METHOD AND APPARATUS FOR TRANSMITTING DATA IN WIRELESS COMMUNICATION SYSTEM

• US 20110143699A1
• Filed: 12/07/2010
• Published: 06/16/2011
• Est. Priority Date: 12/10/2009
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Ki Hwan, Cho, Yong Sang, Kim, Joung Youl, Jang, Seung Hwan, NOH, Seung Pyo
• Granted Patent: US 8,467,836 B2
• Time in Patent Office: Days
• US Class Current: 455/127.1
• CPC Class Codes: H04W 52/0261 managing power supply demand, e.g. depending on battery level
• CPC Class Codes: H04W 52/0296 switching to a backup power supply
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method and apparatus for transmitting data in a wireless communication system are disclosed, which transmit uplink data in consideration of mobile station (MS) consumption power such that a UE can be stably operated at a cell edge. A method for transmitting data by a mobile station (MS) of a wireless communication system includes transmitting, if MS power consumption is higher than limitation of power consumption, data to a base station (BS) with power higher than the limitation of power consumption using power supplied from a primary power-supply unit and a storage unit during a first time, and charging the storage unit using the primary power-supply unit during a second time, wherein the limitation of power consumption indicates maximum power amount capable of being normally supplied from the primary power-supply unit.

Claims

1. A method for transmitting data by a mobile station (MS) of a wireless communication system, the method comprising:

transmitting, if power consumption of the mobile station (MS) is higher than limitation of power consumption, first data to a base station (BS) with power higher than the limitation of power consumption using power supplied from a primary power-supply unit and a storage unit during a first time; and

charging the storage unit using the primary power-supply unit during a second time,

wherein the limitation of power consumption indicates maximum power amount capable of being normally supplied from the primary power-supply unit.

2. The method according to claim 1, further comprising monitoring power consumption of the mobile station (MS).

3. The method according to claim 2, further comprising:

if power consumption of the mobile station is higher than the limitation of power consumption, informing the base station (BS) of specific information indicating that power consumption of the mobile station is higher than the limitation of power consumption; and

receiving uplink data transmission scheduling generated using the specific information, from the base station (BS),

wherein the step of transmitting comprises transmitting the first data to the base station (BS) according to the uplink data transmission scheduling.

4. The method according to claim 1, further comprising:

receiving uplink data transmission scheduling from the base station (BS),

wherein the base station (BS) monitors transmission power of the mobile station (MS) and determines that the power consumption of the mobile station (MS) is higher than the limitation of power consumption when the monitored transmission power is higher than a predetermined reference value, and thus generates the uplink data transmission scheduling in consideration of a charging time of the storage unit.

5. The method according to claim 1, wherein the second time is decided in consideration of a transmission time of uplink control information.

6. The method according to claim 1, further comprising:

transmitting second data to the base station (BS) with power higher than the limitation of power consumption using power supplied from the primary power-supply unit and the storage unit during a third time; and

charging the storage unit during a fourth time,

wherein the fourth time is different from the second time.

7. A method for receiving data by a base station (BS) of a wireless communication system, the method comprising:

transmitting uplink data transmission scheduling to a mobile station (MS); and

receiving no data during a first time and receiving data transmitted with power higher than the limitation of power consumption of the mobile station (MS) using power supplied from a primary power-supply unit of the mobile station (MS) and a storage unit of the mobile station (MS) during a second time according to the uplink data transmission scheduling,

wherein the limitation of power consumption indicates maximum power amount capable of being normally supplied from the primary power-supply unit of the mobile station (MS), and the first time indicates a charging time of the storage unit.

8. The method according to claim 7, further comprising:

receiving specific information from the mobile station (MS), the specific information indicating that power consumption of the mobile station (MS) is higher than the limitation of power consumption; and

generating the uplink data transmission scheduling using the specific information.

9. The method according to claim 7, further comprising:

monitoring transmission power of the mobile station; and

determining that power consumption of the mobile station (MS) is higher than the limitation of power consumption when the monitored transmission power is higher than a predetermined reference value, and generating the uplink data transmission scheduling in consideration of a charging time of the storage unit.

10. The method according to claim 7, wherein the second time is decided in consideration of a transmission time of uplink control information.

11. The method according to claim 7, further comprising:

receiving no data during a third time and receiving data transmitted with power higher than the limitation of power consumption of the mobile station (MS) using power supplied from the primary power-supply unit of the mobile station (MS) and the storage unit of the mobile station (MS) during a fourth time according to the uplink data transmission scheduling,

wherein the third time is different from the first time.

12. A method for controlling uplink transmission power comprising:

acquiring a power consumption level;

if the power consumption level is not higher than a reference value, storing surplus power other than power consumption from among a first supply power supplied from a first power-supply unit in a second power-supply unit; and

if the power consumption level is higher than the reference value, controlling transmission power of an uplink channel using the first supply power and a second supply power supplied from the second power-supply unit.

13. The method according to claim 12, further comprising:

if the power consumption level is not higher than the reference value, controlling transmission power of the uplink channel using the first supply power.

14. The method according to claim 12, wherein the uplink channel includes at least one of a physical random access channel (PRACH), a physical uplink control channel (PUCCH), and a physical uplink shared channel (PUSCH).

15. The method according to claim 14, wherein the controlling of the transmission power of the uplink channel is selectively carried out according to categories of information transmitted over the uplink channel.

16. The method according to claim 15, wherein the controlling of the transmission power of the uplink channel is carried out when control information is transmitted over the uplink channel.

17. The method according to claim 15, wherein the controlling of the transmission power of the uplink channel is carried out in case of transmission of information to which a retransmission scheme or a delayed transmission scheme is not applied.