Application programming interface (API) for restoring a default scan list in a wireless communications receiver

• US 8,645,976 B2
• Filed: 04/30/2008
• Issued: 02/04/2014
• Est. Priority Date: 05/03/2007
• Status: Expired due to Fees

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Gautam, Shusheel, DeVico, Michael, Avadhanam, Phani Bhushan, Gao, Ying, Zhang, Jian, Ellis, Paul Richard, Filiba, Viktor, Tang, Tong, Stacey, Robert
• Primary Examiner(s): Ho, Andy
• Assistant Examiner(s): Kraft, Shih-Wei
• Application Number:
  US12/113,040
• Publication Number:
  US 20090019461A1
• Time in Patent Office: 2,106 Days
• Field of Search: None
• US Class Current: 719/328
• CPC Class Codes: H04L 69/32 Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
• CPC Class Codes: H04L 69/326 in the transport layer [OSI layer 4] H04L69/16 takes precedence
• CPC Class Codes: H04N 21/414 Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
• CPC Class Codes: H04N 21/41407 embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop constructional details of equipment or arrangements specially adapted for portable computer application G06F1/1626; arrangements specially adapted for mobile receivers in broadcast systems H04H20/57
• CPC Class Codes: H04N 21/426 Internal components of the client ; Characteristics thereof H04N5/44 takes precedence
• CPC Class Codes: H04N 21/4431 characterized by the use of Application Program Interface [API] libraries
• CPC Class Codes: H04N 21/4432 Powering on the client, e.g. bootstrap loading using setup parameters being stored locally or received from the server resetting in general G06F1/14; program loading or initiating in general G06F9/445; bootstrapping in general G06F9/4401; secure boots of computer platforms G06F21/57

Abstract

A signal may be received in accordance with a protocol stack having a first portion (400) that contains a control layer and a stream layer, and a second portion (401) that contains a physical layer and a MAC layer. The first portion may invoke an application program interface (API 1402) to instruct the second portion to replace a current set of signal acquisition parameters with an initial set of signal acquisition parameters.

Claims

1. An apparatus configured to receive a signal in accordance with a protocol stack that contains a physical layer, a medium access control (MAC) layer, a control layer and a stream layer, comprising:

a processor;

a receiver stack processing system configured to provide the control and stream layers;

a media processing system configured to provide the physical and MAC layers; and

an application programming interface (API) to support communication between the receiver stack processing system and the media processing system;

wherein said receiver stack processing system is configured to invoke said API to instruct said media processing system to replace a current set of signal acquisition parameters currently used by said media processing system for signal acquisition, with an initial set of signal acquisition parameters that was initially provisioned for said media processing system to use for signal acquisition,

wherein said receiver stack processing system is configured to determine when a candidate set of signal acquisition parameters and said initial set of signal acquisition parameters are mutually exclusive such that no signal acquisition parameters of said candidate set of signal acquisition parameters are included in said initial set of signal acquisition parameters,

wherein said receiver stack processing system is configured to, when said candidate set of signal acquisition parameters are mutually exclusive of said initial set of signal acquisition parameters, replace said candidate set of signal acquisition parameters with said initial set of signal acquisition parameters,

wherein said candidate set of signal acquisition parameters and said initial set of signal acquisition parameters each comprise a plurality of acquisition parameters,

wherein said receiver stack processing system is configured to invoke said API when said candidate set of signal acquisition parameters that would otherwise become the current set of signal acquisition parameters is mutually exclusive with respect to said initial set of signal acquisition parameters, and

wherein said signal acquisition parameters include signal acquisition frequencies.

2. The apparatus of claim 1, wherein said receiver stack processing system is configured to invoke said API after a predetermined amount of time has elapsed without successful signal acquisition using the current set of signal acquisition parameters.

3. An apparatus configured to receive a signal in accordance with a protocol stack that contains a physical layer, a medium access control (MAC) layer, a control layer and a stream layer, comprising:

first processing means for providing the control and stream layers;

second processing means for providing the physical and MAC layers;

means for providing an application programming interface (API) that supports communication between said first processing means and said second processing means;

wherein said first processing means includes means for invoking said API to instruct said second processing means to replace a current set of signal acquisition parameters currently used for signal acquisition by said second processing means with an initial set of signal acquisition parameters that was initially provisioned for said second processing means to use for signal acquisition,

wherein said first processing means includes means for determining when a candidate set of signal acquisition parameters and said initial set of signal acquisition parameters are mutually exclusive such that no signal acquisition parameters of said candidate set of signal acquisition parameters are included in said initial set of signal acquisition parameters,

wherein said first processing means includes means for replacing said candidate set of signal acquisition parameters with said initial set of signal acquisition parameters when said candidate set of signal acquisition parameters are mutually exclusive of said initial set of signal acquisition parameters,

wherein said candidate set of signal acquisition parameters and said initial set of signal acquisition parameters each comprise a plurality of acquisition parameters,

wherein said first processing means includes means for invoking said API when said candidate set of signal acquisition parameters that would otherwise become the current set of signal acquisition parameters is mutually exclusive with respect to said initial set of signal acquisition parameters, and

wherein said signal acquisition parameters include signal acquisition frequencies.

4. The apparatus of claim 3, wherein said first processing means includes means for invoking said API after a predetermined amount of time has elapsed without successful signal acquisition using the current set of signal acquisition parameters.

5. A method of communication, comprising:

receiving a signal in accordance with a protocol stack having a first portion that contains a control layer and a stream layer, and a second portion that contains a physical layer and a medium access control (MAC) layer;

the first portion invoking an application programming interface (API) to instruct the second portion to replace a current set of signal acquisition parameters currently used by the second portion for signal acquisition with an initial set of signal acquisition parameters that was initially provisioned for the second portion to use for signal acquisition;

the first portion determining when a candidate set of signal acquisition parameters and said initial set of signal acquisition parameters are mutually exclusive such that no signal acquisition parameters of said candidate set of signal acquisition parameters are included in said initial set of signal acquisition parameters;

the first portion replacing said candidate set of signal acquisition parameters with said initial set of signal acquisition parameters when said candidate set of signal acquisition parameters are mutually exclusive of said initial set of signal acquisition parameters,

wherein said candidate set of signal acquisition parameters and said initial set of signal acquisition parameters each comprise a plurality of acquisition parameters,

the first portion invoking said API when said candidate set of signal acquisition parameters that would otherwise become the current set of signal acquisition parameters is mutually exclusive with respect to said initial set of signal acquisition parameters, and

wherein said signal acquisition parameters include signal acquisition frequencies.

6. The method of claim 5, including the first portion invoking said API after a predetermined amount of time has elapsed without successful signal acquisition using the current set of signal acquisition parameters.

7. A non-transitory machine-readable medium comprising instructions executable by one or more processors in an apparatus, the apparatus being configured to receive a signal in accordance with a protocol stack that contains a physical layer, a medium access control (MAC) layer, a control layer and a stream layer, the physical layer and the MAC layer implemented with a media processing system, and the control layer and the stream layer implemented with a receiver stack processing system, the instructions comprising:

a receiver stack code segment to implement the receiver stack processing system; and

an application programming interface (API) code segment that implements an API to support communication between the receiver stack processing system and the media processing system;

wherein the receiver stack processing system invokes said API to instruct the media processing system to replace a current set of signal acquisition parameters currently used by the media processing system for signal acquisition with an initial set of signal acquisition parameters that was initially provisioned for the media processing system to use for signal acquisition,

wherein the receiver stack processing system determines when a candidate set of signal acquisition parameters and said initial set of signal acquisition parameters are mutually exclusive such that no signal acquisition parameters of said candidate set of signal acquisition parameters are included in said initial set of signal acquisition parameters,

wherein said receiver stack processing system is configured to, when said candidate set of signal acquisition parameters are mutually exclusive of said initial set of signal acquisition parameters, replace said candidate set of signal acquisition parameters with said initial set of signal acquisition parameters,

wherein said candidate set of signal acquisition parameters and said initial set of signal acquisition parameters each comprise a plurality of acquisition parameters,

wherein the receiver stack processing system invokes said API when said candidate set of signal acquisition parameters that would otherwise become the current set of signal acquisition parameters is mutually exclusive with respect to said initial set of signal acquisition parameters, and

wherein said signal acquisition parameters include signal acquisition frequencies.

8. The non-transitory machine-readable medium of claim 7, wherein the receiver stack processing system invokes said API after a predetermined amount of time has elapsed without successful signal acquisition using the current set of signal acquisition parameters.