Device and method for determining high speed shared control channel in a communication terminal

• US 9,294,228 B2
• Filed: 11/10/2009
• Issued: 03/22/2016
• Est. Priority Date: 11/11/2008
• Status: Expired due to Fees

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Shin, Min Ho, Ok, Kwang Man, Gil, Gang Mi, Im, Ju Hyuk
• Primary Examiner(s): Mattis, Jason
• Assistant Examiner(s): Clawson, Stephen J
• Application Number:
  US12/615,784
• Publication Number:
  US 20100118707A1
• Time in Patent Office: 2,324 Days
• Field of Search: 370/241
• US Class Current: 1/1
• CPC Class Codes: H04L 1/0039 other detection of signalling, e.g. detection of TFCI explicit signalling H04L1/0046, H04L27/0012 and H04L25/0262 take precedence
• CPC Class Codes: H04L 1/0054 Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
• CPC Class Codes: H04L 1/0072 Error control for data other than payload data, e.g. control data
• CPC Class Codes: H04L 1/1896 ARQ related signaling
• CPC Class Codes: H04L 1/20 using signal quality detector

Abstract

An apparatus and method for detecting high speed shared control channel of a communication terminal is provided, which recognizes decoding reliability for each of high-speed shared control channel by decoding each of a plurality of high-speed shared control channels; decides a maximum and a minimum in the decoding reliability, calculates a difference between the maximum and the minimum to compare the calculated difference with a preset critical value; and detects and processes a high-speed shared control channel corresponding to the maximum, when the difference exceeds the critical value. Accordingly, even though the wireless environment is inferior, the decoding reliability of an HS-SCCH can be more accurately decided in an HS-SCCH detection apparatus of the communications terminal and the detection performance of the HS-SCCH can be improved in a communication terminal.

Claims

1. A method of detecting a high-speed shared control channel which transmits control information for demodulating a specific high-speed physical downlink shared channel in a communication terminal, the method comprising:

recognizing decoding reliability for each high-speed shared control channel by decoding each of a plurality of high-speed shared control channels;

deciding a maximum decoding reliability and a minimum decoding reliability from the recognized decoding reliabilities;

calculating a difference between the maximum decoding reliability and the minimum decoding reliability;

comparing the calculated difference with a preset critical value; and

detecting and processing a high-speed shared control channel corresponding to the maximum decoding reliability, when the difference exceeds the critical value.

2. The method of claim 1, wherein detecting and processing a high-speed shared control channel comprises demodulating a corresponding high-speed physical downlink shared channel using control information of the detected high-speed shared control channel.

3. The method of claim 1, wherein recognizing the decoding reliability comprises:

Viterbi-decoding each of the high-speed control channels; and

normalizing decoding reliability of each of the high-speed shared control channels.

4. An apparatus for detecting a high-speed shared control channel which transmits control information for demodulating a specific high-speed physical downlink shared channel in a communication terminal, the apparatus comprising:

a reliability recognition unit which is configured to decode each of a plurality of high-speed shared control channels, and to recognize decoding reliability for each of the high-speed shared control channels;

a reliability comparison unit which is configured to decide a maximum decoding reliability and a minimum decoding reliability from the recognized decoding reliabilities, to calculate a difference between the maximum decoding reliability and the minimum decoding reliability, and to compare the calculated difference with a preset critical value; and

a detection control unit which is configured to detect and process a high-speed shared control channel corresponding to the maximum decoding reliability when the difference exceeds the critical value.

5. The apparatus of claim 4, wherein the detection control unit demodulates a corresponding high-speed physical downlink shared channel using control information of the detected high-speed shared control channel.

6. The apparatus of claim 4, wherein the reliability recognition unit recognizes and normalizes the decoding reliability when Viterbi-decoding each high-speed shared control channel.