193 results about "C dynamic memory allocation" patented technology

A method is described of automatically locating and connecting a mobile wireless communications device to a packet-switched network such as the Internet. An Internet Protocol (IP) packet from a terminal on the network, destined for receipt by the mobile device, is received at a home agent acting as a gateway or router linking the packet switched network to a second network, such as LAN, coupled to a wireless communications network. The home agent transmits an access-request message to an authentication server. The access-request message includes a destination IP address associated with the mobile device found in the IP packet. The authentication server responsively issues an access-accept message to the home agent if the mobile device is authorized to receive the IP packet. The access-accept message comprises (a) information uniquely identifying said device, such as the IMSI/ESN number for the device, and (b) information identifying a network to use to locate said device. The home agent issues a message containing the information uniquely identifying the device to a mobile node location server. The mobile node location server maintains a table mapping IP addresses for a plurality of mobile communication devices to information uniquely identifying the devices. In the event that the mobile node location server does not find an IP address for the device in the table, the device is paged via the wireless communications network. In response to the page, the mobile device dials into the wireless communications network and second network and initiates a connection to the packet switched network whereby the IP packet is transmitted to the device.

The Residential Communications Gateway (RCG) is a broadband communications device that combines all voice, data and video communications to and from a typical residence or small business for transmission over a single, or a plurality of Plain Old Telephone Service (POTS) lines separately or in conjunction with, a wireless broadband backbone. The RCG does this by employing packetized data with Voice over Internet Protocol (VoIP) technologies combined with RF communications technologies. A key consideration to the design of the RCG is that no additional or special transmission equipment must be installed at the Central Office or anywhere else in the network to enable new calling features provided by the RCG as is the case with DSL and Cable systems. By eliminating the requirement for costly infrastructure enhancements, ubiquitous high speed communications and services can be deployed to every POTS subscriber.

The present invention relates to a disk drive including a cache memory having a plurality of sequentially-ordered memory clusters for caching disk data stored in sectors (not shown) on disks of a disk assembly. The disk sectors are identified by logical block addresses (LBAs). A cache control system of the disk drive comprises a cluster control block memory, having a plurality of cluster control blocks (CCB), and a tag memory 22, having a plurality of tag records, that are embedded within the cache control system. Each CCB includes a cluster segment record with an entry for associating the CCB with a particular memory cluster and for forming variable length segments of the memory clusters without regard to the sequential order of the memory clusters. Each tag record assigns a segment to a continuous range of LBAs and defines the CCBs forming the segment. Each segment of the memory clusters is for caching data from a contiguous range of the logical block addresses. The cache control system efficiently exploits available memory clusters for responding to host commands.

It is provided a method, comprising assigning a first direct resource of a radio interface to a first vehicle-to-vehicle service based on a resource information received from a base station in a cellular mode via a cellular resource of the radio interface, wherein, in the resource information, the first direct resource and the first vehicle-to-vehicle service are indicated as being correlated, and the first vehicle-to-vehicle service is to be used or to be provided by at least a first one of one or more vehicle devices, and wherein, in the cellular mode, a communication of an apparatus performing the method with each of the one or more vehicle devices different from the apparatus is performed via the base station; performing the first vehicle-to-vehicle service via the first direct resource in a vehicle-to-vehicle mode, wherein, in the vehicle-to-vehicle mode, the communication of the apparatus with each of the one or more vehicle devices is performed directly with the respective vehicle device and does not involve the base station.

A system and method of dynamically allocating memory records to a plurality of blocks in a telecommunications switch. A data acquisition monitor is provided for monitoring one or more traffic pattern parameters associated with the call traffic through the telecommunications switch. An analyzer analyzes the traffic pattern information and maintains traffic parameter profiles in a suitable database. Also, the analyzer determines if there exists a change in demand of service based on the monitored traffic pattern parameters. A command generator provides a feedback signal to the telecommunications switch to re-assign memory records based on the changes in demand of service.

A method of dynamic resource allocations in wireless network is disclosed. The method provides that a base station in the network allocates resources to users independently of other base stations and without resource planning. Resource allocations are done based at least in part on a local optimization objective and a channel quality indicator from one or more users, and result in efficient resource reuse.

Systems and methods are disclosed for dynamically allocating power for a system having non-volatile memory. A power budgeting manager of a system can determine if the total amount of power available for the system is below a pre-determined power level (e.g., a low power state). While the system is operating in the low power state, the power budgeting manager can dynamically allocate power among various components of the system (e.g., a processor and non-volatile memory).

A system and method for dynamically producing virtual machines (VMs) across a plurality of servers in the virtual server environment is provided. A single VM request queue is produced comprising VM requests for producing the plurality of VMs. A processing thread is produced and assigned for each server and retrieves VM requests from the VM request queue and produces VMs only on the assigned server according to the retrieved VM requests. Each processing thread may be configured for retrieving VM requests and producing VMs without any programmed delays, whereby the rate at which a processing thread produces VMs on its assigned server is a function of the performance capabilities of the assigned server. This dynamic allocation of VMs based on such a “natural selection” technique may provide an appropriately balanced allocation of VMs based on the performance capabilities of each server in the virtual server environment.

A method for allocating memory that is associated with a CAN (controller area network) controller, comprises receiving a data frame comprising an identifier (ID) and data; dynamically allocating a message buffer (MB) within the memory for queuing the data frame; and generating a pointer that points to the MB, where the pointer is accessed via a static location in the memory. A corresponding host interface for the CAN controller can be implemented in IC circuitry, is configured to be coupled to a host CPU and a CAN bus interface, and includes a memory allocation unit for dynamic memory allocation and a memory access controller, coupled to the memory allocation unit and the memory, that is configured to control access to the memory to facilitate transmitting and receiving a multiplicity of data frames over a CAN bus.

A novel linked-list-based concurrent shared object implementation has been developed that provides non-blocking and linearizable access to the concurrent shared object. In an application of the underlying techniques to a deque, non-blocking completion of access operations is achieved without restricting concurrency in accessing the deque's two ends. In various realizations in accordance with the present invention, the set of values that may be pushed onto a shared object is not constrained by use of distinguishing values. In addition, an explicit reclamation embodiment facilitates use in environments or applications where automatic reclamation of storage is unavailable or impractical.

An apparatus and method for dynamically allocating memory between inbound and outbound paths of a networking protocol handler so as to optimize the ratio of a given amount of memory between the inbound and outbound buffers is presented. Dedicated but sharable buffer memory is provided for both the inbound and outbound processors of a computer network. Buffer memory is managed so as to dynamically alter what portion of memory is used to receive and store incoming data packets or to transmit outgoing data packets. Use of the present invention reduces throttling of data rate transmissions and other memory access bottlenecks associated with conventional fixed-memory network systems.

In a multiple-user network communication system such as a satellite-based system, or in cable or wireless systems, the system resources, such as bandwidth, code allocation, and or slot timing, are allocated to users based in part on their class of service. The allocation provides for immediate allocation of the requested resources to a user having a verified high class of service so long as the resources are abatable or can be made available by tapping a resource reserve. If only a portion of the requested resources are available, they are made available immediately. From time to time, the resources available to at least one class of service are allocated among the users of that class of service, either equally, equally up to the requested resources, equitably, or in some systematic manner.