Abstract:
PROBLEM TO BE SOLVED: To facilitate management of wireless communications in a heterogeneous wireless access point (AP) environment.SOLUTION: System data of an over-the-air message can be configured to include information identifying a distinct type of transmitting base station. In some aspects, the information can include an access type of the base station and/or a sector ID for distinguishing the base station among large numbers of other base stations. According to other aspects, the information can include wireless channel resources designated for a particular type of base station, or blanked by the transmitting base station, to facilitate interference reduction on such resources. By employing aspects of wireless communication management, efficient and reliable communication can be affected in large heterogeneous AP networks.
Abstract:
PROBLEM TO BE SOLVED: To provide a system, an apparatus and a method for scheduling users on a bandwidth smaller than the entire bandwidth, in order to support mobile stations that cannot demodulate the entire bandwidth or that can demodulate a bandwidth smaller than the entire bandwidth.SOLUTION: A processor is configured to: receive a plurality of communications from each of a plurality of wireless access terminals; in response to the communications, make respective related determinations whether the respective related wireless access terminals are simultaneously operable on one or more carriers; on the basis of the determinations, assign at least one carrier to each of the wireless access terminals; and, on each of the plurality of assigned carriers, instruct a plurality of control channel transmissions.
Abstract:
PROBLEM TO BE SOLVED: To provide techniques for using multiple modulation schemes for a single packet.SOLUTION: An embodiment comprises: encoding a data packet to obtain a plurality of code bits for the data packet; forming a plurality of blocks of code bits with the plurality of code bits; determining a modulation scheme to use for each of the plurality of blocks, where at least two different modulation schemes are used for the plurality of blocks; and mapping the code bits in each of the plurality of blocks in accordance with the modulation scheme used for the block to generate the modulation scheme for the block, where a plurality of blocks of modulation symbols are generated for the plurality of blocks of code bits.
Abstract:
PROBLEM TO BE SOLVED: To improve resistance to interference and maintain a code rate in spite of increase of transmissions in a MIMO SCW (single code word) design employing HARQ, by reducing a rank, e.g., of a user device, stepwise as the number of transmissions from the user increases.SOLUTION: From a rate prediction component 306 and a MIMO transmission rank M specified by a receiver 318 via feedback, coded symbols are demultiplexed by a demultiplexer 308 to generate streams, which are then spatially mapped by a spatial mapping component 310 to Mantennas. A plurality of individual OFDM modulators 312, 314, and 316 then modulate the Mstreams for transmission by the Mantennas.
Abstract translation:要解决的问题:为了提高抗干扰性并且尽管在采用HARQ的MIMO SCW(单码字)设计中的传输增加,通过降低诸如用户设备的等级,逐步地 因为来自用户的传输的数量增加。 解决方案:从接收机318通过反馈指定的速率预测组件306和MIMO传输级M,编码符号由解复用器308解复用以产生流,然后将空间映射组件310空间映射到M T SB>天线。 然后,多个单独的OFDM调制器312,314和316调制用于通过M T SB>天线发射的M SB SB =“POST”> T“。 版权所有(C)2013,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide systems and methods that facilitate mitigating an effect of non-linear distortion from a power amplifier on a spectral mask margin.SOLUTION: A power limit indication by a power limit indicator 410 of a mobile device 404 can be analyzed when a base station 402 schedules the mobile device 404. A subband scheduler 408 of the base station can schedule mobile devices with power limitations on inner subbands. Other mobile devices can employ remaining portions of an allocated spectrum. Further, the mobile device 404 can evaluate and establish backoff for a power amplifier 414 using a backoff evaluator 412 on the basis of the subband scheduling communicated from the base station 402.
Abstract:
PROBLEM TO BE SOLVED: To provide techniques of efficiently transmitting various types of data in an SC-FDMA system.SOLUTION: In an SC-FDMA system that utilizes IFDMA or LFDMA, a transmitter generates modulation symbols for different types of data and performs CDM on at least one data type. For example, the transmitter may apply CDM to signaling and/or pilot sent on frequency subbands and symbol periods that are also used by at least one other transmitter. To apply CDM to a given data type (e.g., signaling), the transmitter performs spreading on the modulation symbols for that data type. CDM may be applied across symbols, samples, both samples and symbols, frequency subbands, and so on.
Abstract:
PROBLEM TO BE SOLVED: To provide systems and methods that facilitate providing time-division duplexed beam-forming support in traditional non-time-division duplexed wireless systems, such as an OFDMA system, a WCDMA(R) system, etc.SOLUTION: A base station analyzes pilot information, such as a portion of bandwidth over which a user device is transmitting (402), and transmits on a downlink using a pre-hopped portion of bandwidth utilized by the user device on the preceding reverse link time slot (404). The base station then transmits bandwidth segment reassignment to the user device to facilitate bandwidth segment hopping between user devices served by the base station (406). Additionally, the base station can instruct the user device to provide on-demand pilot information to resolve ambiguity related thereto.
Abstract:
PROBLEM TO BE SOLVED: To provide systems and methodologies that facilitate transmitting low-density parity-check encoded communications in a wireless communication network and incrementing such codes in response to requests from receiving devices.SOLUTION: The LDPC codes have associated constraints allowing the codes to be error-corrected upon receipt. Requests for incremented codes are possible when the original code can be too error-ridden to properly decode, e.g. in the case of low transmission power or high interference. In this case, additional nodes can be added to current and/or subsequent communications to facilitate adding more complex constraints to the LDPC codes. In this regard, large codes require only a small number of validly transmitted nodes to predict error-ridden values as the additional constraints render less ambiguity in possible node value choices.
Abstract:
PROBLEM TO BE SOLVED: To provide a transmitter generating a pilot having a constant time-domain envelope and a flat frequency spectrum based on a polyphase sequence.SOLUTION: A first sequence of pilot symbols is formed based on a polyphase sequence and replicated a plurality of times to obtain a second sequence of pilot symbols. A phase ramp is applied to the second pilot symbol sequence to obtain a third sequence of output symbols. A cyclic prefix is appended to the third sequence of output symbols to obtain an IFDMA symbol, which is transmitted in the time domain via a communication channel. A pilot LFDMA symbol may also be generated with a polyphase sequence and multiplexed using TDM or CDM. A receiver derives a channel estimate based on received pilot symbols and using minimum mean-square error, least-squares, or some other channel estimation technique.
Abstract:
PROBLEM TO BE SOLVED: To provide methods and devices for providing flexible channel information feedback. SOLUTION: The device is provided with a memory and a processor, which is configured to select a type of channel information feedback based on a reporting format of a wireless communication device, and the processor is configured to select the type based on instructions corresponding to the reporting format. The type includes an SDMA CQI and an appropriate segment CQI and further includes an MCW, SCW and SISO CQIs. In some cases, this may be according to reporting types assigned by one or more sectors, with different reporting types for each sector. In other cases, a reporting mode is used to determine the reporting types to be utilized. COPYRIGHT: (C)2011,JPO&INPIT