Abstract:
PROBLEM TO BE SOLVED: To make an efficient use of communication resource in data rate control of reverse link communication in a communicating system. SOLUTION: The communication system includes determining movement for choosing payload size (data rate) of reverse link transfer from a mobile station to a base station. The mobile station can store a predetermined table containing a power level ratio (TPR) of traffic channel and pilot channel, and each entry corresponds to the size of data payload, and namely as a result corresponds to a transfer data rate in the predetermined time frame. The payload size is chosen based on the permitted -TPR. The permitted -TPR and a target -TPR are adjusted according to a TPR command received from a base station. When the permitted -TPR is smaller than the target -TPR, fast-ramp-up adjustment of the permitted -TPR is performed. In the fast-ramp-up mode, a down TPR command is ignored in the adjustment of the permitted -TPR. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method and apparatus for determining the data rate of a reverse link communication.SOLUTION: An embodiment includes transmitting at a null rate on the communication channel only when the station is not transmitting voice, signaling, or data. An embodiment includes determining a maximum requested rate on the basis of the normalized average pilot transmit power and the pilot reference value, and determining the timing of the rate request. An embodiment involves determining a maximum transmission rate. An embodiment involves determining sufficient power and a power-control set point.
Abstract:
PROBLEM TO BE SOLVED: To provide a method and apparatus for attaining duplicate detection and re-ordering for a HARQ transmission. SOLUTION: For duplicate detection, a receiver determines whether a decoded packet x for an ARQ channel y is a duplicate packet based on a packet x and a prior decoded packet for the ARQ channel y. For re-ordering, the receiver determines as follows whether a certain earlier packet is still pending on any other ARQ channel based on prior decoded packets for the ARQ channels, and forwards the packet x only if there are no pending earlier packets. There are no pending earlier packets on another ARQ channel z if (1) a decoded packet has been received on an ARQ channel z at a designated time or later, or (2) a decoded packet has not been received on the ARQ channel z within a time window from current time. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method and device for determining a power control set value. SOLUTION: A station is provided with an antenna for receiving and transmitting a plurality of signals, a receiver connected to the antenna and receiving a plurality of received signals, a controller connected to the receiver and determining a pilot reference level of a current data rate, determining a pilot reference level of a next data rate, determining a difference between the pilot reference level of the current data rate and the pilot reference level of the next data date, and adjusting a power control set value based on the difference when the next data rate is higher than the current data rate, and a transmitter connected to the controller and adjusting the power set value for transmission. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
A channel structure and mechanisms that support effective and efficient allocation and utilization of the reverse link resources. In one aspect, mechanisms are provided to quickly assign resources (e.g., a supplemental channel) as needed, and to quickly de-assign the resources when not needed or to maintain system stability. The reverse link resources may be quickly assigned and de-assigned via short messages (412, 418) exchanged on control channels on the forward and reverse links. In another aspect, mechanisms are provided to facilitate efficient and reliable data transmission. A reliable acknowledgment/negative acknowledgment scheme and an efficient retransmission scheme are provided. Mechanisms are also provided to control the transmit power and/or data rate of the remote terminals to achieve high performance and avoid instability.
Abstract:
Embodiments disclosed herein address the need in the art for efficient management of grant, acknowledgement, and rate control channels. In one aspect, a list associated with a first station is generated or stored, the list comprising zero or more identifiers, each identifier identifying one of a plurality of second stations for sending a message to the first station. In another aspect, sets of lists for one or more first stations are generated or stored. In yet another aspect, the messages may be acknowledgements, rate control commands, or grants. In yet another aspect, messages comprising one or more identifiers in the list are generated. Various other aspects are also presented. These aspects have the benefit of reduced overhead while managing grant, acknowledgment and rate control messaging for one or more remote stations.
Abstract:
Techniques for efficient signaling to and from a plurality of mobile stations are disclosed. In one embodiment, a subset of mobile stations may be allocated a portion (350) of the shared resource with one or more individual access grants (370), another subset may be allocated a portion of the shared resource with a single common grant (370), and yet another subset may be allowed to use a portion of the shared resource without any grant. In another embodiment, an acknowledge and continue command is used to extend all or a subset of the previous grants without the need for additional requests and grants, and their associated overhead. In one embodiment, a traffic to pilot ratio (T/P) is used to allocate a portion of the shared resource, allowing a mobile station flexibility in selecting its transmission format based on T/P.
Abstract:
Algunos aspectos de la presente divulgación proporcionan técnicas y aparatos para operar en una red de espacio blanco de televisión (TVWS); un método ejemplar generalmente incluye recibir, en un aparato, un mensaje con un campo indicando una versión actual de un mapa de espectro de frecuencia no utilizado (por ejemplo, un mapa de espacio blanco (WSM)), el mapa de espectro de frecuencia no utilizado indicando canales utilizables para comunicaciones inalámbricas; determinar si la versión actual del mapa de espectro de frecuencia no utilizado es diferente de una versión previa del mapa de espectro de frecuencia no utilizado; y utilizar un canal para comunicaciones inalámbricas con base en la determinación; otro método ejemplar generalmente incluye tener acceso a una base de datos de los canales disponibles para una ubicación actual de un aparato a través de un aparato de habilitación fijo o portátil vecino y habilitando uno o más aparatos dependientes portátiles para las comunicaciones inalámbricas a través de uno o más de los canales disponibles.
Abstract:
In accordance with an exemplary embodiment of the invention, an apparatus, system, and method efficiently manage reverse link resources by allowing a mobile station to select between transmitting a payload a standard power level and transmitting a smaller payload at a boosted power level. The mobile station, therefore, can autonomously select a QoS (Quality of Service) level for physical layer packets. Based on reverse link transmission information received from a base station, the mobile station derives a reverse link transmission guideline defining the power levels and associated payloads for at least a standard service and boosted service. The mobile station selects a reverse link transmission power level from a plurality of power levels including at least a standard reverse link transmission power level associated with a standard payload size and a boosted reverse link transmission power level associated with a boosted payload size where the standard payload size is greater than the boosted payload size.