54 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.

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.

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.

Techniques and mechanisms detect deviations from a protocol being used to communicate between devices, for example, in hard logic (e.g., implemented as an ASIC or fixed circuitry) and soft logic (e.g., implemented in configurable logic of an FPGA). Techniques and mechanisms are described for detecting a variety of deviations from a protocol.

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 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.

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.

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.

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 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.