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Filtering semi-persistent scheduling false alarms

A semi-persistent scheduling and scheduling instruction technology, applied in the direction of forward error control, error prevention, digital transmission system, etc., can solve serious problems, limited consequences, etc.

Active Publication Date: 2011-02-09
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the consequences are limited
[0012] However, when the UE is configured for Semi-Persistent Scheduling (SPS), the consequences can be more severe, especially on the uplink

Method used

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  • Filtering semi-persistent scheduling false alarms
  • Filtering semi-persistent scheduling false alarms
  • Filtering semi-persistent scheduling false alarms

Examples

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Embodiment Construction

[0041] A scheduled data communication system with access nodes and terminals supports cyclic communication of small data volumes such as voice over IP (VoIP). To make error checking in Random Access Response (RAR) (e.g., Semi-Persistent Scheduling (SPS) for VoIP) more robust, a constraint is imposed on a portion of the grant or assignment payload, which can be used as a basis for determining a valid grant or assignment. The constraints are validated against prerequisites, rather than relying solely on validity check fields (eg, cyclic redundancy checks (CRC)). Thereby, incorrect acknowledgment of grants or assignments is avoided for dynamic scheduling or for semi-persistent scheduling, which would cause persistent errors. Because the validation is performed on a portion of the payload, the constrained portion of the payload may also be referred to as a "virtual CRC."

[0042] As used in this application, the terms "component," "module," "system" and the like are intended to r...

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Abstract

A scheduled data communication system of an access node and terminal supports recurring communications of small data amounts such as Voice over IP (VoIP). In order to make error checking more robust in a random access response (RAR), such as for semi-persistent scheduling (SPS) for VoIP, a portion of a grant or assignment payload has a constraint imposed that can be verified as a condition precedent to determining a valid grant or assignment rather than only relying upon a validity check field, such as a cyclic redundancy check (CRC). Thereby, incorrect validation of a grant or assignment is avoided for dynamic scheduling or for semi-persistent scheduling, the latter causing a persistent error.

Description

[0001] Claim of priority under 35 U.S.C. §119 [0002] This patent application claims that the title of the application on March 19, 2008 is "A Method and Apparatus for Using Dual Layer of Error Checking to Reduce False CRC Matching (A Method and Apparatus for Using Dual Layer of Error Checking to Reduce False CRC Matching) )", which is assigned to the assignee of the present invention and is hereby expressly incorporated herein by reference. technical field [0003] The exemplary and non-limiting aspects described herein relate generally to wireless communication systems, methods, computer program products and devices, and more specifically to techniques for semi-persistent scheduling on uplink channels. Background technique [0004] Wireless communication systems are widely deployed to provide various types of communication content such as voice, data, and so on. These systems may be multiple-access systems capable of supporting communication with multiple users by shari...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12
CPCH04L1/0045H04L1/0061H04L1/0072H04W72/04H04W72/042H04W28/04H04W72/23H04W72/11H04L1/1812H04B7/0413
Inventor 阿诺·梅兰胡安·蒙托霍
Owner QUALCOMM INC
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