Packet switched connections using dedicated channels

• US 7,397,790 B2
• Filed: 05/29/2003
• Issued: 07/08/2008
• Est. Priority Date: 05/29/2002
• Status: Expired due to Fees

• Current Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Original Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Inventors: Zaki, Maged, Zeira, Eldad, Terry, Stephen E., Iacono, Ana Lucia, Zhang, Guodong, Hunkeler, Teresa Joanne, Stern-Berkowitz, Janet
• Primary Examiner(s): Tran; Congvan
• Application Number:
  US10/447,871
• Publication Number:
  US 20040114574A1
• Time in Patent Office: 1,867 Days
• Field of Search: 370/352, 370/247, 370/253, 370/251, 370/524, 375/225, 455/352, 455/247, 455/251
• US Class Current: 370/352
• CPC Class Codes: H04L 1/0002 by adapting the transmission rate
• CPC Class Codes: H04L 1/0017 where the mode-switching is based on Quality of Service requirement
• CPC Class Codes: H04W 28/14 using intermediate storage
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 28/22 Negotiating communication rate
• CPC Class Codes: H04W 52/08 Closed loop power control
• CPC Class Codes: H04W 52/10 Open loop power control
• CPC Class Codes: H04W 52/242 taking into account path loss
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/52 based on load
• CPC Class Codes: H04W 72/542 using measured or perceived quality
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 76/30 Connection release
• CPC Class Codes: H04W 76/38 triggered by timers

Abstract

A temporary (temp) dedicated channel (DCH) is used to support communications. The temp-DCH channel is a channel that is assigned to a user having a set duration. After the duration expires, the channel is automatically released to the user. Embodiments of the invention relate to establishing the temp-DCH channel, determining the data rate and duration of the channel. Other embodiments relate to establishing back-to-back temp-DCH channels and the implementation details of these embodiments. Additionally, one embodiment relates to adding a start/stop function to the medium access controller which can be used in conjunction with temp-DCH as well as other applications.

Claims

1. A method for establishing a temporary dedicated channel in wireless communication system, the method comprising:

collecting packet data requiring wireless transmission;

based on an amount of the packet data, determining a transmission data rate for the data;

determining a duration for a dedicated channel based on the determined transmission data rate;

sending the collected packet data over the dedicated channel for the determined duration; and

after the set duration expires, releasing the dedicated channel; and

wherein at the expiration of the set duration, a second dedicated channel transmission occurs, the second dedicated channel transmission having a same transport format combination than the collected racket data transmission over the dedicated channel.

2. The method of claim 1 wherein the determined transmission data rate is also based on a perceived overhead.

3. The method of claim 1 wherein the second dedicated channel transmission has a different transport format combination than the collected packet data transmission over the dedicated channel.

4. The method of claim 1 further comprising making a request for the second dedicated channel transmission prior to expiration of the duration.

5. A wireless transmit/receive unit (WTRU), the WTRU comprising:

a receiver;

a transmitter; and

a radio link controller (RLC) in communication with the receiver and the transmitter, wherein the RLC is configured to collect packet data requiring wireless transmission, determine a transmission data rate for the data based on an amount of the packet data, determine a duration for a dedicated channel based on the determined transmission data rate, send the collected packet data over the dedicated channel for the determined duration via the transmitter, release the dedicated channel after the set duration expires, and at the expiration of the set duration, transmit a second dedicated channel transmissions, wherein the second dedicated channel transmission having a same transport format combination than the collected packet data transmission over the dedicated channel.