Transport block set segmentation

Abstract

Data of a transport block set is to be transmitted in a wireless communication system. Segmentation information for potential segmentation of the data is provided. The data is transmitted with a first specified modulation and coding scheme. The data is received and it is determined whether the received data meets a specified quality. When the specified quality is not met, a repeat request is transmitted. The first specified modulation and coding set is changed to a second specified modulation and coding set. In response to the repeat request, the data is segmented into a plurality of segments supported by the second specified modulation and coding set in accordance with the provided segmentation information. The segments are transmitted and at least two of the segments are transmitted separately.

What is claimed: 
     
         1 . A method, comprising:
 receiving a repeat request message requesting retransmission of a block of data;   segmenting the block into a plurality of segments subsequent to receiving the repeat request message;   determining, for each of the plurality of segments, segmentation information; and   transmitting the plurality of segments and the segmentation information.   
     
     
         2 . The method of  claim 1 , wherein the segmentation information indicates a relative position within the data block. 
     
     
         3 . The method of  claim 1 , wherein the segmentation information is determined subsequent to the receiving of the repeat request message. 
     
     
         4 . The method of  claim 1 , further comprising transmitting the block of data with a first specified modulation and coding scheme and a specified sequence number 
     
     
         5 . The method of  claim 4 , further comprising changing the specified modulation and coding scheme to a second specified modulation and coding scheme, subsequent to the receiving of the repeat request message. 
     
     
         6 . The method of  claim 5 , further comprising transmitting the plurality of segments according to the second specified modulation and coding scheme. 
     
     
         7 . The method of  claim 1 , wherein the transmitting the block of data uses a first plurality of subcarriers in a first transmission time interval (TTI). 
     
     
         8 . The method of  claim 7 , wherein the transmitting the plurality of segments occurs in a second TTI. 
     
     
         9 . The method of  claim 7 , wherein the transmitting the plurality of segments uses a different number of subcarriers than the transmitting the block of data. 
     
     
         10 . The method of  claim 1 , wherein the determining segmentation information comprises determining, for each of the plurality of segments, respective segmentation information. 
     
     
         11 . The method of  claim 10 , further comprising appending the respective segmentation information to each of the plurality of data segments. 
     
     
         12 . The method of  claim 10 , further comprising appending the respective segmentation information to a respective header of each of the plurality of data segments. 
     
     
         13 . The method of  claim 1 , wherein each of the plurality of data segments includes a sequence number and respective segmentation information. 
     
     
         14 . The method of  claim 1 , further comprising, retransmitting a failed segment if a segment transmission fails. 
     
     
         15 . The method of  claim 1 , wherein the repeat request message indicates that the block of data failed a quality test. 
     
     
         16 . A device, comprising:
 a segmentation device configured to segment a first data block into a plurality of data segments subsequent to receiving the repeat request message, and to append, to each of the plurality of data segments, segmentation information.   
     
     
         17 . The device of  claim 16 , wherein the segmentation information indicates a relative position within the first data block. 
     
     
         18 . The device of  claim 16 , wherein the segmentation device is configured to determine the additional segmentation information subsequent to the Hybrid Automatic Repeat reQuest (HARQ) message requesting retransmission of the first data block. 
     
     
         19 . A transmitter device comprising a processor configured to:
 receive a repeat request message requesting retransmission of a block of data;   segment the block into a plurality of segments subsequent to receiving the repeat request message;   append, to each of the plurality of segments, segmentation information; and   transmit the plurality of segments.   
     
     
         20 . A method implemented in a user equipment or a base station, the method comprising:
 transmitting a first data block having a sequence number using a first modulation and coding scheme utilizing a first plurality of orthogonal frequency division multiplexing (OFDM) subcarriers, the first modulation and coding scheme comprising a first modulation type and a first coding rate;   segmenting the first data block into a plurality of data segments;   appending additional segmentation information that comprises a plurality of segment identifiers (SIDs) that indicate a manner of segmentation of the first data block, wherein an SID is assigned to each of the plurality of data segments, wherein the additional segmentation information is determined subsequent to a Hybrid Automatic Repeat reQuest (HARQ) message requesting retransmission of data in the first data block; and   transmitting the segments with the plurality of SIDs using the second modulation and coding scheme utilizing a second plurality of OFDM subcarriers, the second modulation and coding scheme comprising a second modulation type and a second coding rate, wherein the first plurality of OFDM subcarriers is different than the second plurality of OFDM subcarriers, the first modulation type is different than the second modulation type, and the first coding rate is different than the second coding rate.