Method for transmitting response information in mobile communications system

• US 8,451,821 B2
• Filed: 03/01/2012
• Issued: 05/28/2013
• Est. Priority Date: 02/07/2006
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Young Dae, Chun, Sung Duck, Jung, Myung Cheul, Park, Sung Jun
• Primary Examiner(s): Phillips, Hassan
• Assistant Examiner(s): Sharma, Gautam
• Application Number:
  US13/410,214
• Publication Number:
  US 20120163325A1
• Time in Patent Office: 453 Days
• Field of Search: None
• US Class Current: 370/350
• CPC Class Codes: H04L 1/1671 the supervisory signal being transmitted together with control information
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1825 Adaptation of specific ARQ protocol parameters according to transmission conditions
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/18 End to end
• CPC Class Codes: H04L 47/34 ensuring sequence integrity, e.g. using sequence numbers
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04W 28/26 Resource reservation
• CPC Class Codes: H04W 56/0045 compensating for timing error by altering transmission time
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 74/004 in the uplink, i.e. towards network
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access
• CPC Class Codes: H04W 74/0866 using a dedicated channel for access
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method for a user equipment to perform a random access to a network in a mobile communication system includes transmitting a random access preamble to the network; receiving a medium access control packet data unit (MAC PDU) via a downlink shared channel, wherein the MAC PDU comprises one or more sub headers in a first part of the MAC PDU and one or more random access responses in a second part of the MAC PDU subsequent to the first part, and wherein the random access responses include first uplink resource allocation information; transmitting a first uplink data based on the first uplink resource allocation information in one of the random access responses; and transmitting a second uplink data based on second uplink resource allocation information when the second uplink resource allocation information is received via a downlink control channel.

Claims

1. A method for a user equipment to perform a random access to a network in a mobile communication system, the method comprising:

transmitting a random access preamble to the network;

receiving a medium access control packet data unit (MAC PDU) via a downlink shared channel, wherein the MAC PDU comprises one or more sub headers in a first part of the MAC PDU and one or more random access responses in a second part of the MAC PDU subsequent to the first part, and wherein the random access responses comprise first uplink resource allocation information;

transmitting a first uplink data based on the first uplink resource allocation information in one of the random access responses; and

transmitting a second uplink data based on second uplink resource allocation information when the second uplink resource allocation information is received via a downlink control channel.

2. The method of claim 1, wherein the transmitting the second uplink data corresponds to a retransmission of the first uplink data.

3. The method of claim 1, further comprising:

receiving, via the downlink control channel, control information regarding a location of the downlink shared channel to receive the MAC PDU.

4. A user equipment (UE) performing a random access to a network in a mobile communication system, the user equipment comprising:

a transmitter configured to transmit a random access preamble to the network;

a receiver configured to receive a medium access control packet data unit (MAC PDU) via a downlink shared channel, wherein the MAC PDU comprises one or more sub headers in a first part of the MAC PDU and one or more random access responses in a second part of the MAC PDU subsequent to the first part, and wherein the random access responses comprise first uplink resource allocation information,

wherein the transmitter is further configured to transmit a first uplink data based on the first uplink resource allocation information in one of the random access responses, and to transmit a second uplink data based on second uplink resource allocation information when the receiver receives, via a downlink control channel, the second uplink resource allocation information for transmission of the second uplink data.

5. The user equipment of claim 4, wherein the transmitter transmits the second uplink data as a retransmission of the first uplink data.

6. The user equipment of claim 4, wherein the receiver is further configured to receive, via the downlink control channel, control information regarding a location of the downlink shared channel to receive the MAC PDU.

7. A method for a network to control a random access of a user equipment (UE) in a mobile communication system, the method comprising:

receiving a random access preamble from the UE;

transmitting a medium access control packet data unit (MAC PDU) via a downlink shared channel, wherein the MAC PDU comprises one or more sub headers in a first part of the MAC PDU and one or more random access responses in a second part of the MAC PDU subsequent to the first part, and wherein the random access responses comprises first uplink resource allocation information;

receiving a first uplink data according to the first uplink resource allocation information in one of the random access responses; and

transmitting, via a downlink control channel, second uplink resource allocation information for reception of a second uplink data.

8. The method of claim 7, wherein the reception of the second uplink data corresponds to a reception of a retransmission of the first uplink data.

9. The method of claim 7, further comprising:

transmitting, via the downlink control channel, control information regarding a location of the downlink shared channel to transmit the MAC PDU.

10. A network controlling a random access of a user equipment (UE) in a mobile communication system, the network comprising:

a receiver configured to receive a random access preamble from the UE;

a transmitter configured to transmit a medium access control packet data unit (MAC PDU) via a downlink shared channel, wherein the MAC PDU comprises one or more sub headers in a first part of the MAC PDU and one or more random access responses in a second part of the MAC PDU subsequent to the first part, and wherein the random access responses comprises first uplink resource allocation information,

wherein, after the receiver receives a first uplink data according to the first uplink resource allocation information in one of the random access responses, the transmitter is further configured to transmit, via a downlink control channel, second uplink resource allocation information for reception of a second uplink data.

11. The network of claim 10, wherein the receiver receives the second uplink data as a reception of a retransmission of the first uplink data.

12. The network of claim 10, wherein the transmitter is further configured to transmit, via the downlink control channel, control information regarding a location of the downlink shared channel to transmit the MAC PDU.