Method for improved robust header compression with low signal energy
First Claim
1. A method for packet transmission in a wireless communication system comprising:
- dividing a packet offered for transmission into Q equal portions; and
for each portion, scheduling transmission over multiple transmission time intervals.
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Accused Products
Abstract
A method is provided a wireless system for reliably transmitting context information in robust header compression at low signal energies. More particularly, the methodology of the invention provides an elongated virtual Transmission Time Interval (Super TTI) for the first few (in particular, the first) non-compressed packet (that includes upper layer headers) of a packet stream transmitted using ROHC compression. Improved reception reliability for the uncompressed packet, in particular to decode the headers, results by application to the Super TTI of a combination of TTI Bundling techniques, RLC segmentation and association with multiple HARQ processes and use of enough HARQ rounds.
22 Citations
19 Claims
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1. A method for packet transmission in a wireless communication system comprising:
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dividing a packet offered for transmission into Q equal portions; and for each portion, scheduling transmission over multiple transmission time intervals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for packet transmission in a wireless communication system comprising:
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receiving at a mobile station scheduling grants for a number Q of HARQ interlaces over multiple transmission time intervals; segmenting an initial packet offered for transmission at the base station into Q equal fractional segments, wherein each segment is scheduled on its own HARQ interlace in successive transmission time intervals; upon completion of L HARQ rounds for each of the Q packet segments, if any segment has not been successfully decoded, returning to the segmenting step with a next packet waiting in the base station'"'"'s transmission queue; if all of the Q packet segments have been successfully decoded using no more than L HARQ rounds each, implementing ROHC compression for subsequent packets offered for transmission; upon successful decoding of all packet segments for a given offered packet, discarding one or more stale packets waiting in a transmission queue; and continuing to transmit remaining packets offered for transmission based on ROHC compression. - View Dependent Claims (17, 18, 19)
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Specification