Wireless communication system, wireless communication apparatus, and wireless communication method

• US 8,726,135 B2
• Filed: 05/24/2012
• Issued: 05/13/2014
• Est. Priority Date: 07/12/2011
• Status: Expired due to Fees

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Harata, Masakazu, Shirasawa, Hidetoshi
• Primary Examiner(s): Chaudry, M. Mujtaba K
• Application Number:
  US13/480,371
• Publication Number:
  US 20130019144A1
• Time in Patent Office: 719 Days
• Field of Search: 714/776, 714/774
• US Class Current: 714/776
• CPC Class Codes: H03M 13/09 Error detection only, e.g. using cyclic redundancy check [CRC] codes or single parity bit
• CPC Class Codes: H03M 13/2975 Judging correct decoding, e.g. iteration stopping criteria
• CPC Class Codes: H04L 1/0051 Stopping criteria
• CPC Class Codes: H04L 1/0054 Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
• CPC Class Codes: H04L 1/0061 Error detection codes
• CPC Class Codes: H04L 1/0066 Parallel concatenated codes
• CPC Class Codes: H04L 1/0067 Rate matching H04L1/0013 and H04L1/08 take precedence
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]

Abstract

A wireless communication system includes: a dividing unit to divide data into a plurality of first code blocks; a generation unit to generate first error detection information for each of the plurality of code blocks; a transmission unit to wirelessly transmit at least one of the plurality of first code blocks using a first channel and the first error detection information using a second channel; a reception unit to receive a plurality of second code blocks and second error detection information transmitted wirelessly; and a detection unit to execute error detection on each of the plurality of second code blocks using the second error detection information and to control a continuation of the error detection for the code blocks based on a result of the error detection.

Claims

1. A wireless communication system comprising:

a first adder to add first error detection information to data;

a divider to divide the data into a plurality of first code blocks;

a generator to generate second error detection information for each of the plurality of code blocks and combine the second error detection information for each of the plurality of code blocks to generate combined error information;

a second adder to add third error detection information to the combined error information;

a transmitter to wirelessly transmit the plurality of first code blocks using a first channel and the combined error information using a second channel;

a receiver to receive the plurality of first code blocks and the combined error information transmitted wirelessly; and

a detector to execute error detection on each of the plurality of first code blocks from the receiver using the combined error information from the receiver and to control a continuation of the error detection for the code blocks based on a result of the error detection.

2. The wireless communication system according to claim 1,

wherein the detector repeats the error detection at least once for each of the plurality of first code blocks and stops the repetition of the error detection when no error is detected.

3. The wireless communication system according to claim 1,

wherein the second channel is a channel used to transmit control information.

4. A wireless communication apparatus comprising:

a receiver to receive a plurality of code blocks and combined error information in which first error detection information for each of the plurality of code blocks are combined and second error detection information is added after combining the plurality of code blocks being transmitted using a first channel and the combined error information being transmitted using a second channel; and

a detector to execute error detection on each of the plurality of code blocks using the combined error information and to control a continuation of the error detection for the plurality of code blocks based on a result of the error detection.

5. The wireless communication apparatus according to claim 4,

wherein the detector repeats the error detection at least once for each of the plurality of code blocks and stops the repetition of the error detection when no error is detected.

6. A wireless communication apparatus comprising:

a first adder to add first error detection information to data;

a divider to divide the data into a plurality of code blocks;

a generator to generate second error detection information for each of the plurality of code blocks and combine the second error detection information for each of the plurality of code blocks to generate combined error information;

a seconder adder to add third error detection information to the combined error information; and

a transmitter to wirelessly transmit the plurality of code blocks using a first channel and the combined error information using a second channel.

7. The wireless communication apparatus according to claim 6,

wherein the second channel is a channel used to transmit control information.

8. A wireless communication method comprising:

adding first error detection information to data;

dividing the data into a plurality of code blocks by a wireless communication apparatus on a transmission side;

generating second error detection information for each of the plurality of code blocks;

combining the second error detection information for each of the plurality of code blocks to generate combined error information;

adding third error detection information to the combined error information; and

transmitting wirelessly at least one of the plurality of code blocks using a first channel and the combined error information using a second channel.

9. The wireless communication method according to claim 8, further comprising:

receiving, by a wireless communication apparatus on a reception side, the plurality of code blocks and the combined error information wirelessly transmitted;

executing error detection on each of a received code blocks using the combined error information; and

controlling a continuation of the error detection for the plurality of code blocks based on result of the error detection;

repeating the error detection at least once for each of the received code blocks; and

stopping the repetition of the error detection when no error is detected.

10. The wireless communication method according to claim 8,

wherein the second channel is a channel used to transmit control information.

11. A wireless communication method comprising:

receiving a plurality of code blocks and combined error information in which first error detection information for each of the plurality of code blocks are combined and second error detection information is added after combining, the plurality of code blocks being transmitted using a first channel and combined error information being transmitted using a second channel;

executing error detection on each of the plurality code blocks using the combined error information; and

controlling an continuation of the error detection for the plurality of code blocks based on a result of the error detection.

12. The wireless communication method according to claim 11, further comprising:

repeating the error detection at least once for each of the plurality of code blocks; and

stopping the repetition of the error detection when no error is detected.