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Communication method and system adapted through gatt and exception handling

A technology of exception handling and communication method, applied in the field of data communication, can solve the problems of time interval timeout, loss, communication failure of both communication parties, etc., to achieve the effect of simplifying the workload

Active Publication Date: 2022-03-04
CHONGQING UNIV
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  • Application Information

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Problems solved by technology

[0007] The present invention provides a communication method and system adapted through GATT and exception handling, so as to solve the problem in the above-mentioned background technology that during the data exchange process or CPA data exchange process between the communication parties, problems such as time interval overtime and CPA layer often occur. CC feature errors, GATT subroutine execution errors, GATT protocol errors and other errors or errors or abnormalities such as link loss, which lead to communication failure between the two parties

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  • Communication method and system adapted through gatt and exception handling
  • Communication method and system adapted through gatt and exception handling
  • Communication method and system adapted through gatt and exception handling

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Embodiment

[0061] Such as figure 1 As shown, the types of errors that may occur between the two parties in the data exchange process are divided into four categories:

[0062] The first category is the time interval timeout used to manage the CPA connection state, CPA layer CC feature error and ASN field error. The time interval for managing the CPA state is the communication adapted through ATT and exception handling in the patent No. 201910783902.X Three time intervals are redefined on the basis of the time intervals defined in the method and system. The first time interval is the longest wait until the link reconnection succeeds after the CPA layer receives the link connection timeout error sent by the underlying transport layer. Time; the second time interval is after the underlying transport layer actively disconnects, when the CPA layer receives the APDU from the PHD layer, the CPA layer sends the underlying transport layer an internal command to establish the underlying connection...

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Abstract

The present invention belongs to the technical field of data communication, and in particular relates to a communication system and method adapted through GATT and exception handling, wherein the CPA layer with the exception handling method is included, and the exception handling method includes: In the error or exception and its exception processing method, the present invention solves in the data exchange process or CPA data exchange process of both sides in communication, often can occur such as time interval overtime, GATT subroutine execution error, GATT agreement error etc. error or Errors or abnormalities such as link loss, which lead to the failure of communication between the two parties, have identified the error types generated in the data exchange process and carried out active or automatic fault tolerance processing, therefore, it is beneficial to ensure the effectiveness of the data communication process technical effect.

Description

technical field [0001] The invention belongs to the technical field of data communication, and in particular relates to a communication method and system adapted through GATT and exception handling. Background technique [0002] The generic attribute protocol GATT (Generic Attribute Profile) is responsible for data interaction between two BLE devices. GATT uses the ATT (Attribute Protocol) protocol. GATT groups the attributes defined in ATT, including "Service (Service)" and "Characteristic (Characteristic)", a service contains one or more characteristics, and each characteristic is defined by A collection of services forms a GATT Profile. The Bluetooth SIG officially defines some standard Services for developers to use. The data corresponding to these services and characteristics are stored in a lookup table by ATT, and the assigned UUID is used as each The index of an item. GATT also uses the attribute operation method in ATT to define subroutines to achieve different fu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L69/40H04L69/30
CPCH04L69/40H04L69/30
Inventor 曹小英赵杰冯海玲唐艺贺学兵李祥臣段小炼钟代笛黄智勇仲元红韩术印强
Owner CHONGQING UNIV