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A p-cqi transmission method and device for tti bundled users

A technology of P-CQI and transmission method, which is applied in the field of P-CQI transmission, and can solve the problems of bundling HARQ processes with less TTIs, reducing downlink throughput, and reducing uplink throughput, etc.

Active Publication Date: 2018-05-25
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is well known that if there is no P-CQI sent to the eNB for a long time, the downlink throughput will decrease hugely and rapidly, which is unacceptable
[0012] If TTI bundling is avoided on all P-CQI subframes (P-CQI is periodic, its period is typically 20ms), TTI bundling will lose many opportunities to transmit data, which will also significantly reduce uplink throughput, Especially for the TDD case, which has less TTIs to bundle the HARQ process, so this is also unacceptable

Method used

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  • A p-cqi transmission method and device for tti bundled users
  • A p-cqi transmission method and device for tti bundled users
  • A p-cqi transmission method and device for tti bundled users

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Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0030] The present invention provides a solution to avoid TTI bundling transmission loss while ensuring that the UE can still send P-CQI information. Further, the operations performed on the eNB side in the present invention may be performed by a scheduling device installed in the eNB. Unless otherwise specified, the scheduling device and the eNB are used equally in this document. Wherein, the scheduling device may specifically be an RRM (Radio Resource Management, radio resource management) scheduler, which can control the scheduling of TTI bundles and understand the reception of P-CQI information, for example, the last P-CQI information is How long ago was it received.

[0031] According to an embodiment of the present invention, when the P-CQI information sent by a TTI bundled user is not received within a certain period of time or a plurality of consecu...

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Abstract

The purpose of the present invention is to provide a P-CQI transmission method and device for TTI bundled users. Among them, the present invention judges whether the transmission subframe of the next P-CQI information conflicts with a TTI bundled transmission / retransmission, and when the two collide, abandons the conflicted TTI bundled transmission / retransmission to ensure that the next P-CQI information is received. - P‑CQI information. According to the solution of the present invention, on the one hand, it can solve the problem in the prior art that the eNB may not receive P-CQI information for a long time when TTI bundling is enabled, so that the downlink throughput will not be affected; on the other hand, By discarding only TTI bundling transmission / retransmission that collides with the transmission subframe of P‑CQI information, the uplink throughput of TTI bundling users can be less affected.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a technology for P-CQI transmission of TTI bundled users. Background technique [0002] As we all know, TTI bundling (Transmission Time Interval bundling, referred to as TTIbundling, transmission time interval bundling) is a technology introduced by 3GPP (The3rd Generation Partnership Project, third generation partnership project) to solve LTE (Long Term Evolution, long-term evolution ) uplink budget issues and balance the range of uplink coverage and downlink coverage. In LTE FDD (Frequency Division Duplex, Frequency Division Duplex), TTI bundling is mainly included in the organized transmission of 4 HARQ (Hybrid Automatic Repeat-reQuest, Hybrid Automatic Repeat Request) transmissions in 4 consecutive uplink TTI transmission subframes / Retransmission. [0003] When TTI bundling is configured, 1 HARQ transmission = 1 group of 4 consecutive transmissions over 4 co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18
Inventor 姚劲松
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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