Common packet channel

A code-division-multiple-access (CDMA) wireless remote station, comprising:

• a CDMA transmitter;
• a CDMA receiver;
• and
• a controller coupled to the CDMA receiver for responding to signals received via the CDMA receiver and coupled for controlling the CDMA transmitter, such that in operation the CDMA remote station is for performing the following steps:
• transmitting over a common packet channel a plurality of coded preamble signals at sequentially increasing discrete power levels to the base station;
• receiving an acknowledgement signal from the base station following transmission of one or more of the coded preamble signals;
• transmitting a collision detection preamble to the base station in response to receipt of the acknowledgement signal;
• receiving a base station collision detection preamble from the base station, the base station collision detection preamble corresponding to the transmitted collision detection preamble;
• transmitting any of data and control information over the common packet channel to the base station, in response to receipt of the base station collision detection preamble;
• and
• receiving over the common synchronization channel any of data and control information from the base station.

A base band processor for use in a code-division-multiple-access (CDMA) wireless base station, comprising:

• a preamble processor, for detecting a preamble in received spread-spectrum signals;
• a data and control processor, for detecting and processing data and control information contained in the received spread-spectrum signals;
• an encoder, for encoding data;
• an interleaver, coupled to the encoder, for interleaving encoded data;
• a packet formatter, coupled to the interleaver, for formatting any of the interleaved encoded data, signaling, acknowledgment signal, collision detection signal, pilot signal and transmission power control (TPC) signal into a packet;
• and
• a controller coupled to the preamble processor, the data and control processor and to the packet formatter for controlling the preamble processor, the data and control processor and the packet formatter, such that in operation the base band processor is for performing the following steps:
• detecting a first one of a sequence of coded preamble signals of the sequence that is embedded in a first spread-spectrum signal received at an adequate power level;
• upon detection of the first coded preamble signal at the adequate power level, generating a packet comprising an acknowledgement signal and outputting the packet comprising the acknowledgement signal to a modulator of the wireless base station;
• detecting a collision detection preamble in a second spread-spectrum signal received at the wireless base station;
• generating a packet comprising a base station collision detection preamble corresponding to the received collision detection preamble and outputting the packet comprising the base station collision detection preamble to the modulator of the wireless base station;
• and
• generating a packet comprising any of data and control information and outputting the packet to the modulator of the wireless base station.

A base band processor for use in a code-division-multiple-access (CDMA) wireless remote station, comprising:

• an acknowledgment detector for detecting an acknowledgment in received spread-spectrum signals;
• a data and control processor, for detecting and processing data and control information contained in the received spread-spectrum signals;
• a encoder, for encoding data;
• an interleaver, coupled to the encoder, for interleaving encoded data;
• a preamble generator for generating coded preamble signals;
• a multiplexer, coupled to the interleaver and to the preamble generator, for multiplexing the interleaved data and the coded preamble signals;
• a packet formatter, coupled to the multiplexer, for formatting the multiplexed data and the coded preamble signals into packets;
• and
• a controller coupled to the acknowledgment detector and to the packet formatter for controlling the modulator, the acknowledgment detector, the preamble generator, the multiplexer and the packet formatter, such that in operation the base band processor is for performing the following steps:
• generating and outputting a plurality of packets comprising a sequence of coded preamble signals at sequentially increasing discrete power levels;
• detecting an acknowledgement of at least one of the output packets, in a first received spread-spectrum signal;
• upon detection of the acknowledgement, generating and outputting a packet comprising a collision detection preamble;
• detecting in a second received spread-spectrum signal a base station collision detection preamble corresponding to the outputted collision detection preamble;
• in response to the detection of the base station collision detection preamble, generating and outputting a packet comprising data and control information;
• and
• processing any of data and control information in a third received spread-spectrum signal.