Method for allocating uplink resources in a wireless communication system and a device therefor

Patent metadata

Field	Value
Publication number	US-2016105877-A1
Application number	US-201414786293-A
Country	US
Kind code	A1
Filing date	May 2, 2014
Priority date	May 15, 2013
Publication date	Apr 14, 2016
Grant date	—

Abstract

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for allocating uplink resources in the wireless communication system, the method comprising: transmitting, by a first eNB to a second eNB, uplink (UL) resource allocation information for a user equipment (UE) connected with both the first eNB and the second eNB; receiving, by a first eNB from the UE, buffer size information; allocating one or more UL resources to the UE, by considering both of the buffer size information and the UL resource allocation information, wherein the UL resource allocation information indicates a ratio of the buffer size to be considered in each eNB.

First claim

What is claimed is:

1 . A method for an evolved-Node B (eNB) operating in a wireless communication system, the method comprising:
transmitting, by a first eNB to a second eNB, uplink (UL) resource allocation information for a user equipment (UE) connected with both the first eNB and the second eNB; receiving, by the first eNB, buffer size information from the UE; and allocating, by the first eNB, one or more UL resources to the UE by considering both of the buffer size information and the UL resource allocation information, wherein the UL resource allocation information indicates a ratio of the buffer size to be considered in each eNB.

2 . The method according to claim 1 , wherein said transmitting comprising transmitting the UL resource allocation information through an X2 interface.

3 . The method according to claim 2 , wherein the ratio of the buffer size is configured per radio bearer comprising one Packet Data Convergence Protocol (PDCP) entity, two Radio Link Control (RLC) entities and two Medium Access Control (MAC) entities for one direction.

4 . The method according to claim 1 , wherein the buffer size information comprises amount of data available for transmission in a Packet Data Convergence Protocol (PDCP) entity and amount of data available for transmission in a Radio Link Control (RLC) entity.

5 . The method according to claim 1 , wherein a first type cell including the first eNB provides service to a first area larger than a second area served by a second type cell including the second eNB.

6 . A device operating as a first eNB in a wireless communication system, the device comprising:
an RF module; and a processor configured to control the RF module, wherein the processor is configured to transmit uplink (UL) resource allocation information to a second eNB for a user equipment (UE) connected with both the first eNB and the second eNB, to receive buffer size information from the UE, to allocate one or more UL resources to the UE by considering both of the buffer size information and the UL resource allocation information, wherein the UL resource allocation information indicates a ratio of the buffer size to be considered in each eNB.

7 . The device according to claim 6 , wherein the processor is configured to transmit the UL resource allocation information through an X2 interface, when the processor is configured to transmit the UL resource allocation information for the UE connected with both the first eNB and the second eNB.

8 . The device according to claim 6 , wherein the ratio of the buffer size is configured per radio bearer comprising one Packet Data Convergence Protocol (PDCP) entity, two Radio Link Control (RLC) entities and two Medium Access Control (MAC) entities for one direction.

9 . The device according to claim 6 , wherein the buffer size information comprises amount of data available for transmission in a Packet Data Convergence Protocol (PDCP) entity and amount of data available for transmission in a Radio Link Control (RLC) entity.

10 . The device according to claim 6 , wherein a first type cell including the first eNB provides service to a first area larger than a second area served by a second type cell including the second eNB.

11 . A method for an evolved-Node B (eNB) operating in a communication system, the method comprising;
receiving, by a second eNB from a first eNB, uplink (UL) resource allocation information for a user equipment (UE) connected with both the first eNB and the second eNB; receiving, by the second eNB, buffer size information from the UE; and allocating, by the second eNB, one or more UL resources to the UE by considering both of the buffer size information and the UL resource allocation information, wherein the UL resource allocation information indicates a ratio of the buffer size to be considered in the second eNB.

12 . The method according to claim 11 , wherein said transmitting comprising transmitting the UL resource allocation information through an X2 interface.

13 . The method according to claim 11 , wherein the ratio of the buffer size is configured per radio bearer comprising one Packet Data Convergence Protocol (PDCP) entity, two Radio Link Control (RLC) entities and two Medium Access Control (MAC) entities for one direction.

14 . The method according to claim 11 , wherein the buffer size information comprises amount of data available for transmission in Packet Data Convergence Protocol (PDCP) entity and amount of data available for transmission in Radio Link Control (RLC) entity.

15 . The method according to claim 11 , wherein a first type cell including the first eNB provides service to a first area larger than a second area served by a second type cell including the second eNB.

Assignees

• Lg Electronics Inc

Inventors

• Yi Seungjune
• Lee Sunyoung
• Park Sungjun

Classifications

• H04W72/21

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04W72/12

  Wireless traffic scheduling · CPC title

• H04W72/044 Primary

  based on the type of the allocated resource · CPC title

• H04W92/20

  between access points · CPC title

• H04W28/0278

  using buffer status reports (dynamic wireless traffic scheduling definition H04W72/12) · CPC title