Method and system for detailed accounting of packet data

A method of recognizing a transaction for a billing apparatus, comprising:

• receiving a hyper text transfer protocol (HTTP) request from a data service apparatus;
• extracting an access address from the HTTP request;
• generating a first hash value based on the access address and a predetermined Hash function;
• transmitting the HTTP request to a proxy server;
• receiving a converted HTTP response from the proxy server, wherein the converted HTTP response comprises a second hash value and an original HTTP response corresponding to the HTTP request;
• extracting the second hash value from the converted HTTP response;
• comparing the first hash value with the second hash value;
• determining the HTTP request and the converted HTTP response as a transaction if the first hash value is the same as the second hash value, wherein the transaction is a pair of the HTTP request and the converted HTTP response;
• and transmitting the converted HTTP response to the data service apparatus, wherein in order to generate the converted HTTP response the proxy server is configured to:
• receive the HTTP request;
• generate the second hash value based on the access address and the predetermined hash function;
• transmit the HTTP request to the content server corresponding to the access address;
• receive the original HTTP response corresponding to the HTTP request from the content server;
• and generate the converted HTTP response based on the second hash value and the original HTTP response.

A method of generating a billing data at a billing apparatus for use of mobile data services, the method comprising:

• (a) recognizing a transaction based on packet data transmitted between a data service apparatus and a proxy server, wherein the transaction is a pair of a hyper text transfer protocol (HTTP) request and a HTTP response corresponding to the HTTP request;
• (b) generating a basic Internet protocol detail record (IPDR) per a transaction, wherein the basic IPDR comprises a start time and an end time of the transaction, an amount of packet data, and an access address;
• repeating (a) and (b) until the end of a transmission control protocol (TOP) session between the user terminal and the proxy server;
• and generating a combined IPDR from aggregating a plurality of basic IPDRs, wherein the basic IPDRs, classified as a same service group, are combined together, wherein the generating of the combined IPDR comprises:
• recognizing an end of a TCP session;
• (c) checking an end error in one of transactions based on the basic IPDR;
• (d) redefining the start time or the end time of the transaction if there exists the end error;
• (e) classifying the basic IPDR into one of predetermined service groups based on the access address included in the basic IPDR;
• repeating (c) to (e) for all basic IPDRs generated during the connection of a TCP session;
• and
• generating the combined IPDR from aggregating the amount of service use time for each service group, wherein the aggregated service use time is a sum of differences between the end time and the start time of transactions in each service group, wherein the end error is either a first error in which an end of transaction is not recognized or a second error in which when plural transactions occur during one TCP session connection, the end time of preceding transaction occurs after the start time of following transaction, and wherein the redefining the start time or the end time of the transaction if there exists the end error is to set the end time of preceding transaction to be the same as the start time of following transaction.

A billing apparatus for generating billing data for using mobile I data services, the apparatus comprising:

• a recognizing portion configured to recognize a transaction based on a packet data transceived between a data service apparatus and a proxy server, wherein the transaction is a pair of a HTTP request and a HTTP response corresponding to the HTTP request;
• a basic Internet protocol detail record (IPDR) generating portion configured to generate a basic IPDR per a transaction, wherein the basic IPDR comprises a start time and an end time of the transaction, an amount of packet data, and an access address;
• and a combined IPDR generating portion configured to generate a combined IPDR from aggregating a plurality of basic IPDRs, wherein the basic IPDRs, classified as a same service group, are combined together, wherein the combined IPDR generating portion comprises:
• a session manager configured to recognize an end of a TCP session;
• a checking portion configured to check if there is an end error in one of transactions based on the basic IPDR;
• an error correcting portion configured to redefine the start time or the end time of the transaction if there exists the end error;
• a transaction classifying portion configured to classify the basic IPDR into one of predetermined service groups based on the access address included in the basic IPDR;
• and a use time aggregating portion configured to generate the combined IPDR from aggregating the amount of service use time for service groups, wherein the aggregated amount of service use time is a sum of differences between the end time and the start time of transactions in each service group, wherein if the end error is either a first error in which an end of transaction is not recognized or a second error in which when plural transactions occur during one TCP session connection, the end time of preceding transaction occurs after the start time of following transaction, and wherein the error correcting portion sets the end time of the transaction to be the same as the start time of following transaction.

A computer-readable medium including program containing computer-executable instructions for performing a method of generating a combined billing data for each of service groups at a billing apparatus, the method comprising:

• (a) recognizing a transaction based on a packet data being transmitted between a data service apparatus and a proxy server, wherein the transaction is a pair of a hyper text transfer protocol (HTTP) request and a HTTP response corresponding to the HTTP request;
• (b) generating a basic Internet protocol detail record (IPDR) per a transaction, wherein the basic IPDR comprises a start time and an end time of the transaction, an amount of packet data, and an access address;
• repeating (a) and (b) until the end of a transmission control protocol (TCP) session between the user terminal and the proxy server;
• generating a combined IPDR from aggregating a plurality of basic IPDRs, wherein the basic IPDRs, classified as a same service group, are combined together;
• recognizing an end of the TCP session;
• (c) checking an end error in one of transactions based on the basic IPDR;
• (d) redefining the start time or the end time of the transaction if there exists the end error;
• (e) classifying the basic IPDR into one of predetermined service groups based on the access address included in the basic IPDR;
• repeating (c) to (e) for all basic IPDRs generated during the connection of TCP session;
• and
• generating the combined IPDR from aggregating the amount of service use time for each of service groups, wherein the aggregated amount of service use time is a sum of differences between the end time and the start time of transactions in each service group, wherein if the end error is either a first error in which an end of transaction is not recognized or a second error in which when plural transactions occur during one TCP session connection, the end time of preceding transaction occurs after the start time of following transaction, and wherein the error correcting portion sets the end time of the transaction to be the same as the start time of following transaction.