Abstract:
The apparatus (101) and method for spectrum management in a multipoint communication system controls upstream channel usage for secondary stations (110) transmitting information to a primary station (101) and downstream channel usage for secondary stations (110) receiving information from a primary station (101). The preferred apparatus (101) embodiment includes a processor arrangement (120) having a master controller (121) and a plurality of processors (130), with the processor arrangement connected to a channel interface (125). The apparatus (101) and method controls channel load balancing, channel congestion, and channel assignment in a multipoint communication system, and controls upstream channels independently from downstream channels. Factors and parameters utilized in such channel control and allocation include error parameters, channel noise parameters, transmit and receive loading factors, and congestion parameters.
Abstract:
A method for providing access by secondary stations (12, 14, 16) to a shared transmission medium, maintains a list of secondary stations (12, 14, 16). A poll is transmitted by a primary station (10) to one of the secondary stations (12, 14, 16). The secondary station (12, 14, 16) waits for a poll, examines the transmission allocation, determines if there is congestion and transmits, along with the data in response to the poll, information regarding congestion. A system for providing such access includes a primary station (10) and a plurality of secondary stations (12, 14, 16). The primary station includes a polling controller (30), a receiver (32), a transmitter (34), a summer (36), a secondary station poll list database (38) and a data traffic controller (40).
Abstract:
An apparatus and method to implement a hybrid contention and polling protocol for a communications or computer network is disclosed. Various apparatus and method embodiments of the invention employ specific polls (116) from a primary station for polling identified secondary stations of the network which may be in an active state, general polls (124, 304) to any of a plurality of secondary stations of the network which may be in an unresponsive state to initiate contention access to the network, and general polls for collision resolution (318) in the event that a plurality of secondary stations may simultaneously contend for network access. Various embodiments may also include frequency channel allocation for transmission and reception of data and other information within the network. The various procedures and apparatus disclosed may also be used to apply various polling parameters to optimize network performance.
Abstract:
Apparatus and method to implement a hybrid contention and polling protocol for a communications or computer network. Various embodiments employ primary station polls (115, 120) to identify secondary stations in an active state; limited contention polls (126) to identify individual secondary stations in an idle state or identify a subset of secondary stations in an idle state to initiate limited contention access to the network; limited contention polls for collision resolution (603) when a plurality of secondary stations in an idle state have simultaneously contended for network access; general polls (122) to secondary stations in an unresponsive state to initiate contention access to the network; and general polls for collision resolution (411) when a plurality of secondary stations simultaneously contend for network access. Various embodiments may include frequency channel allocation for transmission and reception of data within the network. The various procedures and apparatus disclosed may also apply various polling parameters to optimize network performance.
Abstract:
An apparatus, method, system (100) and system method provide for distributed internetwork routing of information in a communication system (100). The communication system (100) is characterized by a topology having a primary node (101) connected to a first network (105), such as the internet, and connected via an intermediate network (114, 115, 116) to a multiplicity of intermediate nodes (110) which are further connected via a secondary network (322) to a plurality of terminals (304) such as personal computers. The apparatus, method, system and system method provide for routing of information between the primary node (101) and terminals (304) independently of and transparently to any internetwork address of a secondary node (110). The apparatus, method, system and system method conserve internetwork addresses by utilizing internetwork addresses only for a primary node (101) and for terminals (304).
Abstract:
The apparatus (101) and method for spectrum management in a multipoint communication system controls upstream channel usage for secondary stations (110) transmitting information to a primary station (101) and downstream channel usage for secondary stations (110) receiving information from a primary station (101). The preferred apparatus (101) embodiment includes a processor arrangement (120) having a master controller (121) and a plurality of processors (130), with the processor arrangement connected to a channel interface (125). The apparatus (101) and method controls channel load balancing, channel congestion, and channel assignment in a multipoint communication system, and controls upstream channels independently from downstream channels. Factors and parameters utilized in such channel control and allocation include error parameters, channel noise parameters, transmit and receive loading factors, and congestion parameters.
Abstract:
Apparatus and method to implement a hybrid contention and polling protocol for a communications or computer network. Various embodiments employ primary station polls (115, 120) to identify secondary stations in an active state; limited contention polls (126) to identify individual secondary stations in an idle state or identify a subset of secondary stations in an idle state to initiate limited contention access to the network; limited contention polls for collision resolution (603) when a plurality of secondary stations in an idle state have simultaneously contended for network access; general polls (122) to secondary stations in an unresponsive state to initiate contention access to the network; and general polls for collision resolution (411) when a plurality of secondary stations simultaneously contend for network access. Various embodiments may include frequency channel allocation for transmission and reception of data within the network. The various procedures and apparatus disclosed may also apply various polling parameters to optimize network performance.
Abstract:
A method for providing access by secondary stations (12, 14, 16) to a shared transmission medium, maintains a list of secondary stations (12, 14, 16). A poll is transmitted by a primary station (10) to one of the secondary stations (12, 14, 16). The secondary station (12, 14, 16) waits for a poll, examines the transmission allocation, determines if there is congestion and transmits, along with the data in response to the poll, information regarding congestion. A system for providing such access includes a primary station (10) and a plurality of secondary stations (12, 14, 16). The primary station includes a polling controller (30), a receiver (32), a transmitter (34), a summer (36), a secondary station poll list database (38) and a data traffic controller (40).
Abstract:
Frequency spectrum management provides for dynamic spectrum usage adjustment among applications on a shared medium. Dynamic resource management methods are applied to the problem of managing spectrum and matching application specific requirements to real-time spectrum characteristics so that more optimal use of the available spectrum may be made. At least a first spectrum agent is assigned to each of the plurality of different applications (104, 106, 108, 110, 112 and 114), for managing channels allocated to the application, and a spectrum manager (102) allocates frequency channel(s) to the plurality of different applications (104, 106, 108, 110, 112 and 114) based on the following at least one of parameters of a frequency channel required to implement the application and predetermined requirements based on time of day demand changes for the application.
Abstract:
An apparatus, method, system (100) and system method provide for distributed internetwork routing of information in a communication system (100). The communication system (100) is characterized by a topology having a primary node (101) connected to a first network (105), such as the internet, and connected via an intermediate network (114, 115, 116) to a multiplicity of secondary nodes (110) which are further connected via a secondary network (322) to a plurality of terminals (304) such as personal computers. The apparatus, method, system and system method provide for routing of information between the primary node (101) and terminals (304) independently of and transparently to any internetwork address of a secondary node (110). The apparatus, method, system and system method conserve internetwork addresses by utilizing internetwork addresses only for a primary node (101) and for terminals (304).