Method and apparatus for handling unicast connection establishment abnormality

A method for handling a unicast connection establishment abnormality, applied to a second device, the method comprising:

• sending a first message to a first device, wherein the first message is used to request the first device to establish a unicast connection to the second device, and the first message carries a first medium access control (MAC) address, a first address identifier, and a security mechanism of the second device;
• receiving a second message sent by the first device, wherein the second message carries at least one MAC address, at least one address identifier, and an error identifier indicating a reason why establishment of the unicast connection is abnormal;
• determining, based on the second message, that establishment of the unicast connection between the second device and the first device is abnormal;
• and
• performing an abnormality handling operation based on the error identifier,
• wherein the second message further comprises a dedicated application identifier indicating that establishment of the unicast connection is abnormal, the dedicated application identifier is carried in an application identifier (AID) field in a dedicated short message (DSM) message frame of the second message, and
• wherein the determining, based on the second message, that establishment of the unicast connection between the second device and the first device is abnormal comprises:
• when content carried in a destination MAC address field of the second message comprises a converted value of the dedicated application identifier, the at least one MAC address comprises the first MAC address, and the at least one address identifier comprises the first address identifier, determining that establishment of the unicast connection between the second device and the first device is abnormal.

An apparatus comprising:

• at least one processor;
• and
• one or more memories coupled to the at least one processor and storing programming instructions that, when executed by the at least one processor, cause the apparatus to:
• receive a first message sent by a second device, wherein the first message is used to request a first device to establish a unicast connection to the second device, and the first message carries a first medium access control (MAC) address, an address identifier, and a security mechanism of the second device;
• determine, based on the first message, that establishment of the unicast connection between the second device and the first device is abnormal;
• send a second message to the second device, wherein the second message carries the first MAC address, the address identifier, and an error identifier indicating a reason why establishment of the unicast connection is abnormal,
• wherein the programming instructions, when executed by the at least one processor, further cause the apparatus to:
• determine, based on a determining result indicating that the first MAC address is the same as a second MAC address of a third device, that establishment of the unicast connection between the second device and the first device is abnormal, wherein the third device is a device that requests to establish a unicast connection to the first device;
• determine, based on a determining result indicating that the security mechanism does not match a security mechanism supported by the first device, that establishment of the unicast connection between the second device and the first device is abnormal;
• or
• determine, based on a determining result indicating that a message structure of the first message is incorrect, that establishment of the unicast connection between the second device and the first device is abnormal.

An apparatus, comprising:

• at least one processor;
• and
• one or more memories coupled to the at least one processor and storing programming instructions that, when executed by the at least one processor, cause the apparatus to:
• send a first message to a first device, wherein the first message is used to request the first device to establish a unicast connection to a second device, and the first message carries a first medium access control (MAC) address, a first address identifier, and a security mechanism of the second device;
• receive a second message sent by the first device, wherein the second message carries at least one MAC address, at least one address identifier, and an error identifier indicating a reason why establishment of the unicast connection is abnormal;
• determine, based on the second message, that establishment of the unicast connection between the second device and the first device is abnormal;
• and
• perform an abnormality handling operation based on the error identifier,
• wherein the second message further comprises a dedicated application identifier indicating that establishment of the unicast connection is abnormal, the dedicated application identifier is carried in an application identifier (AID) field in a dedicated short message (DSM) message frame of the second message, and
• wherein the programming instructions, when executed by the at least one processor, cause the apparatus to:
• when content carried in a destination MAC address field of the second message comprises a converted value of the dedicated application identifier, the at least one MAC address comprises the first MAC address, and the at least one address identifier comprises the first address identifier, determine that establishment of the unicast connection between the second device and the first device is abnormal.