METHOD AND DEVICE FOR INDICATING CONTROL CHANNEL

• US 20140204812A1
• Filed: 12/26/2011
• Published: 07/24/2014
• Est. Priority Date: 08/15/2011
• Status: Abandoned Application

• Current Assignee: ZTE Corporation
• Original Assignee: ZTE Corporation
• Inventors: Li, Yong, Dai, Bo
• Application Number:
  US14/239,103
• Publication Number:
  US 20140204812A1
• Time in Patent Office: Days
• US Class Current: 370/280
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0042 intra-user or intra-terminal allocation
• CPC Class Codes: H04L 5/005 of common pilots, i.e. pilots destined for multiple users or terminals
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

Disclosed are a method and device for indicating a control channel. The method for indicating a control channel includes: channelization processing is performed on indication information indicating the control channel, wherein the control channel is a newly added control channel area or a control channel on a resource which is newly carved out of resources reserved for PDSCH and is for transmitting control information; and the processed indication information is sent to UE. By applying the disclosure, the current problem that the UE cannot detect the newly added downlink control channel can be solved.

Claims

1. A method for indicating a control channel, comprising:

performing channelization processing on indication information indicating the control channel, wherein the control channel is a control channel on a newly added control channel area or the control channel is on a resource, which is newly carved out of a Physical Downlink Shared Channel (PDSCH) resource and is for transmitting control information; and

sending to an user equipment (UE) the indication information processed.

2. The method according to claim 1, wherein after sending to the UE the indication information processed, the method further comprises:

the UE receiving the indication information and detecting the control channel according to the indication information.

3. The method according to claim 1, wherein the indication information comprises at least one of the following:

a time domain position of the control channel area;

a frequency domain position of the control channel area;

a method type for indicating the control channel area;

a mode for indicating the resource allocation of the control channel on the control channel area; and

a time dependent mapping relationship between a control signalling born on the control channel and data scheduled by the control signalling.

4. The method according to claim 1, wherein the channelization processing comprises the following channelization processes:

encoding, modulation, layer mapping and antenna port mapping.

5. The method according to claim 1, wherein the indication information is born on an assigned physical or logical resource.

6. The method according to claim 5, wherein the indication information being born on the assigned physical or logical resource comprises at least one of the following:

the indication information being born on the physical or logical resource alone;

the indication information, attached with a Cyclic Redundancy Check (CRC), being born on the physical or logical resource; and

the indication information and other control information, attached with the CRC, being born on the physical or logical resource;

wherein the physical or logical resource comprises;

a logical resource CCE of a Physical Downlink Control Channel (PDCCH) transmitting the control information;

or a resource on the PDSCH; and

the resource on the PDSCH comprises other Orthogonal Frequency Division Multiplexing (OFDM) symbol resource except the OFDM symbols occupied by the PDCCH.

9. The method according to claim 6, wherein when the indication information is born on the CCE, the indication information is born on continuous CCEs, with a starting position of the indication information being at least one of predefined CCE numbers, and the predefined CCE numbers being integer times of the number of the CCEs bearing the indication information.

10. The method according to claim 9, wherein the starting position of the indication information is embodied as any one of the following:

a position at the start of the CCE numbers;

a position at the end of the CCE numbers; and

an assigned position, wherein the assigned position is a position calculated according to a predetermined algorithm.

11. The method according to claim 10, wherein the UE receiving the indication information comprises:

when the indication information is born on the physical or logical resource alone, the UE acquiring data on the CCE, and retrieving from the assigned position data of the indication information which has been performed the channelization processing, decoding the data, and then obtaining the indication information;

when the indication information, attached with the Cyclic Redundancy Check (CRC), is born on the physical or logical resource, the UE acquiring data on the CCE, and retrieving from the assigned position data of the indication information which has been performed the channelization processing, decoding the data retrieved, and then according to information obtained by a CRC check determining information which passes the check as the indication information; and

when the indication information and other control information, attached with the CRC, are born on the physical or logical resource, the UE acquiring data on the CCE and retrieving from the assigned position data of the indication information and the other control information which has been performed the channelization processing, decoding the data retrieved, according to information obtained by a CRC check determining information which passes the check as common information of the indication information and the control information, and then acquiring the indication information from the common information.

12. The method according to claim 6, wherein when the indication information is born on the CCE, the indication information is born on continuous CCEs, with a CCE number at the starting position being integer times of the number of the CCEs bearing the indication information, and selecting a position in the predefined at least one possible position.

13. The method according to claim 12, wherein the UE receiving the indication information comprises:

when the indication information, attached with the Cyclic Redundancy Check (CRC), is born on the physical or logical resource, the UE acquiring data on the CCE, and trying to retrieve from the predefined at least one possible position all possible data of the indication information which has been performed the channelization processing, decoding the retrieved data, and then according to information obtained by a CRC check determining information which passes the check as the indication information; and

when the indication information and other control information, attached with the CRC, are born on the physical or logical resource, the UE acquiring data on the CCE and trying to retrieve from the predefined at least one possible position all possible data of the indication information and the other control information which has been performed the channelization processing, decoding the data retrieved, according to information obtained by a CRC check determining information which passes the check as common information of the indication information and the control information, and then acquiring the indication information from the common information.

14. The method according to claim 6, wherein when the indication information is born on the PDSCH resource, data of the indication information mapped to the antenna port is mapped to predetermined positions in the PDSCH area, with the predetermined positions being determined according to the bandwidth of the current system and the identity (ID) of a cell.

15. The method according to claim 14, wherein the data of the indication information mapped to the antenna port being mapped to the predetermined positions in the PDSCH area comprises:

grouping symbols to be mapped, each group containing m3 symbols, and mapping according to that a group of symbols corresponds to a neighbor resource unit, with the m3 being a predetermined number, an interval between the neighbor resource units mapping the symbols to be mapped is a predefined interval.

16. The method according to claim 1, wherein the resource on the PDSCH comprises the other Orthogonal Frequency Division Multiplexing (OFDM) symbol resource except the OFDM symbols occupied by the PDCCH.

7. (canceled)

8. (canceled)

17. A device for indicating a control channel, comprising:

a processing module configured to perform channelization processing on indication information indicating the control channel, wherein the control channel is a control channel on a newly added control channel area or the control channel is on a resource, which is newly carved out of a physical downlink shared channel (PDSCH) resource and is for transmitting control information; and

a sending module configured to send to a user equipment (UE) the indication information processed.

18. The device according to claim 17, wherein the processing module is further configured to bear the indication information on an assigned physical or logical resource.

19. The device according to claim 18, wherein the processing module is further configured to bear the indication information on at least one of the following physical or logical resources:

the indication information being born on the physical or logical resource alone;

the indication information, attached with Cyclic Redundancy Check (CRC), being born on the physical or logical resource; and

the indication information and other control information, attached with the CRC, being born on the physical or logical resource.

20. The device according to claim 19, wherein the processing module is further configured to bear the indication information on continuous CCEs when the indication information is born on the CCE, with a starting position of the indication information being at least one of predefined CCE numbers, and the predefined CCE numbers being integer times of the number of the CCE bearing the indication information.

21. The device according to claim 19, wherein when the processing module is further configured to bear the indication information on the PDSCH resource, and to map data of the indication information mapped to the antenna port to predetermined positions in the PDSCH area, with the predetermined positions being determined according to the bandwidth of the current system and the identity (ID) of a cell.

22. The device according to claim 21, wherein the processing module is further configured to group symbols to be mapped, with each group containing m3 symbols, and to map according to that a group of symbols corresponds to a neighbor resource unit, wherein the m3 is a predefined number, an interval between the neighbor resource units mapping the symbols to be mapped is a predefined interval.