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During a radio link setup or reconfiguration or addition procedures, a serving radio network controller SRNC sends a request or prepare message to a drift radio network controller DRNC with a slot format information element IE, to which the DRNC sends a reply. During a physical channel reconfigurati

During a radio link setup or reconfiguration or addition procedures, a serving radio network controller SRNC sends a request or prepare message to a drift radio network controller DRNC with a slot format information element IE, to which the DRNC sends a reply. During a physical channel reconfiguration process the DRNC sends a request to the SRNC with the slot format IE. In all cases, the DRNC uses the IE to determine the slot format for its fractional dedicated physical channel, and reconfigures it with the node B according to the IE.

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1. A method comprising: sending from a drift network element to a serving network element a request that comprises an indication of a slot format for a fractional dedicated channel; andin response to the request being granted, the drift network element setting the slot format of the fractional dedic

1. A method comprising: sending from a drift network element to a serving network element a request that comprises an indication of a slot format for a fractional dedicated channel; andin response to the request being granted, the drift network element setting the slot format of the fractional dedicated channel according to the indication so that the slot format of the fractional dedicated channel can be restructured by the drift network element in accordance with the request sent from the drift network element to the serving network element. 2. The method of claim 1, wherein the drift network element comprises a drift radio network controller, the serving network element comprises a serving radio network controller, the fractional dedicated channel is a fractional dedicated physical channel and the indication comprises a fractional dedicated physical channel slot format information element. 3. The method of claim 2, wherein the request is a PHYSICAL CHANNEL RECONFIGURATION REQUEST message and the request is granted by a PHYSICAL CHANNEL RECONFIGURATION COMMAND message received by the drift radio network controller from the serving radio network controller. 4. An apparatus comprising a processor and a memory storing a program; wherein the processor is configured with the memory and the program to cause the apparatus at least: to send over a communications interface to a serving network element a request that comprises an indication of a slot format for a fractional dedicated channel;and in response to the request being granted, to set the slot format of the fractional dedicated channel according to the indication so that the slot format of the fractional dedicated channel can be reconfigured for the serving network by the apparatus in accordance with the request sent from the apparatus to the serving network element. 5. The apparatus of claim 4, wherein the apparatus comprises a drift radio network controller, the serving network element comprises a serving radio network controller, the fractional dedicated channel is a fractional dedicated physical channel and the indication comprises a fractional dedicated physical channel slot format information element. 6. The apparatus of claim 5, wherein the request is a PHYSICAL CHANNEL RECONFIGURATION REQUEST message and the request is granted by a PHYSICAL CHANNEL RECONFIGURATION COMMAND message received at the apparatus from the serving radio network controller. 7. A method comprising: receiving at a serving network element from a drift network element a request that comprises an indication of a slot format for a fractional dedicated channel; andgranting the request and the serving network element switching a slot format of the fractional dedicated channel to the slot format of the indication so that the slot format of the fractional dedicated channel can be restructured by the drift network element in accordance with the request sent from the drift network element to the serving network element. 8. The method of claim 7, wherein the drift network element comprises a drift radio network controller, the serving network element comprises a serving radio network controller, the fractional dedicated channel is a fractional dedicated physical channel and the indication comprises a fractional dedicated physical channel slot format information element. 9. The method of claim 8, wherein the request is a PHYSICAL CHANNEL RECONFIGURATION REQUEST message and the request is granted by a PHYSICAL CHANNEL RECONFIGURATION COMMAND message sent from the serving radio network controller to the drift radio network controller. 10. A memory tangibly storing a program of computer readable instructions comprising: code executed in response to receiving at a serving network element from a drift network element a request that comprises an indication of a slot format for a fractional dedicated channel, for granting the request and the serving network element switching a slot format of the fractional dedicated channel to the slot format of the indication so that the slot format of the fractional dedicated channel can be restructured by the drift network element in accordance with the request sent from the drift network element to the serving network element. 11. An apparatus comprising a processor and a memory storing a program; wherein the processor is configured with the memory and the program to cause the apparatus at least: to receive over a communications interface from a drift network element a request that comprises an indication of a slot format for a fractional dedicated channel;and to send over the communications interface a grant of the request and is further configured to switch a slot format of the fractional dedicated channel to the slot format of the indication so that the slot format of the fractional dedicated channel can be restructured by the drift network element in accordance with the request sent from the drift network element over the communications interface. 12. The apparatus of claim 11, wherein the apparatus comprises a serving radio network controller, the drift network element comprises a drift radio network controller, the fractional dedicated channel is a fractional dedicated physical channel and the indication comprises a fractional dedicated physical channel slot format information element. 13. The apparatus of claim 12, wherein the request is a PHYSICAL CHANNEL RECONFIGURATION REQUEST message and the request is granted by a PHYSICAL CHANNEL RECONFIGURATION COMMAND message sent from the apparatus to the serving radio network controller. 14. A method comprising: receiving at a drift network element from a serving network element a message that comprises an indication of a slot format for a fractional dedicated channel; andusing the indication to determine the slot format of the fractional dedicated channel and sending a reply to the message to indicate the determined slot format of the fractional dedicated channel so that the slot format of the fractional dedicated channel can be restructured in accordance with the message. 15. The method of claim 14, wherein the drift network element is a drift radio network controller, the serving network element is a serving radio network controller, the fractional dedicated channel is a fractional dedicated physical channel, and the indication is a fractional dedicated physical channel slot format information element. 16. The method of claim 15, wherein the respective message and reply are selected from the group: RADIO LINK SETUP REQUEST and RADIO LINK SETUP RESPONSE; RADIO LINK ADDITION REQUEST and RADIO LINK ADDITION RESPONSE; RADIO LINK RECONFIGURATION REQUEST and RADIO LINK RECONFIGURATION RESPONSE; and RADIO LINK RECONFIGURATION PREPARE and RADIO LINK RECONFIGURATION READY. 17. The method of claim 16, wherein at least one of the message and reply comprises a fractional dedicated physical channel frame offset information element that indicates offset of a frame of the fractional dedicated physical channel relative to a common control physical channel, the method further comprising the drift radio network controller setting timing of the fractional dedicated physical channel according to the received fractional dedicated physical channel frame offset information element. 18. The method of claim 15, further comprising the drift radio network controller re-configuring the fractional dedicated physical channel in a Node B according to the determined slot format. 19. An apparatus comprising a processor and a memory storing a program, wherein the processor is configured with the memory and the program to cause the apparatus at least: to receive from a serving network element a message that comprises an indication of a slot format for a fractional dedicated channel; andto use the indication to determine the slot format of the fractional dedicated channel and to send a reply to the message to indicate the determined slot format of the fractional dedicated channel format so that the slot format of the fractional dedicated channel can be restructured in accordance with the message. 20. The apparatus of claim 19, wherein the apparatus comprises a drift radio network controller, the serving network element is a serving radio network controller, the fractional dedicated channel is a fractional dedicated physical channel, and the indication is a fractional dedicated physical channel slot format information element. 21. The apparatus of claim 20, wherein the respective message and reply are selected from the group: RADIO LINK SETUP REQUEST and RADIO LINK SETUP RESPONSE; RADIO LINK ADDITION REQUEST and RADIO LINK ADDITION RESPONSE; RADIO LINK RECONFIGURATION REQUEST and RADIO LINK RECONFIGURATION RESPONSE; and RADIO LINK RECONFIGURATION PREPARE and RADIO LINK RECONFIGURATION READY. 22. The apparatus of claim 21, wherein at least one of the message and reply comprises a fractional dedicated physical channel frame offset information element that indicates offset of a frame of the fractional dedicated physical channel relative to a common control physical channel, and wherein the processor is further configured to set timing of the fractional dedicated physical channel according to the received fractional dedicated physical channel frame offset information element. 23. The apparatus of claim 19, wherein the processor with the memory and the program is further configured to cause the apparatus at least to re-configure the fractional dedicated physical channel in a Node B according to the determined slot format. 24. A method comprising: sending from a serving network element to a drift network element a message that comprises an indication of a slot format for a fractional dedicated channel; andreceiving a reply to the message indicating that the slot format of the fractional dedicated channel has been restructured in accordance with the message. 25. The method of claim 24, wherein the drift network element is a drift radio network controller, the serving network element is a serving radio network controller, the fractional dedicated channel is a fractional dedicated physical channel, and the indication is a fractional dedicated physical channel slot format information element. 26. The method of claim 25, wherein the respective message and reply are selected from the group: RADIO LINK SETUP REQUEST and RADIO LINK SETUP RESPONSE; RADIO LINK ADDITION REQUEST and RADIO LINK ADDITION RESPONSE; RADIO LINK RECONFIGURATION REQUEST and RADIO LINK RECONFIGURATION RESPONSE; and RADIO LINK RECONFIGURATION PREPARE and RADIO LINK RECONFIGURATION READY. 27. The method of claim 26, wherein at least one of the message and reply comprises a fractional dedicated physical channel frame offset information element that indicates offset of a frame of the fractional dedicated physical channel relative to a common control physical channel. 28. An apparatus comprising a processor and a memory storing a program, wherein the processor is configured to cause the apparatus at least: to send to a drift network element a message that comprises an indication of a slot format for a fractional dedicated channel; andto receive a reply to the message indicating that the slot format of the fractional dedicated channel has been restructured in accordance with the message. 29. The apparatus of claim 28, wherein the apparatus comprises a serving radio network controller, the drift network element is a drift radio network controller, the fractional dedicated channel is a fractional dedicated physical channel, and the indication is a fractional dedicated physical channel slot format information element. 30. The apparatus of claim 29, wherein the respective message and reply are selected from the group: RADIO LINK SETUP REQUEST and RADIO LINK SETUP RESPONSE; RADIO LINK ADDITION REQUEST and RADIO LINK ADDITION RESPONSE; RADIO LINK RECONFIGURATION REQUEST and RADIO LINK RECONFIGURATION RESPONSE; and RADIO LINK RECONFIGURATION PREPARE and RADIO LINK RECONFIGURATION READY. 31. The apparatus of claim 28, wherein at least one of the message and reply comprises a fractional dedicated physical channel frame offset information element that indicates offset of a frame of the fractional dedicated physical channel relative to a common control physical channel.