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Method and apparatus for radio link synchronization and power control in CELL—FACH and idle mode
US9036617B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9036617-B2 |
| Application number | US-201314090643-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 26, 2013 |
| Priority date | Dec 31, 2007 |
| Publication date | May 19, 2015 |
| Grant date | May 19, 2015 |
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Abstract
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A method and apparatus for radio link synchronization and power control in CELL_FACH state and idle mode are disclosed. A wireless transmit/receive unit (WTRU) transmits a random access channel (RACH) preamble and receives an acquisition indicator acknowledging the RACH preamble via an acquisition indicator channel (AICH) and an index to an enhanced dedicated channel (E-DCH) resource. The WTRU determines a start of an E-DCH frame. An F-DPCH timing offset is defined with respect to one of the RACH access slot and an AICH access slot carrying the acquisition indicator. A relative F-DPCH timing offset may be signaled to the WTRU and the WTRU may determine a start of an E-DCH frame based on the relative F-DPCH timing offset and timing of an AICH access slot including the acquisition indicator. The WTRU may transmit a dedicated physical control channel (DPCCH) power control preamble before starting an E-DCH transmission.
First claim
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What is claimed is: 1. A method for radio link synchronization and power control in CELL_FACH state, the method comprising: transmitting a system information block (SIB) including an offset value, value, wherein the SIB includes an indicator of a subset of access slots associated with a random access channel (RACH) preamble; receiving the RACH preamble in at least one of the subset of access slots; transmitting an acquisition indicator in response to the RACH preamble; trans…
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- What does patent US9036617B2 cover?
- A method and apparatus for radio link synchronization and power control in CELL_FACH state and idle mode are disclosed. A wireless transmit/receive unit (WTRU) transmits a random access channel (RACH) preamble and receives an acquisition indicator acknowledging the RACH preamble via an acquisition indicator channel (AICH) and an index to an enhanced dedicated channel (E-DCH) resource. The WTRU …
- Who is the assignee on this patent?
- Interdigital Patent Holdings
- What technology area does this patent fall under?
- Primary CPC classification H04W52/50. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 19 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).