Method and system for uplink establishment in a wireless cellular communication

• US 8,144,610 B2
• Filed: 04/06/2005
• Issued: 03/27/2012
• Est. Priority Date: 04/06/2005
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Sundberg, Krister
• Primary Examiner(s): Ngo, Ricky
• Assistant Examiner(s): Gidado, Rasheed
• Application Number:
  US11/910,845
• Publication Number:
  US 20090073890A1
• Time in Patent Office: 2,547 Days
• Field of Search: 370/252, 370/349, 370/352
• US Class Current: 370/252
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 74/04 Scheduled access hybrid access H04W74/02
• CPC Class Codes: H04W 74/0866 using a dedicated channel for access
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 76/15 Setup of multiple wireless link connections
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

The present invention relates to wireless communications. More especially it relates to wireless packet data communications. Particularly it relates to latency reduction by distinguishing connection initiation of circuit switched and packet switched connections, respectively.

Claims

1. A method of uplink establishment in wireless cellular communications, the method comprising:

delaying, using a processor, a connection initiation depending on connection type, further comprising

delaying, using the processor, by a random distributed delay, a channel request message for circuit switched connections, wherein

the random distributed delay further comprises a pseudo-random time delay for circuit switched connections, and

the pseudo-random time delay has a rectangular probability density function or a rectangular probability distribution, and

sending, using the processor, a channel request message for packet switched connections without delay.

2. The method according to claim 1 characterized in that the cellular communications system is a Global System for Mobile Communications (GSM) system with General Packet Radio Service (GPRS) or Enhanced General Packet Radio Service (EGPRS).

3. The method according to claim 2, wherein timer T3120 is disregarded for packet switched connections.

4. The method according to claim 2, wherein timer T3120 is set equal to zero for packet switched connections.

5. An apparatus of uplink establishment in wireless cellular communications, the apparatus comprising:

means for delaying a connection initiation depending on connection type, further comprising

means for delaying, by a random distributed delay, a channel request message for circuit switched connections, and

means for sending a channel request message for packet switched connections without delay; and

a timer for generating a pseudo-random time delay for circuit switched connections, wherein

the pseudo-random time delay has a rectangular probability density function or a rectangular probability distribution.

6. The apparatus according to claim 5, further comprising

a timer for generating a pseudo-random time delay for circuit switched connections and for not generating the time delay for packet switched connections.

7. The apparatus according to claim 5, wherein the cellular communications system is a Global System for Mobile Communications (GSM) system with General Packet Radio Service (GPRS) or Enhanced General Packet Radio Service (EGPRS).

8. The apparatus according to claim 7, wherein timer T3120 is disregarded for packet switched connections.

9. The apparatus according to claim 7, wherein timer T3120 is set equal to zero for packet switched connections.

10. The apparatus according to claim 5, wherein the apparatus is included in or is user equipment or a mobile station.