Abstract:
Apparatus and methods implement aggregation frames and allocation frames. The aggregation frames include a plurality of MSDUs or fragments thereof aggregated or otherwise combined together. An aggregation frame makes more efficient use of the wireless communication resources. The allocation frame defines a plurality of time intervals. The allocation frame specifies a pair of stations that are permitted to communicate with each other during each time interval as well as the antenna configuration to be used for the communication. This permits stations to know ahead of time when they are to communicate, with which other stations and the antenna configuration that should be used. A buffered traffic field can also be added to the frames to specify how much data remains to be transmitted following the current frame. This enables network traffic to be scheduled more effectively.
Abstract:
A communication system, that includes a base station and a terminal, whereby the base station includes, a transmitting unit that transmits a control channel to the terminal with use of a control channel format selected from among a plurality of control channel formats, each including modulation scheme information, according to whether Multiple Input Multiple Output (MIMO) transmission is applied or not, and wherein the terminal includes, a receiving unit that receives the control channel transmitted from the base station, wherein a number of bits indicating a modulation scheme included in a control channel format to be selected when the MIMO transmission is applied is greater than that included in a control channel format to be selected when the MIMO transmission is not applied.
Abstract:
A communication system having two communication units configured for wireless communication and a method for wireless communication. Each of the communication units includes a communication controller using at least two communication protocols: a first protocol for communicating having a first error rate threshold and a fixed data rate, and a second protocol for communicating having a second error rate threshold being higher than the first error rate threshold and a non-fixed data rate. The communication controller switches between the first protocol and the second protocol.
Abstract:
Point to multipoint wireless communication, including automatic retransmission and error recovery for packet oriented point to multipoint communication, which integrates adaptive and dynamic responsiveness for parameters for automatic retransmission using wireless communication. A wireless communication link is divided into a downstream portion and an upstream portion. Parameters are selected for automatic retransmission independently for the downstream portion and the upstream portion of the wireless communication link. A BSC controls the selection of parameters for automatic retransmission for all CPE within a cell. As part of a TDD frame, in which the BSC and the CPE share communication bandwidth using a TDMA technique, the BSC includes its selection of parameters for automatic retransmission to be used by CPE within a control section of the TDD frame. The BSC dynamically and adaptively determines new selected parameters for automatic retransmission, in response to conditions of a wireless communication link with each independent CPE. The BSC dynamically and adaptively allocates acknowledgement time slots within the upstream portion of the TDD frame, for use by each selected CPE. The BSC allocates some portion of the upstream bandwidth as a shared resource and some portion of the upstream bandwidth as unshared when there are messages received but not yet acknowledged. The BSC dynamically and adaptively response to acknowledgement and non-acknowledgement messages from each selected CPE, to integrate the automatic retransmission protocol with the TDD frame and the TDMA technique used within that frame.
Abstract:
A terminal that includes a control channel demodulating part configured to have a control channel format notified from a base station which transmits a control channel with the use of the control channel format, selected from among a plurality of control channel formats, each including modulation scheme information, having different number of types of control parameters according to whether Multiple Input Multiple Output (MIMO) transmission is applied or not, and demodulate the control channel received from the base station; and a data channel demodulating part configured to demodulate a data channel received from the base station with the use of a result of the demodulation of the control channel carried out by the control channel demodulating part, and when the number of bits indicating a modulation scheme selected format when the MIMO transmission is applied is greater than when the MIMO transmission is not applied.
Abstract:
An indicator of throughput for one or more network elements is received. A plurality of slots are allocated to a plurality of devices that are operating using a plurality of combinations of modulation and coding. This allocation is based upon the indicator of throughput for the one or more network elements. An indicator of throughput for one or more network elements is received. A plurality of requests for wireless throughput are received from a plurality of wireless devices. Wireless throughput for each of the plurality of wireless devices is allocated based on a wireless throughput indicator associated with each of the plurality of wireless devices and the indicator of throughput.
Abstract:
The present invention provides a communication method. The method includes: determining, by a first base station serving a first cell, a position of an almost blank subframe and transmission power of the almost blank subframe according to obtained adjustment information about a second cell of a second base station; and determining a frame structure for the second cell according to the adjustment information, the position of the almost blank subframe, and the transmission power of the almost blank subframe. The present invention further provides a base station and a terminal device. With the present invention, transmission power of each almost blank subframe may be adaptively adjusted according to the adjustment information about the second cell, so that interference between the first cell and the second cell is reduced.
Abstract:
A system, apparatus and method is disclosed for multiband wireless communication. Frequency bands and/or transmission formats are identified as available within a range for wireless communication. The system evaluates signal quality metrics for each frequency band and selects a communication method based on the evaluation. Multiple frequency bands and communication methods can be utilized by the system such that a combination of licensed, unlicensed, semilicensed, and overlapped frequency bands can be simultaneously used for communication. The system monitors communications and can report link performance for adaptive control of the selected communication methods.
Abstract:
A High Definition (HD) video wireless transmission method for transmitting a data packet for a video frame of an HD video is provided. The method includes: receiving the video frame which comprises a video frame size; acquiring a payload length and a Minimal Required Transmission Time (MRTT) associated with the video frame, wherein the MRTT is a minimal time bound for transmitting the video frame to a receiving end; performing partitioning to the video frame for acquiring the data packet according to the payload length; and performing scheduling to the data packet according to the MRTT, and the scheduled data packet is transmitted to the receiving end.
Abstract:
A communication terminal device is operable to multiplex a plurality of channel signals based on TFC (Transport Format Combination) selected by performing a TFC selection and transmit it. The communication terminal device includes a storage unit operable to store a plurality of combination of classifications to which the gain factors belong, as a combination of gain factors for weighting each of the plurality of channel signals, and to store a quantity of reduction of a maximum transmission power when the plurality of channel signals in association with each combination of the plurality of classifications are multiplexed and transmitted, and a TFC selection unit operable to select the TFC by reading out the quantity of reduction in association with the combination of the classification corresponding to the combination of the gain factors in each TFC from the storage unit when the TFC selection is performed.