Abstract:
métodos e arranjos para transmitir e receber informação de controle de downlink para comunicação móvel sem fio. algumas modalidades fornecem um método para transmitir um canal de controle de downlink em pelo menos um bloco de recursos. o canal de controle de downlink compreende um conjunto de grupos de elementos de recurso. o método pode ser executado por um nó de transmissão, por exemplo, um enb. o nó de transmissão determina primeiro se deve transmitir o canal de controle de downlink usando transmissão localizada ou distribuída. em resposta à determinação de usar a transmissão localizada, o nó de transmissão executa a transmissão de tal forma que todos os grupos de elementos de recurso no conjunto, que estão compreendidos no mesmo bloco de recursos, sejam mapeados na mesma porta de antena, e a porta de antena depende de qual subconjunto dos grupos de elementos de recurso é usado para o canal de controle de downlink.
Abstract:
transmissão flexível de mensagens em um sistema de comunicação sem fio com múltiplas antenas de transmissão. trata-se de dispositivos e métodos para transmitir informação em blocos de recurso entre uma estação base e um ou mais dispositivos de comunicação. em cada bloco de recurso (rb) usado para uma transmissão de canal de controle ou dados, uma pluralidade de regiões não sobrepostas de elementos de recurso (res) é definida. cada região está associada com um ou múltiplos símbolos de referência exclusivos (rss), e pode ser ainda associada com uma ou mais portas de antena. quando o equipamento de usuário (eu) demodula a informação que ele recebe em uma região particular de um rb, ele usa o rs e/ou a porta de antena associada com essa região. o rs e/ou a informação de porta de antena pode ser usada, por exemplo, para estimar um canal da rede de comunicação ou demodular e decodificar os dados contidos dentro das regiões associadas.
Abstract:
According to some embodiments, a method in a wireless network element of transmitting a transport block comprises determining a modulation coding scheme for a transmission of the transport block; determining a category type of a wireless device that will transmit or receive the transport block; determining, using the category type of the wireless device, an encoding soft buffer size (NIR) for the transport block; adjusting, using the modulation coding scheme, the encoding soft buffer size (NIR) by a factor (KH); encoding the transport block, according to the determined modulation coding scheme and the adjusted encoding soft buffer size; and transmitting the transport block. In particular embodiments, the determined modulation coding scheme is 256 Quadrature Amplitude Modulation (256QAM) and the factor (KH) is 4/3.
Abstract:
Devices and methods for suppressing interference in inter-cell and intra* ceil network communication. First and second received signals are received at a communication device, the first and second received signals comprising, respectively, reference signais and data signais. Estimated channel vectors are calculated from the first received signals, and estimated data covanance matrices are calculated from the second received signals. A plurality of combining weight vectors are determined based on the estimated channel vectors and the estimated data covariance matrices. The second received signals are then combined with the plurality of combining weight vectors to obtain a plurality of combined signals, wherein interference in the second received signals has been suppressed in the plurality of combined signals.
Abstract:
A system, method and node for modulation and coding scheme adjustment for a Long Term Evolution (LTE) shared Data Channel. The method determines an actual number of orthogonal frequency division multiplexing (OFDM) symbols, NOS utilized for the shared Data Channel. A modulation order for transmission of data on the shared Data Channel is increased when the actual number of OFDM symbols Nos is less than 11 and decreased when NOS is more than 11. A modulation and coding scheme field (I MCS ) of a downlink control information of the shared Data Channel may also be determined. If o = IMCS +11- NOS = 28, the modulation order is modified by utilizing a factor of (IMCS + 11 - NOS ) in a standardized modulation scheme. If it is determined that IMCS + 11 - NOS 28, the modulation order is set to 64 Quadtrative Amplitude Modulation (64QAM).
Abstract:
A system, method and node for unambiguous encoding of Physical Downlink Control Channel (PDCCH) channels in a Long Term Evolution (LTE) telecommunications system to remove detection errors. The method includes the step of modifying a size of a circular buffer by excluding at least one coded bit from the circular buffer. The circular buffer collects interleaved bits from a PDCCH payload having a plurality of bits. The PDCCH payload is encoded with a convolutional code. The bits of the PDCCH payload are then interleaved. The interleaved bits are collected into the modified circular buffer. The bits are then selected from the modified circular buffer for transmission.
Abstract:
In one or more embodiments, a method of processing a soft value sequence according to an iterative soft-input-soft-output (SISO) algorithm comprises carrying out sliding-window processing of the soft value sequence in a first iteration using first window placements and in a second iteration using second window placements, and varying the window placements between the first and second iterations. In at least one embodiment a communication receiver circuit is configured to carry out iterative SISO processing, wherein it processes a soft value sequence using sliding windows, and wherein it varies window placements between one or more iterations. The communication receiver circuit comprises, for example, all or part of a turbo decoding circuit or other type of iterative block decoding circuit, an equalization and decoding circuit, a soft demodulation and decoding circuit, a multi-user detection and decoding circuit, or a multiple-input-multiple-output detection and decoding circuit.
Abstract:
According to methods and apparatus taught herein, user equipments (UEs) in a wireless communication network are scheduled based on determining received signal power densities for a plurality of UEs to be scheduled, allocating UEs to scheduling intervals based on a sorting of their received signal power densities, and assigning UEs in the same scheduling interval to mirror frequency bands within an available frequency spectrum according to the sorting. For example, UEs to be scheduled are assigned to a given scheduling interval in rank order of their received signal power densities until the scheduling interval is fully allocated. Remaining UEs are assigned in rank order to one or more other scheduling intervals, and the process may be repeated or otherwise carried out on an ongoing basis. Such an allocation scheme tends to minimize both adjacent frequency and mirror frequency interferences between UEs scheduled in the same interval.