Method for reporting channel quality through uplink common channel in wireless communication

• US 8,059,606 B2
• Filed: 01/08/2008
• Issued: 11/15/2011
• Est. Priority Date: 01/09/2007
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yi, Seung-June, Park, Sung-Jun, Lee, Young-Dae, Chun, Sung-Duck
• Primary Examiner(s): Vu; Huy
• Assistant Examiner(s): Beyen; Zewdu A
• Application Number:
  US12/519,108
• Publication Number:
  US 20100020712A1
• Time in Patent Office: 1,407 Days
• Field of Search: None
• US Class Current: 370/333
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0027 Scheduling of signalling, e.g. occurrence thereof
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

In a wireless mobile communications system, a method of transmitting and receiving channel quality information is provided. A base station transmits a command or indication a terminal to transmit the channel quality information, the terminal receives the command or indication by receiving a control channel periodically, and the terminal reports the channels quality information to the base station after receiving the command or indication.

Claims

1. A method of transmitting channel quality information (CQI) in a mobile communications system, the method comprising:

periodically checking whether a request for reporting the channel quality information is received from a network,

wherein the request is transmitted from the network for a report of channel quality

wherein the request is received through a High Speed-Shared Control Channel (HS-SCCH),

wherein an identifier of a corresponding terminal is also received from the network through the HS-SCCH, and

wherein the identifier of the corresponding terminal is a HS-DSCH Radio Network Temporary Identifier (H-RNTI); and

transmitting the channel quality information to the network after the request is received according to the checking step,

wherein the channel quality information is transmitted to the network through a random access channel (RACH) procedure,

wherein the channel quality information is included in a medium access control protocol data unit (MAC PDU) of a RACH message,

wherein the MAC PDU including the CQI is transmitted to the network through a High Speed-Downlink Shared Channel (HS-DSCH),

wherein a format of the MAC PDU transmitted through the HS-DSCH is determined by the H-RNTI received through the HS-SCCH, and

wherein the RACH message is transmitted in a transmission time interval (TTI) of every 2 ms

wherein the MAC PDU comprises;

a TCTF (Type Channel Type Field) which used to indicate a type of logical channel;

a terminal ID to identify a channel quality measurement terminal; and

an indicator in a preamble of the MAC PDU to indicate the RACH message is transmitted in the transmission time interval (TTI) of every 2 ms.

2. The method of claim 1, wherein the periodically checking step is performed by monitoring a control channel.

3. The method of claim 2, wherein the monitoring of the control channel is performed by periodically receiving the control channel.

4. The method of claim 1, wherein at least one RACH message is transmitted after the request is received.

5. The method of claim 1, wherein the channel quality information is transmitted periodically for certain time period after the request is received.

6. The method of claim 1, wherein the request is transmitted from the network through first layer signaling via a physical control channel.

7. The method of claim 1, wherein the request is included in a header or payload of a MAC PDU generated in a MAC layer.

8. A method of receiving channel quality information (CQI) in a mobile communications system, the method comprising:

transmitting, to a mobile terminal, a request for reporting the channel quality information when the channel quality information is temporarily needed;

wherein the request is transmitted through a High Speed-Shared Control Channel (HS-SCCH),

wherein an identifier of a corresponding terminal is also transmitted to the mobile terminal through the HS-SCCH, and

wherein the identifier of the corresponding terminal is a HS-DSCH Radio Network Temporary Identifier (H-RNTI); and

receiving the channel quality information from the mobile terminal,

wherein the channel quality information is received from the mobile terminal through a random access channel (RACH) procedure,

wherein the channel quality information is included in a medium access control protocol data unit (MAC PDU) of a RACH message,

wherein the MAC PDU including the CQI is received from the mobile terminal through a High Speed-Downlink Shared Channel (HS-DSCH),

wherein a format of the MAC PDU received through the HS-DSCH is determined by the H-RNTI transmitted through the HS-SCCH, and

wherein the RACH message is received in a transmission time interval (TTI) of every 2 ms

wherein the MAC PDU comprises;

a TCTF (Type Channel Type Field) which used to indicate a type of logical channel;

a terminal ID to identify a channel quality measurement terminal; and

an indicator in a preamble of the MAC PDU to indicate the RACH message is transmitted in the transmission time interval (TTI) of every 2 ms.

9. The method of claim 8, wherein the received channel quality information is used to support high speed packet access procedures.

10. The method of claim 8, wherein the request is included in a header or payload of a MAC PDU generated in a MAC layer.

11. A mobile terminal for transmitting channel quality information (CQI), the mobile terminal comprising:

a radio protocol adapted to periodically check whether a request for reporting the channel quality information is received from a network,

wherein the request is received through a High Speed-Shared Control Channel (HS-SCCH),

wherein an identifier of a corresponding terminal is also received from the network through the HS-SCCH,

wherein the identifier of the corresponding terminal is a HS-DSCH Radio Network Temporary Identifier (H-RNTI)

wherein the request is transmitted from the network for a report of channel quality, and to transmit the channel quality information to the network after the request is received,

wherein the channel quality information is transmitted to the network through a random access channel (RACH) procedure,

wherein the channel quality information is included in a medium access control protocol data unit (MAC PDU) of a RACH message,

wherein the MAC PDU including the CQI is transmitted to the network through a High Speed-Downlink Shared Channel (HS-DSCH),

wherein a format of the MAC PDU transmitted through the HS-DSCH is determined by the H-RNTI received through the HS-SCCH, and

wherein the RACH message is transmitted in a transmission time interval (TTI) of every 2 ms

wherein the MAC PDU comprises;

a TCTF (Type Channel Type Field) which used to indicate a type of logical channel;

a terminal ID to identify a channel quality measurement terminal; and

an indicator in a preamble of the MAC PDU to indicate the RACH message is transmitted in the transmission time interval (TTI) of every 2 ms.