Method and system of wireless communications

• US 9,167,570 B2
• Filed: 11/17/2014
• Issued: 10/20/2015
• 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): Gidado, Rasheed
• Application Number:
  US14/542,707
• Publication Number:
  US 20150071230A1
• Time in Patent Office: 337 Days
• Field of Search: 370/328
• US Class Current: 1/1
• 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. An apparatus of uplink establishment in wireless cellular communications, the apparatus comprising:

a transmitter configured to transmit channel request messages;

a processor, coupled to the transmitter, the processor configured to delay connection initiations depending on connection type, wherein the delaying comprises

delaying, by a pseudo-random delay, transmission of a channel request message for a first type of connection, wherein the pseudo-random delay has a rectangular probability density function or a rectangular probability distribution,

initiating, without delay, transmission of a channel request message for a second type of connection.

2. The apparatus according to claim 1, wherein the first type of connection is a circuit-switched connection and the second type of connection is a packet-switched connection.

3. The apparatus according to claim 1, further comprising a timer for generating the pseudo-random time delay for the first type of connection.

4. The apparatus according to claim 1, wherein the wireless cellular communications comprises a Global System for Mobile Communications (GSM) system with General Packet Radio Service (GPRS) or Enhanced General Packet Radio Service (EGPRS).

5. The apparatus according to claim 1, wherein the apparatus comprises user equipment or a mobile station.

6. A method for uplink establishment in wireless cellular communications, the method comprising:

delaying, using a processor, connection initiations depending on connection type, wherein the delaying comprises;

delaying, by a pseudo-random delay, transmission of a channel request message for a first type of connection, wherein the pseudo-random delay has a rectangular probability density function or a rectangular probability distribution, and

transmitting, without delay, a channel request message for a second type of connection.

7. The method according to claim 6, wherein the first type of connection is a circuit-switched connection and the second type of connection is a packet-switched connection.

8. The method according to claim 6, further comprising generating the pseudo-random time delay for the first type of connection.

9. The method according to claim 8, further comprising disregarding the pseudo-random time delay for packet switched connections.

10. The method according to claim 8, further comprising setting the pseudo-random time delay to zero for packet switched connections.

11. The method according to claim 6, wherein the wireless cellular communication comprises a Global System for Mobile Communications (GSM) system with General Packet Radio Service (GPRS) or Enhanced General Packet Radio Service (EGPRS).

12. The method according to claim 6, wherein delaying, using a processor, connection initiations depending on connection type comprising delaying, using a processor within an apparatus comprising a user equipment or a mobile station performs, connection initiations depending on connection type.

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

14. The apparatus according to claim 8, wherein the timer is set to zero for packet switched connections.