Method and arrangement in a telecommunication system
First Claim
1. A method for processing scheduling information in a cellular communication system, the method comprising:
- receiving, at a user equipment (UE), a scheduling message indicating an allocation of transmission resources for an uplink or downlink transmission associated with a first Hybrid Automatic Repeat reQuest (HARQ) process of the UE; and
if the scheduling message is addressed to an identifier that is associated with dynamic scheduling for the UE and a most recent previous transmission for the first HARQ process occurred on a semi-persistent scheduled resource;
interpreting, by a processor, the scheduling message as scheduling a new data transmission regardless of a value of a new data indicator (NDI) flag in the scheduling message; and
receiving or transmitting a new data transmission for the first HARQ process in accordance with the scheduling message.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention relates to a method in a cellular communication system, for avoiding errors in a HARQ process, wherein an NDI flag is used both for indicating either semi-persistent scheduling, SPS activation or SPS retransmissions, and also for indicating, by toggling of the flag, a new transmission in dynamic scheduling mode. The method comprises the steps of receiving, in a scheduling message, an indication that dynamically scheduled transmission will take place; if a semi persistent resource has occurred for the same HARQ process since a previously received indication for dynamically scheduled transmission, then considering the NDI flag to be toggled regardless of the value of the NDI flag. Thus, if the condition is fulfilled, a UE will always regard the NDI flag as indicating or requesting a new data transmission.
-
Citations
34 Claims
-
1. A method for processing scheduling information in a cellular communication system, the method comprising:
-
receiving, at a user equipment (UE), a scheduling message indicating an allocation of transmission resources for an uplink or downlink transmission associated with a first Hybrid Automatic Repeat reQuest (HARQ) process of the UE; and if the scheduling message is addressed to an identifier that is associated with dynamic scheduling for the UE and a most recent previous transmission for the first HARQ process occurred on a semi-persistent scheduled resource; interpreting, by a processor, the scheduling message as scheduling a new data transmission regardless of a value of a new data indicator (NDI) flag in the scheduling message; and receiving or transmitting a new data transmission for the first HARQ process in accordance with the scheduling message. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method for processing scheduling information in a cellular communication system, the method comprising:
-
receiving, at a user equipment (UE), uplink grants for dynamically-scheduled transmissions for a first Hybrid Automatic Repeat reQuest (HARQ) process, wherein each of the uplink grants includes a new data indicator (NDI) flag; when a most recent previous transmission for the first HARQ process occurred on a dynamically-scheduled resource, determining, by a processor, whether any uplink grant received for a dynamically-scheduled transmission for the first HARQ process relates to a new transmission or a re-transmission based on whether a respective value of the NDI flag for that uplink grant has been toggled; when the most recent previous transmission for the first HARQ process occurred on a semi-persistent scheduling (SPS) resource, determining, by a processor, that any uplink grant received for a dynamically-scheduled transmission for the first HARQ process relates to a new transmission regardless of the value of the NDI flag for that uplink grant; and transmitting either a new transmission or a re-transmission in accordance with each uplink grant. - View Dependent Claims (9, 10, 11, 12)
-
-
13. A method for processing scheduling information in a cellular communication system, the method comprising:
-
receiving, at a user equipment (UE), downlink assignments for dynamically-scheduled transmissions for a first Hybrid Automatic Repeat reQuest (HARQ) process, wherein each of the downlink assignments includes a new data indicator (NDI) flag; when a most recent previous transmission for the first HARQ process occurred on a dynamically-scheduled resource, determining, by a processor, whether any downlink assignments received for a dynamically-scheduled transmission for the first HARQ process relates to a new transmission or a re-transmission based on whether a respective value of the NDI flag for that downlink assignment has been toggled; when the most recent previous transmission for the first HARQ process occurred on a semi-persistent scheduling (SPS) resource, determining, by a processor, that any downlink assignment received for a dynamically-scheduled transmission for the first HARQ process relates to a new transmission regardless of the value of the NDI flag for that downlink assignment; and receiving either a new transmission or a re-transmission in accordance with each downlink assignment. - View Dependent Claims (14, 15, 16, 17)
-
-
18. A mobile communication apparatus, the apparatus comprising:
-
a transceiver configured to receive a scheduling message indicating an allocation of transmission resources for an uplink or downlink transmission associated with a first Hybrid Automatic Repeat reQuest (HARQ) process of the mobile communication apparatus; and a processor configured to; if the scheduling message is addressed to an identifier that is associated with dynamic scheduling and a most recent previous transmission for the first HARQ process occurred on a semi-persistent scheduled resource; interpret the scheduling message as scheduling a new data transmission regardless of a value of a new data indicator (NDI) flag in the scheduling message, and wherein the transceiver is further configured to receive or transmit a new data transmission for the first HARQ process in accordance with the scheduling message. - View Dependent Claims (19, 20, 21, 22, 23, 24)
-
-
25. A mobile communication apparatus, the mobile communication apparatus comprising:
-
a transceiver configured to receive uplink grants for dynamically-scheduled transmissions for a first Hybrid Automatic Repeat reQuest (HARQ) process, wherein each of the uplink grants includes a new data indicator (NDI) flag; and a processor configured to; when a most recent previous transmission for the first HARQ process occurred on a dynamically-scheduled resource, determine whether any uplink grant received for a dynamically-scheduled transmission for the first HARQ process relates to a new transmission or a re-transmission based on whether a respective value of the NDI flag for that uplink grant has been toggled; when the most recent previous transmission for the first HARQ process occurred on a semi-persistent scheduling (SPS) resource, determine that any uplink grant received for a dynamically-scheduled transmission for the first HARQ process relates to a new transmission regardless of the value of the NDI flag for that uplink grant; and wherein the transceiver is further configured to transmit either a new transmission or a re-transmission in accordance with each uplink grant. - View Dependent Claims (26, 27, 28, 29)
-
-
30. A mobile communication apparatus for processing scheduling information in a cellular communication system, the mobile communication apparatus comprising:
-
a transceiver configured to receive downlink assignments for dynamically-scheduled transmissions for a first Hybrid Automatic Repeat reQuest (HARQ) process, wherein each of the downlink assignments includes a new data indicator (NDI) flag; and a processor configured to; when a most recent previous transmission for the first HARQ process occurred on a dynamically-scheduled resource, determine whether any downlink assignments received for a dynamically-scheduled transmission for the first HARQ process relates to a new transmission or a re-transmission based on whether a respective value of the NDI flag for that downlink assignment has been toggled; when the most recent previous transmission for the first HARQ process occurred on a semi-persistent scheduling (SPS) resource, determine that any downlink assignment received for a dynamically-scheduled transmission for the first HARQ process relates to a new transmission regardless of the value of the NDI flag for that downlink assignment; and wherein the transceiver is further configured to receive either a new transmission or a re-transmission in accordance with each downlink assignment. - View Dependent Claims (31, 32, 33, 34)
-
Specification