54results about How to "Maximize Spectral Efficiency" patented technology

A digital, bi-directional, full duplex communication system employs a wireless media system and wireless IEM system. In one embodiment, the present invention comprises an access point, one or more clients, an ear apparatus and system management software. The present invention also provides a method for bi-directional communication between the remote components and the access point enabling remote system management.

Dynamic allocation of communication channels among communication units (CU) in a communications system. Dynamic channel allocation employs a reservation set for reserving channels and an allocation set corresponding to the reservation set for receiving allocated channels. The reservation set and the allocation set are changed dynamically as a function of network parameters to control the dynamic channel operation. Reservation set information is broadcast downlink to multiple users to reserve an allocation set of uplink radio resources for specific ones of the users. The system uses a modification of the packet data channel (PDCH) of a GPRS/EGPRS or EDGE system which employs an Uplink Status Flag (USF) on each PDCH downlink radio block. The downlink reservation set information is commonly received by all users in the group of users. Allocation delay, bandwidth efficiency and other system parameters are optimized.

A proactive networking system and method is disclosed. The network anticipates the user demands in advance and utilizes this predictive ability to reduce the peak to average ratio of the wireless traffic and yield significant savings in the required resources to guarantee certain Quality of Service (QoS) metrics. The system and method focuses on the existing cellular architecture and involves the design and analysis of learning algorithms, predictive resource allocation strategies, and incentive techniques to maximize the efficiency of proactive cellular networks. The system and method further involve proactive peer-to-peer (P2P) overlaying, which leverages the spatial and social structure of the network. Machine learning techniques are applied to find the optimal tradeoff between predictions that result in content being retrieved that the user ultimately never requests, and requests that are not anticipated in a timely manner.

A base station included in the D2D communication system: a shared resource allocation unit configured to select a resource block having highest performance in D2D communication from a plurality of resource blocks occupied by a plurality of cellular terminals and to set the shared resource block to be shared by a corresponding D2D terminal; an exclusive resource allocation unit configured to select at least one other D2D terminal with which to share an exclusive resource block occupied by the corresponding D2D terminal for the D2D communication and to set the exclusive resource block to be shared by the at least one other D2D terminal; and a power allocation unit configured to create a virtual resource block by matching the shared resource block and the exclusive resource block and to control powers allocated to the shared resource block and the exclusive resource block included in the virtual resource block.

A method of determining a carrier power in a communications system including a processor includes a) setting a power differential between a reference carrier and one or more carriers, b) measuring a number of satisfied users at the power differential, and c) measuring a capacity for the satisfied users at the power differential. The method also includes d) increasing the power differential by a predetermined amount and e) determining, using the processor, that the number of satisfied users at the increased power differential is greater than or equal to the number of satisfied users at the power differential. The method further includes f) repeating a)-c) and g) setting the carrier power at an iterated power level.

A method and an apparatus for wireless communication with dual connectivity are described. The apparatus supports dual connectivity with a first cell and a second cell and the apparatus comprises a radio frequency (RF) and a processor operatively coupled to the RF unit. The second cell is an overlaid virtual cell which is formed by collaborating the first cell and cell ID of the second cell is different from physical cell ID of the first cell when the processor uses primary synchronization signal (PSS), secondary synchronization signal (SSS) or cell-specific common reference signal (CRS) as synchronization signal for the second cell.

Disclosed are methods, systems, and apparatus for maximizing the spectral efficiency of a communications spectrum by providing a means to transmit information continuously in both directions of a radio link on the same center frequency at any given time. One embodiment may be directed to a method of communicating in a point-to-point radio system. The method may include receiving a first signal at a first antenna of a radio head. The first signal may include a transmitted data signal and interfering signals. The method continues by determining a correction signal from a transmitter of the radio head and processing the first signal to remove the interfering signals using the correction signal, and sending a second signal using a second antenna. The first and second signals may be sent and received at substantially the same time.

An RF power amplifier architecture minimizes spurious emissions by breaking the transmitted signal into narrow spectrum sub-bands, amplifying each separately, and then combining the signals for transmission purposes.

The invention is directed to a method for dynamically adapting a modulation and coding scheme for a base station transmitting a multicast-and-broadcast service to a plurality of subscribers. The method comprises periodically performing a transmission adapting process. The transmission adapting process comprises steps of setting a feedback condition according to a coverage corresponding to the multicast-and-broadcast service and sending a negative-acknowledge-based feedback query including the feedback condition, a feedback channel and feedback information corresponding to the multicast-and-broadcast service to the subscribers. According to a feedback-receiving status, the base station adapts a modulation and coding scheme for transmitting the multicast-and-broadcast service.

The invention provides a frequency spectrum sharing method for satellite communication and ground communication. A control station of the ground communication broadcasts a Beacon signal to a mobile station in a community; and a protection area and a sharing area are divided according to the coverage range of the ground communication Beacon signal. Under the condition that the effective omnidirectional radiation power of a satellite is not greater than the maximum effective omnidirectional radiation power, the satellite transmits signals to the mobile station by using the ground downlink communication spectrum and/or the satellite-specific downlink communication spectrum. When the mobile station is located in the protection area, the mobile station transmits signals to the satellite by using the satellite-specific uplink communication spectrum; when the mobile station is located in the sharing area, the mobile station transmits signals to the satellite by using the ground uplink communication frequency spectrum and/or the satellite-specific uplink communication frequency spectrum; and the satellite schedules appropriate ground uplink communication time-frequency resources and sets appropriate modulation and coding parameters for the mobile station to transmit signals to the satellite according to the interference intensity on the ground uplink communication spectrum.

Disclosed is a method and device that use a digital type modem to transmit analog signals. The modem is of the OFDM, COFDM or single-carrier type. Application to the transmission of a speech or audio signal in total security.

The invention provides a dispatching method for HSDPA (High Speed Downlink Packet Access), which comprises the following steps of: in a current subframe n, dispatching the total quantity I of the priority queues of UEs (User Equipment) according to all the requests in a subdistrict, the maximum quantity NPQ of the priority queues capable of being simultaneously dispatched in the current subframe and the maximum quantity TUE(i) of HSDPA time slots capable of being simultaneously supported by each UE by a dispatcher, determining the priority queues dispatched by the current subframe according to the principle of spectrum efficiency maximization, and allocating high-speed physical downlink shared-channel time-slot resources for each determined priority queue, wherein NPQ=min{I,TPool(n),NHSSCCH}, 1<=NPQ<=5, the TPool(n) is the quantity of the time slots in a high-speed physical downlink shared-channel time-slot resource pool in the subdistrict of the subframe n, the NHSSCCH is the quantity of high-speed shared control channels and high-speed shared information channel pairs in the subdistrict of the subframe n, and the i is the serial number of the UEs; and dispatching the priority queue by utilizing the high-speed physical downlink shared-channel time-slot resource allocated to each determined priority queue. The maximum spectrum efficiency can be obtained through the invention.

High data rate inter-satellite communications links method for a plurality of satellites comprising providing, for each satellite, an ultrafast time hopping wireless satellite communications link of an allowed bandwidth in which data is transmitted using individual packets or pulses in a sequence of such packets or pulses, causing the individual packets or pulses to be short in duration so that the individual packets are pulsed and signal energy is spread over the allowed bandwidth substantially simultaneously and instantaneously. A time hopping sequential code is used to position the packets or pulses precisely in sequence thereby providing optimum use of frequency space and also providing noninterfering transmission channels due to the orthogonality of the coding scheme used.