Detection method and apparatus for DCI

A detection method and technology for controlling messages, applied in correct operation testing, digital transmission system, error prevention, etc., can solve the problems of complex detection, unknown number of services and aggregation degree, etc., and achieve the effect of reducing the complexity of detection

Inactive Publication Date: 2016-05-11
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a downlink control message DCI detection method and device to at least solve the problem of complicated detection caused by not knowing the number of services and the degree of aggregation in the process of detecting downlink control information DCI of multiple services in the related art

Method used

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  • Detection method and apparatus for DCI
  • Detection method and apparatus for DCI
  • Detection method and apparatus for DCI

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Experimental program
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Embodiment 1

[0096] In this embodiment, the original bit indicating DCI5 is 10bit. The meaning of each field is shown in Table 1. It includes the uplink and downlink DCI indication, the number of downlink services and the number of uplink services, as well as the aggregation degree of the downlink DCI. Indication, an indication of the aggregation degree of the uplink DCI. For a certain user, there is only one indication of the aggregation degree of the downlink / uplink DCI. Therefore, when scheduling, the aggregation degree of the DCI corresponding to all services is the same, and the flexibility of scheduling is slightly worse. However, considering that the DCI detection requirements are higher High, and each DCI is discretely distributed in time-frequency resources, so it is reasonable to use the same aggregation degree for all DCIs of the same user. Table 1 also lists: there are 4 downlink services for the same user, and there is no uplink service indicating the value of DCI.

[0097] The ...

Embodiment 2

[0103] In this embodiment, the original bit indicating DCI5 is 22 bits, and the meaning of each field is shown in Table 1. It includes the uplink and downlink DCI indication, the number of downlink services, the number of uplink services, and the number of each downlink DCI. The aggregation degree indicator, the aggregation degree indicator of each uplink DCI. For a user, the downlink / uplink DCI aggregation degree indication can be different, and the scheduling is more flexible, but the original number of bits of the DCI indication is large, and it takes up more time-frequency resources when the bit rate is low. . Table 2 also lists: when the same user has 2 uplink services and 4 downlink services, the value of DCI is indicated.

[0104] The eNB combines the indication DCI according to the scheduling situation of a certain UE, and sends the indication DCI. If the eNB does not schedule a certain UE, the corresponding indication DCI will not be sent. The sending process of indic...

Embodiment 3

[0111] In this embodiment, the original bit indicating DCI5 is 16 bits. The meaning of each field is shown in Table 3. It includes the uplink and downlink DCI indication, the number of downlink services, and the number of uplink services. There are also two sets of downlink DCI indicators. Aggregation degree indicator, the aggregation degree indicator of two sets of uplink DCI. For a certain user, the downlink / uplink DCI aggregation indicators can be different, but there are only two combinations, but the design indicates that the original number of DCI bits is less than in the embodiment. Under the condition that the guaranteed bit rate is low, the occupancy is higher. Fewer time-frequency resources. Table 3 also lists: the same user has 4 uplink services, and there is no downlink service indicating the value of DCI.

[0112] The eNB combines the indication DCI according to the scheduling situation of a certain UE, and sends the indication DCI. If the eNB does not schedule a c...

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Abstract

The invention discloses a detection method and apparatus for DCI. The method comprises: indication DCI issued by a base station is received, wherein the indication DCI carries the number of to-be-detected services and / or aggregation degree of the to-be-detected services; and according to the number of to-be-detected services and / or aggregation degree of the to-be-detected services, DCI corresponding to the to-be-detected services is detected. According to the invention, a problem of complicated detection due to lack of understanding of the number of services and aggregation degree during the DCI detection process of a plurality of services according to correlated technologies can be solved; and detection is carried out according to the content of the indication DCI, so that the detection complexity is reduced.

Description

Technical field [0001] The present invention relates to the field of wireless communication, and in particular to a method and device for detecting DCI of a downlink control message. Background technique [0002] There are nine QCI (QoSClassIdentifier) ​​levels defined in the LTE protocol. The priority, packet delay, and acceptable packet error rate of different QCI levels are all different. Different levels of QCI need to create different bearers. For multiple bearers scheduled by the same user in the same subframe, only one scheduling packet is supported, and the same transmission mode and modulation method are used, so the packet error rate is also the same. For bearers with strict requirements on the packet loss rate, the accuracy of air interface transmission is generally improved by configuring the AM mode. The packet loss rate can be guaranteed through retransmission, but the packet delay will increase. [0003] The related technology is based on multiple bearers scheduled ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L1/24H04L5/00
CPCH04W24/00
Inventor 陈琼韩亚洁李萍张婷黄俊
Owner ZTE CORP
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