50results about How to "Reduce scheduling delay" patented technology

A method and apparatus for scheduling the transfer of data bursts in a network comprising electronic edge nodes interconnected by bufferless core nodes are disclosed. Each edge node comprises a source node and a sink node, and each core node comprises several bufferless space switches operated in parallel. Each source node is connected to at least one core node by an upstream link that includes multiple upstream channels. Each core node is connected to at least one sink node by a downstream link that includes multiple downstream channels. Any of the space switches can have either an electronic fabric or a photonic fabric. Each space switch has a master controller, and one of the master controllers in a core node is designed to function as a core-node controller in addition to its function as a master controller. Each master controller has a burst scheduler operable to compute a schedule for the transfer of data bursts, received from source nodes, to destination sink nodes. In one mode of operation, each source node determines the bitrate requirements for paths to each sink node and sends bitrate-allocation requests to a core-node controller. A core-node controller receives requests for bitrate allocations from source nodes and assigns each request to one of the master controllers of the core node. Each master controller then computes burst-transfer permits and sends the permits to corresponding edge nodes. Each permit specifies a burst size, a destination sink node, the time at which the burst should be transmitted from its source node, and the upstream channel to be used. It is emphasized that in this mode of operation, the source node communicates information on burst streams not on individual bursts. In another mode of operation, each source node determines a descriptor of each unscheduled waiting data bursts and communicates the burst descriptors of all unscheduled bursts to a controller of a core node. The core-node controller then directs each burst descriptor to one of the master controllers of the core node which then computes a schedule for burst transfer and sends the schedule to corresponding edge node. The schedule indicates the upstream channel to be used for each burst and the time at which each burst, already waiting at the source node, should be transmitted to the core node. The scalability of the network is determined, in part, by the processing capacity of the burst scheduler and techniques for circumventing this limitation are described in this disclosure.

Disclosed in the present invention is a radio resource scheduling method, including: a network element in an access network acquiring uplink (UL) data feature information corresponding to a service supported by a terminal; the terminal waiting for an UL resource scheduling signaling of the network element in the access network when judging that an initiated service is regular or predictable; the network element in the access network sending the UL resource scheduling signaling to the terminal to carry out UL resource scheduling on the terminal according to the UL data feature information corresponding to the service initiated by the terminal when the service initiated by the terminal is regular or predictable. Also disclosed in the present invention are a network element in an access network element and a terminal. The present invention enables the UL resource scheduling to save more control signaling, improving the radio spectrum efficiency and system throughput.

The invention discloses a method and a device for allocating resources in a space division multiple access system. The method comprises the steps of determining the scheduling priority level of a user; determining the affiliation space of the user; and allocating physical resources for the user according to the scheduling priority level and the affiliation space of the user. The invention has the advantages that the applicability is wide; the method and the device can be used for any space division multiple system and any duplexing system; the problem of the frequency domain resource allocation of the space division multiple access system in LTE (Long Term Evolution) or LTE-A can be effectively solved; the resources are multiplexed to the maximum extent, and the utilization rate of the resources is higher; a part of the scheduling time delay can be reduced; the success rate of the resource allocation is enhanced; and the method and the device can be widely applied to the resource allocation of a service channel and a control channel.