Method of re-ordering received data blocks in hybrid automatic repeat request telecommunication system
View Patent ↗A method of transmitting data blocks between a user equipment and a station using parallel hybrid automatic repeat request processes. The station includes a scheduler that signals to the user equipment allocations of resources and parameters for transmission and re-transmission of the data blocks, and a set of reception buffers that receive and re-order the data blocks. The scheduler assigns a reception index to the corresponding scheduled reception and assigns reception buffers to received data blocks as a function of the assigned reception indexes identifying time slots scheduled for reception. A newly transmitted data block received in its scheduled time slot is assigned to the reception buffer corresponding to a new reception index. A re-transmitted data block received in a time slot later than its originally scheduled time slot is assigned to the reception buffer corresponding to a same reception index as its originally scheduled reception.
1. A telecommunication station for telecommunication with a user equipment using parallel hybrid automatic repeat request processes, the telecommunication station comprising:
a scheduler for signaling to said user equipment allocations of resources and parameters for transmission and re-transmission of data blocks; and
a set of reception buffers for receiving and re-ordering said data blocks from said user equipment, wherein said scheduler assigns a reception index to each data block of said data blocks to be transmitted by said user equipment, and
wherein said scheduler assigns reception buffers from said set of reception buffers to received data blocks as a function of the assigned reception indexes identifying time slots scheduled for reception, wherein said scheduler detects and schedules re-transmission of missing Radio Link Control Packet Data Units within said data blocks after said hybrid automatic repeat request processes, said scheduler also scheduling said re-transmission of missing Radio Link Control Packet Data Units as segments in respective re-transmitted data blocks, said segments being assigned on reception to a buffer corresponding to a same reception index as the scheduled reception of the data block scheduled to contain that missing Radio Link Control Packet Data Unit, so that a data block newly transmitted by said user equipment and received in its scheduled time slot is assigned to a reception buffer corresponding to a new reception index, and a data block re-transmitted by said user equipment and received in a time slot later than its originally scheduled time slot is assigned to a reception buffer corresponding to the same reception index as its originally scheduled reception.
2. The telecommunication station of claim 1 , wherein said data blocks to which said scheduler assigns a reception index and a reception buffer of said set of reception buffers are Media Access Control Packet Data Units.
3. The telecommunication station of claim 1 , wherein said scheduler establishes and transmits to said user equipment in a status message an information list containing sequence numbers of the missing Radio Link Control Packet Data Units and if applicable start and end offsets, and includes instructions for segmentation and insertion of the segments in said data blocks.
4. The telecommunication station of claim 1 , wherein said scheduler detects and establishes Radio Link Control Packet Data Unit dynamic blocks for a missing segment containing an identification of a received data block with a re-transmitted segment, an offset of a received segment, parameters of the missing segment to be re-transmitted and an identification of a next segment or data block to which the missing segment should link.
5. The telecommunication station of claim 1 , wherein said telecommunication station complies with the Long Term Evolution (‘LTE’) standard or the Long Term Evolution-Advanced (‘LTE-Advanced’) standard.
6. A telecommunication system including a user equipment and a station for telecommunication with said user equipment using parallel hybrid automatic repeat request processes, said station comprising:
a scheduler for signaling to said user equipment allocations of resources and parameters for transmission and re-transmission of data blocks; and
a set of reception buffers for receiving and re-ordering said data blocks from said user equipment,
wherein said scheduler assigns a reception index to each data block of said data blocks to be transmitted by said user equipment, and
wherein said scheduler assigns reception buffers from said set of reception buffers to received data blocks as a function of the assigned reception indexes identifying time slots scheduled for reception, wherein said scheduler detects and schedules re-transmission of missing Radio Link Control Packet Data Units within said data blocks after said hybrid automatic repeat request processes, and wherein said scheduler schedules said re-transmission of missing Radio Link Control Packet Data Units as segments in respective re-transmitted data blocks, said segments being assigned on reception to a buffer corresponding to a same reception index as the scheduled reception of the data block scheduled to contain that missing Radio Link Control Packet Data Unit, so that a data block newly transmitted by said user equipment and received in its scheduled time slot is assigned to the reception buffer corresponding to a new reception index, and a data block re-transmitted by said user equipment and received in a time slot later than its originally scheduled time slot is assigned to a buffer corresponding to the same reception index as its originally scheduled reception.
7. The telecommunication system of claim 6 , wherein said data blocks to which said scheduler assigns a reception index and a reception buffer of said set of reception buffers are Media Access Control Packet Data Units.
8. The telecommunication system of claim 6 , wherein said scheduler establishes and transmits to said user equipment in a status message an information list containing sequence numbers of the missing Radio Link Control Packet Data Units and if applicable start and end offsets, and includes instructions for segmentation and insertion of the segments in said data blocks.
9. The telecommunication system of claim 6 , wherein said scheduler detects and establishes Radio Link Control Packet Data Unit dynamic blocks for a missing segment containing an identification of a received data block with a re-transmitted segment, an offset of a received segment, parameters of the missing segment to be re-transmitted and an identification of a next segment or data block to which the missing segment should link.
10. The telecommunication system of claim 6 , wherein said telecommunication system complies with the Long Term Evolution (‘LTE’) standard or the Long Term Evolution-Advanced (‘LTE-Advanced’) standard.
11. A method of telecommunication between a user equipment and a station using parallel hybrid automatic repeat request processes, said station comprising a scheduler signaling to said user equipment allocations of resources and parameters for transmission and re-transmission of data blocks and a set of reception buffers for receiving and re-ordering said data blocks from said user equipment, the method comprising:
said scheduler assigning a reception index to each data block of said data blocks to be transmitted by said user equipment; and
said scheduler assigning reception buffers from said set of reception buffers to received data blocks as a function of the assigned reception indexes identifying time slots scheduled for reception, wherein said scheduler detects and schedules re-transmission of missing Radio Link Control Packet Data Units within said data blocks after said hybrid automatic repeat request processes, said scheduler being capable of scheduling said re-transmission of missing Radio Link Control Packet Data Units as segments in respective re-transmitted data blocks, said segments being assigned on reception to a buffer corresponding to a same reception index as the scheduled reception of the data block scheduled to contain that missing Radio Link Control Packet Data Unit, so that a data block newly transmitted by said user equipment and received in its scheduled time slot is assigned to the reception buffer corresponding to a new reception index, whereas a data block re-transmitted by said user equipment and received in a time slot later than its originally scheduled time slot is assigned to the reception buffer corresponding to the same reception index as its originally scheduled reception.
12. The telecommunication method of claim 11 , wherein said data blocks to which said scheduler assigns a reception index and a reception buffer of said set of reception buffers are Media Access Control Packet Data Units.
13. The telecommunication method of claim 11 , wherein said scheduler establishes and transmits to said user equipment in a status message an information list containing sequence numbers of the missing Radio Link Control Packet Data Units and if applicable start and end offsets, and includes instructions for segmentation and insertion of the segments in said data blocks.
14. The telecommunication method of claim 11 , wherein said scheduler detects and establishes Radio Link Control Packet Data Unit dynamic blocks for a missing segment containing an identification of a received data block with a re-transmitted segment, an offset of a received segment, parameters of the missing segment to be re-transmitted and an identification of a next segment or data block to which the missing segment should link.
15. The telecommunication method of claim 11 , wherein said station operates in accordance with the Long Term Evolution (‘LTE’) standard or the Long Term Evolution-Advanced (‘LTE-Advanced’) standard.