Abstract: Techniques for efficiently configuring and reconfiguring calls using a set of default configurations and differential encoding are described. At the network side, a configuration to use for communication with a wireless device is initially selected. A default configuration is identified from among a set of default configurations. The differences, if any, between the selected configuration and the default configuration are ascertained. An identity for the default configuration and the differences, if any, are sent to the wireless device to convey the selected configuration. At the wireless device, the message containing the identity for the default configuration is initially received. The default configuration is obtained from a memory based on the identity. A determination is made whether the message contains differences between the default configuration and the selected configuration. Values for the default configuration are replaced with the differences, if any, sent in the message.

Abstract: Techniques for performing ciphering and re-ordering using a single full sequence number are described. A transmitter ciphers input packets to obtain ciphered packets, with each input packet being ciphered with a full sequence number. The transmitter generates output packets for the ciphered packets, with each output packet including a partial sequence number used for re-ordering and derived from the full sequence number. The full sequence number may be incremented for each input packet or each byte of each packet. The partial sequence number may be used as a sequence number for RLC and may be used for re-ordering, duplicate detection, error correction, and/or other functions. A receiver performs the complementary processing, re-orders received packets based on the partial sequence number included in each packet, and deciphers the received packets using the partial sequence number included in each received packet.

Abstract: Handling of integrity check failure in a wireless communication system can safely send the mobile station to the idle mode upon detection of security failure. Alternatively or in addition, attempts to recover from the security failure situation can be enabled without forcing the mobile station to enter idle mode. The mobile station autonomously transitions to idle mode when the integrity check failure is detected a certain threshold number ‘X’ times during a specified period ‘Y’. Whereupon, the mobile station initiates the Radio Resource Control (RRC) connection re-establishment procedure after integrity check failure is detected. In the RRC connection re-establishment procedure, the security parameters are re-initialized to provide a possibility to recover from the failure situation.

Abstract: A speech signal is decoded by a vocoder and the reconstructed speech samples are provided to a decoded frame check unit. The decoded frame check unit examines the energy of the reconstructed speech and compares the energy of the reconstructed speech to a range of acceptable energy values. If the energy is not within the range of energy values, a frame erasure is declared and the decoded frame is prevented from being to the speaker in the telephone. In the exemplary implementation, the speech is reconstructed by a vocoder which includes a postfilter which in turn includes automatic gain control. The automatic gain control element of a post filter includes a means for measuring the energy of the decoded speech data. This measured energy is used by the decoded frame check unit to decide whether to provide the decoded data to the user or to declare a frame erasure. This implementation reduces the amount of additional hardware necessary to implement the present invention.

Abstract: A method and apparatus includes a real time event engine that monitors event signals. A real time event detector within the real time event engine detects when the real time event occurs. Thereupon, real time event commands within a real time event command buffer are fetched and consumed by the command processor in response to the occurrence of the real time event. The real time event detector contains a plurality of control registers, which contain an event selector register, a real time command buffer point register, and a real time command buffer length register. A driver may program the registers, whereupon a singe real time event detector may be used in conjunction with a plurality of real time event command buffers.

Abstract: Resource management techniques in multi-processor systems are described. Embodiments include a multi-processor system having a primary processor for communication with pipelined secondary processors. The secondary processors include registers containing status information for tasks executed by the respective secondary processors. The primary processor is provided with direct access to contents of the registers and manages computational and memory resources of the multi-processor system based on the acquired status information.