System and method to extract uplink status flag bits in a cellular wireless network
First Claim
1. A method to determine whether a first wireless terminal may transmit on an uplink to a servicing base station in a cellular wireless communication system, the method comprises:
- receiving four Radio Frequency (RF) bursts from the servicing base station, wherein the four RF bursts carry a data block that includes;
Unlink State Flag (USF) bits; and
Data bits intended for a second wireless terminal;
processing the four RF bursts to produce the data block in an encoded format, wherein processing the four RF bursts to produce the data block comprises;
for each of four received RF bursts;
down converting each RF burst to produce a baseband signal;
sampling the baseband signal to produce a plurality of samples;
pre-equalization processing the plurality of samples; and
equalizing the plurality of samples to produce a plurality of soft decisions corresponding to the RF burst;
combining the plurality of soft decisions of the four RF bursts to form the data block; and
de-interleaving the data block; and
partially decoding the data block in the encoded format to extract the USF bits; and
using the USF bits to determine whether the first wireless terminal may transmit on the uplink to the servicing base station.
7 Assignments
0 Petitions
Accused Products
Abstract
Determining whether a first wireless terminal may transmit on an uplink to a servicing base station in a cellular wireless communication system includes first receiving a plurality of a Radio Frequency (RF) bursts at a wireless terminal from a servicing base station. These RF bursts carry a data block containing both Uplink Status Flag (USF) bits and Data bits. Data bits may or may not be intended for the receiving wireless terminal. The RF bursts are processed to produce the data block in an encoded format. This data block is then partially decoded to extract the USF bits when the data bits are not intended for the receiving wireless terminal. These USF bits determine when the receiving wireless terminal can transmit or uplink to the servicing base station. The partial decoding may be halted once the USF bits have been extracted from the received data block to reduce power consumption and processing requirements.
13 Citations
28 Claims
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1. A method to determine whether a first wireless terminal may transmit on an uplink to a servicing base station in a cellular wireless communication system, the method comprises:
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receiving four Radio Frequency (RF) bursts from the servicing base station, wherein the four RF bursts carry a data block that includes; Unlink State Flag (USF) bits; and Data bits intended for a second wireless terminal; processing the four RF bursts to produce the data block in an encoded format, wherein processing the four RF bursts to produce the data block comprises; for each of four received RF bursts; down converting each RF burst to produce a baseband signal; sampling the baseband signal to produce a plurality of samples; pre-equalization processing the plurality of samples; and equalizing the plurality of samples to produce a plurality of soft decisions corresponding to the RF burst; combining the plurality of soft decisions of the four RF bursts to form the data block; and de-interleaving the data block; and partially decoding the data block in the encoded format to extract the USF bits; and using the USF bits to determine whether the first wireless terminal may transmit on the uplink to the servicing base station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A wireless terminal that comprises:
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a Radio Frequency (RF) front end operable to communicate with a servicing base station, wherein the RF front is operable to receive four RF bursts from the servicing base station that carries a data block having Uplink State Flag (USF) bits and data bits intended for a differing wireless terminal and to down convert the four RF bursts to produce a baseband signal, wherein processing the four RF bursts to produce the baseband signal comprises for each of four received RF bursts down converting each RF burst to produce a baseband signal; a baseband processor communicatively coupled to the RF front end that is operable to receive the baseband signal from the RF front end and to process the baseband signal to produce the data block in an encoded format wherein processing the baseband signal to produce the data block comprises; sampling the baseband signal to produce a plurality of samples; pre-equalization processing the plurality of samples; and equalizing the plurality of samples to produce a plurality of soft decisions corresponding to the RF burst; combining the plurality of soft decisions of the four RF bursts to form the data block; and de-interleaving the data block; and an enCOder/DECoder (CODEC) processing module communicatively coupled to the baseband processor that is operable to; receive the data block in the encoded format from the baseband processor; partially decode the data block in the encoded format to extract the USF bits; fully decode data blocks carrying data bits intended for the wireless terminal; and encode outgoing data bits to produce outgoing data blocks in an encoded format. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A wireless terminal that comprises:
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a Radio Frequency (RF) front end operable to communicate with a servicing base station, wherein the RF front receives four RF bursts from the servicing base station that carries an data block having Uplink State Flag (USF) bits and data bits intended for a differing wireless terminal and to down convert the four RF bursts to produce a baseband signal; and a baseband processor communicatively coupled to the RF front end that is operable to; receive the baseband signal from the RF front end and to process the baseband signal to produce the data block in an encoded format; partially decode the data block in the encoded format to extract the USF bits; fully decode other data blocks carrying data bits intended for the wireless terminal; and encode outgoing data bits to produce outgoing data blocks; wherein the four RF bursts are processed to produce the data blocks, the processing comprising for each of four received RF bursts; down converting each RF burst to produce a baseband signal; sampling the baseband signal to produce a plurality of samples; pre-equalization processing the plurality of samples; and equalizing the plurality of samples to produce a plurality of soft decisions corresponding to the RF burst; combining the plurality of soft decisions of the four RF bursts to form the data block; and de-interleaving the data block. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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Specification