公开(公告)号：EP1810417A2

公开(公告)日：2007-07-25

申请号：EP04795368.2

申请日：2004-10-15

申请人： Flarion Technologies, INC.

发明人： LAROIA, Rajiv ,  LANE, Frank, A. ,  LI, Junyi

IPC分类号： H04B7/00 ,  H04J1/00 ,  H04B7/212

CPC分类号： H04L5/0044 ,  H04L5/0048 ,  H04L5/0053

摘要： Methods and apparatus for using high power narrow signals, e.g., tones, for communicating transmitter information without putting the full transmission power available into the transmitted tone or tones are described. User data is transmitted in parallel with transmitter information in many embodiments with the user data being allocated more than 20% of the transmitter's maximum output power in many cases. Buy using an amount of power on the tones used to communicate transmitter information while simultaneously transmitting user data with more than 20% of the available transmission power, efficient bandwidth utilization is achieved while still ensuring a high probability that that the transmitter information signals will be received and detectable using simple energy detection techniques and without the need for timing synchronization with the transmitter to be achieved for success interpretation of the transmitter information.

公开(公告)号：EP1787460A2

公开(公告)日：2007-05-23

申请号：EP05773580.5

申请日：2005-07-20

申请人： Flarion Technologies, INC.

发明人： O'NEILL, Alan

IPC分类号： H04M15/00

CPC分类号： H04L12/14 ,  H04L12/145 ,  H04L12/1485 ,  H04L12/1496 ,  H04L43/0882 ,  H04L47/70 ,  H04L47/762 ,  H04L47/808 ,  H04L47/824 ,  H04M15/00 ,  H04M15/8016 ,  H04M15/81 ,  H04M2215/0112 ,  H04M2215/2026 ,  H04M2215/32 ,  H04M2215/7414 ,  H04W4/24

摘要： Utilization of resources used to provide a service, and/or costs associated with providing system resources for a service, are tracked in a system where the available resources vary depending on a variety of conditions including resource utilization by other users. The methods are well suited for systems such as mobile communications systems, where the amount of resources and/or costs to a system of providing a service are dynamic and can change on a relatively rapid time scale. Resource unitization is tracked on a per subscriber basis. Service charges can be determined as a function of both the amount of resources consumed and the amount of data delivered, with the amount of resources being used to deliver a fixed amount of data units varying as a function of environmental and/or other conditions. Service charges are sometimes determined as a function of the impact of providing the service to a first user on other system users.

公开(公告)号：EP1735930A1

公开(公告)日：2006-12-27

申请号：EP04795314.6

申请日：2004-10-15

申请人： Qualcomm Flarion Technologies, Inc.

发明人： LAROIA, Rajiv ,  LI, Junyi ,  LANE, Frank, A.

IPC分类号： H04B17/02 ,  H04B15/00

CPC分类号： H04B1/005 ,  H04B1/1027 ,  H04B1/406 ,  H04B17/327 ,  H04B17/382

摘要： Receivers accommodating carrier frequency selection methods in wireless communications systems employing multiple carrier frequencies are described. Although the receiver is tuned to a single band, an estimate of the channel quality corresponding to the currently used carrier and an alternative carrier is generated without switching between carriers. Transmitters of different cells and/or different sectors primarily use different carrier frequencies but periodically transmit using a neighboring sector's carrier frequency. Mobile node receivers use a single RF chain with a controllable RF filter to receive and process a signal within a first selected carrier band including two components, a first signal component identified with the first currently selected band and a second signal component identified with a second alternative band. Separate quality indicator values are obtained from the first and second signal components, compared, and a determination is made as to whether the receiver's RF filter should be switched to the second band.

公开(公告)号：EP1696786A2

公开(公告)日：2006-09-06

申请号：EP04814978.5

申请日：2004-12-17

申请人： Qualcomm Flarion Technologies, Inc.

发明人： RICHARDSON, Tom

IPC分类号： A61B1/00

CPC分类号： H03M13/1128 ,  H03M13/1111 ,  H03M13/2963 ,  H03M13/3723 ,  H03M13/6331 ,  H04L1/0051 ,  H04L1/0057 ,  H04L25/03171

摘要： An iterative message passing decoder, e.g., an LDPC decoder (404), operating in conjunction with a soft input - soft output signal processing unit (402), e.g., an ISI detector, has an error floor performance region influenced by the decoder’s suboptimal message passing nature. Error floor reduction is achieved by a simple message re-initialization mechanism. Decoder edge states, e.g., constraint to variable node messages in decoder memory, are reinitialized, e.g., for an iteration, during the decoding after soft values provided by signal-processing unit (402) have improved. During the message re-initialization and for some subsequent amount of iterative decoder processing, extrinsic information (416) fed back from the decoder to the signal processing unit (402) and/or soft values delivered to the decoder from the signal processing unit (402), in an outer communications loop, is temporarily frozen, e.g., using a switch and a buffer (410). Then, the outer communications loop is restored as the decoding continues, achieving improved decoding performance.

公开(公告)号：EP1695568A1

公开(公告)日：2006-08-30

申请号：EP04795463.1

申请日：2004-10-15

申请人： Flarion Technologies, INC.

发明人： LAROIA, Rajiv ,  LI, Junyi ,  LANE, Frank, A.

IPC分类号： H04Q7/20 ,  H04Q7/00

CPC分类号： H04W36/18 ,  H04W36/06

摘要： A mobile communications device initiates a handoff from its current base station (BS) sector network attachment point to a new BS sector. The mobile sends a handoff request over its current wireless link to the current BS sector, which forwards the request to the new BS sector, e.g., via a network link. The new BS sector processes the request assigning dedicated resources, e.g., an identifier and dedicated resources, e.g. an identifier and dedicated uplink segments. Information identifying the allocated resources is conveyed from the new BS sector via the current BS sector to the mobile. The mobile determines the time of the allocated dedicated segments based upon a received beacon signal from the new BS sector with known timing relationships to dedicated segments. The mobile breaks the original wireless link just prior to the time of the first assigned dedicated segment. The mobile communicates information on the assigned dedicated segments to perform registration operations, e.g., timing synchronization and power control, establishing a new wireless link.

摘要翻译： 移动通信设备发起从其当前基站（BS）扇区网络连接点到新BS扇区的切换。 移动台通过其当前无线链路向当前BS扇区发送切换请求，该当前BS扇区例如经由网络链路将请求转发到新的BS扇区。 新的BS扇区处理分配专用资源的请求，例如标识符和专用资源，例如， 标识符和专用上行链路段。 标识分配的资源的信息从新的BS扇区经由当前BS扇区传送到移动站。 移动台基于从具有已知定时关系的新BS扇区接收的信标信号确定分配的专用段的时间到专用段。 移动台在第一个分配的专用段之前中断原始无线链路。 移动台传送关于所分配的专用段的信息以执行注册操作，例如定时同步和功率控制，建立新的无线链路。

公开(公告)号：EP1535482A4

公开(公告)日：2006-08-16

申请号：EP03785063

申请日：2003-08-07

申请人： FLARION TECHNOLOGIES INC

发明人： LAROIA RAJIV ,  LI JUNYI ,  UPPALA SATHYADEV VENKATA

IPC分类号： H04W76/04 ,  H04B7/005 ,  H04L12/56 ,  H04M1/73 ,  H04W24/00 ,  H04W52/02 ,  H04W52/08 ,  H04W52/28 ,  H04W52/60 ,  H04W56/00 ,  H04W68/02 ,  H04W72/00 ,  H04W88/02 ,  H04Q7/20

CPC分类号： H04W72/048 ,  H04W16/12 ,  H04W16/14 ,  H04W24/00 ,  H04W36/06 ,  H04W36/20 ,  H04W52/0235 ,  H04W52/08 ,  H04W52/281 ,  H04W52/283 ,  H04W52/286 ,  H04W52/287 ,  H04W52/288 ,  H04W52/60 ,  H04W56/00 ,  H04W68/02 ,  H04W68/025 ,  H04W72/00 ,  Y02D70/00 ,  Y02D70/23

摘要： The use of multiple states of mobile communication device (14) operation to allow a single base station (12) to support a relatively large number of mobile nodes (14, 16) is described. The various states require different amounts of communications resources, e.g., bandwidth. Four supported states of operation are a on-state (404), a hold-state (410), a sleep-state (408), and an access-state (402). Each mobile node in the on-state (404) is allocated communication resources to perform transmission power control signaling, transmission timing control signaling and to transmit data as part of a data uplink communications operation. Each mobile node in the hold-state (410) is allocated communication resources to perform transmission timing control signaling and is provided a dedicated uplink for requesting a state transition and a shared resource for transmitting acknowledgements. In the sleep state (408) a mobile node is allocated minimal resources and does not conduct power control signaling or timing control signaling.

公开(公告)号：EP1673876A2

公开(公告)日：2006-06-28

申请号：EP04795464.9

申请日：2004-10-15

申请人： Flarion Technologies, INC.

发明人： LAROIA, Rajiv ,  LANE, Frank, A.

IPC分类号： H04B1/38

CPC分类号： H04W36/0072 ,  H04L5/0042 ,  H04L5/0048 ,  H04L5/0053 ,  H04L27/2602 ,  H04W36/08

摘要： A wireless communications system, e.g., an OFDM system, uses a plurality of carrier frequencies each with an associated frequency band. A base station sector transmitter in the system transmits ordinary signaling, e.g., user data, in its own assigned band. In addition the sector base station transmitter periodically transmits beacon signals into its own frequency band and the frequency bands used by adjacent sector transmitters for their ordinary signaling. Beacon signals, being short duration high power signals with sector transmission power concentrated on one or a few tones, are easily detectable. Each beacon signal may be identified as to the source base station sector transmitter, e.g., based on tone. A mobile node, tuned to a single carrier band, receives a plurality of beacon signals, identifies the sources of the received beacons, compares the received strength of the beacons, and makes handoff decisions, without having to switch carrier band.

公开(公告)号：EP1673684A2

公开(公告)日：2006-06-28

申请号：EP04795100.9

申请日：2004-10-15

申请人： Flarion Technologies, INC.

发明人： LAROIA, Rajiv ,  STANSKI, Charles ,  LI, Junyi

IPC分类号： G06F1/00

CPC分类号： H04W48/10 ,  H04L5/0007 ,  H04L5/0039 ,  H04L5/0048 ,  H04L25/0226 ,  H04L27/2655 ,  H04W48/16

摘要： Transmitting signals to facilitate detection of a frequency band (406) and/or carrier signal to be used for communication with a basestation are described. The detected frequency band may be a downlink frequency band (420). The uplink frequency band (424) to be used can be determined from a know frequency relationship between the detected downlink carrier and a corresponding uplink carrier or by monitoring the detected downlink frequency band for information indicating the uplink frequency band/carrier to be used. Carrier search methods (402) involving searching for the narrowband high power signals (404) used to provide carrier information and/or to indicate the frequency band (406) to be monitored are described. Power detection methods can be used to detect the high power signals avoiding the need for symbol timing synchronization and/or channel estimation with regard to detection of the signals used to locate the frequency band to be used.

公开(公告)号：EP1111834A3

公开(公告)日：2006-02-22

申请号：EP00311073.1

申请日：2000-12-12

申请人： Flarion Technologies, INC.

发明人： Laroia, Rajiv ,  Li, Junyi ,  Uppala, Sathyadev Venkata ,  Rangan, Sundeep

IPC分类号： H04L5/02

CPC分类号： H04L5/026 ,  H04B1/7136 ,  H04B1/7143 ,  H04L5/0007

摘要： Tone sequences in a frequency hopping arrangement are generated and assigned by advantageously employing a combination of a sequence generator and a sequence assignor to generate sequences and assign them on a time slot by time slot basis. In a transmitter, the sequence generator and sequence assignor, in combination with a user tone assignor are employed to generate and assign tone sequences to a user on a time slot by time slot basis. In a receiver, the sequence generator and sequence assignor, in combination with a user tone identifier are employed to generate sequences and to identify incoming tone sequences to a user on a time slot by time slot basis. Specifically, the sequence assignment in a time slot is such that a prescribed plurality of sequences is assigned to a particular user. This partitioning of the tasks facilitates the use of a sequence generator that generates sequences with the desirable properties of interference and frequency diversity and, which, leaves the task of properly assigning these sequences among one or more users to the sequence assignor. The sequence assignor functions in such a manner that the interference and frequency diversity properties for the one or more users are preserved, and this is further facilitated by assigning sequences in such a manner that they maximally overlap prior assigned sequences. In one embodiment of the invention, a Latin square based sequence is generated in accordance with a first prescribed process. In a second embodiment of the invention, a Latin cube based sequence is generated in accordance with a second prescribed process. In a third embodiment of the invention, a Latin hypercube of prescribed dimension based sequence is generated in accordance with a third prescribed process. In still another embodiment of the invention, the principles of the invention are employed to realize frequency band hopping.

公开(公告)号：EP1597883A2

公开(公告)日：2005-11-23

申请号：EP04712896.2

申请日：2004-02-19

申请人： Flarion Technologies, INC.

发明人： LAROIA, Rajiv ,  LI, Junyi ,  SRINIVASAN, Murari

IPC分类号： H04L25/03 ,  H04B1/00 ,  H04B7/00

CPC分类号： H04W52/283 ,  H04L1/1607 ,  H04L1/1861 ,  H04L5/04 ,  H04L27/2604 ,  H04L27/3488 ,  H04W52/24

摘要： Methods of using superposition coding in a communications systems, e.g., a multi-user communications system. Superpostion coding in accordance with the invention occurs in the case of an uplink (1212, 1216) by transmissions of different wireless terminals (1204, 1206) transmitting using the same communications resource, e.g., simultaneously transmitting using the same frequencies. The signals combine in the communications channel resulting in one transmission being superimposed on the other transmission. The device, e.g., base station (1207), receiving the superimposed signals uses superposition decoding techniques to recover both signals. To obtain the benefit of the superposition, assignments of channel segments to multiple wireless terminals is controlled by the base station and/or transmission power levels are controlled by on or more wireless terminals sharing the same uplink communications resource, e.g., time slot, to make sure that the received signals from the different devices will have different received power levels making superposition decoding possible.