US 9,178,679 B2 · Method and apparatus for feedback transmission in wireless communication system

Abstract

A method and an apparatus for feedback transmission in a wireless communication system are provided. A terminal selects at least one subband among plural subbands constituting a set of subbands and transmits information about feedback measured for the at least one subband. The feedback information contains an index of the at least one subband, and the at least one subband is selected in consideration of resource mapping of the plural subbands.

Drawings

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Drawings

Claims3

Dependent claims

A method of transmitting a feedback in a wireless communication system, the method comprising:

selecting at least one subband among a plurality of subbands forming a subband set,
wherein the at least one subband is selected from a subband set mapped in a contiguous logical resource unit (CLRU), and the at least one subband belongs to a selected specific frequency partition,
wherein the specific frequency partition is selected by a user equipment, and
wherein information about the specific frequency partition is fed back to a base station according to a primary fast feedback channel (PFBCH) encoding type 1;
and
transmitting feedback information measured for the at least one subband,
wherein the feedback information comprises an index of the at least one subband, and the at least one subband is selected by taking a frequency partition or a resource mapping of the plurality of subbands into consideration,
wherein the feedback information is transmitted to the base station through a primary fast feedback channel (PFBCH) or a second fast feedback channel (SFBCH),
wherein the index of the at least one subband is represented in a bitmap format, and
wherein a value of ‘1’ is allocated to a bit corresponding to a selected subband among the plurality of subbands, and a value of ‘0’ is allocated to a bit corresponding to an unselected subband among the plurality of subbands.

7 more elements

Dependencies are inferred from the claim text.

Description11,119 words

Summary1,200 words

#1. Field of the Invention

#The present invention relates to wireless communications and, more particularly, to a method and apparatus for transmitting a feedback in a wireless communication system.

#2. Related Art

Brief description of the drawings12 figures

#FIG. 1 shows a wireless communication system.

#FIG. 2 shows an example of a frame structure.

#FIG. 3 shows an example of an uplink resource structure.

Detailed description9,757 words

#A technology below can be used in a variety of wireless communication systems, such as code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), and single carrier frequency division multiple access (SC-FDMA). CDMA can be implemented using radio technology, such as universal terrestrial radio access (UTRA) or CDMA2000. TDMA can be implemented using radio technology, such as global system for mobile communications (GSM)/general packet radio service (GPRS)/enhanced data rates for GSM evolution (EDGE). OFDMA can be implemented using radio technology, such as IEEE 802.11(Wi-Fi), IEEE 802.16(WiMAX), IEEE 802-20, or Evolved UTRA (E-UTRA). IEEE 802.16m is the evolution of IEEE 802.16e, and it provides a backward compatibility with an IEEE 802.16e-based system. UTRA is part of a universal mobile telecommunications system (UMTS). 3rd generation partnership project (3GPP) long term evolution (LTE) is part of evolved UMTS (E-UMTS) using evolved-UMTS terrestrial radio access (E-UTRA), and it adopts OFDMA in downlink (DL) and SC-FDMA in uplink (UL). LTE-A (advanced) is the evolution of 3GPP LTE.

#IEEE 802.16m is chiefly described as an example in order to clarify the description, but the technical spirit of the present invention is not limited to IEEE 802.16m.

#FIG. 1 shows a wireless communication system.

Facts

Application

13/384,193Filed 30 Jul 2010 · us provisional application

Priority

KR 10-2010-007377030 Jul 2010

Published

US 2012/0106500 A13 May 2012

Granted

3 Nov 2015

Term ends

22 Jul 2032

Estimated · how

20 years from earliest known nonprovisional domestic filing plus recorded patent term adjustment, including 723 days of adjustment. Maintenance-fee lapses, terminal disclaimers and statutory extensions have not been checked. The continuity chain may be incomplete; this is not an enforceability determination.

Classification5 codes

H04L 5/0091
Arrangements affording multiple use of the transmission path: signalling for the administration of the divided path, e.g. signalling of…
H04L 1/0003
By adapting the transmission rate: by switching between different modulation schemes
H04L 1/0009
Systems modifying transmission characteristics according to link quality, e.g. power backoff: by adapting the channel coding
H04L 1/0618
Using space diversity: space-time coding

Timeline

31 Jul 2009Priority claimedKR 10-2010-0073770
30 Jul 2010Application filedUS 13/384,193
13 Jan 2012Assigned to LG Electronics Inc.assignment of assignor's interest
3 May 2012PublishedUS 2012/0106500 A1
3 Nov 2015GrantedUS 9,178,679 B2
12 Oct 2026TodayWithin its term
22 Jul 2032Term endsEstimated, includes 723 days of adjustment

Method and apparatus for feedback transmission in wireless communication system

Life of this patent

Method and apparatus for feedback transmission in wireless communication system

Life of this patent

Life of this patent

Abstract

Drawings

Drawings

Claims3

Description11,119 words

Drawings

Classification5 codes

Life of this patent

Description11,119 words