Systems, methods and techniques are presented for discovering optimal solutions to satisfy communication traffic demands to a NGSO and GSO satellite constellations used for telecommunication. When multiple ground demands (mobile and stationary) are present, a satellite constellation requires an assignment of satellite resources to optimally match the ground demands. The systems, methods and techniques presented can utilize an optimization structure to maximize the objective function, using linear programming in combination with simulation and predictive features. The techniques presented determine optimal or quasi-optimal allocation of scarce and highly constrained satellite resources in an efficient manner. These techniques take into account maximizing capacity while protecting other geostationary and non-geostationary networks.

Satellite communications systems, methods, and related devices are described. In one embodiment, a satellite communications system is configured to dynamically allocate bandwidth among different downlink beams. The satellite may receive and compile traffic measurements and terminal parameters. The satellite may be configured with different downlink beam coverage areas, and may dynamically allocate downlink bandwidth and particular frequency channels to different beam coverage areas based on the measurements and parameters. The satellite may also assign frequency channels and time slots based on such measurements and parameters.

Multibeam coverage for a high altitude platform (“HAP”) is disclosed. An example method to provision a HAP includes determining an altitude range at which the HAP will operate and determining a minimum elevation angle from the ground to the HAP. The method also includes determining a coverage area of the HAP based on the altitude range and the minimum elevation angle and partitioning the coverage area into substantially equal-sized cells. The method further includes assigning an antenna to each of the cells and determining a beamwidth and an elevation angle for each antenna to provide communication coverage to the corresponding cell. The method moreover includes determining an aperture for each of the antennas based on the beamwidth and the elevation angle to provide the substantially equal-sized cells.

Communicating transmission power information that specifies a transmission power used by a reference point for use in estimating a position of a mobile device. Systems and methods measure an amount of power present in a signal received from the reference point, receive an identifier of the reference point and transmission power information that specifies the transmission power used by the reference point, transmit the identifier of the reference point to a location server, and also transmit the transmission power information or an estimate of a distance separating the mobile device and the reference point to the location server.

A method of dynamic resource allocation for at least one satellite access network associated with at least one telecommunications satellite comprises a frequency-flexible payload, the at least one satellite access network comprises a plurality of resource allocation controllers. The method comprises the acquisition of the bandwidth desired by each resource allocation controller, reconfiguration of the payload of the at least one satellite considering the bandwidth desired by each resource allocation controller and the frequency resources available on board each satellite, and a step of frequency allocation to the various resource allocation controllers, considering the bandwidth desired by each resource allocation controller and the frequency resources available on board each satellite.

A method for allocating resource and accessing in open wireless channels includes: covering multiple types of user terminal stations in open wireless channels; making dynamic adaptive matching according to comprehensive change factors of a transmitting end and a receiving end in each communication process. The factors of the transmitting end mean that a type and transmitting capacity of a transmitting station are changed, a current state of the wireless channel between the transmitting station and a relay node is changed, a working state of a receiving end of the relay node is changed, and user services to be transmitted are changed; the factors of the receiving end mean that a type and receiving capacity of a receiving station are changed, a current state of the channel from the relay node to the receiving station is changed, and a working state of a transmitting end of the relay node is changed.

A method and apparatus for operating a satellite access network (SAN) of a satellite communication system to schedule communications with a user terminal. In some aspects, the SAN may provision a communication frame, for the user terminal, into a number of forward-link (FL) subframes and a different number of reverse-link (RL) subframes. The SAN then transmits the FL subframes to the user terminal via a forward link of the satellite communication system, and subsequently receives the RL subframes from the user terminal via a reverse link of the satellite communication system.

Methods and apparatuses are disclosed for a user terminal (UT) to transmit data to a network controller via a satellite in a satellite system. The UT may begin transmitting, during a time period, a first portion of the data using contention-based resources of the satellite system prior to receiving a grant of scheduled return link resources of the satellite system. The UT may also transmit, on the contention-based resources, a buffer status report (BSR) during the time period. The UT may terminate data transmissions on the contention-based resources after an expiration of the time period or upon receiving the grant of scheduled return link resources. After receiving the grant, the UT may transmit a second portion of the data on the scheduled return link resources.

Disclosed are improved systems and methods and techniques for satellite-based Internet access and transport that provides a broader view of satellite-based access facilities including full demand and supply in any locale, at any scale, independent of SNP/ACP coverage or Beam mobility. Accordingly, methods and systems according to aspects of the present disclosure, advantageously dimension and deploy the IP services (demand) against a predictable and geo-spatially-computable supply model—so that no (i.e. AR) is oversubscribed beyond a desired threshold in any of its CAs (supply) area.

Methods and systems are described which provide solutions for determining how to allocate terminals to slots in order to maximize communication system performance in the case where there is no feedback channel between a multiuser satellite receiver and terminals within the field of view. Terminals operate independently of each other and choose transmission slots based upon the geographic position of the terminal. Terminals can be programmed with a slot selector to choose slots according to some deterministic or non deterministic function of the current position. A slot plan database may be used to assist in efficient slot selection. Regular and irregular grid based allocation methods are described, that reduce the likelihood that too many terminals transmit using the same slot within the field of view. Satellite induced Doppler effects can be utilized be further increase slot re-use and to improve allocation of slots so that the receiver sees an approximately uniform distribution of frequencies over the frequency band to improve system throughput. The approaches described herein greatly reduce or eliminate the probability of failure at the receiver, which has numerous implementation advantages such as reduced cost, complexity, and power consumption.