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Channel state information processing method, device and system

A technology of channel state information and processing method, applied in the field of channel state information processing method, device and system

Inactive Publication Date: 2014-04-09
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the main purpose of the present invention is to provide a channel state information processing method, device and system to solve the problem of channel state information transmission in a communication system supporting D2D communication

Method used

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  • Channel state information processing method, device and system
  • Channel state information processing method, device and system
  • Channel state information processing method, device and system

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Experimental program
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Embodiment 1

[0155] In this embodiment, the first device sends the second channel state information of the second link to the network node through the first link; wherein the first link is a cellular communication link from the first device to the network node, and the second A link is a device-to-device communication link between a second device and the first device.

[0156] The second channel state information may be transmitted using transmission resources of the first channel state information. The first channel state information is channel state information of a connection from the network node to the first device. Usually, the network node configures dedicated resources for the transmission of the first channel state information. For example, in an LTE / LTE-A system, a base station (eNB) configures a PUCCH resource for a UE to periodically feed back CSI. When the UE needs to feed back the second channel state information (such as the channel state information of the D2D link), the ...

Embodiment 2

[0166] In this embodiment, the first device sends the second channel state information of the second link to the network node through the first link; wherein the first link is a cellular communication link from the first device to the network node, and the second A link is a device-to-device communication link of a second device with the first device.

[0167] The second channel state information may be transmitted using dedicated resources, where the dedicated resources may be resources configured by the network node through high-layer signaling. For example, in the LTE / LTE-A system, the eNB configures resources for the transmission of the second channel state information for the D2D UE through RRC signaling. The configured resource may be a dedicated PUCCH format resource, and the encoding and bearing method of the second channel state information may refer to the related processing method of channel state information in the LTE / LTE-A cellular communication system; the confi...

Embodiment 3

[0173] The D2D channel state information can be transmitted according to the configuration of the upper layers. For example, in the LTE / LTE-A system, the eNB configures the transmission period and transmission subframe position of the UE to transmit D2D channel state information through RRC signaling, and the UE transmits the D2D channel state information in the configured subframe according to the configured period .

[0174]The transmission of D2D channel state information can be triggered by a reference signal. For example, in the LTE / LTE-A system, after detecting the measurement reference signal sent by other UEs in subframe n, the UE sends D2D channel state information in subframe n+k based on the measurement of the measurement reference signal. The subframe n+k here may be the first feedback subframe of the UE satisfying that k is greater than the fixed subframe interval, for example, k>3, and the feedback subframe may be the first channel state information (such as the...

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Abstract

The invention discloses a channel state information processing method, a device and a system. The second channel state information of a second link is sent to a network node through a first link. The first link is a cellular communication link of a first device to the network node. The second link is a D2D communication link which can communicate with the first device and is between a second device and the first device. According to the invention, a technology which processes the channel state information solves the problem of channel state information transmission when D2D communication in a cellular communication system is carried out; a basis is provided for scheduling when D2D communication is carried out; the resource utilization rate of D2D communication is ensured; and without significantly increasing the complexity of the design and the realization of user equipment, D2D communication is compatible with cellular communication.

Description

technical field [0001] The present invention relates to the communication field, in particular to a processing method, device and system for channel state information. Background technique [0002] The cellular communication system realizes the multiplexing of limited spectrum resources, which makes the wireless communication technology develop vigorously. In a cellular communication system, when there is a service to be transmitted between two user equipments (User Equipment, UE), the service data from UE1 to UE2 will first be transmitted to base station 1 through the air interface, and base station 1 transmits the service data through the core network The data is transmitted to the base station 2, and the base station 2 transmits the service data to the UE2 through the air interface. Such as figure 1 As shown, when UE1 and UE2 are located in the same cell, although base station 1 and base station 2 are in the same site, one data transmission still consumes two wireless s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L1/16H04W72/12
CPCH04L1/16H04W24/10H04W72/12H04L1/00H04L1/0026H04W72/21H04L5/0057
Inventor 吴栓栓袁明杨瑾梁枫
Owner ZTE CORP
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