Method and apparatus for switching channel configurations for a radio bearer

• US 20060062182A1
• Filed: 09/20/2005
• Published: 03/23/2006
• Est. Priority Date: 09/22/2004
• Status: Abandoned Application

• Current Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Original Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Inventors: Terry, Stephen E.
• Application Number:
  US11/230,407
• Publication Number:
  US 20060062182A1
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 36/06 Reselecting a communication resource in the serving access point
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

A method and apparatus for switching channel configurations for a radio bearer in a wireless communication system is disclosed. The wireless communication system supports one or more different channel types for transporting user data between a wireless transmit/receive unit (WTRU) and a network. The WTRU receives and stores several channel configurations for transport channels (TrCHs) and physical channels in the WTRU. The WTRU maps a radio bearer activating one of the stored channel configurations. Subsequently, the WTRU remaps the radio bearer activating another channel configuration among the stored channel configurations if it is determined that switching a channel configuration is favorable.

Claims

1. In a wireless communication system including at least one wireless transmit/receive unit (WTRU) and a network, the WTRU including a memory for storing channel configurations, a method for switching channel configurations for a radio bearer (RB) which supports at least one connection between the WTRU and the network, the method comprising:

the WTRU receiving a plurality of channel configurations from the network;

the WTRU for storing the received channel configurations in the memory;

the WTRU mapping an RB to a first one of the stored channel configurations to activate the first channel configuration; and

the WTRU subsequently remapping the RB to a second one of the stored channel configurations to activate the second channel configuration.

2. The method of claim 1 wherein the channel configurations support a dedicated channel (DCH).

3. The method of claim 1 wherein the channel configurations support a high speed downlink packet access (HSDPA) channel.

4. The method of claim 1 wherein the channel configurations support a high speed uplink packet access (HSUPA) channel.

5. The method of claim 1 wherein each of the channel configurations stored in the memory of the WTRU includes at least one transport channel (TrCH) and at least one physical channel.

6. The method of claim 5 wherein a unique identification is assigned to the TrCH and the physical channel of the channel configuration.

7. The method of claim 6 wherein a coded composite transport channel (CCTrCH) identification is used to identify the TrCH and the physical channel.

8. The method of claim 1 wherein the RB is remapped each time support for high speed downlink packet access is required to be enabled.

9. The method of claim 1 wherein the RB is remapped each time support for high speed downlink packet access is required to be disabled.

10. The method of claim 1 wherein the RB is remapped by explicit signaling from the network.

11. The method of claim 10 wherein the explicit signaling is transmitted by a radio network controller (RNC).

12. The method of claim 1 wherein the network is a universal terrestrial radio access network (UTRAN).

13. The method of claim 1 wherein the network is a core network (CN).

14. In a wireless communication system including a network, at least one wireless transmit/receive unit (WTRU) for switching channel configurations for a radio bearer (RB) which supports at least one connection between the WTRU and the network, the WTRU comprising:

a receiver for receiving a plurality of channel configurations from the network;

a memory for storing the received channel configurations; and

a controller for mapping an RB to a first one of the stored channel configurations to activate the first channel configuration, and subsequently remapping the RB to a second one of the stored channel configurations to activate the second channel configuration.

15. The WTRU of claim 14 wherein the channel configurations support a dedicated channel (DCH).

16. The WTRU of claim 14 wherein the channel configurations support a high speed downlink packet access (HSDPA) channel.

17. The WTRU of claim 14 wherein the channel configurations support a high speed uplink packet access (HSUPA) channel.

18. The WTRU of claim 14 wherein each of the channel configurations stored in the memory of the WTRU includes at least one transport channel (TrCH) and at least one physical channel.

19. The WTRU of claim 18 wherein a unique identification is assigned to the TrCH and the physical channel of the channel configuration.

20. The WTRU of claim 19 wherein a coded composite transport channel (CCTrCH) identification is used to identify the TrCH and the physical channel.

21. The WTRU of claim 14 wherein the RB is remapped each time support for high speed downlink packet access is required to be enabled.

22. The WTRU of claim 14 wherein the RB is remapped each time support for high speed downlink packet access is required to be disabled.

23. The WTRU of claim 14 wherein the RB is remapped by explicit signaling from the network.

24. The WTRU of claim 14 wherein the explicit signaling is transmitted by a radio network controller (RNC).

25. The WTRU of claim 14 wherein the network is a universal terrestrial radio access network (UTRAN).

26. The WTRU of claim 14 wherein the network is a core network (CN).

27. In a wireless communication system including a network and at least one wireless transmit/receive unit (WTRU), an integrated circuit (IC) incorporated in the WTRU for switching channel configurations for a radio bearer (RB) which supports at least one connection between the WTRU and the network, the IC comprising:

a receiver for receiving a plurality of channel configurations from the network;

a memory for storing the received channel configurations; and

a controller for mapping an RB to a first one of the stored channel configurations to activate the first channel configuration, and subsequently remapping the RB to a second one of the stored channel configurations to activate the second channel configuration.

28. The IC of claim 27 wherein the channel configurations support a dedicated channel (DCH).

29. The IC of claim 27 wherein the channel configurations support a high speed downlink packet access (HSDPA) channel.

30. The IC of claim 27 wherein the channel configurations support a high speed uplink packet access (HSUPA) channel.

31. The IC of claim 27 wherein each of the channel configurations stored in the memory of the WTRU includes at least one transport channel (TrCH) and at least one physical channel.

32. The IC of claim 31 wherein a unique identification is assigned to the TrCH and the physical channel of the channel configuration.

33. The IC of claim 32 wherein a coded composite transport channel (CCTrCH) identification is used to identify the TrCH and the physical channel.

34. The IC of claim 27 wherein the RB is remapped each time support for high speed downlink packet access is required to be enabled.

35. The IC of claim 27 wherein the RB is remapped each time support for high speed downlink packet access is required to be disabled.

36. The IC of claim 27 wherein the RB is remapped by explicit signaling from the network.

37. The IC of claim 27 wherein the explicit signaling is transmitted by a radio network controller (RNC).

38. The IC of claim 27 wherein the network is a universal terrestrial radio access network (UTRAN).

39. The IC of claim 27 wherein the network is a core network (CN).