Method for Enhancing Data Transmission Efficiency for a Radio Resource Control Procedure for a Wireless Communications System and Related Apparatus

• US 20080233939A1
• Filed: 03/21/2008
• Published: 09/25/2008
• Est. Priority Date: 03/23/2007
• Status: Abandoned Application

• Current Assignee: Innovative Sonic Limited
• Original Assignee: Innovative Sonic Limited
• Inventors: Kuo, Richard Lee-Chee
• Application Number:
  US12/052,742
• Publication Number:
  US 20080233939A1
• Time in Patent Office: Days
• US Class Current: 455/418
• CPC Class Codes: H04W 36/0055 Transmission or use of information for re-establishing the radio link
• CPC Class Codes: H04W 36/08 Reselecting an access point
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states

Abstract

A method for enhancing data transmission efficiency for a radio resource control, hereinafter called RRC, procedure for a user equipment, also called UE, of a wireless communications system includes initiating an RRC update procedure; sending an update message corresponding to the RRC update procedure to a network terminal; reselecting a serving cell after the update message is sent to the network terminal; and using a common HS-DSCH radio network transaction identifier, abbreviated to common H-RNTI, for a high speed downlink operation corresponding to a CELL_FACH state if the selected serving cell supports the high speed downlink operation.

Claims

1. A method for enhancing data transmission efficiency for a radio resource control, hereinafter called RRC, procedure for a user equipment, also called UE, of a wireless communications system, the method comprising:

initiating an RRC update procedure;

sending an update message corresponding to the RRC update procedure to a network terminal;

reselecting a serving cell after the update message is sent to the network terminal; and

using a common HS-DSCH radio network transaction identifier, abbreviated to common H-RNTI, for a high speed downlink operation corresponding to a CELL_FACH state if the selected serving cell supports the high speed downlink operation.

2. The method of claim 1 further comprising clearing a dedicated H-RNTI when reselecting the serving cell if the dedicated H-RNTI is set.

3. The method of claim 1, wherein the RRC update procedure is a cell update procedure, and the update message is a CELL UPDATE message.

4. The method of claim 1, wherein the RRC update procedure is a UTRAN registration area, abbreviated to URA, update procedure, and the update message is a URA UPDATE message.

5. The method of claim 1, wherein using the common H-RNTI for the high speed downlink operation if the selected serving cell supports the high speed downlink operation comprises using the common H-RNTI for the high speed downlink operation if a system information block type 6 includes a “

Downlink HS-PDSCH system information for connected mode”

information element or a system information block type 5 or type 5bis includes a “

Downlink HS-PDSCH system information”

information element.

6. The method of claim 5, wherein using the common H-RNTI for the high speed downlink operation comprises:

setting an HS_DSCH_RECEPTION_OF_CCCH variable to “

TRUE”

for putting the common H-RNTI into effect; and

starting reception of physical channels and transport channels corresponding to the high speed downlink operation according to configuration data of the “

Downlink HS-PDSCH system information for connected mode”

information element or configuration data of the “

Downlink HS-PDSCH system information”

information element.

7. A communications device used in a wireless communications system for enhancing data transmission efficiency for a radio resource control, hereinafter called RRC, procedure, the communications device comprising:

a control circuit for realizing functions of the communications device;

a central processing unit coupled to the control circuit for executing a program code to operate the control circuit; and

a memory coupled to the central processing unit for storing the program code;

wherein the program code comprises;

initiating an RRC update procedure;

sending an update message corresponding to the RRC update procedure to a network terminal;

reselecting a serving cell after the update message is sent to the network terminal; and

using a common HS-DSCH radio network transaction identifier, abbreviated to common H-RNTI, for a high speed downlink operation corresponding to a CELL_FACH state if the selected serving cell supports the high speed downlink operation.

8. The communications device of claim 7, wherein the program code further comprises clearing a dedicated H-RNTI when reselecting the serving cell if the dedicated H-RNTI is set.

9. The communications device of claim 7, wherein the RRC update procedure is a cell update procedure, and the update message is a CELL UPDATE message.

10. The communications device of claim 7, wherein the RRC update procedure is a UTRAN registration area, abbreviated to URA, update procedure, and the update message is a URA UPDATE message.

11. The communications device of claim 7, wherein using the common H-RNTI for the high speed downlink operation if the selected serving cell supports the high speed downlink operation comprises using the common H-RNTI for the high speed downlink operation if a system information block type 6 includes a “

Downlink HS-PDSCH system information for connected mode”

information element or a system information block type 5 or type 5bis includes a “

Downlink HS-PDSCH system information”

information element.

12. The communications device of claim 11, wherein using the common H-RNTI for the high speed downlink operation comprises:

setting an HS_DSCH_RECEPTION_OF_CCCH variable to “

TRUE”

for putting the common H-RNTI into effect; and

starting reception of physical channels and transport channels corresponding to the high speed downlink operation according to configuration data of the “

Downlink HS-PDSCH system information for connected mode”

information element or configuration data of the “

Downlink HS-PDSCH system information”

information element.