Method and apparatus for controlling data in wireless comminication system

• US 9,860,887 B2
• Filed: 04/22/2014
• Issued: 01/02/2018
• Est. Priority Date: 04/23/2013
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yi, Yunjung, Ahn, Joonkui, Seo, Hanbyul
• Primary Examiner(s): Acolatse, Kodzovi
• Application Number:
  US14/785,680
• Publication Number:
  US 20160095093A1
• Time in Patent Office: 1,351 Days
• Field of Search: None
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04W 28/22 Negotiating communication rate
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states

Abstract

A method for and apparatus for controlling data transmission in a wireless communication system is provided. A wireless device acquires information including a monitoring subframe configuration, which is a subset of subframes including that control information are transmitted; determines monitoring subframes of a cell based on the information; detects control information for the data transmission according to the monitoring subframes; and rate matches data in a corresponding subframe with the detected control information.

Claims

1. A method for controlling data transmission in a wireless communication system, performed by user equipment (UE), the method comprising:

checking a number of subframes which are scheduled without control information for the data transmission;

determining whether a multi-subframe downlink control information (DCI) has a priority over a cross-subframe DCI;

determining a valid subframe among the number of subframes to be applied with predetermined control information; and

rate matching data in the valid subframe with the predetermined control information,

wherein the predetermined control information is configured in order of priority of cross-subframe scheduling or multi-subframe scheduling with an ePDCCH set, or a Semi-Persistent Scheduling (SPS), and

the priority of the control information scheduling is changed by a signal from a network, the valid subframe is changed by a carrier type of the subframe.

2. The method of claim 1, wherein the signal includes information on a set of enhanced Physical Downlink Control Channel (ePDCCH) monitoring subframes, or a set of Physical Downlink Control Channel (PDCCH) monitoring subframes.

3. The method of claim 1, wherein the signal includes information on a multi-subframe or a cross-subframe which is configured to transmit a Downlink Control Information (DCI).

4. The method of claim 3, wherein the signal further includes information on a set of subframes for which the multi-subframe or the cross-subframe for both downlink and uplink scheduling is fixed or, a set of subframes for which the multi-subframe or the cross-subframe for downlink and uplink is configured separately.

5. The method of claim 1, wherein the signal includes Time Division Duplex (TDD) configuration including downlink and uplink scheduling for the data transmission,

wherein the TDD configuration is indicated with an index, and the TDD configuration is changed by downlink and the uplink subframe with a dynamic TDD configuration for traffic adaptation.

6. The method of claim 1, wherein the signal includes information for data subframes which are applied with the control information.

7. The method of claim 1, wherein the signal is one of:

a radio resource control (RRC) message including an ePDCCH set, which contains a scheduling Downlink Control Information (DCI) or Semi-Persistent Scheduling (SPS) configuration;

or

a control channel including a Physical Downlink Control Channel (PDCCH) or ePDCCH having a scheduling DCI.

8. The method of claim 1, wherein the signal includes Physical Resource Block (PRB) set including a rate matching pattern determined by whether activation or validation is indicated on a DCI scheduled for a Physical Downlink Shared (PDSCH).

9. A wireless device for controlling data transmission in a wireless communication system, the wireless device comprises:

a radio frequency (RF) unit for transmitting and receiving a radio signal; and

a processor operatively coupled to the RF unit that;

checks a number of subframes which are scheduled without control information for the data transmission;

determines whether a multi-subframe downlink control information (DCI) has a priority over a cross-subframe DCI;

determines a valid subframe among the number of subframes to be applied with predetermined control information; and

rate matches data in the valid subframe with the predetermined control information,

wherein the predetermined control information is configured in order of priority of cross-subframe scheduling or multi-subframe scheduling with an ePDCCH set, or a Semi-Persistent Scheduling (SPS), and

the priority of the control information scheduling is changed by a signal from a network, the valid subframe is changed by a carrier type of the subframe.

10. The wireless device of claim 9, wherein the signal includes at least one of:

information on a set of enhanced Physical Downlink Control Channel (ePDCCH) monitoring subframes, or a set of Physical Downlink Control Channel (PDCCH) monitoring subframes,

information on a multi-subframe or a cross-subframe which is configured to transmit a Downlink Control Information (DCI),

a Time Division Duplex (TDD) configuration including downlink and uplink scheduling for the data transmission, the TDD configuration is indicated with an index, and the TDD configuration is changed by the downlink and the uplink subframe with dynamic Time Division Duplex (TDD) configuration for traffic adaptation,

information for data subframes which are applied with the control information, and

a Physical Resource Block (PRB) set including a rate matching pattern determined by activation/validation on a DCI scheduled for a Physical Downlink Shared (PDSCH).

11. The wireless device of claim 9, wherein the signal is one of:

a radio resource control (RRC) message including an ePDCCH set, which contains a scheduling Downlink Control information (DCI) or Semi-Persistent Scheduling (SFS) configuration;

or a control channel including a Physical Downlink Control Channel (PDCCH) or ePDCCH having a scheduling DCI.