Method of blind decoding of control channel for a wireless communication system

• US 9,226,284 B2
• Filed: 12/20/2012
• Issued: 12/29/2015
• Est. Priority Date: 12/20/2011
• Status: Active Grant

• Current Assignee: HTC Corporation
• Original Assignee: HTC Corporation
• Inventors: Wu, Chih-Yao
• Primary Examiner(s): Pezzlo, John
• Application Number:
  US13/721,074
• Publication Number:
  US 20130155869A1
• Time in Patent Office: 1,104 Days
• Field of Search: 370/252, 370/329, 370/278, 370/430
• US Class Current: 1/1
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A method of blind decoding of a control channel for a wireless communication system comprising a network and a mobile device is disclosed. The network selects at least one of a plurality of control channels of at least one logical domain of control channel element, for transmitting control information to the mobile device, wherein the plurality of control channels of each logical domain are uniformly distributed over the logical domain. On the other side, the mobile device monitors all of the control channel candidates of each of the at least one logical domain of control channel element, for obtaining the control information which is transmitted from the network and configured to the mobile device, wherein all of the control channel candidates of each logical domain are uniformly distributed over the logical domain.

Claims

1. A method of blind decoding of a control channel for a mobile device of a wireless communication system comprising a network and the mobile device, the method comprising:

monitoring all of enhanced physical downlink control channel (EPDCCH) candidates at an ECCE (enhanced control channel elements) domain,

wherein the EPDCCH candidates are in a position derived from the following equation;

2. The method of claim 1, wherein the logical-domain-specific pseudo-random number Y_k is defined by a function of a logical-domain-specific parameter and a slot number within a radio frame.

3. The method of claim 1, wherein the ECCE domain is not a physical domain defined by a time domain or a frequency domain.

4. The method of claim 3, wherein one ECCE comprises a plurality of EREGs (enhanced resource element groups).

5. The method of claim 4, wherein the mapping of the ECCEs to the EREGs is a localized transmission.

6. The method of claim 5, wherein the localized transmission of EPDCCH is not interleaved in the time domain and frequency domain.

7. The method of claim 1, wherein the ECCE domain is defined by an ECCE index.

8. A method of blind decoding of a control channel for a network of a wireless communication system comprising the network and a mobile device, the method comprising:

selecting at least one enhanced physical downlink control channel (EPDCCH) candidate among all EPDCCH candidates at an ECCE (enhanced control channel elements) domain;

mapping at least one EPDCCH to at least one EPDCCH candidate, wherein the at least one EPDCCH comprises control information to be transmitted to the mobile device,

wherein the positions of all EPDCCH candidates are derived from the following equation;

9. The method of claim 8, wherein the logical-domain-specific pseudo-random number Y_k is defined by a function of a logical-domain-specific parameter and a slot number within a radio frame.

10. The method of claim 8, wherein the ECCE domain is not a physical domain defined by a time domain or a frequency domain.

11. The method of claim 8, wherein the ECCE domain is defined by an ECCE index.

12. The method of claim 8, wherein one ECCE comprises a plurality of EREGs (enhanced resource element groups).

13. The method of claim 12, wherein the mapping of the ECCEs to the EREGs is a localized transmission.

14. The method of claim 13, wherein the localized transmission of EPDCCH is not interleaved in the time domain and frequency domain.