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Quality prediction method and device for physical downlink control channel of long term evolution system

A technology of physical downlink control and long-term evolution system, which is applied in the field of communication, and can solve the problems that the particle resources of the control channel and the power allocation algorithm cannot provide positioning basis, and the quality prediction method of the control channel is not provided.

Active Publication Date: 2013-10-23
ZTE CORP
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Problems solved by technology

[0006] However, in the current prior art, for the channel quality prediction of PDCCH, an accurate and efficient control channel quality prediction method is not given in the relevant protocols, so that the control channel particle resources of the base station (eNodeB) and Power allocation algorithm provides fast and accurate positioning basis

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  • Quality prediction method and device for physical downlink control channel of long term evolution system

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[0034] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0035] In the prior art, the measurement of RSRP is based on the antenna port 0 (Antenna Port 0, referred to as AP0) used by LTE multi-antenna technology (Multiple Input Multiple Output, referred to as MIMO), or all reference signals on AP0 and AP1 are used as In the measurement source set, within the measurement bandwidth specified in the protocol, it is up to the UE to select which Reference Signals (Cell Reference Signal, Cell RS) on Resource Elements (referred to as RE) as RSRP measurement points.

[0036] figure 1 is a schematic diagram of the adjacent cell interference pattern of the control channel according to the prior art, such as figure 1 as shown, figure 1 It reflects in detail the map...

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Abstract

The invention discloses a quality prediction method and device for a physical downlink control channel of a long term evolution system. The method comprises the following steps: user equipment (UE) required for performing the quality prediction on the physical downlink control channel (PDCCH) is confirmed, and information reported by the target UE is received; a prediction index of the target UE is confirmed according to reported information, wherein the prediction index is the signal to interference plus noise ratio (SINR) of the control channel or the equivalent receiving level (RPPDCCH) of the control channel; and the PDCCH quality of the target UE is confirmed according to the SINR or the RPPDCCH. With the help of the invention, a more accurate and highly efficient control channel quality prediction can be provided for LTE users without adding measurement and signaling so that a rapid and precise positioning basis can be provided for a control channel element (CCE) resource and power allocation algorithm of an evolved node B (eNodeB).

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for predicting the quality of a physical downlink control channel of a long-term evolution system. Background technique [0002] The Physical Downlink Control Channel (PDCCH) is a third generation partnership project (Third Generation Partnership Project, referred to as 3GPP) Long Term Evolution (LTE) LTE and Long Term Evolution-Advanced (LTE) An important physical channel in the Evolution-Advanced (referred to as LTE-A) standard. The downlink control signaling is carried by the PDCCH and located on the first N orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM for short) symbols of each downlink subframe, where N is less than or equal to 4. [0003] Downlink control signaling includes the following two parts: 1. Downlink Transport Format (DTF for short), Downlink Shared Channel (Downlink Shared Channel, DL-SCH for s...

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Application Information

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IPC IPC(8): H04W24/08H04W72/04
CPCH04W24/08H04W24/10H04B17/373H04B17/327H04W84/042
Inventor 杨扬
Owner ZTE CORP
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