Back to results
US 8,284,754 B2Granted
Apparatus and method for determining time to response of retransmission in a multihop relay wireless communication system
AssigneeSamsung Electronics Co., Ltd.
InventorsYoung-Bin Chang, Rakesh Taori, Jung-Je Son
Life of this patent
Estimating the term…
Abstract
A multihop relay wireless communication system is provided. A Base Station (BS) includes a calculator for calculating an ACKnowledge (ACK)/Non ACK (NACK) transmission time of at least one Relay Station (RS) using retransmission parameter values, and a transmitter for transmitting the ACK/NACK transmission time information to the at least one RS.
Claims22
An apparatus for a Base Station (BS) in a multihop relay wireless communication system based on a centralized scheduling, the apparatus comprising:
- a calculator for calculating a time interval which specifies when a Relay Station (RS) transmits an ACKnowledge (ACK)/Non ACK (NACK) and for providing a transmitter with information on the time interval, wherein the time interval is expressed in units of frames and is calculated using:
- a DownLink (DL) data processing delay time within the RS and a DL data processing delay time within each of any other RS between the RS and a Mobile Station (MS),
- an ACK/NACK transmission delay time within the MS, and
- an ACK/NACK processing delay time within the RS and an ACK/NACK processing delay time within each of any other RS between the RS and the MS;
- and
- the transmitter for transmitting the information on the time interval to the RS, the information on the time interval comprising one of:
- a frame offset between a first frame at which the RS receives the packet and a second frame at which the RS transmits the ACK/NACK,
- a frame offset between a third frame at which the RS receives the ACK/NACK scheduling information and the second frame at which the RS transmits the ACK/NACK, and
- an absolute frame number of the second frame at which the RS transmits the ACK/NACK.
6 more elements
An apparatus for a Relay Station (RS) in a multihop relay wireless communication system based on a centralized scheduling, the apparatus comprising:
- a receiver for receiving information on a time interval that originated at a Base Station (BS), wherein the time interval specifies when the RS transmits an ACKnowledge (ACK)/Non ACK (NACK);
- and
- a transmitter for transmitting the ACK/NACK in relation to a packet corresponding to the information on the time interval in a frame indicated by the information on the time interval,
- wherein the information on the time interval comprises one of:
- a frame offset between a first frame at which the RS receives the packet and a second frame at which the RS transmits the ACK/NACK,
- a frame offset between a third frame at which the RS receives the ACK/NACK scheduling information and the second frame at which the RS transmits the ACK/NACK, and
- an absolute frame number of the second frame at which the RS transmits the ACK/NACK, and
- wherein the time interval is expressed in units of frames and is calculated using:
- a DownLink (DL) data processing delay time within the RS and a DL data processing delay time within each of any other RS between the RS and a Mobile Station (MS),
- an ACK/NACK transmission delay time within the MS, and
- an ACK/NACK processing delay time within the RS and an ACK/NACK processing delay time within each of any other RS between the RS and the MS.
8 more elements
An operating method of a Base Station (BS) in a multihop relay wireless communication system based on a centralized scheduling, the method comprising:
- calculating a time interval which specifies when a Relay Station (RS) transmits an ACKnowledge (ACK)/Non ACK (NACK), wherein the time interval is expressed in units of frames and is calculated using:
- a DownLink (DL) data processing delay time within the RS and a DL data processing delay time within each of any other RS between the RS and a Mobile Station (MS),
- an ACK/NACK transmission delay time within the MS, and
- an ACK/NACK processing delay time within the RS and an ACK/NACK processing delay time within each of any other RS between the RS and the MS;
- and
- transmitting information on the time interval to the RS, the information on the time interval comprising one of:
- a frame offset between a first frame at which the RS receives the packet and a second frame at which the RS transmits the ACK/NACK,
- a frame offset between a third frame at which the RS receives the ACK/NACK scheduling information and the second frame at which the RS transmits the ACK/NACK, and
- an absolute frame number of the second frame at which the RS transmits the ACK/NACK.
6 more elements
An operating method of a Relay Station (RS) in a multihop relay wireless communication system based on a centralized scheduling, the method comprising:
- receiving information on a time interval that originated at a Base Station (BS), wherein the time interval specifies when the RS transmits an ACKnowledge (ACK)/Non ACK (NACK);
- and
- transmitting the ACK/NACK in relation to a packet corresponding to the information on the time interval in a frame indicated by the information on the time interval,
- wherein the information on the time interval comprises one of:
- a frame offset between a first frame at which the RS receives the packet and a second frame at which the RS transmits the ACK/NACK,
- a frame offset between a third frame at which the RS receives the ACK/NACK scheduling information and the second frame at which the RS transmits the ACK/NACK, and
- an absolute frame number of the second frame at which the RS transmits the ACK/NACK, and
- wherein the time interval is expressed in units of frames and is calculated using:
- a DownLink (DL) data processing delay time within the RS and a DL data processing delay time within each of any other RS between the RS and a Mobile Station (MS),
- an ACK/NACK transmission delay time within the MS, and
- an ACK/NACK processing delay time within the RS and an ACK/NACK processing delay time within each of any other RS between the RS and the MS.
8 more elements
An operating method of a Relay Station (RS) in a multihop relay wireless communication system based on a centralized scheduling, the method comprising:
- receiving retransmission parameter values from a Base Station (BS), wherein the retransmission parameter values comprise:
- a DownLink (DL) data processing delay time within each of any other RS between the RS and the MS,
- an ACK/NACK transmission delay time within the MS, and
- an ACK/NACK processing delay time within each of any other RS between the RS and the MS;
- calculating a time interval using the retransmission parameter values, wherein the time interval specifies when the RS transmits an ACKnowledge (ACK)/Non ACK (NACK) and is expressed in units of frames;
- and
- transmitting the ACK/NACK according to the time interval,
- wherein the time interval comprises one of:
- a frame offset between a first frame at which the RS receives the packet and a second frame at which the RS transmits the ACK/NACK,
- a frame offset between a third frame at which the RS receives the ACK/NACK scheduling information and the second frame at which the RS transmits the ACK/NACK, and
- an absolute frame number of the second frame at which the RS transmits the ACK/NACK.
8 more elements
Dependencies are inferred from the claim text.