Method and system of wireless communications

• US 9,713,178 B2
• Filed: 09/21/2015
• Issued: 07/18/2017
• 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:
  US14/859,774
• Publication Number:
  US 20160081126A1
• Time in Patent Office: 666 Days
• 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. User equipment configured for uplink establishment in wireless cellular communications, the user equipment comprising:

a processor configured to determine whether a requested uplink connection relates to a packet switched connection or a circuit switched connection;

upon determining the connection is for a circuit switched connection, the processor is further configured to;

determine a delay parameter, wherein the delay parameter is a pseudo-randomly generated delay parameter;

apply a delay corresponding to the determined delay parameter; and

an interface configured to;

upon expiration of the applied delay parameter, transmit a channel request message for a connection that is for a circuit switched connection; and

transmit a channel request message for a connection that is for a packet switched connection without applying a delay parameter.

2. The user equipment of claim 1, wherein the wireless cellular communications comprise persistent transmission scheduling.

3. The user equipment of claim 1, wherein the processor is further configured to control a timer T3120 configured based on the delay parameter.

4. The user equipment of claim 3, wherein the processor is further configured to verify that the timer T3120 has lapsed.

5. The user equipment of claim 1, wherein the processor is further configured to configure timer T3120 to comprise 0 seconds of delay for a connection that is for a packet switched connection.

6. The user equipment of claim 1, wherein:

the processor is further configured to;

determine the channel request message failed;

upon determining the channel request message failed;

determine a second delay parameter for a circuit switched connection, wherein the second delay parameter is a pseudo-randomly generated delay parameter;

apply a second delay corresponding to the determined second delay parameter; and

the interface is further configured to;

upon expiration of the applied second delay parameter, re-transmit the channel request message for a circuit switched connection; and

re-transmit the channel request for a packet switched connection message without applying a delay parameter.

7. A mobile station configured for uplink establishment in wireless cellular communications, the mobile station comprising:

a processor configured to determine whether a requested uplink connection relates to a packet switched connection or a circuit switched connection;

upon determining the connection is for a circuit switched connection, the processor is further configured to;

determine a delay parameter, wherein the delay parameter is a pseudo-randomly generated delay parameter;

apply a delay corresponding to the determined delay parameter; and

an interface configured to;

upon expiration of the applied delay parameter, transmit a channel request message for a connection that is for a circuit switched connection; and

transmit a channel request message for a connection that is for a packet switched connection without applying a delay parameter.

8. The mobile station of claim 7, wherein the wireless cellular communications comprise persistent transmission scheduling.

9. The mobile station of claim 7, wherein the processor is further configured to control a timer T3120 configured based on the delay parameter.

10. The mobile station of claim 9, wherein the processor is further configured to verify that the timer T3120 has lapsed.

11. The mobile station of claim 9, wherein the processor is further configured to configure timer T3120 to comprise 0 seconds of delay for a connection that is for a packet switched connection.

12. The mobile station of claim 7, wherein:

the processor is further configured to;

determine the channel request message failed;

upon determining the channel request message failed and that the uplink connection relates to a circuit switched connection;

determine a second delay parameter for a circuit switched connection, wherein the second delay parameter is a pseudo-randomly generated delay parameter;

apply a second delay corresponding to the determined second delay parameter; and

the interface is further configured to;

upon expiration of the applied second delay parameter, re-transmit the channel request message for a circuit switched connection; and

upon determining the channel request message failed and that the uplink connection relates to a packet switched connection re-transmit the channel request for a packet switched connection message without applying a delay parameter.

13. The mobile station of claim 7, wherein the pseudo-random delay is selected from a range of values including 0.

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

determining whether a requested uplink connection relates to a packet switched connection or a circuit switched connection;

upon determining the connection is for a circuit switched connection;

determining a delay parameter, wherein the delay parameter is a pseudo-randomly generated delay parameter;

applying a delay corresponding to the determined delay parameter; and

an interface configured to;

upon expiration of the applied delay parameter, transmitting a channel request message for a connection that is for a circuit switched connection; and

upon determining the connection is for a packet switched connection, transmitting a channel request message for a connection that is for a packet switched connection without applying a delay parameter.

15. The method of claim 14, wherein the wireless cellular communications comprise persistent transmission scheduling.

16. The method of claim 14, further comprising configuring a timer T3120 based on the delay parameter.

17. The method of claim 16, further comprising verifying that the timer T3120 has lapsed.

18. The method of claim 16, further comprising configuring timer T3120 to comprise 0 seconds of delay for a connection that is for a packet switched connection.

19. The method of claim 14, further comprising:

determining the channel request message failed;

upon determining the channel request message failed and that the uplink connection relates to a circuit switched connection;

determining a second delay parameter for a circuit switched connection, wherein the second delay parameter is a pseudo-randomly generated delay parameter;

applying a second delay corresponding to the determined second delay parameter; and

upon expiration of the applied second delay parameter, re-transmitting the channel request message for a circuit switched connection; and

upon determining the channel request message failed and that the uplink connection relates to a packet switched connection re-transmitting the channel request for a packet switched connection message without applying a delay parameter.

20. The method of claim 14, wherein the pseudo-random delay is selected from a range of values including 0.