Method of transmitting control data in CDMA mobile communication system

• US 20020141367A1
• Filed: 04/03/2002
• Published: 10/03/2002
• Est. Priority Date: 04/03/2001
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Choi, Sung-Ho, Hwang, Sung-Oh, Kim, Sung-Hoon, Kwak, Yong-Jun, Kim, Jae-Yoel, Lee, Ju-Ho, Lee, Hyun-Woo, Lee, Kook-Heui, Chang, Jin-Weon
• Granted Patent: US 7,372,836 B2
• Time in Patent Office: Days
• US Class Current: 370/335
• CPC Class Codes: H04B 2201/70701 featuring pilot assisted reception
• CPC Class Codes: H04J 13/0003 Code application, i.e. aspects relating to how codes are applied to form multiplexed channels
• CPC Class Codes: H04L 1/1671 the supervisory signal being transmitted together with control information
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 52/08 Closed loop power control
• CPC Class Codes: H04W 52/286 during data packet transmission, e.g. high speed packet access [HSPA]

Abstract

A device and method for configuring an UL-DPCCH. One or more UL-DPCCHs, especially a UL-DPCCH for supporting HSDPA, are constructed in code division multiplexing and transmitted according to the characteristics of control information. The UL-DPCCH of the present invention that delivers various kinds of control information can be configured flexibly and operate in compatibility with a conventional asynchronous mobile communication system.

Claims

1. A method of transmitting high speed packet data to a user equipment (UE) in a node B in a CDMA mobile communication system, comprising the steps of:

transmitting a downlink dedicated physical control channel (DL-DPCCH) signal including a pilot signal, transport format combination indicator (TFCI) bits, a downlink transmit power control (TPC) command, dedicated channel data, and a high-speed downlink shared channel (HS-DSCH) indicator indicating a shared control channel (SHCCH);

transmitting control information needed for the UE to receive the high speed packet data on the SHCCH; and

spreading the high speed packet data with a spreading code included in the control information transmitted on the SHCCH and transmitting the spread high speed packet data on an HS-DSCH.

2. The method of claim 1, wherein a portion of the dedicated channel data field is assigned to the HS-DSCH indicator for transmission.

3. The method of claim 1, wherein the control information transmitted on the SHCCH includes a modulation/coding scheme (MCS) level, a spreading code used for the HS-DSCH, a HARQ process number, and a HARQ packet number.

4. The method of claim 1, wherein a plurality of SHCCHs spread with different spreading codes are used.

5. The method of claim 4, wherein the HS-DSCH indicator includes information about the spreading codes of the SHCCHs.

6. The method of claim 1, wherein the HS-DSCH indicator is transmitted in a TTI (Transmission Time Interval) having a plurality of slots.

7. The method of claim 1, wherein the HS-DSCH indicator is transmitted in one slot of a TTI having a plurality of slots.

8. A method of receiving high speed packet data from a node B in a user equipment (UE) in a CDMA mobile communication system, comprising the steps of:

receiving a downlink dedicated physical control channel (DL-DPCCH) signal including a pilot signal, transport format combination indicator (TFCI) bits, a downlink transmit power control (TPC) command, dedicated channel data, and a high-speed downlink shared channel (HS-DSCH) indicator indicating a shared control channel (SHCCH);

receiving control information needed for receiving the high speed packet data on the SHCCH; and

despreading the high speed packet data with a spreading code included in the control information received on the SHCCH and receiving the spread high speed packet data on an HS-DSCH.

9. The method of claim 8, wherein the HS-DSCH indicator is received in a portion of the dedicated channel data field.

10. The method of claim 8, wherein the control information transmitted on the SHCCH includes a modulation/coding scheme (MCS) level, a spreading code used for the HS-DSCH, a HARQ process number, and a HARQ packet number.

11. The method of claim 8, wherein a plurality of SHCCHs spread with different spreading codes are used.

12. The method of claim 11, wherein the HS-DSCH indicator includes information about the spreading codes of the SHCCHs.

13. The method of claim 8, wherein the HS-DSCH indicator is received in a TTI having a plurality of slots.

14. The method of claim 8, wherein the HS-DSCH indicator is received in one slot of a TTI having a plurality of slots.

16. The method of claim 15, wherein the P-UL-DPCCH is transmitted on a Q channel and the UL-DPDCH and the S-UL-DPCCH are transmitted on an I channel.

17. The method of claim 15, wherein the S-UL-DPCCH includes at least an ACK/NACK (Acknowledgment/Negative Acknowledgment) signal for the received high speed packet data.

18. The method of claim 15, wherein the spreading code for the S-UL-DPCCH has a lower spreading factor than a spreading factor of the spreading code for the P-UL-DPCCH.

20. The method of claim 19, wherein the P-UL-DPCCH is received on a Q channel and the UL-DPDCH and the S-UL-DPCCH are received on an I channel.

21. The method of claim 19, wherein the S-UL-DPCCH includes an Acknowledgement/Negative Acknowledgment (ACK/NACK) signal for the transmitted high speed packet data.

22. The method of claim 19, wherein the spreading code for the S-UL-DPCCH has a lower spreading factor than a spreading factor of the spreading code for the P-UL-DPCCH.

15. A method of transmitting feedback information for high speed packet data received from a node B in a user equipment (UE) in a CDMA mobile communication system where data is transmitted on a dedicated physical data channel (DPDCH), comprising the steps of:

spreading control information for an Uplink Dedicated Physical Data channel (UL-DPDCH) with a first spreading code and transmitting the spread UL-DPDCH control information on a primary Uplink Dedicated Physical Control channel (UL-DPCCH) (P-UL-DPCCH); and

spreading the feedback information with a second spreading code different from the first spreading code and transmitting the spread feedback information on a secondary UL-DPCCH (S-UL-DPCCH).

19. A method of receiving feedback information for transmitted high speed packet data from a user equipment (UE) in a node B that receives user data from the UE on an Uplink Dedicated Physical Data channel (UL-DPDCH) in a CDMA mobile communication system, comprising the steps of:

receiving UL-DPDCH control information spread with a first spreading code on a Primary Uplink Dedicated Physical Control channel (P-UL-DPCCH); and

receiving the feedback information spread with a second spreading code different from the first spreading code on a Secondary Uplink Dedicated Physical Control channel (S-UL-DPCCH).