Method and system for selectively reducing call-setup latency through management of paging frequency

• US 7,043,266 B2
• Filed: 02/04/2002
• Issued: 05/09/2006
• Est. Priority Date: 02/04/2002
• Status: Expired due to Term

• Current Assignee: Sprint Spectrum LP (Deutsche Telekom AG)
• Original Assignee: Sprint Spectrum LP (Deutsche Telekom AG)
• Inventors: Zhou, Tong, Chaturvedi, Pawan
• Primary Examiner(s): Gesesse, Tilahun
• Application Number:
  US10/067,028
• Publication Number:
  US 20030190888A1
• Time in Patent Office: 1,555 Days
• Field of Search: 455/517, 455/518, 455/519, 455/520, 455/521, 455/500, 455/507, 455/466, 455/433, 455/445, 455/416, 370/312, 370/462, 370/335, 370/259, 370/338
• US Class Current: 455/519
• CPC Class Codes: H04B 3/36 Repeater circuits H04B3/58 takes precedence
• CPC Class Codes: H04N 21/23406 involving management of server-side video buffer
• CPC Class Codes: H04N 21/2402 Monitoring of the downstream path of the transmission network, e.g. bandwidth available traffic monitoring in data switching networks H04L43/00; monitoring data switching networks utilization H04L43/0876
• CPC Class Codes: H04N 21/44004 involving video buffer management, e.g. video decoder buffer or video display buffer
• CPC Class Codes: H04N 21/6131 involving transmission via a mobile phone network wireless downlink channel access H04W74/006

Abstract

A method and system for selectively reducing call-setup latency. The method and system provides for selectively increasing the paging frequency used for paging certain mobile stations, so as to decrease the time that it takes to establish radio-link connectivity with those mobile stations. The method and system is particularly useful when establishing real-time communication sessions, such as instant chat sessions, but may be useful in other scenarios as well.

Claims

1. A method of initiating a push-to-talk (PTT) communication session between an initiating mobile station and at least one terminating mobile station, the method comprising:

the initiating mobile station receiving an initiating user'"'"'s speech signal and buffering the initiating user'"'"'s speech signal in a mobile station buffer;

while buffering the initiating user'"'"'s speech signal, the initiating mobile station working to establish an initiating RTP leg with a PTT server;

the initiating mobile station buffering the initiating user'"'"'s speech signal until the initiating RTP leg is established;

in response to establishment of the initiating RTP leg with the PTT server, the initiating mobile station transmitting the initiating user'"'"'s speech signal from the mobile station buffer via the initiating RTP leg to the PTT server;

the PTT server receiving the initiating user'"'"'s speech signal and buffering the initiating user'"'"'s speech signal in a PTT server buffer;

while buffering the initiating user'"'"'s speech signal, the PTT server working to establish a terminating RTP leg with a terminating mobile station; and

in response to establishment of the terminating RTP leg with the terminating mobile station, the PTT server transmitting the initiating user'"'"'s speech signal from the PTT server buffer via the terminating RTP leg to the terminating mobile station.

2. The method of claim 1, wherein the initiating mobile station working to establish the initiating RTP leg with the PTT server comprises the initiating mobile station sending a SIP INVITE to the PTT server.

3. The method of claim 1, wherein the PTT server working to establish the terminating RTP leg with the terminating mobile station comprises the PTT sewer sending a SIP INVITE to the terminating mobile station.