41 results about "Packet combining" patented technology

A hybrid ARQ scheme is used incremental data packet combining. In an example embodiment, the hybrid ARQ scheme with incremental data packet combining employs three feedback signaling commands: ACK, NACK, and LOST. Using these three feedback commands, the hybrid ARQ scheme with incremental data packet combining provides both robustness and good performance. This scheme is particularly advantageous in communication systems with unreliable communication channels, e.g., a fading radio channel, where forward error correction (FEC) codes are used and some of the code symbols are more important than other code symbols. Benefits include increased throughput and decreased delay of the packet data communication.

An apparatus and method is disclosed for reducing the computational overhead incurred by a host processor during packet processing and improving network performance by adding additional functionality to a Network Interface Controller (NIC). Under certain circumstances the NIC coalesces multiple receive packets into a single coalesced packet stored within a coalesce buffer in host memory. The coalesced packet includes an Ethernet header, a coalesced Internet Protocol (IP) header, a coalesced Transmission Control Protocol (TCP) header, and a coalesced TCP payload containing the TCP payloads of the multiple receive packets. By coalescing received packets into fewer larger coalesced packets within the host memory, the host software needed to process a receive packet will be invoked less often, meaning that less processor overhead is incurred in the host.

A method is provided to allow a mobile station to communicate with two different cells during a handoff between the cells. During the handoff, the mobile station may controllably combine information received from both of the cells with which it is communicating.

A dynamic packet consolidation algorithm for a wireless transmission regime. At least first and second packets of a plurality of packets are sampled. The respective throughput times of each first and second packet are then calculated. The first and second packets are consolidated into a third packet if the sum of the corresponding throughput times exceeds a predetermined limit.

Multiple data transfer requests can be merged and transmitted as a single packet on a packetized bus such as a PCI Express (PCI-E) bus. In one embodiment, requests are combined if they are directed to contiguous address ranges in the same target device. An opportunistic merging procedure is advantageously used that merges a first request with a later request if the first request and the later request are mergeable and are received within a holdoff period that is dynamically determined based on a level of bus activity; otherwise, requests can be transmitted without merging.

It is intended to provide a transmission device, a reception device and a communication system capable of improving transmission characteristics by performing packet combining by HARQ in MU-MIMO transmission using non-linear precoding.In a case of receiving NAK from any of terminal devices (400), a base station device (100) retransmits a packet, in which an error occurs, addressed to this terminal device. The base station device (100) transmits the data to be retransmitted together with other transmission data addressed to a different terminal device or addressed to the own terminal device by spatial multiplexing transmission with MU-MIMO. At this time, for the retransmission data, precoding is performed such that a perturbation term same as a perturbation term which has been added to this data by non-linear precoding at the time of initial transmission is added.

A method is provided to allow a mobile station to communicate with two different cells during a handoff between the cells. During the handoff, the mobile station may controllably combine information received from both of the cells with which it is communicating.

The invention provides a mixing automatic re-transfer request method based on the multi-antenna input and output channel decomposition, which comprises a receiving end used to a do geometric average decomposition to the channel matrix to obtain the pre-code matrix and the adjusting zero weight generating matrix; it feedbacks the pre-code matrix to the sending end and uses the adjusting zero weight generating matrix to generate the least mean square error adjusting zero weight vector; it dose forward error correction coding to the sending data package, adds the cyclic redundancy check and uses pre-coding matrix to pre-code the sending data package at the sending end; it uses each sub channel receiving signal and the corresponding adjusting zero weight vector and sub channel gain to obtain each sub channel receiving signal and then dose forward error correction decoding, it uses cyclic redundancy check to check the sectionalization quality at the receiving end; if the data sectionalization has error, retransfer it and stores the error sectionalization at the receiving end, groups the error retransfer data and decodes after amalgamating it with the buffer storage group.

A system and method for optimizing the transmission of a plurality of data packets, each packet having a next-hop address, across a data network are provided. The method includes receiving the data packets at the network traffic device, buffering the data packets, identifying a selected data packet, identifying a second data packet with the same next-hop address as the selected data packet, consolidating the selected data packet with the second data packet to form a consolidated packet, and transmitting the consolidated data packet. The system and method of the present invention are particularly applicable to the optimization of voice data traffic.

The invention relates to the field of communication, wherein the embodiment of the invention discloses a ships fast self-networking method based on GPS information. The method comprises the followingsteps: an address distributing mode in the self-networking of the sea ships; the division of geographic regions of IP communication according to GPS address information; the selection of address agentships; a ships handover switching work flow based on the GPS information; the packet combining and the cracking process of the ships regions based on the GPS information; and the self-networking optimization of sea / air uniform. The method manages the ships address with different layers and simplifies operation by using GPS address location information and allocating address management subdistricts. Simultaneously, the method can support the dynamic regulation of topology such as the combining and the cracking of the network, etc. By using different address segments of each subdistrict and executing the unified management by the address agent in the subdistricts, the method guarantees the uniqueness of address allocation. When nodes handover switch after cracking and combining the network,each subdistrict uses different address segment, therefore, a handover switching mechanism automatically solves the problems that the address is possibly leaked and repeated in the process of cracking and combining the network.

Overhead is significant when a timestamp according to a reference time is inserted. In view of this, there is provided an LSI which includes: a first time information conversion unit which converts, into time information of a reference time, time information from a first trace data source; a second time information conversion unit which converts, into time information of a reference time, time information from a second trace data source; and a packet merging unit.

The embodiment of the invention discloses a noise reduction method and system for a medium-voltage carrier signal through a wavelet packet combining a singular value, and the method comprises the steps: obtaining the medium-voltage carrier signal of a power line in a medium-voltage power distribution network; carrying out the sampling of the medium-voltage carrier signal through an isolation channel digital storage oscilloscope, and obtaining N sampling points; selecting a wavelet function and a decomposition layer number, which are corresponding to the medium-voltage carrier signal, carrying out the wavelet packet decomposition of the medium-voltage carrier signal corresponding to N sampling points, and sequentially decomposing the medium-voltage carrier signal into multi-band medium-voltage carrier signals from the low to the high according to the band; keeping the wavelet packet coefficient corresponding to a low-frequency band in the decomposed medium-voltage carrier signals, and carrying out the noise reduction of the wavelet packet coefficients corresponding to a preset number of high-frequency bands; reconstructing the decomposed medium-voltage carrier signals through the wavelet packets, and obtaining the medium-voltage carrier signals after noise reduction. According to the technical scheme of the invention, the method can obtain the smooth noise-reduction medium-voltage carrier signals.

Disclosed herein is a packet transmission method wherein received packets are sorted into prioritized QoS packets and general packets other than the prioritized QoS packets, the sorted prioritized QoS packets are accumulated, the accumulated QoS packets are capsulated and then transmitted as a capsulated packet, and the capsulated packet is transmitted in matching with the period of a CODEC. In the preferred embodiment, there is provided a wireless LAN system comprising a base station and at least one wireless LAN terminal connected to said base station via a wireless LAN; and a packet transmission system for transmitting a packet between said base station and said at least one wireless LAN terminal via the wireless LAN, the packet transmission system. In the packet transmission system, a packet sorter sorts received packet into prioritized packets and packets other than the prioritized packets. A FIFO queue buffer (QoS queue) accumulates the sorted prioritized packets. A packet combiner capsulates the accumulated packets in the QoS queue. A wireless packet transmitter transmits the capsulated packet between the base station and the at least one wireless LAN.

An apparatus and method is disclosed for reducing the computational overhead incurred by a host processor during packet processing and improving network performance by adding additional functionality to a Network Interface Controller (NIC). Under certain circumstances the NIC coalesces multiple receive packets into a single coalesced packet stored within a coalesce buffer in host memory. The coalesced packet includes an Ethernet header, a coalesced Internet Protocol (IP) header, a coalesced Transmission Control Protocol (TCP) header, and a coalesced TCP payload containing the TCP payloads of the multiple receive packets. By coalescing received packets into fewer larger coalesced packets within the host memory, the host software needed to process a receive packet will be invoked less often, meaning that less processor overhead is incurred in the host.

The invention discloses a low-power consumption wireless communication transmission method. The method comprises a first step of data definition in which the data wirelessly transmitted at each time are defined as a frame, a second step of a transmitting side in which the transmitting side and a receiving side negotiate the respective compression and data transmitting and receiving capabilities, data are acquired and are subjected to compression and unpacking, and later, the data frame obtained after processing is transmitted to the receiving side, and a third step of a receiving side in whichthe receiving side receives the data frame from the transmitting side, the data frame is then subjected to packet combining and decompressing, complete data are acquired, and confirmation informationis transmitted to the transmitting side. Reliable data transmission is ensured, the transmitted data amount is effectively reduced, the data transmitting time is shortened, and the transmitting efficiency is improved.

A method is proposed to enable a UE (user equipment) performing codeword level interference cancellation (CW-IC) to know whether an interfering transport block (TB) is a new transmission or retransmission. With this knowledge, the UE knows whether soft channel bits stored in a soft buffer are to be discarded or combined with the soft channel bits newly obtained.

Embodiments of systems and methods for efficient broadcasting via random linear packet combining are described. A method for random linear packet combining includes receiving a plurality of data packets from a data source. Additionally, the method may include dividing the plurality of data packets into a plurality of data blocks, and multiplying bits associated with the plurality of data blocks by a set of coefficients to generate a plurality of product values. The method may also include generating an encoded data packet having a plurality of encoded data blocks, wherein generating the encoded data packet comprises linearly combining the plurality of product values for respective data blocks of each of the plurality of data packets into corresponding encoded data blocks of the encoded data packet. Because each encoded data packet includes information about a complete set of data packets, rather than just a subset, less broadcast redundancy may be required.

The present invention combines multi-user detection with packet combining. In multi-user detection, the receiver jointly demodulates user's data by exploiting the structure of multi-user interference, the packet combining is an enhancement of standard automatic repeat request protocol, in which the erroneous packet are not discarded but preserved and combined with retransmitted ones to improve subsequent decisions. One embodiment of the two-stage detector uses a first stage in which the packets are combined and then decoded, in order to improve tentative decisions for interference cancellation. The decoder output is then used in the second stage to cancel the interference, and then the combining is performed once again, before the final decoding. For the two-stage detection we consider two decoding schemes in the first stage. One is the soft input / soft output maximum a posteriori probability decoding of the combined packets, then a soft interference cancellation is performed in the second stage. In the second embodiment, we use the hard decision Viterbi / Turbo decoding, and a hard interference cancellation in the second stage. In the simulation we include power control, quantization, and timing, phase and amplitude estimation. The results indicate that the proposed scheme with packet combining and multi-user detection employed jointly significantly improve performance in the high channel load, increasing the robustness of the system.

The invention discloses a network packet sending machine based on ZYNQ. The network packet sending machine comprises a configuration circuit and a packet combining circuit, and the configuration circuit is composed of the protocol type configuration, the parameter configuration, the data link layer configuration, the network layer configuration, the transmission layer configuration and the data configuration; the packaging circuit is composed of a configuration receiving module, an MAC processing module, an ARP / RARP processing module, an IP processing module, a transmission layer processing module, an FCS verification module and an Ethernet interface module. According to the present invention, in various network testing and debugging environments, a user can flexibly customize the networkdata packets with various parameters, such as various protocol types, throughput rates, inter-frame intervals, etc. According to the hardware based on ZYNQ, the throughput rate up to 10 Gbps, the microsecond-level delay and the humanized WEB interface configuration can be conveniently achieved.

The invention relates to a packet combining method of the slave station active communication in star-shaped half-duplex link, including the following steps: 1) a main station emits the token packets at definite time to be polled in a plurality of slave stations; 2) the slave stations combine the command packets and token response packets which are waited to be sent after receiving the token packets of the main station; 3) the main station reduces and decomposes the received combined packets to the token response packets and the command packets, as well as sends the command response packets to the corresponding slave stations for the response of the command packets. Compared with the prior art, the invention has the following advantages that: the invention combines the command and token response packets of the slave stations to the combined packets to send to the main station by making use of the time slot of the token response packets, so as to solve the problem of active communication between the slave stations and the main station without the influence of the collection frequency of the state parameters of the slave stations.

It is intended to provide a transmission device, a reception device and a communication system capable of improving transmission characteristics by performing packet combining by HARQ in MU-MIMO transmission using non-linear precoding.In a case of receiving NAK from any of terminal devices (400), a base station device (100) retransmits a packet, in which an error occurs, addressed to this terminal device. The base station device (100) transmits the data to be retransmitted together with other transmission data addressed to a different terminal device or addressed to the own terminal device by spatial multiplexing transmission with MU-MIMO. At this time, for the retransmission data, precoding is performed such that a perturbation term same as a perturbation term which has been added to this data by non-linear precoding at the time of initial transmission is added.

The invention discloses an anonymous method of preventing a label neighbor attack in multiple times of dynamic network publishing. The method is characterized by grouping social network data input at each moment; during each grouping, dividing nodes with a maximum neighbor label similarity into one group till that the nodes with sensitive labels are distributed into appropriate groups; finally, carrying out hidden label processing on individuals with non-sensitive labels in the groups in an anonymous social network; and after the grouping is completed, merging the generated groups into a grouped table, simultaneously determining continuous publishing times, and in continuous w times of publishing, ensuring to carry out anonymous processing on 1-neighbor graphs of the nodes of the groups, when the times exceed the w, removing the groups of t-w moments in the table. Usability and effectiveness of data are guaranteed.

An edge computing real-time channel allocation and task unloading method based on task queue perception is characterized in that a base station channel allocation and user task unloading problem based on task queue perception is converted into a single time slot optimization model according to a Lyapunov optimization framework, users are divided and combined according to a game theory, and a cooperative game is carried out; and forming a combination set with stable convergence, and finally obtaining a channel allocation and task unloading strategy of each time slot.

Methods, apparatus, and systems for implementing a semi-flexible Receive Segment Coalescing (RSC) control path. Logic for evaluating packet coalescing open flow criteria and close flow criteria are implemented in hardware on a network device that receives packets from one or more networks. packet coalescing open profiles and packet coalescing close profiles are also stored on the network device, wherein each packet coalescing open profile defines a set of packet coalescing open flow criteria to be applied for that packet coalescing open profile and each packet coalescing close profile defines a set of packet coalescing close flow criteria to be applied for that packet coalescing open profile. packet coalescing open flow and close flow profiles are then assigned to packet coalescing-enabled receive queues on the network device and corresponding open and flow criteria are used to perform packet coalescing-related processing of packets in the receive queues. The scheme supports hardware-based packet coalescing packet processing while providing flexibility in meeting the requirements of different operating systems and future usage models on a single network device.

Communication systems, including, for example, cell-based mobile communication systems, multiple satellite communication systems, or multibeam satellite systems, require reliable handoff methods between cell-to-cell, beam-to-beam, or satellite-to-satellite respectively. Recent measurement of a CDMA cellular system indicates that the system is in handoff about 30 % to 50 % of an average call period. Therefore, system reliability during handoff is one of the major system performance parameters and eventually becomes a factor in the overall system capacity. The present invention advantageously relates to novel and improved techniques for handoff in cellular communications, multibeam and multisatellite systems. The present invention combines the soft handoff mechanism with a code diversity combining technique(i.e., combining signals from multiple sources), a packet combining technique(i.e., combining multiple signals), and an iterative decoding algorithm (e.g., Turbo Coding (502)).

The invention discloses a blind frequency offset estimation method based on maximum likelihood two-dimension search. The method comprises the steps that a received signal matrix is obtained according to signal information received by a communication receiver; a frequency offset search list and a code parameter search list are initialized; frequency offset compensation signal matrixes are obtained according to a frequency offset search list compensation received signal matrix; according to the code parameter search list, the frequency offset-code parameter maximum likelihood function value of each frequency offset compensation signal matrix is calculated; the frequency offset corresponding to the maximum value in the frequency offset-code parameter maximum likelihood function values is judged. According to the blind frequency offset estimation method based on maximum likelihood two-dimension search, due to the fact that group merging processing is conducted on received signals, the result of the frequency offset-code parameter maximum likelihood function is independent of the data starting position, good estimation performance is provided for non-integrality data, and therefore the frequency offset estimation method has certain tolerance for synchronous errors.

The invention discloses a double-aluminum-packet combining device for cigarette packets. The device comprises a rack; a support which is vertically arranged on the rack; a die box wheel disc which isrotationally sleeved on the support; a box body which is fixedly arranged at the upper end of the support; a transition die box which is arranged on the side wall of the box body; a first electric push rod which is arranged on the box body, is horizontally arranged and can extend to the transition mold box; an L-shaped push plate arranged on the push rod end portion of the first electric push rod; a second electric push rod which is arranged on the rack, extends upwards and is located under the transition die box; a follower plate which is arranged at the push rod end of the second electric push rod; a pressing plate which is located over the transition die box; and a driving device which is connected with the rack and used for driving the pressing plate to ascend and descend; the die boxwheel disc comprises a disc body and a plurality of box bodies which are annularly and evenly distributed on the outer edge of the disc body. The transition die box is located over one box body. Thebox body comprises a bottom plate and a baffle. The double-aluminum-packet combining device for the cigarette packets is high in combining efficiency.

A method and device for combining packets is disclosed. In various embodiments, a plurality of packets that are compliant with a particular protocol are combined into a single packet of the same protocol. The single packet also preserves identification information for each of the combined packets within the single packet. The identification information can be used to partition and / or route the combined packets to their respective destinations.

The invention relates to a method for merging remote signaling information of a substation telecontrol system. A merging signal management unit is created to store the merging signal points after logic operations; a sub-signal configuration table is set, and group numbers are set; binding signals Merge the logic operation rules, search the group number configuration information of each sub-signal in the configuration table, and complete the grouping of the sub-signals; the drive of the merged signal includes two modes: state-driven and event-driven, state-driven timing scan state for calculation, and event-driven Read SOE in real time for calculation. The invention satisfies the comprehensive monitoring requirements of the dispatching master station system for the operation of substation equipment, improves the flexibility of signal combination processing, solves the problem that a single sub-signal cannot participate in the logic operation of multiple combined signals; and realizes the combined signal and The association between the sub-signals involved in the combined calculation realizes the signal recursive operation and meets the different logic requirements for signal combination.

The invention relates to a message processing method for an OpenFlow switch in wireless communication, and belongs to the technical field of wireless communication. The OpenFlow switch receives packets in wireless communication, analyzes the packet headers of the packets, and obtains a packet P; the packet P matches the flow table in the switch, if there is a trigger group in the flow entry of the flow table that matches the packet P table instructions, add a message copying unit at the back of the flow table, and add a message merging unit at the back of the last flow table that matches successfully, the message copying unit copies the message P, and the message P executes the data Pipeline processing, to get the message P2 with the action set to be processed; message P1 is processed in the group table, and the message P'1 is obtained after executing all the actions in the group table according to the priority of the group table items; The unit combines the messages P'1 and P2 to obtain a message P3, executes the action set in the message P3 and completes message processing, and obtains a message for sending. The method improves the packet processing speed and efficiency of the OpenFlow switch.