Abstract:
PROBLEM TO BE SOLVED: To provide a wireless communication terminal which communicates by a plurality of subcarriers which are divided into a plurality of frequency bands that include one or more subcarriers, respectively. SOLUTION: The wireless communication terminal measures a channel quality indicator (CQI) of a plurality of frequency bands (310), discriminates a subset of a frequency band whose channel quality indicator is measured (320), and transmits a report which discriminates a subset of a frequency band whose channel quality indicator is measured or transmits a report which discriminates a frequency band that is not included in the subset (330). In some embodiments, a subset CQI value related to a subset of frequency band is included in the report at least. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To cope with a requisite problem for a cyclic prefix whose length is variable in a mixed mode radio communication system. SOLUTION: A method in a radio communication network infrastructure entity (200) includes a process for transmitting a sequence of a plurality of symbols. One portion of the symbols is related to a first transmission mode, for example a point-to-point transmission mode. Another portion of the symbols is related to a second transmission mode that is different from the first one, for example a point-to-multipoint transmission mode. The method also comprises a process for converting the format of symbols related to the first transmission mode by using a first cyclic prefix before the process for transmitting the symbols, and a process for converting the format of symbols related to the second transmission mode by using a second cyclic prefix. In one embodiment, the continuation time of the cyclic prefix is different. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
A method for selective use of control channel element (CCE)-based implicit pointing. The method includes the step of determining whether a number of multiple user elements (UE) within a multi-user multiple-input multiple-output (MU-MIMO) group is greater than the number of resource blocks allocated to the MU-MIMO group. If the number of UEs in the MU-MIMO group is greater than the number of resource blocks allocated to the MU-MIMO group, the method further includes transmitting to each of the UEs of the MU-MIMO group acknowledgements on acknowledgement channels within a first acknowledgement bank and acknowledgements on acknowledgement channels within a second acknowledgement bank. A first portion of the UEs of the MU-MIMO group receives the acknowledgements on the acknowledgement channels within the first acknowledgement bank and a second portion of the UEs of MU-MIMO group receives the acknowledgements on the acknowledgement channels within the second acknowledgement bank.
Abstract:
A method in a wireless communication device (103, 110) comprises attempting to decode combined control channel elements received at the wireless communication device, determining whether the attempted decoding of the combined control channel elements is successful, and attempting to decode a single control channel element if the attempt to decode the combined control channel elements is not successful
Abstract:
A method and apparatus is provided for transmitting an orthogonal frequency domain multiple access (OFDMA) signal including a synchronization channel signal transmitted within a localized portion of a bandwidth of the OFDMA signal (818), the synchronization channel signal having predetermined time domain symmetry within the localized portion of the bandwidth (816). The synchronization channel signal enables an initial acquisition and cell search method with low computational load which provides OFDMA symbol timing detection and frequency error detection by differential processing of sequence elements of the synchronization channel signal (1112) and frame boundary detection and cell specific information detection (1114) in an OFDMA system supporting multiple system bandwidths, both synchronized and un-synchronized systems, a large cell index and an OFDMA symbol structure with both short and long cyclic prefix length.
Abstract:
A wireless communication terminal (103, 110) and scheduling entity and methods therein including providing a radio resource allocation having a plurality of sub-carriers that are a subset of available sub-carriers to a wireless communication terminal, wherein the available sub-carriers include a DC sub-carrier. If the DC sub-carrier is between any two sub-carriers of the allocation, the DC sub-carrier and all but one edge-most sub-carrier of the plurality of sub-carriers are designated for transmission. If the DC sub-carrier is not between any two sub-carriers of the allocation, all of the sub-carriers except the DC sub-carrier from the plurality of sub- carriers are designated for transmission.
Abstract:
To address the need for a resource allocation scheme that results in a better tradeoff between cell-edge performance and overall spectral efficiency, a communication system (100) is provided that allocates uplink transmit power to user equipment (UEs) (102, 104) based on a fractional power control scheme (300). In another embodiment, since the cell-edge users are also likely to be power limited, the communication system may implement a minimized uplink transmission bandwidth resource allocation scheme (404, 406, 408, 410, 412, 414) that may work with the fractional power control scheme to achieve a level of performance desired for uplink transmissions in 3GPP (Third Generation Partnership Project) and 3GPP2 Evolution communication systems.
Abstract:
Un método para el uso selectivo de una señalización implícita basada en el elemento de canal de control (CCE). El método incluye la etapa para determinar si un número de múltiples elementos del usuario (UE) dentro un grupo de múltiple entrada múltiple salida de múltiple usuario (MUMIMO) es mayor que el número de bloques de recursos asignados al grupo de MU-MIMO. Si el número de UEs en el grupo de MU- MIMO es mayor que el número de bloques de recursos asignados al grupo de MU-MIMO, el método incluye además transmitir a cada uno de los UEs del grupo de MU-MIMO confirmaciones en canales de confirmación dentro de un primer banco de confirmación y confirmaciones en los canales de confirmación dentro de un segundo banco de confirmación. La primera porción de los UEs del grupo de MU-MIMO recibe las confirmaciones en los canales de confirmación dentro del primer banco de confirmación y una segunda porción de los UEs del grupo de MU-MIMO recibe las confirmaciones en los canales de confirmación dentro del segundo banco de confirmación.
Abstract:
Se proporciona un método y aparato para indicar a una unidad de comunicación una pluralidad de esquemas de modulación y codificación (MCS) que se utiliza para comunicación. Se determina un primer MCS para los primeros bloques de recursos que se envían a una primera unidad remota o estación base y un segundo MCS se determina para un segundo bloque de recursos que se envía a la unidad remota o estación base. Se transmite un mensaje que indica el primer y el segundo MCS y también indica los primeros bloques de recursos y el segundo bloque de recursos. Finalmente, una primera PDU se transmite a la unidad remota o estación base en el primer tiempo utilizando el primer MCS y los primeros bloques de recursos y una segunda PDU se transmite a la unidad remota o estación base en el primer tiempo utilizando el segundo MCS y el segundo bloque de recursos.