmissions may be time multiplexed between wireless field units. The wireless field unit may receive a plurality of assigned forward link transmissions. In addition, the wireless field unit my process each of the received assigned forward link transmissions in response to the respective received forward link assignment messages. Further, the wireless field unit may receive power control information in assigned time intervals on a time division multiplexed second code channel, wherein the time division multiplexed second code channel is time multiplexed between a plurality of wireless field units.

Multiple field units in a CDMA system are synchronized for communication with a base station using a shared forward and reverse link channel. Each field unit is assigned a time slot in a forward link channel to receive messages from the base station. Likewise, each field unit is assigned a time slot on a common reverse link channel for transmitting messages to the base station. Timing alignment among each of many field units and the base station is achieved by analyzing messages received at the base station in a corresponding time slot from each field unit. Thereafter, a message is transmitted in a corresponding time slot to a particular field unit from the base station for adjusting its timing so that future messages transmitted from the field unit are received in the appropriate time slot at the base station. In this way, minimal resources are deployed to maintain communication and precise synchronization between a base station and each of multiple users, minimizing collisions between field units transmitting in adjacent time slots on the reverse link.

Minimal maintenance link to support synchronization

A mobile device may generate reference bits. The mobile device may also produce a frame to send in an uplink transmission having two portions selectively with the reference bits or data bits.

Communicating reference and data information in a wireless network

In an illustrative embodiment of the present invention, a reference signal including pilot information is transmitted from a base station to one or multiple field units over a pilot channel. A message is also sent to the field units over a paging channel to indicate an effective radiated power level at which the reference signal is transmitted on the pilot channel. Based on a received power level of the reference signal at a field unit and the effective radiated power level of the reference signal, a forward path loss is estimated at the field unit for the forward link between the base station and field unit. Assuming the path loss in the reverse link is approximately the same as the estimated forward link path loss, the field unit can transmit, a reply message in the reverse link so that the base station generally receives a message at-a desired power level.

Reverse link initial power setting using effective radiated power message to compute path loss

Methods and apparatuses are disclosed regarding a field unit, which may receive a plurality of forward link assignment messages for a plurality of time slots for a plurality of forward link transmissions, each message including an indication of a modulation and a code rate associated with a respective forward link transmission. The unit may receive at least one of the forward link transmissions in at least two of the time slots at the respective indicated modulation and code rate. The unit may receive a plurality of reverse link assignment messages for a plurality of time slots for a plurality of reverse link transmissions, each message including an indication of a modulation and a code rate associated with a respective reverse link transmission. The unit may transmit at least one of the reverse link transmissions in at least two of the time slots at the respective indicated modulation and code rate.

The present invention provides for making code rate adjustments and modulation type adjustments in a pseudonoise (PN) encoded CDMA system. Coding rate adjustments may be made by changing the number of information bits per symbol, or Forward Error Code (FEC) coding rate. A forward error correction (FEC) block size is maintained at a constant amount. Therefore, as the number of information bits per symbol are increased, an integer multiple of bits per epoch is always maintained. The scheme permits for a greater flexibility and selection of effective data rates providing information bit rates ranging from, for example, approximately 50 kilobits per second to over 5 mega bits per second (Mbps) in one preferred embodiment.

Maximizing data rate by adjusting codes and code rates

Methods and apparatuses are disclosed regarding data rate and resource allocation decisions which are made for a communications channel, such as a wireless reverse connection. The wireless reverse connection may be between stations. One of the stations may be a base station and another station may be a field unit. The field unit may transmit data to a base station at a first data rate, based on a first resource allocation. Also, the field unit may transmit, to the base station, an indication, such as a digital data word, that the field unit has the capability to support the transmission of uplink data at a second data rate. The base station may transmit a second resource allocation to the field unit. After receiving the second resource allocation, the field unit may transmit additional uplink data to the base station at the second data rate based on the second resource allocation.

Generating first pilot symbols and second pilot symbols is disclosed. A frame, to send in an uplink transmission, may have a first portion and a second portion. The first portion may include the first pilot symbols and data symbols. The second portion may include the second pilot symbols without data symbols.

Channel structure for a wireless communication system

Data rate allocation decisions are made for a communications channel. A message is sent on a communication channel such as on a paging channel. The message indicates a forward Effective Radiate Power (ERP) of a pilot signal transmitted. The remote station then determines the received signal strength of this pilot signal, taking into account receiver gains. The path loss may be estimated as the difference between the forward ERP data value received and the detected received pilot power. This transmit power level information is encoded as a digital data word together with the forward path loss information. Upon transmission, the forward path loss estimate as calculated and the output power value can then help determine the amount of excess power available. This is indicative of the amount of dynamic range available in the transmit power amplifier. Coding rates which require a higher dynamic range may be acceptable for use.

Growing community of inventors

Escondido, CA, United States of America

Antoine Jean Rouphael