Determination of sub-band allocation parameters for wireless networks

Abstract

A technique includes receiving an uplink grant that indicates a size (M) of uplink resources allocated to the user device sub-band precoder indications; determining a set of uplink sub-band allocation parameters, including at least: a total number of bits (N) for sub-band precoder indications (where N remains constant for different values of M); a number of bits (m) per each of the sub-band precoder indications; and a sub-band size (J) for each of the one or more sub-bands; wherein at least one of the number of bits (m) per sub-band precoder indication and the sub-band size (J) for each of the one or more sub-bands changes or is a different value based on different sizes (M) of uplink resources; decoding each of the one or more sub-band precoder indications; and precoding, based on the one or more sub-band precoder indications, data for transmission via the one or more sub-bands.

What is claimed is: 
     
         1 . A method comprising:
 receiving, by a user device from a base station in a wireless network, downlink control information including at least an uplink grant that indicates at least a size (M) of uplink resources allocated to the user device and one or more sub-band precoder indications for one or more corresponding sub-bands within the uplink resources allocated to the user device, wherein each of the one or more sub-bands comprises one or more uplink resources;   determining a set of uplink sub-band allocation parameters, including at least:
 a total number of bits (N) in the downlink control information for the one or more sub-band precoder indications, wherein the total number of bits (N) for the one or more sub-band precoder indications is the same for a plurality of different sizes (M) of uplink resources allocated to the user device; 
 a number of bits (m) per each of the sub-band precoder indications; and 
 a sub-band size (J) for each of the one or more sub-bands; 
 wherein at least one of the number of bits (m) per sub-band precoder indication and the sub-band size (J) for each of the one or more sub-bands changes or is a different value based on different sizes (M) of uplink resources allocated to the user device; 
   decoding the downlink control information and extracting, based on at least a portion of the set of uplink sub-band allocation parameters, a number of sub-bands (K) and each of the one or more sub-band precoder indications; and   precoding, based on the one or more sub-band precoder indications, data for transmission via the one or more sub-bands.   
     
     
         2 . The method of  claim 1  wherein the sub-band size for at least one of the one or more sub-bands within the uplink resources allocated to the user device is different from the sub-band size for the other sub-bands within the uplink resources allocated to the user device. 
     
     
         3 . The method of  claim 1  and further comprising:
 transmitting, by the user device, the precoded data via the one or more sub-bands of the uplink resources allocated to the user device. 
 
     
     
         4 . The method of  claim 1  wherein the determining a set of uplink sub-band allocation parameters comprises:
 determining, by the user device, a set of uplink sub-band allocation parameters based on at least one of the following: 
 a table lookup based on the size (M) of uplink resources allocated to the user device; and 
 a formula that indicates a set of uplink sub-band allocation parameters depending on the size (M) of uplink resources allocated to the user device. 
 
     
     
         5 . The method of  claim 1  wherein the determining a set of uplink sub-band allocation parameters comprises:
 determining the total number of bits (N) in the downlink control information for the one or more sub-band precoder indications based on one of the following:
 the user device being previously configured with the total number of bits (N) in the downlink control information for the one or more sub-band precoder indications; and 
 receiving, by the user device, a control message from the base station indicating the total number of bits (N) in the downlink control information for the one or more sub-band precoder indications. 
 
 
     
     
         6 . The method of  claim 1  wherein the determining a set of uplink sub-band allocation parameters comprises determining a number of sub-bands (K) based on one of the following:
 the user device being previously configured with the number of sub-bands (K); and 
 receiving, by the user device, a control message from the base station indicating the number of sub-bands (K). 
 
     
     
         7 . The method of  claim 6  wherein the determining the sub-band size for each of the one or more sub-bands comprises one of the following:
 determining, by the user device, the same sub-band size (J) for each of the one or more sub-bands based on a formula depending on the number of sub-bands (K); and 
 determining, by the user device, the sub-band size for each of the one or more sub-bands based on at least:
 determining, by the user device, the sub-band size for at least one of the first and last sub-bands within the uplink resources allocated to the user device based on previous configuration;
 determining, by the user device, the same sub-band size for each of the remaining sub-bands within the uplink resources allocated to the user device based on a formula depending on the number of sub-bands (K). 
 
 
 
     
     
         8 . The method of  claim 1  wherein:
 the sub-band size (J) for each of the one or more sub-bands is different for a plurality of different sizes (M) of uplink resources allocated to the user device; 
 a number of sub-bands (K) is a same value for different sizes (M) of uplink resources allocated to the user device; and 
 the number of bits (m) per each of the sub-band precoder indications is a same value for different sizes (M) of uplink resources allocated to the user device. 
 
     
     
         9 . The method of  claim 1  wherein:
 the sub-band size (J) for each of the one or more sub-bands is a same value for different sizes (M) of uplink resources allocated to the user device; 
 a number of sub-bands (K) is different for a plurality of different sizes (M) of uplink resources allocated to the user device; and 
 the number of bits (m) per each of the sub-band precoder indications is different for a plurality of different sizes (M) of uplink resources allocated to the user device. 
 
     
     
         10 . The method of  claim 1  wherein:
 the sub-band size (J) for each of the one or more sub-bands is different for a plurality of different sizes (M) of uplink resources allocated to the user device; 
 a number of sub-bands (K) is different for a plurality of different sizes (M) of uplink resources allocated to the user device; and 
 the number of bits (m) per each of the sub-band precoder indications is different for a plurality of different sizes (M) of uplink resources allocated to the user device. 
 
     
     
         11 . The method of  claim 1  wherein the downlink control information is provided to the user device via a single-step downlink configuration. 
     
     
         12 . An apparatus comprising at least one processor and at least one memory including computer instructions that, when executed by the at least one processor, cause the apparatus to perform a method of  claim 1 . 
     
     
         13 . A method comprising:
 receiving, by a user device from a base station in a wireless network, downlink control information including at least an uplink grant that indicates at least a size (M) of uplink resources allocated to the user device and one or more sub-band precoder indications for one or more corresponding sub-bands within the uplink resources allocated to the user device, wherein each of the one or more sub-bands comprises one or more uplink resources;   determining a set of uplink sub-band allocation parameters, including at least:
 a total number of bits (N) in the downlink control information for the one or more sub-band precoder indications, wherein the total number of bits (N) for the one or more sub-band precoder indications is the same for different sizes (M) of uplink resources allocated to the user device; and 
 a sub-band size (J) for each of the one or more sub-bands; 
 wherein the sub-band size (J) for each of the one or more sub-bands changes or is a different value based on different sizes (M) of uplink resources allocated to the user device; 
   decoding the downlink control information and extracting, based on at least a portion of the set of uplink sub-band allocation parameters, a number of sub-bands (K), a number of bits (m) per each of the sub-band precoder indications and each of the one or more sub-band precoder indications; and   precoding, based on the one or more sub-band precoder indications, data for transmission via the one or more sub-bands.   
     
     
         14 . The method of  claim 13  wherein the sub-band size for at least one of the one or more sub-bands within the uplink resources allocated to the user device is different from the sub-band size for the other sub-bands within the uplink resources allocated to the user device. 
     
     
         15 . The method of  claim 13  wherein:
 a number of sub-bands (K) is a same value for different sizes (M) of uplink resources allocated to the user device; and 
 the number of bits (m) per each of the sub-band precoder indications is a same value for different sizes (M) of uplink resources allocated to the user device. 
 
     
     
         16 . The method of  claim 13  and further comprising:
 transmitting, by the user device, the precoded data via the one or more sub-bands of the uplink resources allocated to the user device. 
 
     
     
         17 . The method of  claim 13  wherein the determining a set of uplink sub-band allocation parameters comprises:
 determining, by the user device, a set of uplink sub-band allocation parameters based on at least one of the following: 
 a table lookup based on the size (M) of uplink resources allocated to the user device; and 
 a formula that indicates a set of uplink sub-band allocation parameters depending on the size (M) of uplink resources allocated to the user device. 
 
     
     
         18 . An apparatus comprising at least one processor and at least one memory including computer instructions that, when executed by the at least one processor, cause the apparatus to perform a method of  claim 13 . 
     
     
         19 . An apparatus comprising a computer program product including a non-transitory computer-readable storage medium and storing executable code that, when executed by at least one data processing apparatus, is configured to cause the at least one data processing apparatus to perform a method of  claim 13 . 
     
     
         20 . A method comprising:
 receiving, by a user device from a base station in a wireless network, downlink control information including at least an uplink grant that indicates at least a size (M) of uplink resources allocated to the user device and one or more sub-band precoder indications for one or more corresponding sub-bands within the uplink resources allocated to the user device, wherein each of the one or more sub-bands comprises one or more uplink resources;   determining a set of uplink sub-band allocation parameters, including at least:
 a total number of bits (N) in the downlink control information for the one or more sub-band precoder indications, wherein the total number of bits (N) for the one or more sub-band precoder indications is the same for different sizes (M) of uplink resources allocated to the user device; and 
 a number of bits (m) per each of the sub-band precoder indications; 
 wherein the number of bits (m) per each of the sub-band precoder indications changes or is a different value based on different sizes (M) of uplink resources allocated to the user device; 
   decoding the downlink control information and extracting, based on at least a portion of the set of uplink sub-band allocation parameters, a number of sub-bands (K) and each of the one or more sub-band precoder indications; and   precoding, based on the one or more sub-band precoder indications, data for transmission via the one or more sub-bands.   
     
     
         21 . The method of  claim 20  wherein:
 the sub-band size (J) for each of the one or more sub-bands is a same value for different sizes (M) of uplink resources allocated to the user device; and 
 a number of sub-bands (K) is different for a plurality of different sizes (M) of uplink resources allocated to the user device. 
 
     
     
         22 . An apparatus comprising at least one processor and at least one memory including computer instructions that, when executed by the at least one processor, cause the apparatus to perform a method of  claim 20 . 
     
     
         23 . An apparatus comprising a computer program product including a non-transitory computer-readable storage medium and storing executable code that, when executed by at least one data processing apparatus, is configured to cause the at least one data processing apparatus to perform a method of  claim 20 . 
     
     
         24 . A method comprising:
 receiving, by a user device from a base station in a wireless network, downlink control information including at least an uplink grant that indicates at least a size (M) of uplink resources allocated to the user device and one or more sub-band precoder indications for one or more corresponding sub-bands within the uplink resources allocated to the user device, wherein each of the one or more sub-bands comprises one or more uplink resources;   determining a set of uplink sub-band allocation parameters, including at least:
 a total number of bits (N) in the downlink control information for the one or more sub-band precoder indications, wherein the total number of bits (N) for the one or more sub-band precoder indications is the same for different sizes (M) of uplink resources allocated to the user device; and 
 a number of sub-bands (K); 
 wherein the number of sub-bands (K) changes or is a different value based on different sizes (M) of uplink resources allocated to the user device; 
   decoding the downlink control information and extracting, based on at least a portion of the set of uplink sub-band allocation parameters, a number of bits (m) per each of the sub-band precoder indications and each of the one or more sub-band precoder indications; and   precoding, based on the one or more sub-band precoder indications, data for transmission via the one or more sub-bands.   
     
     
         25 . The method of  claim 24  wherein:
 the sub-band size (J) for each of the one or more sub-bands is a same value for different sizes (M) of uplink resources allocated to the user device; and 
 a number of bits (m) per each of the sub-band precoder indications is different for a plurality of different sizes (M) of uplink resources allocated to the user device.