Abstract: A method, apparatus and computer program operate so as to formulate a request at a terminal for a network access node to transmit a broadcast message; to transmit the request on an out-of-band radio channel for reception by the network access node; and to receive the broadcast message prior to a next scheduled time for the broadcast message to be transmitted. The network may be a WiMAX network, and the broadcast message may be at least one of a downlink channel descriptor/uplink channel descriptor and system identity information advertisement message. Also disclosed is a corresponding network access node that operates so as to receive a request from at least one terminal, where the request is a request to transmit a broadcast message and is received on an out-of-band radio channel. The network access node responds by transmitting the broadcast message prior to a next scheduled time for the broadcast message to be transmitted.

Abstract: In a code division multiplex transmitting and receiving system, the transmitting apparatus inserts a clock signal in the code division multiplex signal. The clock signal has a frequency equal to a null frequency in the frequency spectrum of the code division multiplex signal. The receiving apparatus extracts this frequency component from the received signal and recovers the clock signal, using an ordinary clock recovery device of the type designed to recover a clock signal from a bi-level signal. The recovered clock signal is used as a synchronizing signal in the processing of the received signal.

Abstract: An improved method of processing random access procedures, wherein the network receives at least one access burst to allow a network to estimate uplink received timing, the access burst containing at least a preamble, and transmits information for responding to the at least one access burst, while the mobile terminal configures at least one access burst containing at least a preamble and transmits the at least one access burst to allow a network to at least estimate uplink received timing.

Abstract: Providing wireless communication between an access point and a wireless device includes the wireless device operating in a first reduced power mode for a first period of time, where the wireless device does not receive communications while operating in the first reduced power mode and includes the wireless device operating in a full power mode for a second period of time, where the wireless device transitions back into the first reduced power mode in response to there being no communication from the access point to the wireless device during the second period of time. The wireless device may be a wireless sensor. In response to the access point directing the wireless sensor to collect data at a particular collection time, the wireless sensor may enter the first reduced power mode for a time prior to the collection time.