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Method for selecting PUCCH SCell in carrier aggregation scene greater than 5

A carrier aggregation and scenario technology, applied in the directions of access restriction, electrical components, wireless communication, etc., can solve problems such as affecting transmission efficiency and affecting the efficiency of PUCCHSCell usage.

Active Publication Date: 2015-12-23
WUHAN HONGXIN TELECOMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Because of the introduction of a new PUCCH, when the TA (timing advance) of the sTAG (auxiliary TA group) times out, especially the TA of the sTAG where the PUCCHSCell is located, if the TA timeout problem is handled with the existing protocol, it will greatly affect the PUCCHSCell There is a high probability that the transmission of the SecondaryPUCCHgroup will be terminated, which will affect the transmission efficiency. This is contrary to the purpose of introducing carrier aggregation that supports more than 5 carriers.

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  • Method for selecting PUCCH SCell in carrier aggregation scene greater than 5
  • Method for selecting PUCCH SCell in carrier aggregation scene greater than 5

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Embodiment Construction

[0067] Below in conjunction with accompanying drawing and specific embodiment the technical solution of the present invention is described in detail as follows:

[0068] figure 1 : a flow chart of a method for selecting a PUCCHSCell in an aggregation scenario of more than 5 carriers provided by a specific embodiment of the present invention. like figure 1 As shown, a method for selecting a PUCCHSCell in a scenario greater than 5 carrier aggregations according to the present invention includes:

[0069] Step a: UE initial access; specifically:

[0070] The UE is in an idle state and initiates a random access process to the eNB. The eNB sends the SecondaryPUCCHgroup configuration information to the UE according to certain criteria, and the PCell and the PUCCHSCell save the current SecondaryPUCCHgroup configuration information.

[0071] figure 2 : a schematic diagram of a scenario of carrier aggregation of more than 5 carriers provided by a specific embodiment of the prese...

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Abstract

The present invention discloses a method for selecting a PUCCH SCell in a carrier aggregation scene greater than 5. When TA of the PUCCH SCell in a Secondary PUCCH group is overtime, the PUCCH SCell sorts the SCell of the Secondary PUCCH group; the PUCCH SCell selects an sTAG with a minimum TA value; and the SCell with a minimum load is used as a new PUCCH SCell. Obviously, the SCell in the Secondary PUCCH group is scheduled again through an eNB, thereby avoiding that the overtime problem of the PUCCH SCell leads to transmission termination of the whole Secondary PUCCH group SCell and utilizing available resources more reasonably and effectively.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, more specifically, to the technical field of 3GPP LTE / LTE-A, and in particular to a method for selecting a PUCCHSCell in an aggregation scenario of more than 5 carriers. Background technique [0002] In a Long Term Evolution (Long Term Evolution, LTE) wireless communication network, carrier aggregation can be used to increase the uplink and downlink rate of a UE (User Equipment, user equipment). 3GPP's work on carrier aggregation began in R10, mainly supporting basic carrier aggregation issues. Subsequently, in-band TDD (Time Division Duplex) carrier aggregation with different uplink and downlink configurations and aggregation-TDD-FDDCA (TDD-FDD carrier aggregation) between different frame structures were gradually supported. [0003] LAA (license-free spectrum) has opened up a new field for LTE carrier aggregation issues. CA (CarrierAggregation, carrier aggregation) techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W48/20H04W74/08H04W76/02
CPCH04W48/20H04W74/08
Inventor 姜杉李小龙黄小军王俊
Owner WUHAN HONGXIN TELECOMM TECH CO LTD