Patent ID: 11870560
Assignee: ZHEJIANG LAB
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. The method according to claim 1, wherein said receiving a message, and matching the message with the network flow table comprises: receiving and analyzing the message to obtain an upper value and a lower limit value of longitude and latitude coverage of the target addressing area; comparing the upper limit value and the lower limit value of the longitude coverage and the latitude coverage with the matching rules in the network flow table, and performing comparison according to the geographical areas corresponding to the matching rules from small to large, wherein when the upper limit and the lower limit of the longitude coverage in the message belong to the longitude range in the matching rules and the upper limit and the lower limit of the latitude coverage in the message belong to the latitude range in the matching rules, the message hits the matching rule, and once the message hits a certain matching rule, the message is no longer compared with other matching rules.