Data indicator for persistently allocated packets in a communications system

Patent metadata

Field	Value
Publication number	US-9281922-B2
Application number	US-67222909-A
Country	US
Kind code	B2
Filing date	Mar 18, 2009
Priority date	Mar 20, 2008
Publication date	Mar 8, 2016
Grant date	Mar 8, 2016

Abstract

An apparatus 310 employable in a communication system configured to determine a value for a new data indicator for semi-persistently allocated or scheduled resources. In one embodiment, the apparatus 310 includes a processor 320 configured to receive a cell radio network temporary identifier indicating a semi-persistent scheduling. The processor 320 is also configured to treat a reception of data with a new data indicator flag in accordance with the semi-persistent scheduling as one of a persistent initial transmission if a value of the new data indicator flag is equal to a first predefined value, and a retransmission of semi-persistent scheduling data if the value of the new data indicator flag is equal to a second predefined value.

First claim

The invention claimed is:

1. An apparatus, comprising:
a data buffer for storing received data;
at least one processor; and
at least one memory including computer program code,
the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following:
receiving a cell radio network temporary identifier indicating a semi-persistent scheduling; and
processing a reception of data with a new data indicator flag in accordance with said semi-persistent scheduling as:
a semi-persistent initial transmission that initializes one or more semi-persistent transmissions when a value of said new data indicator flag is equal to a first predefined value, and storing parameters when said new data indicator flag is equal to said first predefined value, wherein the one or more semi-persistent transmissions are received without physical downlink control channel according to the stored parameters and wherein the new data indicator flag does not toggle every time new data is received, and
a retransmission of semi-persistent scheduling data when said value of said new data indicator flag is equal to a second predefined value, wherein said second predefined value is different than said first predefined value; and
modifying said stored data in the data buffer depending on said value of said new data indicator flag.

2. The apparatus according to claim 1 wherein said first predefined value is zero and said second predefined value is one.

3. The apparatus according to claim 1 wherein said processor is configured to:
receive another cell radio network temporary identifier indicating a non-semi-persistent scheduling; and
treat another reception of data with another new data indicator flag in accordance with said non-semi-persistent scheduling as one of:
new data if a value of said another new data indicator flag is different than a value of a previously received new data indicator flag, and
retransmitted data if said value of said another new data indicator flag is equal to said value of said previously received new data indicator flag.

4. The apparatus according to claim 1 , wherein said processor is configured to instruct said data buffer to modify said stored data by:
flushing said stored data when said value of said new data indicator flag is equal to said first predefined value, or if the one or more semi-persistent transmissions are received without physical downlink control channel, and
combining said stored data with said retransmission of the semi-persistent scheduling data when said value of said new data indicator flag is equal to said second predefined value.

5. The apparatus according to claim 1 wherein said new data indicator flag is provided in a physical downlink control channel.

6. A non-transitory computer-readable storage medium storing a computer program which when run on a computer, causes the computer to:
receiving a cell radio network temporary identifier indicating a semi-persistent scheduling; and
processing a reception of data with a new data indicator flag in accordance with said semi-persistent scheduling as:
semi-persistent initial transmission that initializes one or more semi-persistent transmissions when a value of said new data indicator flag is equal to a first predefined value, and storing parameters when said new data indicator flag is equal to said first predefined value, wherein the one or more semi-persistent transmissions are received without physical downlink control channel according to the stored parameters, and wherein the new data indicator flag does not toggle every time new data is received, and
a retransmission of semi-persistent scheduling data when said value of said new data indicator flag is equal to a second predefined value, wherein said second predefined value is different than said first predefined value; and

modifying stored data in a data buffer depending on said value of said new data indicator flag.

7. A method, comprising:
receiving a cell radio network temporary identifier indicating a semi-persistent scheduling; and
processing a reception of data with a new data indicator flag in accordance with said semi-persistent scheduling as:
semi-persistent initial transmission that initializes one or more semi-persistent transmissions when a value of said new data indicator flag is equal to a first predefined value, and storing parameters when said new data indicator flag is equal to said first predefined value, wherein the one or more semi-persistent transmissions are received without physical downlink control channel according to the stored parameters, and wherein the new data indicator flag does not toggle every time new data is received, and
a retransmission of semi-persistent scheduling data when said value of said new data indicator flag is equal to a second predefined value, wherein said second predefined value is different than said first predefined value; and

modifying stored data in a data buffer depending on said value of said new data indicator flag.

8. An apparatus, comprising:
at least one processor; and
at least one memory including computer program code,
the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following:
provide a cell radio network temporary identifier indicating a semi-persistent scheduling; and
derive a new data indicator flag having:
a first predefined value for a semi-persistent initial transmission that initializes one or more semi-persistent transmissions, and provide parameters when said new data indicator flag is equal to said first predefined value, wherein the one or more semi-persistent transmissions are transmitted without physical downlink control channel according to the provided parameters, and wherein the new data indicator flag does not toggle every time new data is received, and

a second predefined value for a retransmission of semi-persistent scheduling data, wherein said second predefined value is different than said first predefined value; and
transmitting data with the derived new data indicator flag receivable by a user equipment for modifying data in a data buffer of the user equipment depending on the value of the new data indicator flag.

9. A method, comprising:
providing a cell radio network temporary identifier indicating a semi-persistent scheduling; and
deriving a new data indicator flag having:
a first predefined value for semi-persistent initial transmission that initializes one or more semi-persistent transmissions, and providing parameters when said new data indicator flag is equal to said first predefined value, and wherein the one or more semi-persistent transmissions are transmitted without physical downlink control channel according to the provided parameters, and wherein the new data indicator flag does not toggle every time new data is received, and
a second predefined value for a retransmission of semi-persistent scheduling data, wherein said second predefined value is different than said first predefined value; and

transmitting data with the derived new data indicator flag receivable by a user equipment for modifying data in a data buffer of the user equipment depending on the value of the new data indicator flag.

10. An apparatus, comprising:
a data buffer for storing received data;
at least one processor; and
at least one memory including computer program code,
the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following:
receiving a cell radio network temporary identifier indicating a semi

Assignees

• Malkamaki Esa Mikael
• Ojala Jussi Kustaa
• Nokia Corp

Inventors

• Malkamaki Esa Mikael
• Ojala Jussi Kustaa

Classifications

• H04L1/1854

  Scheduling and prioritising arrangements · CPC title

• H04W72/12

  Wireless traffic scheduling · CPC title

• H04W72/04

  Wireless resource allocation · CPC title

• H04L1/1812 Primary

  Hybrid protocols; Hybrid automatic repeat request [HARQ] · CPC title

• H04W74/006

  in the downlink, i.e. towards the terminal · CPC title