71 results about "Protocol Error" patented technology

A method for resetting a MAC-hs (Medium Access Control-high speed) layer entity in a communication system using HSDPA (High Speed Downlink Packet Access). When an RLC (Radio Link Control) layer entity is reset due to occurrence a protocol error, the system resets both a MAC-hs layer entity of the RLC layer entity and its counterpart RLC, thus preventing unnecessary data transmission.

In a computer system having a bus architecture, a system and process for isolating a device from a bus without interrupting system operation is described, the system including bus interface logic monitoring and reporting activity on the bus, isolation control logic receiving error signals from error detectors, and isolation switches through which devices are interconnected to the bus, the isolation switches allowing for the isolation of the devices from the bus. The isolation control logic determines the devices to be isolated responsive to the reported error and, in turn, transmits an isolation switch control signal to the isolation switch(es) associated with the identified device(s) to isolate those device(s) from the bus. In some embodiments, errors are reported by system software, input / output virtual address error detectors for systems using virtual memory addressing, protocol error detectors, and sensors sensing the physical removal of a bus-connected device from its bus interface slot.

A system and method for automatically diagnosing protocol errors from packet traces is provided. The system and method performs an automatic trace analysis on a packet trace to generate an analysis that is then fed into a diagnosis / resolution module. The diagnosis / resolution compares the trace analysis with the database of known problems to identify the protocol error and a suggested solution. The suggested solution then may be implemented, either by a user or by the DR module, to correct the protocol error.

A system and method for automatically diagnosing protocol errors from packet traces is provided. The system and method performs an automatic trace analysis on a packet trace to generate an analysis that is then fed into a diagnosis / resolution module. The diagnosis / resolution compares the trace analysis with the database of known problems to identify the protocol error and a suggested solution. The suggested solution then may be implemented, either by a user or by the DR module, to correct the protocol error.

Within a hard handoff procedure of a mobile terminal from a first radio sector to a second radio sector, a handoff manager requests the allocation of network resources associated with the second radio sector for the mobile terminal. If the second radio sector does not have sufficient network resources to support the mobile terminal, the handoff manager instructs the mobile terminal to switch into a dormant mode. By doing this, the handoff manager can delay the disconnection of the packet data session until there is sufficient network resources or until an internal packet data protocol error occurs due to a request timing out. In the case that sufficient resources become available, the handoff manager instructs the mobile terminal to return to a connected mode. One advantage of this procedure is the reduced need to re-establish a data packet session in cases that there is a temporary lack of sufficient network resources during a hard handoff.

In a method for controlling data traffic in a wireless or other communication network, one or more hardware / software agents are deployed to interface with one or more network entities such as routers, switches, backhaul transmission lines, and wireless base stations. The agents monitor the L1 (physical) and L2 (data link) layers of the network for the presence of indicators associated with network failover operations, such as DS1 alarms and protocol errors, respectively. Based on detected indicators across all monitored network entities, the agents determine if a failover operation has occurred. If so, data congestion associated with the failover operation is controlled according to a failover congestion monitoring and recovery mode (e.g., a data source backoff model), to reduce instances of dropped calls that would otherwise occur if the failover congestion were handled according to a general purpose congestion monitoring and recovery mode of the network.

Provided is a method of constituting a highly reliable control network in an IP-based network environment and, more particularly, a protocol technology for automatic control channel constitution and protection. The method includes functions of protection group (PG)-1 / 3 control channel identification, detour control channel identification, an automatic switchover, a forced switchover, a control channel unavailability notice, a protection / switchover properties information inquiry, an Hello, a protocol error notice, and re-transmission. This invention provides a protection mechanism of control channels without additional overhead and with higher level of resilience capability to improve shortcomings of the LMP and MPLS based schemes.

A method for radio link control error handling procedure in a wireless communications system including a first communication device and a second communication device includes a first radio link control entity of the first communication device only resetting a transmitting side of the first radio link control entity when a protocol error of the transmitting side is detected.

A method for resetting a MAC-hs (Medium Access Control-high speed) layer entity in a communication system using HSDPA (High Speed Downlink Packet Access). When an RLC (Radio Link Control) layer entity is reset due to occurrence a protocol error, the system resets both a MAC-hs layer entity of the RLC layer entity and its counterpart RLC, thus preventing unnecessary data transmission.

A method for handling protocol errors in a receiver of a wireless communications system includes receiving a ciphered PDU, deciphering the PDU, and triggering a reset procedure when at least one field of the PDU comprises an invalid value.

A method for network protocol error correction comprising, generating a data packet including a cycle redundancy check (CRC) field, an end to end error field that remains unchanged as the data packet is sent over a network, for use in performing error detection in one or more field of the data packet, and a flag field associated with the end to end field to indicate that the end to end error field contains error correction data, and sending the data packet over a network via an Ethernet protocol.

A process of using a cache of outgoing packet identifiers to recover from a protocol error includes assigning a receive identifier associated with a user entity to a traffic stream at a receive node. The receive identifier is sent to a transmit node. The transmit node is instructed to associate the receive identifier with a receive plurality of data packets of the traffic stream. The transmit identifier associated with the user entity is assigned to the traffic stream at the transmit node. The transmit node identifier, the receive node identifier, and the address of the receive node are stored in a transmit cache at the transmit node for each of the receive plurality of data packets. The receive plurality of data packets is sent from the transmit node to the receive node. An error message is received at the transmit node from the receive node, indicating that the receive identifier was not recognized. The transmit cache is searched for the transmit node identifier using the receive node identifier and the address of the receive node. The user entity associated with the transmit node identifier is identified, and the user entity is removed.

A method for performing security error recovery in a wireless communications system includes a Packet Data Convergence Protocol layer of the wireless communications system performing a security protection procedure for a Non-Access Stratum message, and the Packet Data Convergence Protocol layer including a protocol error detection and recovery function, for detecting a security error due to a security parameter going out of synchronization and for recovering synchronization of the security parameter.

A method for handling protocol errors in a wireless communications system includes establishing a first signaling radio bearer and triggering an integrity protection procedure of the first signaling radio bearer (302), receiving a first message on the first signaling radio bearer (304), and neglecting the first message and initiating a synchronization procedure to synchronize a ciphering parameter when a predefined condition is met (306).

In a method for controlling data traffic in a wireless or other communication network, one or more hardware / software agents are deployed to interface with one or more network entities such as routers, switches, backhaul transmission lines, and wireless base stations. The agents monitor the L1 (physical) and L2 (data link) layers of the network for the presence of indicators associated with network failover operations, such as DS1 alarms and protocol errors, respectively. Based on detected indicators across all monitored network entities, the agents determine if a failover operation has occurred. If so, data congestion associated with the failover operation is controlled according to a failover congestion monitoring and recovery mode (e.g., a data source backoff model), to reduce instances of dropped calls that would otherwise occur if the failover congestion were handled according to a general purpose congestion monitoring and recovery mode of the network.

Disclosed is a method and apparatus for providing a universal SCSI bus interface in which bus performance is not degraded, and the analyzer is not negatively influenced by post processing while maintaining the ability to filter and store data using any of a number of generic logic analyzers. The SCSI bus interface does not rely on a specific clock speed and maintains the ability to view both raw data and protocol errors. The universal SCSI bus interface embodiments described herein produce stable clock signals for use by an analyzer in a form that is phase and frequency stabilized with the SCSI bus clock. This allows data sampling to mimic the performance characteristics of a device attached to the SCSI bus thereby minimizing sampling error.

A method and apparatus for conveying the identity of an MS (110) to a stand-alone Serving Mobile Location Center (SMLC) (130) are described. In one exemplary embodiment, an MS (110) is configured to encode a unique MS identifier (MS ID), such as and International Mobile Subscriber Identity (IMSI), in an extension container, which is an optional information element defined by Radio Resource Location Services (LCS) Protocol (RRLP). The extension container may be included as a component in a Measure Position Response message or a Protocol Error message. The SMLC (130) is configured to decode the extension container, retrieve the MS ID, and store the MS ID in association with a unique the positioning session identifier. Advantageously, the MS (110) may be configured with a test mode parameter. In one embodiment, encoding of the MS ID in the extension container is activated at the test MS (110) only when the test mode parameter is set to an ''on'' state.

The invention provides a communication service processing method and system, a service unit, a terminal and a storage medium, and relates to the technical field of communication. The communication service processing method comprises the steps that a service unit receives a Diameter protocol error code response message, and the Diameter protocol error code response message is used for representingthat a signaling storm occurs in the HSS direction; the service unit generates and sends an SIP (Session Initiation Protocol) error code response message to the calling terminal according to the Diameter protocol error code response message, and the SIP error code response message is used for indicating the calling terminal to initiate a registration request in a delayed manner or call the calledterminal through the CS network. By utilizing the technical scheme of the invention, the adverse effect of signaling storm on service processing can be reduced.

A method for recovering a protocol error in a receiver of a wireless communications system includes receiving a packet including a compressed and ciphered header, performing a deciphering procedure on the header according to at least a deciphering parameter to get a deciphered result, performing a decompression procedure on the deciphered result according to a decompression algorithm to get a decompression result, performing a check procedure on the decompression result to determine whether the deciphering parameter is correct, and recovering the protocol error when a result of the check procedure indicates that the deciphering parameter is not correct.

A method for handling protocol errors in a receiver of a wireless communications system includes receiving a ciphered PDU (302), deciphering the PDU (304), and triggering a reset procedure when at least one field of the PDU comprises an invalid value (306).

Malfunctioning or misbehaving mobile stations (12), that are capable nonetheless of continuing to communicate with a wireless communication system (10), are detected for the purposes of either shutting down misbehaving mobile stations or reporting misbehaving mobile stations so that corrective action can be taken. An error detector and interpreter (23) detect (42) in wireless communication signals received from a mobile station any breach of protocol errors indicative of faulty operation of the mobile station. A misbehavior analyzer (26) analyzes (44) the errors over time to determine whether the mobile station is misbehaving. Normal access of the mobile station to the wireless communication system is shut down (46) or a message is sent to the subscriber in the event the mobile station is determined to be misbehaving. The mobile station also has a shutdown mode of operation (36), controllable by a message sent from the network, in which the mobile station remains idle and nonfunctional until repaired. The quality of service to subscribers using the wireless communication system is thus improved.

The embodiment of the invention discloses a verifying method for protocol error processing of a solid state disk. The method includes the steps of loading a configuration file to meet the state required by testing, loading fault injection scripts of a protocol application layer and all layers below, triggering the injection of a corresponding first preset fault to a protocol chain when receiving afirst preset testing command sent by a test device, capturing first fault processing data of the solid state disk for processing the first preset fault, conducting correctness analysis on the captured first fault processing data, executing the next round of preset fault injection, and repeatedly executing the steps till all preset fault tests are completed. By means of the method, by injecting various common faults of the application layer and other layers below for fault testing, the processing correctness of the common faults of the application layer and all the layers below of the solid state disk can be tested. The embodiment of the invention further discloses a verifying system for protocol error processing of the solid state disk.

Provided is a method of constituting a highly reliable control network in an IP-based network environment and, more particularly, a protocol technology for automatic control channel constitution and protection. The method includes functions of protection group (PG)-1 / 3 control channel identification, detour control channel identification, an automatic switchover, a forced switchover, a control channel unavailability notice, a protection / switchover properties information inquiry, an Hello, a protocol error notice, and re-transmission. This invention provides a protection mechanism of control channels without additional overhead and with higher level of resilience capability to improve shortcomings of the LMP and MPLS based schemes.

Testing a packet sequence number checker. The packet sequence number checker may check a packet-based data communication between two interconnected devices. An error injector may be provided in-between the interconnected devices such that the data packets may be received from one of the two interconnected devices and may be sent to the other one of the two interconnected devices by the error injector. A received packet is randomly selected from a packet data stream between the two interconnected devices and stored in a buffer. A length of a later received data packet from the same sender of the two interconnected devices is compared with the selected buffered data packet, and the later received data packet is replaced by the selected buffered data packet.

The invention relates to a modeling and formalized verification method for cache consistency protocol verification, and the method comprises the steps: building a protocol model which comprises a plurality of processor nodes, directory nodes and a communication mechanism through a structured modeling mode, and constructing an asynchronous message mechanism to simulate disordered concurrent communication; protocol behavior rules such as processor requests, directory responses and network receiving are defined, protocol property invariants are set, semantic constraints such as data consistency, confirmation before writing and sharing state legality are covered, model verification is carried out in a state space traversal mode, breadth-first search and a symmetry recognition mechanism are supported, and the method is suitable for the protocol behavior rules. A protocol error or deadlock state is effectively found, a traceable error path is generated, a verifier can automatically generate source codes through a compiler and operate on a host platform, and rapid verification and result output of a protocol model are achieved. The method has good protocol adaptability and model reusability, and is suitable for formalized verification of various cache consistency protocols.

Disclosed is a method and apparatus for providing a universal SCSI bus interface in which bus performance is not degraded, and the analyzer is not negatively influenced by post processing while maintaining the ability to filter and store data using any of a number of generic logic analyzers. The SCSI bus interface does not rely on a specific clock speed and maintains the ability to view both raw data and protocol errors. The universal SCSI bus interface embodiments described herein produce stable clock signals for use by an analyzer in a form that is phase and frequency stabilized with the SCSI bus clock. This allows data sampling to mimic the performance characteristics of a device attached to the SCSI bus thereby minimizing sampling error.

The embodiment of the invention discloses a method for positioning an erroneous label switched path LSP. The method comprises the following steps: a path computation client PCC receives at least one path computation element communication protocol error PCErr message, wherein the PCErr message carries identification information of at least one erroneous label switched path LSP; and the PCC determines the erroneous LSP according to the received PCErr message. The embodiment of the invention further discloses a path computation client PCC and a path computation element PCE.

The invention relates to a fault finding method of a computer memory, in particular to a rapid troubleshooting method of a high-speed memory. In the method, whether the fault is repeatable is firstly determined, and the fault state is repeated. Secondly, a bus of the memory is connected with a logic analyzer which is provided with a detector or an interpolator, which can rapidly find out the timing relationship of the whole DDR2 bus, errors of 1 percent, the quality of the clock and protocol errors. Finally, a high performance oscilloscope with high bandwidth detection ability is used for implementing the measurement of technology parameters. The detection is implemented at a receiving end of signals. If WRITE impulses sent to the memory are required to be captured, the detection is implemented at SDRAM end. If READ impulses from the memory are required to be captured, the detection is implemented at the control end of the memory. The fault finding method mainly aims at solving technical problems met at the exclusion of intermittent memory faults and is beneficial to the normal operation of the memory.

A method for recovering a protocol error in a receiver of a wireless communications system includes receiving a packet including a compressed and ciphered header, performing a deciphering procedure on the header according to at least a deciphering parameter to get a deciphered result, performing a decompression procedure on the deciphered result according to a decompression algorithm to get a decompression result, performing a check procedure on the decompression result to determine whether the deciphering parameter is correct, and recovering the protocol error when a result of the check procedure indicates that the deciphering parameter is not correct.