Scheduling grant information signaling in wireless communication system
View Patent ↗A wireless communication infrastructure entity including a transceiver coupled to a controller configured to generate parity bits based on scheduling grant information and to encode the parity bits based on additional scheduling grant information not used to generate the parity bits, wherein the encoded parity bits are combined with the scheduling grant information. The additional scheduling grant information may be transport block size or redundancy version information.
1. A wireless communication infrastructure entity, the entity comprising:
a transceiver;
a controller communicably coupled to the transceiver,
the controller configured to encode a downlink system information block message and to select a portion of the encoded message for transmission in a sub-frame of a system information window,
each sub-frame of the system information window having a corresponding sub-frame number in the system information window,
the selection of the portion of the encoded message based on a redundancy version (RV) indicator, wherein the RV indicator is selected as follows:
sub-frame number modulo 4=0 is mapped to RV 0 ;
sub-frame number modulo 4=1 is mapped to RV 2 ;
sub-frame number modulo 4=2 is mapped to RV 3 ; and
sub-frame number modulo 4=3 is mapped to RV 1 .
2. The entity of claim 1 , the sub-frame in which the selected portion of the encoded message to be transmitted is associated with not more than one RV indicator selected from a group of distinct redundancy versions.
3. A wireless user terminal, the terminal comprising:
a transceiver;
a controller communicably coupled to the transceiver,
the controller configured to determine a redundancy version (RV) based on a sub-frame number in a system information window as follows:
sub-frame number modulo 4=0 is mapped to RV 0 ;
sub-frame number modulo 4=1 is mapped to RV 2 ;
sub-frame number modulo 4=2 is mapped to RV 3 ; and
sub-frame number modulo 4=3 is mapped to RV 1 ,
the sub-frame number corresponding to a sub-frame on which a first portion of an encoded system information block message was received by the transceiver, and
the controller configured to decode the encoded system information block message based on the RV.
4. The terminal of claim 3 , the sub-frame in which the first portion of the encoded message received is associated with not more than one RV selected from a group of distinct redundancy versions.
5. A method in a wireless user terminal, the method comprising:
receiving, at the terminal, a scheduling assignment in a sub-frame, the scheduling assignment allocating time frequency resources for a portion of an encoded system information block message;
receiving, at the terminal, the portion of the encoded system information block message in the sub-frame based on the scheduling assignment;
determining a redundancy version (RV) of the portion of the encoded system information block message based on a system frame number as follows:
system frame number modulo 8=0 is mapped to RV 0 ;
system frame number modulo 8=2 is mapped to RV 2 ;
system frame number modulo 8=4 is mapped to RV 3 ; and
system frame number modulo 8=6 is mapped to RV 1 ,
the system frame number corresponding to the sub-frame in which the portion of the encoded system information block message was received; and
decoding the encoded system information block message based on the portion of the encoded system information block message received and based on the RV.
6. The method of claim 5 , receiving the scheduling assignment includes receiving a 3GPP LTE DCI Format 1C scheduling assignment.
7. The method of claim 5 , receiving the scheduling assignment includes receiving the scheduling assignment with cyclic redundancy check (CRC) bits scrambled with a System Information-Radio Network Temporary Identifier (SI-RNTI).
8. The method of claim 5 , receiving the scheduling assignment includes receiving a 5-bit transport block size (TBS) field for indicating a transport block size.
9. A method in a wireless user terminal, the method comprising:
receiving, at the terminal, a scheduling assignment in a sub-frame, the scheduling assignment allocating time frequency resources for a portion of an encoded system information block message;
receiving, at the terminal, the portion of the encoded system information block message in the sub-frame based on the scheduling assignment;
determining a redundancy version (RV) of the portion of the encoded system information block message based on a sub-frame number in a system information window as follows:
sub-frame number modulo 4=0 is mapped to RV 0 ;
sub-frame number modulo 4=1 is mapped to RV 2 ;
sub-frame number modulo 4=2 is mapped to RV 3 ; and
sub-frame number modulo 4=3 is mapped to RV 1 ,
the sub-frame number corresponding to the sub-frame in which the portion of the encoded system information block message was received; and
decoding the encoded system information block message based on the portion of the encoded system information block message received and based on the redundancy version.
10. The method of claim 9 , receiving the scheduling assignment includes receiving a 3GPP LTE DCI Format 1C scheduling assignment.
11. The method of claim 9 , receiving the scheduling assignment includes receiving the scheduling assignment with cyclic redundancy check (CRC) bits scrambled with a System Information-Radio Network Temporary Identifier (SI-RNTI).
12. The method of claim 9 , receiving the scheduling assignment includes receiving a 5-bit transport block size (TBS) field for indicating a transport block size.