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602 results about "Channel Identifier" patented technology

Apparatus and method for interference cancellation in multi-antenna system

An apparatus and method for interference cancellation in a multi-antenna system are provided. A transmission apparatus includes a channel identifier, a scheduler, an interference canceller, and a transmitter. The channel identifier identifies channel information of each of a plurality of receiving ends located in a service area and neighbor cell interference information on each receiving end. The scheduler selects at least one receiving end. The interference canceller precodes transmitted signals in order to cancel interference between receiving ends located in the same cell and neighbor cell interference. The transmitter transmits the precoded transmitted signals to the selected at least one receiving end.
Owner:SAMSUNG ELECTRONICS CO LTD +1

Method And System For Advertising Bluetooth Multicast Feature

Aspects of a method and system for advertising a Bluetooth multicast feature are provided. A master device may provide a multicast service to active slave devices during a Bluetooth piconet connection. A Bluetooth multicast packet addressed to a specific slave device may be transmitted over a point-to-point connection. The multicast packet may be decoded and acknowledged by each of the slave devices on the piconet. The master device may re-transmit the multicast packet addressed to the specific slave device over the same point-to-point connection when an acknowledgment or response indicating a reception of the multicast packet from each of active slave devices may not be detected. The point-to-point connection may be associated with a L2CAP channel identified by a determined unique channel identifier (M-CID). The point-to-point connection may be secured by assigning a common authentication key shared among the slaves of the piconet.
Owner:AVAGO TECH INT SALES PTE LTD

Method and apparatus for adapting program guides to meet subscriber criteria

A system and method for adapting program guides to meet subscriber criteria, and for providing program guide information to selected subscribers based upon subscriber criteria such as the subscriber's location within a market area is disclosed. In one embodiment, the method is applied to a system broadcasting a first signal having service channels, each of which service channels is uniquely described by a service channel identifier. The application of the method provides second program guide information describing a second set of programs only to a subset of the plurality of receiver stations that comply with at least one service criteria. The method comprises the steps of segmenting the programs into at least one service group according to the service criteria, wherein the service group comprises the second set of programs, assembling the second program guide information, and transmitting a first signal having first program guide information to the receiver stations on a first service channel and second program guide information describing the second set of programs to the receiver stations on a second service channel offset from the first service channel. Each of the receiver stations intended to receive the second program guide information stores information identifying the second service channel carrying the second program guide information. This information is used by the receiver station to receive and present the second program guide material to the subscriber.
Owner:HUGHES ELECTRONICS

Method for implementing media distribution, positioning by segmented memory and stream media system thereof

The invention discloses a method for realizing media distribution and positioning by sub-chip storage and a streaming media system thereof, a central node inputs time tag information in original code streams at definite time; the code streams with the same channel identifiers and the time tag information are named and constitute sub-chip files for carrying out the sub-chip storage; the sub-chip files are distributed to various edge nodes from the central node; the node which a user belongs to is positioned to the sub-chip file during the sub-chip storage according to a signaling; and a plurality of sub-chip files is smoothly switched by using the time tag information. As the time tag is input in the direct broadcast code streams at definite time and the sub-chip files are named by combining a channel identifier, the invention realizes the uniform storage of the sub-chip files during the creation of a direct broadcast channel; additionally, the invention adopts the seamless splicing of the adjacent sub-chip files of the time tag, thereby achieving the uniform storage of time-shifted television businesses and television program on-demand businesses, greatly reducing the requirements of the whole system on storage space and storage resources and improving the reliability and the stability of the service of the streaming media system.
Owner:ZTE CORP

Multi-channel mobile ad hoc network

A mobile ad hoc network includes a plurality of wireless mobile nodes and a plurality of wireless communication links connecting the plurality of nodes together over a plurality of channels. The method includes sending a route request over each of the plurality of channels to discover routing to a destination node, and selecting a route to the destination node on at least one of the plurality of channels. The route request may be sent over each of the plurality of channels sequentially, and the route request preferably includes a source node channel identifier.
Owner:STINGRAY IP SOLUTIONS LLC

Methods and apparatus for dynamically assigning time slots in a wireless communication system

A wireless communication system having a base unit and a plurality of remote transceiver units utilizes a dynamic time slot assignment scheme for channel access. The base unit receives and processes a channel access request message from a remote transceiver unit and prepares a channel measurement request message in response. If an Mth time slot of a time frame is available, the base unit sends this message in the Mth time slot and receives a message having channel measurement data in the Mth time slot of the next time frame. On the other hand, if the Mth time slot of the time frame is already reserved, the base unit sends the message in an Nth time slot of the time frame and receives a message having the channel measurement data in the Nth time slot of the next time frame. The base unit selects, based on the channel measurement data, an appropriate channel for communication for the remote transceiver unit. Continuing with use of the dynamic slot assignment, the base unit sends a message having a channel identifier associated with the selected channel and receives an acknowledgement from the remote transceiver unit in response.
Owner:CLEARWIRE IP HLDG

Communication channel access based on channel identifier and use policy

A communication channel has an associated channel authenticator that includes a channel identifier, a use policy identifying how an owner of the communication channel indicates the communication channel is used, and a digital signature over the channel identifier and use policy. The identifier of the communication channel and the use policy can be verified by a computing device, and a check made as to whether a current security policy of the computing device is satisfied by the use policy. An access that the computing device is allowed to have to the communication channel is determined based at least in part on both whether the current security policy is satisfied by the use policy and whether the identifier of the communication channel and the use policy are verified.
Owner:MICROSOFT TECH LICENSING LLC

Secure virtual interface

A network interface for secure virtual interface data communication includes a doorbell circuit, a processor, memory, and a bridge circuit. The doorbell circuit responds to physical I/O addresses of the host that are mapped by a memory management unit by a registration process. An application program seeking to use a channel of a virtual interface must register the virtual address of host memory where data for communication is or will be stored and register the virtual address of a page of I/O addresses. Access to the doorbell functions and to the host memory via the memory management unit are therefore denied when the requesting process identifier does not successfully compare with the process identifier for the process that performed the registrations. A password may be stored in the network interface in association with a virtual interface (VI) channel identifier and stored in association with the virtual to physical map used for VI communication. The network interface may abandon a requested or implied data communication function when passwords so not successfully compare. Methods for virtual interface (VI) communication performed by an application program may include one or more of the steps of (a) establishing a VI channel where physical I/O addresses of a network controller are secured; (b) registering host memory for use with a VI channel where physical memory addresses are secured; (c) describing blocks of host memory with reference to a memory handle; and (d) accomplishing data communication of a described block of host memory via an established VI channel where the data and controls of the VI channel are secured and the data and controls of other VI channels are secured. Security is provided against both erroneous operations and operations intentionally effected by rouge processes.
Owner:MARVELL ASIA PTE LTD
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