US2022216941A1PendingUtilityA1

Transport block size determination for equal size code blocks

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Assignee: ERICSSON TELEFON AB L MPriority: Aug 11, 2017Filed: Mar 24, 2022Published: Jul 7, 2022
Est. expiryAug 11, 2037(~11 yrs left)· nominal 20-yr term from priority
Inventors:Mattias AnderssonYufei BlankenshipSara Sandberg
H04W 72/23H04L 1/0009H04W 72/232H04L 1/0041H04L 5/0044H04L 1/0003H04L 1/0061H04W 72/0446H04L 1/0063H04W 72/042
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Claims

Abstract

According to some embodiments, a method for use in a wireless receiver comprises determining a transport block size, TBS, for a transport block to be communicated between the wireless transmitter and a wireless receiver via a physical channel transmission. The TBS determination uses a formula accounting for cyclic redundancy check, CRC, bits. The method further comprises transmitting the transport block according to the determined TBS. In particular embodiments the formula is based on an approximate transport block size, a number of code blocks, at least one of a number of CRC bits attached to the transport block, and a number of CRC bits added to each of the C code blocks.

Claims

exact text as granted — not AI-modified
1 .- 66 . (canceled) 
     
     
         67 . A wireless transmitter comprising processing circuitry operable to:
 determine a transport block size, TBS, for a transport block to be communicated between the wireless transmitter and a wireless receiver via a physical channel transmission, the TBS determination using a formula accounting for cyclic redundancy check, CRC, bits wherein the formula is based on an approximate transport block size not accounting for CRC bits; and   transmit the transport block according to the determined TBS.   
     
     
         68 . The wireless transmitter of  claim 67 , wherein the formula is based on an approximate transport block size, TBS0, a number of code blocks, C, at least one of a number of CRC bits attached to the transport block, L2, and a number of CRC bits added to each of the C code blocks, L3. 
     
     
         69 . The wireless transmitter of  claim 68 , wherein the formula is based on a comparison of TBS0 plus a number of CRC bits attached to the transport block with a threshold size, Z. 
     
     
         70 . The wireless transmitter of  claim 69 , wherein when TBS0 plus a number of CRC bits attached to the transport block is greater than the threshold size, Z, the formula includes dividing TBS0+L2 by C, rounding up to the nearest integer, and multiplying the result by C. 
     
     
         71 . The wireless transmitter of  claim 69 , wherein when TBS0 plus a number of CRC bits attached to the transport block is greater than the threshold size, Z, the formula includes dividing TBS0+L2 by C*A, rounding up to the nearest integer, and multiplying the result by C*A, where A is a constant. 
     
     
         72 . The wireless transmitter of  claim 69 , wherein when TBS0 plus a number of CRC bits attached to the transport block is less than the threshold size, Z, the formula includes calculating A*ceil(TBS0/A) for a constant A, wherein A is one of 1 and 8. 
     
     
         73 . The wireless transmitter of  claim 69 , wherein the formula includes determining C based on dividing TBS0 plus L2 by Z minus L3, and rounding up to the nearest integer. 
     
     
         74 . A method for use in a wireless transmitter, the method comprising:
 determining a transport block size, TBS, for a transport block to be communicated between the wireless transmitter and a wireless receiver via a physical channel transmission, the TBS determination using a formula accounting for cyclic redundancy check, CRC, bits wherein the formula is based on an approximate transport block size not accounting for CRC bits; and   transmitting the transport block according to the determined TBS.   
     
     
         75 . The method of  claim 74 , wherein the formula is based on an approximate transport block size, TBS0, a number of code blocks, C, at least one of a number of CRC bits attached to the transport block, L2, and a number of CRC bits added to each of the C code blocks, L3. 
     
     
         76 . The method of  claim 75 , wherein the formula is based on a comparison of TBS0 plus a number of CRC bits attached to the transport block with a threshold size, Z. 
     
     
         77 . The method of  claim 76 , wherein when TBS0 plus a number of CRC bits attached to the transport block is greater than the threshold size, Z, the formula includes dividing TBS0+L2 by C, rounding up to the nearest integer, and multiplying the result by C. 
     
     
         78 . The method of  claim 75 , wherein when TBS0 plus a number of CRC bits attached to the transport block is greater than the threshold size, Z, the formula includes dividing TBS0+L2 by C*A, rounding up to the nearest integer, and multiplying the result by C*A, where A is a constant. 
     
     
         79 . The method of  claim 76 , wherein when TBS0 plus a number of CRC bits attached to the transport block is less than the threshold size, Z, the formula includes calculating A*ceil(TBS0/A) for a constant A, wherein A is one of 1 and 8. 
     
     
         80 . The method of  claim 76 , wherein the formula includes determining C based on dividing TBS0 plus L2 by Z minus L3, and rounding up to the nearest integer. 
     
     
         81 . A wireless receiver comprising processing circuitry operable to:
 receive a wireless signal via a physical channel transmission from a wireless transmitter, the wireless signal corresponding to a transport block;   determine a transport block size, TBS, using a formula accounting for cyclic redundancy check, CRC, bits wherein the formula is based on an approximate transport block size not accounting for CRC bits; and   decode the wireless signal to obtain the transport block.   
     
     
         82 . The wireless receiver of  claim 81 , wherein the formula is based on an approximate transport block size, TBS0, a number of code blocks, C, at least one of a number of CRC bits attached to the transport block, L2, and a number of CRC bits added to each of the C code blocks, L3. 
     
     
         83 . The wireless receiver of  claim 82 , wherein the formula is based on a comparison of TBS0 plus a number of CRC bits attached to the transport block with a threshold size, Z. 
     
     
         84 . The wireless receiver of  claim 83 , wherein when TBS0 plus a number of CRC bits attached to the transport block is greater than the threshold size, Z, the formula includes dividing TBS0+L2 by C, rounding up to the nearest integer, and multiplying the result by C. 
     
     
         85 . The wireless receiver of  claim 83 , wherein when TBS0 plus a number of CRC bits attached to the transport block is greater than the threshold size, Z, the formula includes dividing TBS0+L2 by C*A, rounding up to the nearest integer, and multiplying the result by C*A, where A is a constant 
     
     
         86 . The wireless receiver of  claim 83 , wherein the formula includes determining C based on dividing TBS0 plus L2 by Z minus L3, and rounding up to the nearest integer. 
     
     
         87 . The wireless receiver of  claim 83 , wherein when TBS0 plus a number of CRC bits attached to the transport block is less than the threshold size, Z, the formula includes calculating A*ceil(TBS0/A) for a constant A, wherein A is one of 1 and 8. 
     
     
         88 . A method for use in a wireless receiver, the method comprising:
 receiving a wireless signal via a physical channel transmission from a wireless transmitter, the wireless signal corresponding to a transport block;   determining a transport block size, TBS, using a formula accounting for cyclic redundancy check, CRC, bits wherein the formula is based on an approximate transport block size not accounting for CRC bits; and   decoding the wireless signal to obtain the transport block.   
     
     
         89 . The method of  claim 88 , wherein the formula is based on an approximate transport block size, TBS0, a number of code blocks, C, at least one of a number of CRC bits attached to the transport block, L2, and a number of CRC bits added to each of the C code blocks, L3. 
     
     
         90 . The method of  claim 89 , wherein the formula is based on a comparison of TBS0 plus a number of CRC bits attached to the transport block with a threshold size, Z. 
     
     
         91 . The method of  claim 90 , wherein when TBS0 plus a number of CRC bits attached to the transport block is greater than the threshold size, Z, the formula includes dividing TBS0+L2 by C, rounding up to the nearest integer, and multiplying the result by C. 
     
     
         92 . The method of  claim 90 , wherein when TBS0 plus a number of CRC bits attached to the transport block is greater than the threshold size, Z, the formula includes dividing TBS0+L2 by C*A, rounding up to the nearest integer, and multiplying the result by C*A, where A is a constant 
     
     
         93 . The method of  claim 90 , wherein the formula includes determining C based on dividing TBS0 plus L2 by Z minus L3, and rounding up to the nearest integer. 
     
     
         94 . The method of  claim 90 , wherein when TBS0 plus a number of CRC bits attached to the transport block is less than the threshold size, Z, the formula includes calculating A*ceil(TBS0/A) for a constant A, wherein A is one of 1 and 8.

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