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Control channel transmission indication method, detection method, base station and user equipment

A technology of control channel and indication information, applied in transmission system, digital transmission system, transmission modification based on link quality, etc., can solve the problems of high implementation complexity and high UE power consumption.

Active Publication Date: 2021-07-06
CHINA MOBILE COMM LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When a UE that supports sTTI transmission wants to obtain the scheduling information of each sTTI in real time, it needs to detect the sPDCCH control channel of the sTTI. However, if the existing number of blind detections in each sTTI is still maintained, on the one hand, the implementation complexity of the UE is high. On the other hand, the power consumption of the UE is also relatively large

Method used

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  • Control channel transmission indication method, detection method, base station and user equipment
  • Control channel transmission indication method, detection method, base station and user equipment
  • Control channel transmission indication method, detection method, base station and user equipment

Examples

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example 1

[0149] This example abandons the current practice of defining a search space for each UE. That is, the control channel area is determined according to the actual control channel overhead, and the control channel area is indicated to the UE in an explicit or implicit manner, and all user equipment UEs detect their own control channels in the same control channel area. The following specifically provides three implementation schemes:

[0150] Option One:

[0151] By using sTTI-specific information in the sTTI to indicate (the sTTI-specific information corresponds to the aforementioned indication information) the following information:

[0152] The number of constituent units (for example, the number of sCCEs) contained in the control channel in the current sTTI is equivalent to the ability to determine the size of the control channel region.

[0153] All UEs perform blind detection of control channels according to different aggregation levels in the control channel area of ​​t...

example 2

[0167] Such as Figure 7 As shown, this example provides an information processing method, including:

[0168] Step S1: the base station performs resource scheduling, and generates scheduling information according to the result of resource scheduling;

[0169] Step S2: the base station generates indication information according to the transmission parameters of the control channel carrying the scheduling information;

[0170] Step S3: the base station sends indication information and scheduling information in sequence.

[0171] Step S4: the user equipment receives indication information and scheduling information;

[0172] Step S5: The user equipment at least determines the total number of resources of the control channel occupied by the control channel according to the indication information, and determines the resource area occupied by the control channel according to the total number of resources;

[0173] Step S6: The user equipment performs blind detection of schedulin...

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Abstract

The embodiment of the invention discloses a control channel transmission instruction, a detection method, a base station and user equipment. The control channel transmission indication method includes: obtaining the transmission parameters of the control channel of the short transmission time interval sTTI; according to the transmission parameters, forming the indication information transmitted by the control channel; wherein, the indication information includes Detection parameters for detecting the control channel; sending the indication information at the predetermined time-frequency resource position of the sTTI. In this way, the base station will not only send scheduling information through the control channel, but also send indication information; in this way, the user equipment obtains the indication information before detecting the scheduling information of the control channel; and the indication information is determined according to the transmission parameters of the control channel, which is The unknown degree of blind detection performed by the user equipment can be reduced, thereby reducing the complexity of the blind detection, thereby improving the blind detection efficiency of the control channel and reducing the power consumption of the blind detection.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a control channel transmission instruction, a detection method, a base station and user equipment. Background technique [0002] In a Long Term Evolution (LTE) system, it is necessary to send scheduling information to a user equipment (User Equipment, UE) through a physical downlink control channel (Physical Downlink Control Channel, PDCCH); in this way, the UE can determine the The physical shared channel, transmission format, and power information that can be used to transmit information by itself, so as to correctly decode and send and receive data. The UE needs to obtain the scheduling information through blind detection. In the prior art, in order to reduce the number of busy detections of the UE, it will be set in the dedicated search space of the PDCCH; the time-frequency resource corresponding to the dedicated search space is less than the entire The time-frequency ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04W72/14H04L1/00
CPCH04L1/0038H04W72/23Y02D30/70
Inventor 胡丽洁侯雪颖
Owner CHINA MOBILE COMM LTD RES INST
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