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Sending and detection method of downlink control information, network side device and user equipment

A network-side device and user equipment technology, which is applied to the use of forward error control, the separation device of transmission paths, and the use of return channels for error prevention/detection, etc., can solve the problem of increasing scheduling delay, reducing multi-user diversity gain, limiting Terminal peak rate and other issues

Active Publication Date: 2017-08-11
NTT DOCOMO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the existing standard, the HARQ process number (HPN, HARQ Process Number) field in the FDD DCI is 3 bits, so the 3-bit HPN field cannot represent all the HARQ processes, which will affect the flexibility of base station scheduling. Increase the scheduling delay, limit the peak rate of the terminal at the same time, and also reduce the multi-user diversity gain

Method used

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  • Sending and detection method of downlink control information, network side device and user equipment
  • Sending and detection method of downlink control information, network side device and user equipment
  • Sending and detection method of downlink control information, network side device and user equipment

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Experimental program
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Effect test

Embodiment 1

[0146] In this embodiment, masking the CRC is used to implicitly indicate the extended 1-bit HPN, so that the HPN is extended from 3 bits to 4 bits, which will be described in detail below.

[0147] The DCI sending method described in this embodiment is applied in a carrier aggregation scenario between a TDD system and an FDD system, and the primary component carrier in the carrier aggregation scenario is configured as a TDD component carrier. Please refer to Figure 7 , which shows that when the sending method described in this embodiment is applied to a network side device, specifically an eNB, it may specifically include the following steps:

[0148] Step 11, the network side device determines the HPN value of the FDD component carrier corresponding to the user equipment (UE), and the value is represented by a 4-bit binary data.

[0149] Here, since the maximum number of HARQ processes on the FDD component carrier may exceed 8, 4-bit binary data is used to represent the ac...

Embodiment 2

[0217] In this embodiment, the scrambled result is punctured, so that the extended 1-bit HPN is carried in the scrambled CRC sequence, so that the HPN is extended from 3 bits to 4 bits, which will be described in detail below.

[0218] The DCI sending method described in this embodiment is applied in a carrier aggregation scenario between a TDD system and an FDD system, and the primary component carrier in the carrier aggregation scenario is configured as a TDD component carrier. Please refer to Figure 8 , which shows that when the sending method described in this embodiment is applied to a network side device (such as an eNB), it may specifically include the following steps:

[0219] Step 81 , the network side device determines the HPN value of the FDD component carrier corresponding to the user equipment (UE), and the value is represented by a 4-bit binary data.

[0220] Here, since the maximum number of HARQ processes on the FDD component carrier may exceed 8, 4-bit binar...

Embodiment 3

[0260] In this embodiment, the mapping position of the PDCCH is used to implicitly indicate the extended 1-bit HPN, so that the HPN is extended from 3 bits to 4 bits, which will be described in detail below.

[0261] The DCI sending method provided in this embodiment is also applicable to a carrier aggregation scenario between a TDD system and an FDD system, and the primary component carrier in the carrier aggregation scenario is configured as a TDD component carrier. The sending method described in this embodiment includes the following steps:

[0262] Step 41 , the network side device determines the HPN value of the FDD component carrier corresponding to the user equipment, and the value is represented by a 4-bit binary data.

[0263] Step 42, splitting the binary data into 3-bit first data and 1-bit second data.

[0264] Step 43: Generate FDD DCI, and construct a PDCCH for carrying the FDD DCI, wherein the FDD DCI includes a 3-bit HPN field, and the HPN field is filled wit...

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Abstract

The invention provides a transmission, a detection method, a network side device, and user equipment of top-down control information. High pass network (HPN) fields are expanded in a tacit mode or in an explicit mode, consequently the HPN fields are expanded from three bits to four bits, thus more hybrid automatic repeat request (HARQ) progresses can be represented by an expanded HPN, and accordingly flexibility of system scheduling can be improved, scheduling time delay is reduced, terminal peak rates are increased, and meanwhile multi-user diversity gain is obtained.

Description

technical field [0001] The present invention relates to Long Term Evolution (LTE, Long Term Evolution) and LTE-Advanced systems in the field of wireless communication, in particular to a carrier aggregation scenario between a time division duplex (TDD) system and a frequency division duplex (FDD) system A method for sending and detecting downlink control information (DCI, Downlink Control Information), a network side device, and a user equipment. Background technique [0002] With the development of mobile communication technology, user traffic and data throughput continue to increase, and the third generation mobile communication system (3G) can no longer fully meet the needs of users. Therefore, 3GPP is devoted to studying 3GPP LTE as the evolution of 3G system. LTE-Advanced is a technical evolution of 3GPP on the basis of LTE in order to meet the requirements of IMT-Advanced, and it supports backward compatibility with the LTE system. In order to provide higher data rat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L1/18H04W72/12
CPCH04L1/0013H04L1/004H04L1/0068H04L5/001H04L5/0053H04L5/0055H04L5/14
Inventor 牟勤王文博李勇彭木根刘柳佘小明陈岚须田博人
Owner NTT DOCOMO INC
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