MAC multiplexing and TFC selection procedure for enhanced uplink

• US 20060268938A1
• Filed: 04/21/2006
• Published: 11/30/2006
• Est. Priority Date: 04/29/2005
• Status: Active Grant

• Current Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Original Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Inventors: Terry, Stephen E.
• Granted Patent: US 8,116,292 B2
• Time in Patent Office: Days
• US Class Current: 370/477
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/365 Dynamic adaptation of the packet size
• CPC Class Codes: H04W 28/065 using assembly or disassembly of packets
• CPC Class Codes: H04W 72/1268 of uplink data flows
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 8/04 Registration at HLR or HSS [Home Subscriber Server]
• CPC Class Codes: H04W 88/08 Access point devices
• CPC Class Codes: H04W 88/12 Access point controller devices

Abstract

A method implemented in a wireless communication system including a wireless transmit/receive unit (WTRU), a Node-B and a radio network controller (RNC) for quantizing multiplexed data allowed by grants to closely match a selected enhanced uplink transport format combination (E-TFC) transport block size is disclosed. The amount of scheduled and non-scheduled data allowed to be transmitted is quantized so that the amount of data multiplexed into an enhanced uplink (EU) medium access control (MAC-e) protocol data unit (PDU) more closely matches the selected E-TFC transport block size. In an embodiment, the amount of buffered data allowed to be multiplexed by at least one grant, (a serving grant and/or a non-serving grant), is quantized so that the sum of scheduled and non-scheduled data including MAC header and control information multiplexed into a MAC-e PDU more closely matches the selected E-TFC transport block size.

Claims

1. A wideband code division multiple access (W-CDMA) frequency division duplex (FDD) user equipment (UE) comprising:

a medium access control—

dedicated channel (MAC-d) configured to produce MAC-d flows for logical channels for transfer over an enhanced dedicated physical channel (E-DPCH);

an enhanced dedicated channel transport formal combination (E-TFC) selection device configured to receive a power offset and a serving grant and configured to select an E-TFC out of a plurality of supported E-TFCs, the plurality of supported E-TFCs having different granularities, the selected E-TFC is a largest supported E-TFC that does not exceed a size derived from the received serving grant and the provided power offset; and

a multiplexing device configured to receive the selected E-TFC and the MAC-d flows and configured to multiplex data of the MAC-d flows into an medium access control enhanced dedicated channel packet data unit (MAC-e PDU) having a size corresponding to the selected E-TFC.

2. The W-CDMA FDD UE of claim 1 further comprising a physical layer device configured to receive the MAC-e PDU from the multiplexing device and configured to format the MAC-e PDU for transfer over the E-DPCH.

3. The W-CDMA FDD UE of claim 1 wherein the E-TFC selection device is configured to receive a non-scheduled grant and wherein the not exceeded size is derived from the received serving grant, the provided power offset and the received non-scheduled grant.

4. The W-CDMA FDD UE of claim 1 wherein the E-TFC selection device is configured such that the not exceeded size is derived from the received serving grant, the provided power offset and provided scheduling information to be multiplexed into the MAC-e PDU.

5. The W-CDMA FDD UE of claim 1 wherein the E-TFC selection device is configured to receive a buffer occupancy for MAC-d flows mapped to the enhanced dedicated channel (E-DCH) and the E-TFC selection device is configured such that the not exceeded size is derived from the received serving grant, the provided power offset and the buffer occupancy.

6. The W-CDMA FDD UE of claim 1 wherein the E-TFC selection device is configured to receive a non-scheduled grant wherein the not exceeded size is derived from the received serving grant, the provided power offset, the received non-scheduled grant and provided scheduling information to be multiplexed into the MAC-e PDU.

7. The W-CDMA FDD UE of claim 1 wherein the E-TFC selection device is configured such that the not exceeded size is derived from the received serving grant, the provided power offset and provided MAC header information and control signaling overhead for transfer in a MAC-enhanced dedicated channel (MAC-e) PDU.

8. The W-CDMA FDD UE of claim 1 wherein the E-TFC selection device is configured to receive a non-scheduled grant and the E-TFC selection device is configured such that the not exceeded size is derived from the received serving grant, the provided power offset, the received non-scheduled grant and provided MAC header information and control signaling overhead for transfer in a MAC-enhanced dedicated channel (MAC-e) PDU.

9. The W-CDMA FDD UE of claim 8 wherein the multiplexing device is configured to multiplex the MAC header information and control signaling overhead into the MAC-e PDU with the MAC-d flows.

10. The W-CDMA FDD UE of claim 9 wherein the multiplexing device is configured to multiplex padding into the MAC-e PDU when a size of the MAC header information and control signaling overhead combined with the multiplexed MAC-d PDUs is less than a size associated with the selected E-TFC.

11. The W-CDMA FDD UE of claim 10 wherein an amount of the padding is less than a size of a MAC-d PDU.

12. The W-CDMA FDD UE of claim 1 wherein the E-TFC selection device is configured such that the not exceeded size is derived from the received serving grant, the provided power offset and scheduling information and the multiplexing device is configure to multiplex the scheduling information into the MAC-e PDU with the MAC-d flows.

13. The W-CDMA FDD UE of claim 1 comprising a MAC-e/es which comprises the E-TFC selection device and the multiplexing device.

14. A method for transferring data over an enhanced dedicated channel (E-DCH), the method comprising:

receiving a serving grant by a user equipment;

providing data from medium access control—

dedicated channel (MAC-d) flows;

providing a plurality of enhanced dedicated channel transport format combinations (E-TFCs) with differing granularities;

determining supported E-TFCs out of the plurality of E-TFCs;

providing a power offset;

selecting an E-TFC out of the determined supported E-TFCs that is a largest supported E-TFC that does not exceed a size derived from the received serving grant and the provided power offset; and

transmitting the data of the MAC-d flows using the selected E-TFC on the E-DCH by the user equipment.

15. The method of claim 14 further comprising receiving a non-scheduled grant and wherein the not exceeded size is derived from the received serving grant, the provided power offset and the received non-scheduled grant.

16. The method of claim 14 further comprising providing scheduling information and wherein the not exceeded size is derived from the received serving grant, the provided power offset and the provided scheduling information.

17. The method of claim 14 further comprising receiving a non-scheduled grant and providing scheduling information and wherein the not exceeded size is derived from the received serving grant, the provided power offset, the received non-scheduled grant and the provided scheduling information.

18. The method of claim 14 further comprising providing MAC header information and control signaling overhead for transfer in a MAC-enhanced dedicated channel (MAC-e) and wherein the not exceeded size is derived from the received serving grant, the provided power offset and the provided MAC header information and control signaling overhead.

19. The method of claim 14 further comprising receiving a non-scheduled grant and providing MAC header information and control signaling overhead for transfer in a MAC-enhanced dedicated channel (MAC-e) and wherein the not exceeded size is derived from the received serving grant, the provided power offset, the received non-scheduled grant and the provided any MAC header information and control signaling overhead.

20. The method of claim 14 further comprising multiplexing the MAC-d flows into a MAC-e packet data unit (PDU) having a size of the selected E-TFC.

21. The method of claim 20 wherein MAC header information and control signaling overhead is multiplexed into the MAC-e PDU with the MAC-d flows.

22. The method of claim 21 wherein padding is multiplexed into the MAC-e PDU when a size of the MAC header information and control signaling overhead combined with the multiplexed MAC-d PDUs is less than a size associated with the selected E-TFC.

23. The method of claim 22 wherein an amount of the padding is less than a size of a MAC-d PDU.

24. The method of claim 20 wherein scheduling information is multiplexed into the MAC-e PDU with the MAC-d flows.

25. The method of claim 21 wherein padding is multiplexed into the MAC-e PDU when a size of the scheduling information combined with the multiplexed MAC-d PDUs is less than a size associated with the selected E-TFC.

26. The method of claim 25 wherein an amount of the padding is less than a size of a MAC-d PDU

27. The method of claim 14 wherein the data is transmitted by a user equipment.

28. A wideband code division multiple access (W-CDMA) frequency division duplex (FDD) base station comprising:

a physical layer configured to received an enhanced dedicated physical channel (E-DPCH) and recover medium access control enhanced (MAC-e) packet data unit (PDU) from the received E-DPCH, the MAC-e PDU has a size that corresponds to an E-TFC is a largest supported E-TFC that does not exceed a size derived from the received serving grant and a provided power offset;

a MAC-e/es device configured to receive the MAC-e PDU and demultiplex the MAC-e PDU into at least one medium access control dedicated channel (MAC-d) PDU and the MAC-e/es device is configured to output the MAC-d PDU as at least one logical channel; and

a MAC-d device configured to receive the outputted logical channel.

29. A wideband code division multiple access (W-CDMA) frequency division duplex (FDD) communication system comprising:

at least one user equipment (UE), each UE comprising;

a UE medium access control—

dedicated channel (MAC-d) configured to produce MAC-d flows for logical channels for transfer over an enhanced dedicated physical channel (E-DPCH);

an enhanced dedicated channel transport formal combination (E-TFC) selection device configured to receive a power offset and a serving grant and configured to select an E-TFC out of a plurality of supported E-TFCs, the plurality of supported E-TFCs having different granularities, the selected E-TFC is a largest supported E-TFC that does not exceed a size derived from the received serving grant and the provided power offset; and

a multiplexing device configured to receive the selected E-TFC and the MAC-d flows and configured to multiplex data of the MAC-d flows into an medium access control enhanced dedicated channel packet data unit (MAC-e PDU) having a size corresponding to the selected E-TFC; and

a UE physical layer device configured to receive the MAC-e PDU from the multiplexing device and configured to format the MAC-e PDU for transfer over the E-DPCH; and

a base station comprising;

a base station physical layer configured to receive the E-DPCH and recover the MAC-e PDUs from the received E-DPCH;

a base station MAC-e/es device configured to receive the MAC-e PDUs and demultiplex the MAC-e PDUs into a plurality of medium access control dedicated channel (MAC-d) PDUs and the MAC-e/es device is configured to output the MAC-d PDUs as logical channels; and

a base station MAC-d device configured to receive the outputted logical channels.

30. The W-CDMA FDD system of claim 29 further comprising a UE MAC-e/es which comprises the E-TFC selection device and the multiplexing device.

31. The W-CDMA FDD system of claim 29 wherein the E-TFC selection device is configured to receive a non-scheduled grant and wherein the not exceeded size is derived from the received serving grant, the provided power offset and the received non-scheduled grant.

32. The W-CDMA FDD system of claim 29 wherein the E-TFC selection device is configured such that the not exceeded size is derived from the received serving grant, the provided power offset and provided scheduling information to be multiplexed into the MAC-e PDU.

33. The W-CDMA FDD system of claim 29 wherein the E-TFC selection device is configured to receive a buffer occupancy for MAC-d flows mapped to the enhanced dedicated channel (E-DCH) and the E-TFC selection device is configured such that the not exceeded size is derived from the received serving grant, the provided power offset and the buffer occupancy.

34. The W-CDMA FDD system of claim 29 wherein the E-TFC selection device is configured to receive a non-scheduled grant wherein the not exceeded size is derived from the received serving grant, the provided power offset, the received non-scheduled grant and provided scheduling information to be multiplexed into the MAC-e PDU.

35. The W-CDMA FDD system of claim 29 wherein the E-TFC selection device is configured such that the not exceeded size is derived from the received serving grant, the provided power offset and provided MAC header information and control signaling overhead for transfer in a MAC-enhanced dedicated channel (MAC-e) PDU.

36. The W-CDMA FDD system of claim 29 wherein the E-TFC selection device is configured to receive a non-scheduled grant and the E-TFC selection device is configured such that the not exceeded size is derived from the received serving grant, the provided power offset, the received non-scheduled grant and provided MAC header information and control signaling overhead for transfer in a MAC-enhanced dedicated channel (MAC-e) PDU.

37. The W-CDMA FDD system of claim 36 wherein the multiplexing device is configured to multiplex the MAC header information and control signaling overhead into the MAC-e PDU with the MAC-d flows.

38. The W-CDMA FDD system of claim 37 wherein the multiplexing device is configured to multiplex padding into the MAC-e PDU when a size of the MAC header information and control signaling overhead combined with the multiplexed MAC-d PDUs is less than a size associated with the selected E-TFC.

39. The W-CDMA FDD system of claim 38 wherein an amount of the padding is less than a size of a MAC-d PDU.

40. The W-CDMA FDD system of claim 29 wherein the E-TFC selection device is configured such that the not exceeded size is derived from the received serving grant, the provided power offset and scheduling information and the multiplexing device is configure to multiplex the scheduling information into the MAC-e PDU with the MAC-d flows.