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Method and terminal for confirming channel state information

A channel state information and terminal technology, applied in transmission path sub-channel allocation, wireless communication, signaling allocation, etc., can solve the problems of high cost and high terminal complexity, and achieve the effect of reasonable cost and reasonable complexity

Active Publication Date: 2014-05-07
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0049] The technical problem to be solved by the present invention is to provide a terminal and method for determining channel state information, to overcome the problem of excessive complexity of the terminal, and to solve the problem of high cost when the existing system uses transmission mode 10 and TDD duplex mode

Method used

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  • Method and terminal for confirming channel state information
  • Method and terminal for confirming channel state information
  • Method and terminal for confirming channel state information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0113] If P=3 or 4, when y=2, 3 and 4, X takes the value of y;

[0114] The number of CSIs to be reported is set to Y, and the number of aperiodic CSIs to be updated is Z=min(X, Y), where min represents the minimum of two values. The terminal updates Z aperiodic CSI.

[0115] When y is equal to 1, there is no restriction on X.

[0116] Among them, y may currently take values ​​of 1, 2, 3, and 4; P may take values ​​of 1, 3, and 4.

[0117]In short, the calculation method of the CSI here fully considers the capability of the UE and the number of configured CSI Processes to determine the number of aperiodic CSIs that need to be updated. Reasonable restrictions are made on the amount of data CSI calculations to ensure that the terminal has a reasonable complexity and a reasonable cost, and is especially suitable for time-division duplex systems.

Embodiment 2

[0119] If P=3, y=2 or 3, then the value of X is P;

[0120] If P=4, y=2 or 3, then the value of X is min(P, 3); otherwise, when y=4, the value of X is P;

[0121] The number of CSIs to be reported is set to Y, and the number of aperiodic CSIs to be updated is Z=min(X, Y), where min represents the minimum of two values. The terminal updates Z aperiodic CSI.

[0122] When y is equal to 1, there is no restriction on X.

[0123] Among them, y may currently take values ​​of 1, 2, 3, and 4; P may take values ​​of 1, 3, and 4.

[0124] terminal embodiment

[0125] This embodiment provides a terminal for determining channel state information, such as figure 2 shown, including:

[0126] a receiving unit, configured to receive an aperiodic CSI request;

[0127] A determining unit, configured to determine the parameter X according to the terminal's ability to process a channel state information process CSI Process and / or the number y of currently configured CSI Processes;

[0128...

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Abstract

The invention provides a method for confirming channel state information. The method comprises that: a terminal receives a non-periodic channel state information CSI request, a parameter X is confirmed according to capacity in processing the channel state information process CSI Process of the terminal and / or number y of the currently configured CSI Process, and the maximum X non-periodic CSI are updated according to the parameter X; and the parameter X is the total number of the CSI Process or reports needed to be updated in one or more non-periodic CSI requests by the terminal at the same time. The invention also provides the terminal for confirming the channel state information. CSI operand is reasonably restricted so that the terminal is ensured to be reasonable in complexity and cost.

Description

technical field [0001] The invention relates to the field of mobile wireless communication, in particular to a terminal and a method for determining channel state information for a specific transmission mode in a wireless communication system. Background technique [0002] In wireless communication technology, when the base station side (e.g., evolved Node B, eNB) uses multiple antennas to transmit data, it can adopt spatial multiplexing to improve the data transmission rate, that is, the same time-frequency resources are used at the transmitting end to Different antenna positions transmit different data, and a receiving end (such as user equipment, User Equipment, UE for short) also uses multiple antennas to receive data. In the case of a single user, the resources of all antennas are allocated to the same user, and this user exclusively occupies the physical resources allocated to the base station side within a transmission interval. This transmission method is called Sing...

Claims

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Application Information

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IPC IPC(8): H04L1/06
CPCH04L1/0026H04L1/0027H04B7/0452H04L5/0055H04L5/0057H04W72/23
Inventor 李儒岳徐俊郭森宝张峻峰
Owner ZTE CORP
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