Carrier aggregation

A carrier aggregation and component carrier technology, which is applied in the directions of location diversity, signaling feature, transmission path separation device, etc., and can solve the problem of insufficient UCI overhead.

Active Publication Date: 2011-09-14
INTERDIGITAL PATENT HLDG INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the payload size of Rel-8 LTE PUCCH is not enough to carry the increased UCI overhead even for a single DL component carrier in LTE-A

Method used

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Examples

Experimental program
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Embodiment

[0145] 1. A method for transmitting uplink control information using carrier aggregation, comprising: determining at least one uplink component carrier.

[0146] 2. The method of embodiment 1, further comprising mapping the uplink control information (UCI) to resource blocks based on carrier aggregation.

[0147] 3. The method according to any one of the above embodiments, further comprising transmitting the mapped UCI on an uplink control channel carried by the at least one uplink component carrier.

[0148] 4. The method according to any one of the above embodiments, wherein the at least one uplink component carrier is configured by a base station.

[0149] 5. The method as in any one of the preceding embodiments, wherein the at least one uplink component carrier is sent by at least one of radio resource controller signaling, higher layer signaling or L1 signaling.

[0150] 6. The method as in any preceding embodiment, wherein the at least one uplink component carrier is se...

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PUM

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Abstract

A method and apparatus for transmitting uplink control information (UCI) for Long Term Evolution-Advanced (LTE-A) using carrier aggregation is disclosed. Methods for UCI transmission in the uplink control channel, uplink shared channel or uplink data channel are disclosed. The methods include transmitting channel quality indicators (CQI), precoding matrix indicators (PMI), rank indicators (RI), hybrid automatic repeat request (HARQ) acknowledgement / non-acknowledgement (ACK / NACK), channel status reports (CQI / PMI / RI), source routing (SR) and sounding reference signals (SRS). In addition, methods for providing flexible configuration in signaling UCI, efficient resource utilization, and support for high volume UCI overhead in LTE-A are disclosed.

Description

technical field [0001] This application relates to wireless communications. Background technique [0002] Long Term Evolution (LTE) supports data rates up to 100 Mbps in the downlink and up to 50 Mbps in the uplink. Long Term Evolution-Advanced (LTE-A) enables a five-fold improvement in downlink data rate compared to LTE by using carrier aggregation (aggregation) technology alongside other technologies. Carrier aggregation can support flexible bandwidth allocation up to 100 MHz, for example. [0003] Depending on the size of the component carriers and the number of component carriers, LTE-A can operate in a symmetric or asymmetric configuration. This is achieved by using or aggregating up to five 20 MHz component carriers. For example, a single continuous downlink (DL) 40MHz LTE-A aggregation of multiple component carriers may be paired with a single 15MHz uplink (UL) carrier. Therefore, non-contiguous LTE-A DL aggregated carrier assignments may not coincide with UL aggr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04
CPCH04L5/001H04W72/042H04W72/0413H04L5/0053H04B7/024H04B7/0632H04B7/0639H04B7/066H04L1/1607H04L1/1812H04W72/23H04W72/21H04L1/0026H04W72/0446G06Q20/02G06Q20/20G06Q20/3224G06Q20/327G06Q20/36G06Q20/4012G06Q20/40145
Inventor E·巴拉P·J·彼得拉什基辛承爀张国栋A·Y·蔡J·S·利维P·艾杰佩尔J·W·哈伊姆R·L·奥勒森K·J-L·潘
Owner INTERDIGITAL PATENT HLDG INC
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