Method and apparatus for processing a downlink shared channel

• US 8,762,811 B2
• Filed: 12/11/2012
• Issued: 06/24/2014
• Est. Priority Date: 05/14/2001
• Status: Expired due to Term

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Bolourchi, Nader, Terry, Stephen E., Dick, Stephen G.
• Primary Examiner(s): Alphonse, Fritz
• Application Number:
  US13/711,501
• Publication Number:
  US 20130128835A1
• Time in Patent Office: 560 Days
• Field of Search: 714/758, 714/756, 714/751, 714/748, 714/807, 714/704, 714/47, 714/39
• US Class Current: 714/758
• CPC Class Codes: H03M 13/09 Error detection only, e.g. using cyclic redundancy check [CRC] codes or single parity bit
• CPC Class Codes: H03M 13/37 Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
• CPC Class Codes: H04L 1/0061 Error detection codes
• CPC Class Codes: H04L 5/0092 Indication of how the channel is divided
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A method and apparatus is disclosed wherein a user equipment (UE) receives control information on a first channel and uses the control information to process a second channel.

Claims

1. User equipment (UE) comprising:

circuitry to;

receive a wireless signal of a control channel, the wireless signal comprising an N bit field and control information, the N bit field comprising an N bit cyclic redundancy check (CRC) modulo two added to an N bit UE identity, wherein the value of N is a positive integer;

use the N bit UE identity to determine that the N bit CRC is correct; and

process, based on the determination, the control information.

2. The UE of claim 1, the circuitry to process the control information configured to process a high speed (HS) downlink shared channel (DSCH) using the control information.

3. The UE of claim 1, the circuitry to process the control information configured to provide the control information from a physical layer of the UE to a medium access control (MAC) layer of the UE.

4. The UE of claim 1, the circuitry to receive the wireless signal of the control channel further configured to receive the wireless signal through a physical downlink control channel.

5. The UE of claim 1, the circuitry to receive the wireless signal of the control channel configured to receive the wireless signal through a high speed (HS) shared control channel (SCCH).

6. The UE of claim 5, the UE identity being associated with a group of UEs in a wireless network.

7. The UE of claim 1, the UE identity being uniquely associated with the UE in a wireless network.

8. User equipment (UE) comprising:

a receiver to receive downlink control information (DCI) and masked cyclic redundancy check (CRC) bits through a wireless communication system, the masked CRC bits comprising a CRC derived from the DCI, the CRC scrambled by a UE identity; and

processor circuitry to determine that the CRC is correct and that the UE identity is one of a plurality of identities associated with the UE, and to process the DCI.

9. The UE of claim 8, the receiver configured to receive the DCI in a physical downlink control channel.

10. The UE of claim 8, the receiver configured to receive the DCI in a high speed (HS) shared control channel (SCCH).

11. The UE of claim 8, the masked CRC bits comprising an N bit field, the CRC of the DCI comprising N bits, N being a positive integer, and the masked CRC bits comprising the CRC of the DCI modulo two added to the UE identity.

12. The UE of claim 8, the processor circuitry further configured to discard the DCI based on a determination that the CRC is not correct.

13. The UE of claim 8, at least one of the plurality of identities being uniquely associated with the UE in a wireless network.

14. The UE of claim 8, the at least one of the plurality of identities being associated with a group of UEs in a wireless network.

15. A method for processing control information at a user equipment (UE), the method comprising:

processing, at a physical layer of the UE, a mask comprising a cyclic redundancy check (CRC) of control information in a high speed shared control channel (HS-SCCH) combined with a UE identity,

wherein if the UE identity is associated with the UE, the processing extracts the CRC from the mask for verification and forwards the control information from the physical layer to a medium access control (MAC) layer of the UE, and

wherein if the UE identity is not associated with the UE, the processing discards the control information.

16. The method of claim 15, wherein the UE identity is associated with a group of UEs in a wireless network.

17. The method of claim 15, where the UE identity is uniquely associated with the UE in the wireless network.

18. The UE of claim 15, the mask comprising an N bit field, the CRC of the control information comprising N bits, N being a positive integer, and the masked CRC bits comprising the CRC of the DCI modulo two added to the UE identity.