Patent application number | Description | Published |
20090003371 | METHOD FOR TRANSMITTING PACKET AND NETWORK SYSTEM THEREOF - A method for transmitting packets and a network system thereof are provided. In the present invention, each packet entering the network system is added an assigning tag to indicate the arrival time of the packet, and at least two queues in a node of the network system are used for respectively sorting the local packets of the node and the relayed packets of the preceding node. The order of the packet for transmitting can be decided by comparing the assigning tags of the two packets positioned at first order in different queues. Therefore, a condition of First-In First-Out (FIFO) is satisfied in the network system, and the sequence for transmitting packets is arbitrated fair. | 01-01-2009 |
20090055909 | DATA TRANSMITTING METHOD WITH MULTIPLE TOKEN MECHANISM IN WIRELESS TOKEN RING PROTOCOL - A data transmission method with multiple token mechanism in wireless token ring protocol is provided. First, (a) a logical ring with M nodes is provided; (b) a k-th node is selected from the logical ring, and a token in the k-th node is generated; (c) a first message is sent to a (k+1)-th node from the k-th node with the token, and whether the (k+1)-th node responds a second message is judged, if yes, the data to be transmitted is transmitted from the k-th node, otherwise, the token of the k-th node is eliminated; (d) the token is sent to the (k+1)-th node from the k-th node after completing the transmission of the transmitted data of the k-th node, a generation token sequence is generated in a i-th node, and sent to a (i−1)-th node; and (e) the token is generated for the (i−1)-th node with the generation token sequence. | 02-26-2009 |
20100135196 | COMMUNICATION SYSTEMS AND METHODS WITH RESOURCE MANAGEMENT FOR OVERLAPPING MULTICAST AND BROADCAST SERVICE ZONES - A method for providing resource allocation in a communication network includes identifying at least two broadcast zones for receiving broadcast services in the communication network and generating a first index based on a relative relationship among the at least two broadcast zones. The first index includes information indicative of whether a first broadcast zone overlaps with at least one other broadcast zone. The method further includes generating a second index based on the relative relationship among the at least two broadcast zones; assigning at least one identifier to each of the at least two broadcast zones based on the first index and the second index; and enabling data transmissions to the at least two broadcast zones based on the assigned identifiers and using the at least one communication resource associated with the identifiers. The second index may include information indicative of a number of broadcast zones overlapped with the first broadcast zone. Each identifier may be associated with at least one communication resource, with distinct identifiers being assigned to overlapping broadcast zones of the at least two broadcast zones. | 06-03-2010 |
20100182906 | CALL ADMISSION CONTROLLER AND METHOD THEREOF AND MULTI-HOP WIRELESS BACKHAUL NETWORK SYSTEM USING THE SAME - A method for managing a call admission controller in a multi-hop wireless backhaul network is illustrated. The method provides a call access control mechanism in a multi-hop wireless backhaul network system by calculating at least one service quality parameter in the network and determining if service data transmitted from relay nodes is allowed to enter a gateway of the network according to the at least one service quality parameter. In exemplary embodiments of present invention, the service quality parameter includes a throughput, an average delay of packets, a number of remote devices, a packet loss rate, a number of the relay nodes, and an amount of service data of a specific class traffic in the network. A topology of the network may be a ring, a chain, or a tree topology, and a ripple protocol is utilized as media access control protocol in the network. | 07-22-2010 |
20100189025 | METHOD AND APPARATUS FOR RECEIVING FEEDBACK CORRESPONDING TO MULTICAST BROADCAST SERVICE - The invention is directed to a method for receiving a feedback for at least a multicast broadcast service flow transmitting to a plurality of subscriber stations. The method comprises steps of assigning a plurality of code division multiple access (CDMA) codes to a feedback corresponding to the multicast broadcast service flow and then performing an allocation process for allocating a feedback channel for the subscriber stations. Thereafter, an announcement process is performed to announce a multiple feedback condition, the CDMA codes and the feedback channel to the subscriber stations. A channel monitoring process is performed for receiving a negative-acknowledgment (NACK)-based feedback sending from one of the subscriber stations unsatisfied with the multiple feedback condition and the NACK-based feedback is in a form of one of CDMA codes corresponding to the multicast broadcast service flow and is transmitted through the feedback channel. | 07-29-2010 |
20120213099 | METHOD AND SYSTEM FOR DYNAMICALLY ADAPTING A MODULATION AND CODING SCHEME - The invention is directed to a method for dynamically adapting a modulation and coding scheme for a base station transmitting a multicast-and-broadcast service to a plurality of subscribers. The method comprises periodically performing a transmission adapting process. The transmission adapting process comprises steps of setting a feedback condition according to a coverage corresponding to the multicast-and-broadcast service and sending a negative-acknowledge-based feedback query including the feedback condition, a feedback channel and feedback information corresponding to the multicast-and-broadcast service to the subscribers. According to a feedback-receiving status, the base station adapts a modulation and coding scheme for transmitting the multicast-and-broadcast service. | 08-23-2012 |
20120213100 | METHOD FOR SELECTING TRANSMISSION ARCHITECTURE AND TRANSMISSION SYSTEM - A method for a transmission system selecting one of a plurality of transmission architectures to transmit a multicast-and-broadcast service is provided. The transmission system comprises at least one base station participating the transmission of the multicast-and-broadcast service. The method comprises recording a number of subscribers for subscribing the multicast-and-broadcast service within the coverage range of each of the base stations. According to the subscriber number and the number of the base stations, each of the transmission architectures is mapped to average cell efficiency. The average cell efficiency of each of the transmission architectures is analyzed. The transmission architecture corresponding to the maximum average cell efficiency is selected for the transmission system transmitting the multicast-and-broadcast service. | 08-23-2012 |
20140328258 | DYNAMIC RESOURCE ALLOCATION METHOD - A dynamic resource allocation method is introduced herein. The method is adapted to a base station. The method includes the following steps. A number of contending devices in the random access slot is estimated. A reference value is calculated according to the number of the contending devices and a resource allocation parameter. A number of specific resources is calculated according to the number of the contending devices, a number of acknowledgeable machine-type communication devices of the base station at the random access slot and a preamble detection probability. A number of reserved random access opportunities is determined according to a maximum number of the random access opportunities, the number of the specific resources and the reference value. The resources are allocated to the at least one machine-type communication device according to the number of the reserved random access opportunities. | 11-06-2014 |