Packet switched connections using dedicated channels

• US 7,738,508 B2
• Filed: 07/03/2008
• Issued: 06/15/2010
• 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: Hunkeler, Teresa J., Zaki, Maged M., Zeira, Eldad, Terry, Stephen E., Iacono, Ana Lucia, Stern-Berkowitz, Janet A., Zhang, Guodong
• Primary Examiner(s): Tran; CongVan
• Application Number:
  US12/167,502
• Publication Number:
  US 20080267123A1
• Time in Patent Office: 712 Days
• Field of Search: 370/328, 370/329, 370/229, 370/431, 370/437, 370/252, 370/352, 370/247, 370/251, 370/524, 370/264, 375/225
• US Class Current: 370/524
• 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 wireless transmit/receive unit (WTRU) comprising:

a radio link controller configured to establish a first dedicated channel having a predetermined duration and to disestablish the first dedicated channel at the end of the predetermined duration, the radio link controller further configured to establish a second dedicated channel at the end of the uredetermined duration; and

a receiver configured to receive packet data over the established first and second dedicated channels for the predetermined duration.

2. The WTRU of claim 1 wherein the first and second dedicated channels include a predetermined transmission data rate based on a perceived overhead and an amount of collected packet data.

3. The WTRU of claim 1 wherein the established second dedicated channel has a same transport format combination as the first established dedicated channel.

4. The WTRU of claim 1 wherein the established second dedicated channel has a different transport format combination than the first established dedicated channel.

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

a medium access controller (MAC) configured to schedule data transmissions;

a radio link controller configured to send the MAC protocol data units (PDUs) for data transmission over a specified logical channel; and

a start/stop device configured to start or stop a request for PDUs by the MAC over the specified logical channel in a particular radio frame, wherein the start/stop device is a primitive effectively coupled between a radio resource controller and the MAC.

6. The WTRU of claim 5 wherein on condition that the specified logical channel is started, the specified logical channel is active and when the specified logical channel is stopped, the specified logical channel is inactive.

7. The WTRU of claim 6 wherein on condition that the MAC selects a transmit format combination selection, the MAC considers a buffer occupancy excluding data for inactive channels.

8. A wireless transmit/receive unit (WTRU) comprising:

a radio link controller configured to establish a first dedicated channel having a predetermined duration and to disestablish the first dedicated channel at the end of the predetermined duration, the radio link controller further configured to establish a second dedicated channel at the end of the predetermined duration, wherein the established second dedicated channel has a same transport format combination as the first established dedicated channel; and

a receiver configured to receive packet data over the established first and second dedicated channels for the predetermined duration.

9. A wireless transmit/receive unit (WTRU) comprising:

a radio link controller configured to establish a first dedicated channel having a predetermined duration and to disestablish the first dedicated channel at the end of the predetermined duration, the radio link controller further configured to establish a second dedicated channel at the end of the predetermined duration, wherein the established second dedicated channel has a different transport format combination than the first established dedicated channel; and

a receiver configured to receive packet data over the established first and second dedicated channels for the predetermined duration.

10. A wireless transmit/receive unit (WTRU) comprising:

a medium access controller (MAC) configured to schedule data transmissions, wherein on condition that the MAC selects a transmit format combination selection, the MAC considers a buffer occupancy excluding data for inactive channels;

a radio link controller configured to send the MAC protocol data units (PDUs) for data transmission over a specified logical channel, wherein on condition that the specified logical channel is started, the specified logical channel is active and on condition that the specified logical channel is stopped, the specified logical channel is inactive; and

a start/stop device configured to start or stop a request for PDUs by the MAC over the specified logical channel in a particular radio frame.