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Method and apparatus for performing a serving HS-DSCH cell change

A technology for HS-SCCH and cell change, applied to receiver-specific devices, transmission modification based on link quality, channel coding adjustment, etc., which can solve problems such as WTRU not being given enough time and failure to receive switching instructions

Active Publication Date: 2011-08-31
INTERDIGITAL PATENT HLDG INC
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

Also, since the broadcasted message on the SIB can only be repeated according to the repetition factor, the WTRU may not be given enough time to obtain this information
This may result in failure to receive switching commands

Method used

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  • Method and apparatus for performing a serving HS-DSCH cell change
  • Method and apparatus for performing a serving HS-DSCH cell change
  • Method and apparatus for performing a serving HS-DSCH cell change

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Embodiment

[0100] CLAIMS 1. A method for performing a serving HS-DSCH cell change from a source cell to a target cell.

[0101] 2. The method of embodiment 1 comprising the WTRU receiving, storing, and preloading the HS-DSCH configuration for the target cell.

[0102] 3. The method of embodiment 2 further comprising the WTRU detecting event ID with respect to the target cell.

[0103] 4. The method of embodiment 3, further comprising the WTRU starting a timer.

[0104] 5. The method as in any one of embodiments 3-4 further comprising the WTRU using the preloaded HS- DSCH configuration to start monitoring the HS-SCCH on the target cell.

[0105] 6. The method as in any one of embodiments 2-5 further comprising the WTRU determining whether a handover message for the target cell is received.

[0106] 7. The method of embodiment 6 further comprising the WTRU ceasing to monitor the HS-SCCH on the target cell if a handover message for the target cell is received.

[0107] 8. The method acc...

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Abstract

A method and apparatus for performing a serving high speed downlink shared channel (HS-DSCH) cell change from a source cell to a target cell are disclosed. A radio network controller (RNC) may pre-load a wireless transmit / receive unit (WTRU) with HS-DSCH configuration for the target cell. The WTRU receives and stores the pre-loaded HS-DSCH configuration. The WTRU may start monitoring a high speed shared control channel (HS-SCCH) on the target cell using the pre-loaded HS-DSCH configuration for the target cell on a condition that a measurement report is triggered by the event 1D. The WTRU may initiate a timer when the WTRU starts monitoring the HS-SCCH on the target cell and stop monitoring the HS-SCCH on the target cell upon expiry of the timer.

Description

technical field [0001] This application relates to wireless communications. technical background [0002] High Speed ​​Downlink Packet Access (HSDPA) is a feature proposed in Release 5 of the 3rd Generation Partnership Project (3GPP) specification. HSDPA uses three important concepts to achieve maximum spectral efficiency, these three concepts are: adaptive modulation and coding (AMC), fast physical layer retransmission (ie hybrid automatic repeat request (HARQ)) and fast Node B scheduling. [0003] Handover is a process in which a wireless transmit / receive unit (WTRU) switches from one cell to another without interruption of service. Figure 1 shows a conventional handover from one cell to another. In HSDPA, the WTRU 102 monitors a channel in a single cell, referred to as a "Serving High Speed ​​Downlink Shared Channel (HS-DSCH) cell." When a handover occurs, the WTRU 102 needs to switch to the new serving HS-DSCH cell (target cell 106) and stop communicating with the old...

Claims

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Application Information

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IPC IPC(8): H04W36/30
CPCH04W36/30H04L1/0003H04L1/0009H04L1/0026H04L1/0038H04L1/1671H04L1/1829H04W36/08H04W24/10H04W36/26H04W48/16H04L1/009
Inventor D·帕尼C·R·凯夫P·马里内尔
Owner INTERDIGITAL PATENT HLDG INC
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