Methods for detection of failure and recovery in a radio link

• US 8,565,350 B2
• Filed: 09/06/2012
• Issued: 10/22/2013
• Est. Priority Date: 08/08/2008
• Status: Active Grant

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola Mobility LLC (Lenovo Group Ltd.)
• Inventors: Krishnamurthy, Sandeep H., Buckley, Michael E., Kuchibhotla, Ravi, Love, Robert T., Nory, Ravi
• Primary Examiner(s): WANG, TED M
• Application Number:
  US13/605,173
• Publication Number:
  US 20120327984A1
• Time in Patent Office: 411 Days
• Field of Search: 375/316, 375/357, 375/356, 375/354
• US Class Current: 375/316
• CPC Class Codes: H04W 56/00 Synchronisation arrangements

Abstract

A method, telecommunication apparatus, and electronic device detect a status of a radio link. A transceiver 302 may receive a reference signal transmitted from a base station 104. A processor 304 may assume a transmission of a codeword of a first payload type from the base station and may determine a synchronization status based on the received reference signal and based on the assumed transmission of the codeword of the first payload type from the base station.

Claims

1. A telecommunications apparatus for detecting a status of a radio link, the telecommunications apparatus comprising:

a transceiver that receives a reference signal transmitted from a base station; and

a processor that assumes a transmission of a codeword of a first payload type from the base station and determines a synchronization status based on the received reference signal and based on the assumed transmission of the codeword of the first payload type from the base station;

wherein the processor estimates a block error rate applicable to the assumed codeword of the first payload type based on the reference signal.

2. The telecommunications apparatus of claim 1 wherein the processor estimates from the reference signal a metric of at least one of a block error rate, a mean mutual information per bit, average signal to noise ratio, and channel capacity using a recovery format and determines if the radio link has an in synchronization event if the metric is within a recovery range.

3. The telecommunications apparatus of claim 1 wherein the processor estimates from the reference signal a metric of at least one of a block error rate, a mean mutual information per bit, average signal to noise ratio, or channel capacity using a recovery format and determines if the radio link has an out of synchronization event if the metric is within a failure range.

4. The telecommunications apparatus of claim 3 wherein the processor sets the failure range based upon at least one payload parameter.

5. The telecommunications apparatus of claim 3 wherein the processor sets the recovery range based upon at least one payload parameter.

6. The telecommunications apparatus of claim 1 wherein the processor processes the received reference signal over a specified bandwidth.