Method and device for acquiring control information in wireless communication system

• US 10,080,199 B2
• Filed: 07/07/2014
• Issued: 09/18/2018
• Est. Priority Date: 07/05/2013
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Chae, Hyukjin, Seo, Hanbyul, Kim, Hakseong, Kim, Byounghoon
• Primary Examiner(s): Hamza, Faruk
• Assistant Examiner(s): Decker, Cassandra
• Application Number:
  US14/900,518
• Publication Number:
  US 20160157185A1
• Time in Patent Office: 1,534 Days
• Field of Search: None
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 52/16 Deriving transmission power values from another channel
• CPC Class Codes: H04W 52/228 using past power values or information
• CPC Class Codes: H04W 52/30 using constraints in the total amount of available transmission power
• CPC Class Codes: H04W 52/383 power control in peer-to-peer links
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 76/14 Direct-mode setup
• CPC Class Codes: H04W 92/18 between terminal devices

Abstract

A signal transmission method is a method by which a secondary node transmits a signal in a wireless communication system comprising the steps of: receiving a scheduling map from either a scheduling node or a master node; performing scheduling and/or transmission power control on the basis of the scheduling map; and transmitting a signal on the basis of the scheduling or transmission power control result, wherein when the secondary node respectively transmits control information and data in a discontinuous frequency domain, the transmission power control includes adjustment for each of the maximum transmission power of the control information and the maximum transmission power of the data.

Claims

1. A method for allowing a secondary node device to transmit a signal in a wireless communication system, the method performed by the secondary node device and comprising:

receiving a scheduling map from one of a scheduling node or a master node;

performing at least one of scheduling of the secondary node device or transmit (Tx) power control of the secondary node device based on the scheduling map; and

transmitting a signal based on a result of the scheduling or based on a result of the Tx power control,

wherein, when the secondary node device transmits each of control information and data in a discontinuous frequency domain within a component carrier (CC), the performing the Tx power control includes;

coordinating a first maximum Tx power of the control information, and

coordinating a second maximum Tx power of the data, and

wherein each of the coordinating the first maximum Tx power and the coordinating the second maximum Tx power are performed based on an interference on a CC adjacent to the CC,

wherein the coordinating the first maximum Tx power and the coordinating the second maximum Tx power are performed such that a difference between the first maximum Tx power and the second maximum Tx power is equal to or less than a specific value, and

wherein the specific value is determined in consideration of an interference generated in the data by transmission of the control information.

2. The method according to claim 1, wherein the interference on the CC adjacent to the CC is caused by at least one of an in-band emission, a harmonic or an inter-modulation.

3. The method according to claim 1, wherein the control information comprises Wide Area Network (WAN) signal and the data comprises a Device to Device (D2D) signal.

4. The method according to claim 1, wherein the scheduling map includes at least one of a first region in which interference occurs due to transmission of a primary node or a second region in which the transmission of the primary node is to be guaranteed.

5. The method according to claim 1, wherein the scheduling map includes at least one of:

information indicating a resource allocation region of a primary node,

emission information based on a signal transmission of the primary node,

an identification (ID) of the primary node,

maximum Tx power information of the secondary node device,

an ID of the secondary node device, or

information associated with an application range of the scheduling map.

6. The method according to claim 5, wherein the transmitting of the signal comprises:

transmitting the signal using a power that is equal to or less than a value of the maximum Tx power information of the secondary node device.

7. The method according to claim 1, wherein:

the scheduling of the secondary node device is limited either in a first region in which interference occurs due to transmission of a primary node or in a second region in which transmission of the primary node is to be guaranteed.

8. The method according to claim 1, wherein the coordinating the first maximum Tx power and the second maximum Tx power comprises:

coordinating the maximum Tx power information only when a result of a signal measurement of a primary node is equal to or less than a predetermined threshold value.

9. The method according to claim 1, wherein:

if a primary node is a Wide Area Network (WAN) UE, the Tx power control is performed using a Reference Signal Receive Power (RSRP), a path attenuation estimation value from the RSRP, or a target emission level.

10. A secondary node device for use in a wireless communication system, comprising:

a transceiver; and

a processor operably connected to the transceiver, wherein the processor;

controls the transceiver to receive a scheduling map from one of a scheduling node or a master node,

performs at least one of scheduling of the secondary node device or transmit (Tx) power control of the secondary node device based on the scheduling map, and

controls the transceiver to transmit a signal based on a result of the scheduling or based on a result of the Tx power control,

wherein, when the secondary node device transmits each of control information and data in a discontinuous frequency domain within a component carrier (CC), the Tx power control includes;

coordinating a first maximum Tx power of the control information, and

coordinating a second maximum Tx power of the data, and

wherein each of the coordinating the first maximum Tx power and the coordinating the second maximum Tx power are performed based on an interference on a CC adjacent to the CC,

wherein the coordinating the first maximum Tx power and the coordinating the second maximum Tx power are performed such that a difference between the first maximum Tx power and the second maximum Tx power is equal to or less than a specific value, and

wherein the specific value is determined in consideration of an interference generated in the data by transmission of the control information.