Physical channel segmentation in wireless communication system

• US 9,130,712 B2
• Filed: 02/29/2008
• Issued: 09/08/2015
• Est. Priority Date: 02/29/2008
• Status: Active Grant

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Inventors: Blankenship, T. Keith, Blankenship, Yufei W., Classon, Brian K., Nimbalker, Ajit, Schooler, Anthony R.
• Primary Examiner(s): Hsu, Alpus H
• Assistant Examiner(s): Houshmand, Hooman
• Application Number:
  US12/040,436
• Publication Number:
  US 20090219911A1
• Time in Patent Office: 2,748 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04L 1/0042 Encoding specially adapted to other signal generation operation, e.g. in order to reduce transmit distortions, jitter, or to improve signal shape H04L1/0067 takes precedence
• CPC Class Codes: H04L 1/0047 Decoding adapted to other signal detection operation in conjunction with sequence estimation or equalization H04L25/03286
• CPC Class Codes: H04L 1/0067 Rate matching H04L1/0013 and H04L1/08 take precedence
• CPC Class Codes: H04L 1/0656 Cyclotomic systems, e.g. Bell Labs Layered Space-Time [BLAST]
• CPC Class Codes: H04L 2001/0094 Bus
• CPC Class Codes: H04L 25/03171 Arrangements involving maximum a posteriori probability [MAP] detection
• CPC Class Codes: H04L 27/18 Phase-modulated carrier systems, i.e. using phase-shift keying H04L27/32 takes precedence
• CPC Class Codes: H04L 27/34 Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems

Abstract

A wireless communication transmitter (200) configured to segment a transport block into C segments, encode each segment into a set of encoded bits, determine, for γ encoded segments, a subset of size M₀′ of encoded bits for each encoded segment and for C−γ encoded segments, a subset of size M₁′ of encoded bits for each encoded segment, wherein the subset sizes M₀′ and M₁′ differ at most by P bits, where P is a product of a modulation order and a number of transmission layers over which the transport block is transmitted. The selected subsets of encoded bits are concatenated and grouped to form modulation symbols of the modulation order.

Claims

1. A wireless communication transmitter, comprising:

a segmenting entity configured to segment a transport block into C segments,

an encoding entity configured to encode each segment into a set of encoded bits,

a rate matching entity configured to determine, for γ

encoded segments, a subset of size M₀′

of encoded bits for each encoded segment,

the rate matching entity configured to determine, for C−

γ

encoded segments, a subset of size M₁′

of encoded bits for each encoded segment,

the subset sizes M₀′ and

M₁′

differ at most by P bits, where P is a product of a modulation order and a number of transmission layers for the transport block,

a concatenating entity configured to concatenate the selected subsets of encoded bits, and

a grouping entity configured to group the concatenated selected subsets of encoded bits in order to form modulation symbols of the modulation order.

2. The transmitter of claim 1 further comprising a transmitter entity configured to transmit the modulation symbols over the number of transmission layers.

3. The transmitter of claim 1, wherein the subset sizes M₀′

and M₁′

are both a multiple of the modulation order.

4. The transmitter of claim 1, wherein the subset sizes M₀′

and M₁′

are both a multiple of the number of transmission layers.

5. The transmitter of claim 1, wherein the subset sizes M₀′

and M₁′

are both a multiple of the product of the modulation order and the number of transmission layers.

6. The transmitter of claim 1,

M₀′

and M₁′

based on a total number of bits G available for transmission of the transport block,

wherein γ

=G/(Q×

L) mod C, where Q denotes the modulation order and L denotes the number of transmission layers.

7. The transmitter of claim 6, wherein L=1, 2, or 4.

8. The transmitter of claim 6, wherein Q=2, 4, or 6.

9. The transmitter of claim 1, the segmenting entity configured to segment the transport block such that at least two segments contain a common number of bits.

10. A method in a wireless communication transmitter, the method comprising:

segmenting a transport block into C segments;

encoding each segment into a set of encoded bits;

for γ

encoded segments, determining a subset of size M₀′

of encoded bits for each encoded segment,

for C−

γ

encoded segments, determining a subset of size M₁′

of encoded bits for each encoded segment,

the subset sizes M₀′ and

M₁′

differ at most by P bits, where P is a product of a modulation order and a number of transmission layers for the transport block;

concatenating the selected subsets of encoded bits; and

grouping the concatenated selected subsets of encoded bits in order to form modulation symbols of the modulation order.

11. The method of claim 10 further comprising transmitting the modulation symbols over the number of transmission layers.

12. The method of claim 10, wherein the subset sizes M₀′

and M₁′

are both selected to be a multiple of the modulation order.

13. The method of claim 10, wherein the subset sizes M₀′

and M₁′

are both selected to be a multiple of the number of transmission layers.

14. The method of claim 10, wherein the subset sizes M₀′

and M₁′

are both selected to be a multiple of the product of the modulation order and the number of transmission layers.

15. The method of claim 10,

the subsets of sizes M₀′

and M₁′

are selected based on a total number of bits G available for transmission of the transport block,

wherein γ

=G/(Q×

L) mod C, where Q denotes the modulation order and L denotes the number of transmission layers.

16. The method of claim 10, segmenting the transport block such that at least two segments contain same number of bits of the transport block.

17. A method in a wireless communication transmitter, the method comprising:

segmenting a transport block into multiple segments;

encoding each segment, each encoded segment having a set of encoded bits;

selecting a subset of encoded bits for each encoded segment such that at least two segments have different resultant coding rates, the selection based on a total number of bits available for transmission of the transport block;

concatenating the selected subsets of encoded bits; and

grouping the concatenated selected subsets of encoded bits to form modulation symbols of the modulation order.

18. The method of claim 17, wherein the size of the selected subsets of encoded bits for each encoded segment is a multiple of an order of modulation at which the selected subsets of encoded bits are modulated.

19. The method of claim 17, wherein the size of the selected subsets of encoded bits for each encoded segment is a multiple of the number of transmission layers over which the transmission of the transport block occurs.

20. The method of claim 17, wherein the size of the selected subsets of encoded bits for each encoded segment is a multiple of the product of the modulation order and the number of transmission layers.