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Resource indication and determination method and device, network side equipment and mobile communication terminal

A resource indication and resource determination technology, applied in wireless communication, transmission path separation device, pilot signal allocation, etc., can solve the problem of no PDCCH design scheme

Active Publication Date: 2020-12-04
CHINA MOBILE COMM LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for TTI with a shorter duration, that is, sTTI, there is currently no design scheme for PDCCH in the industry

Method used

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  • Resource indication and determination method and device, network side equipment and mobile communication terminal
  • Resource indication and determination method and device, network side equipment and mobile communication terminal
  • Resource indication and determination method and device, network side equipment and mobile communication terminal

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Experimental program
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Embodiment Construction

[0073] In the embodiment of the present invention, a resource allocation scheme for the downlink control channel is given from the perspectives of time division multiplexing with traffic channels, frequency division multiplexing and discrete time-frequency multiplexing, which can solve problems that may be caused by shortened TTIs.

[0074] In the prior art, PDCCH and other channels are allocated resources in a time-division manner. However, this method has a problem of low resource utilization for sTTI, which is explained as follows.

[0075] For the LTE-TDD system, it supports a TTI of 0.5ms length (7 OFDM symbols), and a PDCCH with a length of 2 OFDM symbols needs to occupy 28.6% (2 / 7) of the resources of the entire TTI, plus for Pilots for data demodulation and measurement, less than 70% of transmission resources are used for data transmission in TTI.

[0076] As for the LTE-FDD system, since the shortest length of TTI it supports is 2 OFDM symbols, its resource utilizati...

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Abstract

The present invention discloses a resource indication and determination method and device, network side equipment and mobile communication terminal. The resource indication method is used for network side equipment. The resource indication method includes: determining an indication as a transmission allocated by a downlink control channel Resource position indication parameters of frequency domain characteristics and time domain characteristics of resources; transmitting the resource position indication parameters to the mobile communication terminal, instructing the mobile communication terminal to determine the resource position according to the frequency domain characteristics and time domain characteristics indicated by the resource position indication parameters the transmission resources described above. The present invention provides a resource allocation scheme for the downlink control channel from the perspectives of time division multiplexing, frequency division multiplexing and discrete time-frequency multiplexing with traffic channels, and can solve some problems that may be caused by TTI shortening.

Description

technical field [0001] The present invention relates to mobile communication, in particular to a resource indication and determination method and device, network side equipment and a mobile communication terminal. Background technique [0002] In the LTE (Long Term Evolution, long-term evolution) system, the PDSCH (Physical Downlink Shared Channel physical downlink shared channel) and PUSCH ( Physical UplinkShared Channel (Physical Uplink Shared Channel) position in the subframe, transmission format and power information, etc. [0003] The UE can correctly demodulate and send data by reading the control information in the PDCCH. At present, as the delay requirement is getting higher and higher, whether it is TDD ((Time Division Duplexing, time division multiplexing) or FDD ((Frequency Division Duplexing, frequency division multiplexing), it has been confirmed that it can support shorter duration TTI ( TransferTime Interval, transfer time interval). [0004] The existing P...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04L5/00
CPCH04L5/0007H04L5/0048H04W72/23
Inventor 胡丽洁侯雪颖
Owner CHINA MOBILE COMM LTD RES INST