Method and device for receiving CSI (Channel State Information), and method and device for reporting CSI

A receiving cycle and receiving channel technology, applied in the field of communication, can solve problems such as the reduction of available resources of business channels, the impact on system uplink throughput, multi-time-frequency resources, etc., and achieve the effects of increasing available resources, improving user experience, and improving quality

Active Publication Date: 2017-08-01
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when multiple UEs need to report CSI of multiple serving cells, according to the prior art, configuring different time-frequency parameters for different serving cells of different UEs will occupy more time-frequency resources on the PUCCH , which in turn reduces the available resources of the traffic channel, greatly affecting the uplink throughput of the system

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  • Method and device for receiving CSI (Channel State Information), and method and device for reporting CSI
  • Method and device for receiving CSI (Channel State Information), and method and device for reporting CSI
  • Method and device for receiving CSI (Channel State Information), and method and device for reporting CSI

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Embodiment Construction

[0057] Embodiments of the present invention provide a method and device for receiving CSI and reporting CSI, which are used to reduce PUCCH resources occupied by multi-carrier CSI under CA, improve uplink throughput of an LTE-A system, and further improve system performance.

[0058] On the whole, the embodiment of the present invention provides a method for the base station to allocate time-frequency resources for each component carrier of the UE under CA, thereby solving the problem that the CSI of multi-carriers occupies a large number of PUCCH resources of the main carrier. The problem of making fewer resources for the service information of the main carrier. The methods provided by the embodiments of the present invention are described in detail below from different network entity sides.

[0059] On the network side, see figure 1 , an embodiment of the present invention provides a method for receiving CSI, including:

[0060] S101. For each UE, determine the time-freque...

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Abstract

The invention discloses a method and a device for receiving CSI (Channel State Information), and a method and a device for reporting the CSI, so as to reduce PUCCH (Physical Uplink Control Channel) resources occupied by the multi-carrier CSI under CA (Carrier Aggregation). The method of receiving the CSI comprises steps: as for each piece of UE, time-frequency resources for receiving the CSI on the PUCCH of a primary carrier are determined, wherein as for the same UE, in each receiving period, the time-frequency resources for receiving the CSI are the same, and as for different UE, in each receiving period, the time-frequency resources for receiving the CSI are different; and as for each piece of UE, in each receiving period, the time-frequency resources for receiving the CSI on the PUCCH receive the CSI of a member carrier reported by the UE, wherein the CSI reported by the UE received in at least two adjacent receiving periods is CSI of different member carriers.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a method and device for receiving Channel State Information (CSI) and reporting CSI. Background technique [0002] The carrier aggregation (Carrier Aggregation, CA) technology of the advanced long-term evolution (Long Term Evolution-Advanced, LTE-A) system can aggregate multiple continuous or discontinuous carriers under the same evolved base station (eNB), At the same time, it serves the user equipment (User Equipment, UE) to provide the required rate. These aggregated carriers are also called component carriers (Component Carrier, CC). Each serving cell can be a component carrier, and serving cells (component carriers) under different eNBs cannot be aggregated. In order to ensure that the UE in the LTE system can work on each aggregated carrier, each carrier should not exceed 20 MHz at most. However, the protocol restricts the physical uplink control channel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L1/06
CPCH04L1/0026H04L1/0675
Inventor 李静李翔胡乐薇
Owner DATANG MOBILE COMM EQUIP CO LTD
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