Reduced data session establishment time in CDMA-2000 networks
View Patent ↗Systems and methods for establishing and operating data sessions between mobile subscriber units and packet data servers on a wireless communication network are presented. Some aspects described herein are directed to preventing the loss of an initial configuration request signal (e.g. under the LCP protocol) from a packet data server to a mobile subscriber prior to successful establishment of a radio air link to the mobile subscriber. Other aspects are directed to detecting the presence or absence of a radio air link to the mobile subscriber as a determinant of whether the packet data server is to send a configuration request signal to the mobile subscriber, or whether the packet data server should withhold the request signal until the air link is established. Some or all aspects presented are suitable for use in 3G or CDMA-2000 systems using the A10/A11 communication control protocol and the PPP data communication protocol.
1. A method for establishing a data communication session with a mobile subscriber in a wireless communication network, comprising:
receiving a registration request at a packet data server to register a data communication session between the packet data server and the mobile subscriber prior to a radio air link being established with the mobile subscriber;
sending a reply signal from the packet data server to trigger the establishment of a radio air link between the base station and the mobile subscriber to allow communication between the packet data server and the mobile subscriber;
waiting a time period after the registration request and the reply to allow establishment of the radio air link before sending a link configuration request to the mobile subscriber, wherein the link configuration request is used to set up a data link connection between the mobile subscriber and the packet data server; and
establishing a data communication session between the mobile subscriber and the packet data server using the data link connection.
2. The method of claim 1 , further comprising calculating a dynamic duration for the set time period based on network conditions.
3. The method of claim 1 , wherein waiting the time period comprises providing a fixed wait time period having a duration between 10 milliseconds and 1 second.
4. The method of claim 1 , wherein waiting the time period comprises providing a fixed wait time period having a duration of approximately 100 milliseconds.
5. The method of claim 1 , wherein registering the data session comprises registering the data session according to an A11 protocol compatible with a Point-to-Point Protocol (PPP) communication network.
6. The method of claim 1 , wherein sending the link configuration request signal comprises sending a Point-to-Point Protocol (PPP) based signal.
7. A method for communicating with a mobile subscriber in a wireless communication network, comprising:
receiving a request at a packet data server to register a data session between a mobile subscriber and the packet data server prior to a radio air link being established with the mobile subscriber;
sending a signal from the packet data server to trigger the establishment of a radio air link between the base station and the mobile subscriber to allow communication between the packet data server and the mobile subscriber;
sending an initial link configuration signal for the mobile subscriber from the packet data server, wherein a link configuration signal is used to establish a data link connection between the mobile subscriber and the packet data server; and
waiting a first set time period from sending the initial link configuration request signal for the mobile subscriber before sending a second initial link configuration request signal, wherein the first set time period provides additional time for establishment of the radio air link.
8. The method of claim 7 , further comprising providing a second wait time period triggered by a data communication error event before sending a link configuration request signal to the mobile subscriber.
9. The method of claim 7 , further comprising repeatedly waiting a time equal to the first wait time period until an air link to the mobile subscriber is successfully established.
10. The method of claim 8 , wherein the link configuration signal is a Point-to-Point Protocol (PPP) based communication protocol which upon configuration establishes a PPP connection between the mobile subscriber and the packet data server.
11. The method of claim 7 , wherein waiting the first set time period comprises waiting a first time period having a duration between 10 milliseconds and 1 second.
12. The method of claim 7 , wherein the radio air link allows the establishment of a data communication session.
13. A system for wireless communication, comprising:
a packet data server;
a communication network adapted for carrying control and data packets between a mobile subscriber and the packet data server;
a radio air link portion of said communication network, the radio air link having associated therewith an air link establishment delay time; and
said packet data server including a processor that triggers the establishment of the radio air link and attempts sending a link configuration request signal over said communication network responsive to an indication that said radio air link is ready to carry said link configuration request signal to said mobile subscriber to establish a first Point-to-Point Protocol (PPP) connection.
14. The system of claim 13 , wherein the indication comprises a time-based signal indicating that a wait time exceeding the air link establishment delay time has elapsed.
15. The system of claim 13 , wherein the indication comprises an event-based signal indicating that the air link has been successfully established to the mobile subscriber.
16. The method of claim 1 , further comprising buffering data packets prior to the successful establishment of a radio air link to the mobile subscriber.
17. The method of claim 1 , wherein the time period is determined from the packet data server pinging a node and determining a network propagation time.