EP0938207A2
Expired / Lapsed
EP
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System and method for incremental redundancy transmission in a communication system
Assignee: Nokia of America Corp
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Filing: 1999-02-23
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Granted: —
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Expires: 2019-02-23
Abstract
Abstract A system and method for incremental redundancy transmission in a communication system. A time slot is provided having at least one sub-slot with a fixed size, and a data block sized to fit in the sub-slot, a header having a one data block sequence number in the header for the time slot. A parity block is sized smaller than the data block such that the parity block and the data block sequence number fit within the sub-slot. The data block and parity block are trnasmitted in the sub-slot within the time slot. In the header for the time slot the number of data blocks and parity blocks transmitted are identified.
Inventors
- 👤 Krishna Balachandran
- 👤 Richard Paul Ejzak
- 👤 Sanjiv Nanda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 03:14
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/12; H04L1/16; H04L1/1607; H04L1/1671; H04L1/0001; H04L1/0002; H04L1/0003; H04L1/0023; H04L1/0025; H04L1/0026; H04L1/004; H04L1/0056; H04L1/007; H04L1/0078; H04L1/0083; H04L1/08; H04L1/1614; H04L1/18; H04L1/1812; H04L1/1816; H04L1/1819; H04L1/0059; H04L1/0067; H04L1/0068; H04L1/0071; H04L1/0072
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
90 words
An incremental redundancy transmission communication system
comprising: a time slot signal generator that creates a time slot signal having at least one
sub-slot with a fixed size; a data block signal generator that creates a data block signal sized to fit in the at
least one sub-slot; a header adder that generates a header having a data block signal sequence
number in the header for the time slot signal; and a receiver that identifies in the header for the time slot signal a number of data
block signals consecutively transmitted.
Claim 2
Dependent Claim
62 words
The system of claim 1 including a parity block signal generator that
creates a parity block signal sized smaller than the data block signal such that the parity
block signal and the data block signal sequence number fit within the sub-slot, and a
transmitter that transmits the data block signal and parity block signal in the sub-slot
within the time slot signal.
Claim 3
Dependent Claim
32 words
The system of claim 2 wherein the receiver identifies in the header for the
time slot signal the number of data block signals and parity block signals in the time slot
signal.
Claim 4
Dependent Claim
37 words
The system of claim 2 wherein the data block signal generator and parity
block signal generator create an integer number of total data block signals and the parity
block signals that fit in the time slot signal.
Claim 5
Dependent Claim
37 words
The system of claim 2 including an encoder that separately encodes the
sequence of data block signals and parity block signals, and an interleaver that separately
interleaves the sequence of data block signals and parity block signals.
Claim 6
Dependent Claim
37 words
The system of claim 5 further including an assembler that assembles the
sequence of data block signals and parity block signals into time slot signals as
determined by a retransmission protocol after to the encoder and interleaver.
Claim 7
Dependent Claim
24 words
The system of claim 1 including a transmitter that transmits a parity block
signal with the data block signal sequence number in the sub-slot.
Claim 8
Dependent Claim
28 words
The system of claim 1 including a receiver that identifies the sequence of
data block signals in the time slot as being consecutive from a first data block.
Claim 9
Dependent Claim
22 words
The system of claim 1 including a transmitter that sizes the data block
signals for operation in a plurality of modulation schemes.
Claim 10
Dependent Claim
33 words
The system of claim 9 wherein the transmitter selectively sizes the data
block signals so that the data block signals fit within the sub-slot at each one of the
plurality of modulation schemes.
Claim 11
Dependent Claim
72 words
The method of claim 10 wherein the transmitter uses a code rate defined
by the equation ND ( ND + MP ) = N (2 N - q ) in which N is the data block signal size, M is a parity block signal size, q is the
length of the data block signal sequence number field, D is the number of data blocks and
P is the number of parity blocks.
Claim 12
Dependent Claim
35 words
The system of claim 1 including a computation unit that computes a frame
check sequence, and a adder that adds the frame check sequence to the radio link
protocol frame to define a frame Bi.
Claim 13
Dependent Claim
68 words
The system of claim 12 including an encoder that encodes the frame Bi
into N data bits and N parity bits, a first segmenter that segments the N data bits into D
data block signals, a second segmenter that segments the N parity bits into P parity block
signals of equal size, and a puncturing unit that selectively punctures the P parity block
signals to insert a header.
Claim 14
Dependent Claim
25 words
The system of claim 13 wherein the header includes a header type
identifier and a data block signal sequence number for selected parity block signals.
Claim 15
Dependent Claim
23 words
The system of claim 13 further includes a memory unit that stores
information corresponding to the N data bits and N parity bits.
Claim 16
Dependent Claim
23 words
The system of claim 15 wherein the memory unit includes a bitmap
for delivered D data block signals and P parity block signals.
Claim 17
Independent Claim
80 words
A method for incremental redundancy transmission in a
communication system that uses radio protocol frames, comprising the steps of: creating a time slot signal having at least one sub-slot with a fixed size; creating a data block signal sized to fit in the sub-slot; establishing a header having a data block signal sequence number in the
header for the time slot signal; and identifying in the header for the time slot signal the number of data block
signals consecutively transmitted.
Claim 18
Dependent Claim
56 words
The method of claim 17 including the steps of creating a parity block
signal sized smaller than the data block signal such that the parity block signal and the
data block signal sequence number fit within the sub-slot and transmitting the data
block signal and parity block signal in the sub-slot within the time slot signal.
Claim 19
Dependent Claim
24 words
The method of claim 17 including the step of transmitting the parity
block signal with the data block signal sequence number in the sub-slot.
Claim 20
Dependent Claim
27 words
The method of claim 17 including the step of identifying the
sequence of data block signals in the time slot as consecutive from a first data block.
Claim 21
Dependent Claim
22 words
The method of claim 17 including the step of sizing the data block
signals for operation in a plurality of modulation schemes.
Claim 22
Dependent Claim
35 words
The method of claim 21 including the step of selectively sizing of
the data block signals so that the data block signals fit within the sub-slot at each one of
the plurality of modulation schemes.
Claim 23
Independent Claim
95 words
A method for incremental redundancy transmission in a
communication system, comprising the steps of: creating a time slot signal having a sub-slot with a fixed size; creating a data block signal sized to fit within the sub-slot; providing, in a header of the time slot signal, a data block signal sequence
number for a first data block signal in a sequence of data block signals; and creating a parity block signal smaller than the data block signal such that the
parity block signal and the data block signal sequence number fit within the sub-slot
signal.
Claim 24
Independent Claim
23 words
The method of claim 23including the step of transmitting the parity block
signal with the data block signal sequence number in the sub-slot.
Claim 25
Dependent Claim
29 words
The method of claim 23 including the step of identifying the sequence of
data block signals in the time slot signal as consecutive from the first data block signal.
Claim 26
Dependent Claim
35 words
The method of claim 18 or 23 including the step of identifying in the header for
the time slot signal the number of data block signals and parity block signals in the time
slot signal.
Claim 27
Dependent Claim
22 words
The method of claim 26 including the step of sizing the data block signals
for operation in a plurality of modulation schemes.
Claim 28
Dependent Claim
35 words
The method of claim 27 including the step of selectively sizing of the data
block signals so that the data block signals fit within the sub-slot at each one of the
plurality of modulation schemes.
Claim 29
Dependent Claim
29 words
The method of claim 18 or 23 including the step of inserting into the time slot
signal an integer number of total data block signals and parity block signals.
Claim 30
Dependent Claim
74 words
The method of claim 22 or 29 wherein the transmitter uses a code rate defined
by the equation ND ( ND + MP ) = N (2 N - q ) in which N is the data block signal size, M is a parity block signal size, q is the
length of the data block signal sequence number field, D is the number of data blocks and
P is the number of parity blocks.
Claim 31
Dependent Claim
36 words
The method of claim 18 or 23 involving the steps of separately encoding the
sequence of data block signals and parity block signals, and interleaving separately the
sequence of data block signals and parity block signals.
Claim 32
Dependent Claim
40 words
The method of claim 18 or 31 including the step of assembling the sequence of
data block signals and parity block signals into time slot signals as determined by a
retransmission protocol prior to the steps of encoding and interleaving.
Claim 33
Dependent Claim
45 words
The The method of claim 32 including including the steps of decoding the sequence of
data block signals and parity block signals, and decoding the data stored at the
transmitter only when a positive acknowledgment is received that the time slot signal is
correctly decoded.
Claim 34
Dependent Claim
33 words
The method of claim 17 or 33 including the steps of computing a frame check
sequence, and adding the frame check sequence to the radio link protocol frame to define
a frame Bi.
Claim 35
Dependent Claim
56 words
The method of claim 34 including the steps of encoding the frame Bi into
N data bits and N parity bits, segmenting the N data bits into D data block signals,
segmenting the N parity bits into P parity block signals of equal size, and selectively
puncturing the P parity block signals to insert a header.
Claim 36
Dependent Claim
25 words
The method of claim 35 wherein the header includes a header type
identifier and a data block signal sequence number for selected parity block signals.
Claim 37
Dependent Claim
62 words
The method of claim 35 including the steps of storing in a memory
information corresponding to the N data bits and N parity bits, transmitting the D data
block signals corresponding to the radio link protocol, decoding the Bi frame, and
transmitting additional P parity block signals corresponding to the radio link protocol
when whenever the Bi frame is not correctly decoded.
Claim 38
Dependent Claim
19 words
The method of claim 37 including the step of clearing the memory
whenever the Bi frame is correctly decoded.
Claim 39
Dependent Claim
23 words
The method of claim 37 in which the memory includes a bitmap for
delivered D data block signals and P parity block signals.
References Cited (Backward Citations)
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