Base station, user equipment and data transmission method

A data transmission method and user equipment technology, applied in the field of wireless communication, can solve the problems of high signaling overhead, poor transmission reliability, time extension, etc., and achieve the effect of improving reliability

Active Publication Date: 2017-05-31
BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] However, the above methods either have the problems of high signaling overhead and long delay, or the problems of poor transmission reliability

Method used

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  • Base station, user equipment and data transmission method
  • Base station, user equipment and data transmission method
  • Base station, user equipment and data transmission method

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Experimental program
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Embodiment Construction

[0049] In the prior art, a grant-based uplink data transmission method in LTE generally adopts an orthogonal multiple access method, which has the advantages of simple receiver, high reliability, and strong link adaptability. However, before the uplink data transmission, the user equipment needs to establish a connection with the cell through the random access process and obtain the scheduling authorization from the base station side, which will generate a large amount of signaling interaction between the base station and the user equipment, which will bring heavy Due to the load overhead and time delay of the small packet business, there is a problem of low system efficiency.

[0050] The small packet service in 5G can adopt the uplink transmission method based on grant-free, and can adopt two modes of orthogonal multiple access and non-orthogonal multiple access. When the user equipment needs to transmit uplink data, it does not need to use the The base station dynamically o...

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Abstract

The invention relates to a base station, user equipment and a data transmission method. The method comprises that when uplink data needs to be transmitted, a scheduling-free access resource is selected from a preset scheduling-free resource pool randomly to transmit initial data information to the base station; the initial data information comprises the corresponding uplink data, an identification of the user equipment and a subsequent data report; the subsequent data report comprises whether the uplink data needs to be transmitted subsequently and the data volume of the subsequent uplink data when the uplink data needs to be transmitted subsequently; feedback information sent by the base station when the initial data information is received and the initial data information sent by the user equipment is analyzed correctly is received; and on the basis of scheduling indication information obtained from the feedback information, subsequent uplink data transmission is implemented. According to the above schemes, during uplink data transmission, resources are saved, time delay of data transmission is reduced, and the reliability is improved.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a base station, user equipment and a data transmission method. Background technique [0002] The Long Term Evolution (LTE) system adopts a grant-based data transmission method, and adopts downlink Orthogonal Frequency Division Multiple Access (OFDMA), and uplink single-carrier frequency division multiple access (Single-carrier Frequency-Division Multiple Access, SC-FDMA) access method. When a user equipment in an idle state has data to send, it first establishes a connection with a cell through a random access process, and obtains a unique Cell-Radio Network Temporary Identifier (Cell-Radio Network Temporary Identifier, C -RNTI). Further, the user sends an uplink scheduling request (scheduling Request, SR) to the base station to notify the base station that it has data to send, and requests the base station to allocate uplink resources for it, and the base station al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/02H04W72/12H04W74/08
CPCH04W72/02H04W72/1268H04W74/085H04W72/23
Inventor 曲鑫
Owner BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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