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Uplink scheduling method, device and system, and equipment

A scheduling method and resource scheduling technology, applied in the field of network communication, can solve the problems of scheduling signaling waste, large scheduling signaling overhead, etc.

Active Publication Date: 2017-01-04
CHINA MOBILE COMM GRP CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

[0007] Embodiments of the present invention provide an uplink scheduling method, device, device, and system to solve the problem that the uplink scheduling mechanism of the LTE system on the unlicensed frequency band in the prior art may cause a large scheduling signaling overhead on the network side and scheduling signaling waste

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Embodiment Construction

[0099] In order to solve the problem that the uplink scheduling mechanism of the LTE system on the unlicensed frequency band in the prior art may cause a large scheduling signaling overhead and a waste of scheduling signaling on the network side, the inventors carried out the traditional uplink scheduling mechanism studied in detail. Among them, the traditional LTE uplink scheduling process is as follows:

[0100] 1. The eNB centrally allocates UL resources for all served UEs;

[0101] 2. The eNB notifies the relevant UE of the UL resource scheduling information through the PDCCH;

[0102] 1) The frequency domain position information of the UL resource indicated by the UL resource scheduling information is explicitly carried in the downlink control information (Downlink Control Information, DCI) format, where:

[0103] The DCI format carrying UL resource scheduling information is DCI format 0 or DCI format 4;

[0104] DCI format 0 / 4 includes fields:

[0105] Resource block...

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Abstract

The invention discloses an uplink scheduling method, device and system, and equipment, and is used for solving problems in the prior art that an uplink scheduling mechanism on an unauthorized frequency band of an LTE system can lead to the large scheduling signaling expense and the scheduling signaling waste at a network side. The method comprises that a base station sends uplink (UL) resource scheduling information to user equipment (UE) at a first subframe, which indicates that the UE starts competing a channel access opportunity from a second subframe, and when the UE successfully gets the channel access opportunity, UL resources indicated by the UL resource scheduling information are used, wherein a first time delay exists between the first subframe and the second subframe; and starting from the second subframe, when a fact that the UE uses UL resources for uplink transmission is determined or a fact that the UL resource scheduling information is invalid is judged, the UL resources indicated by the UL resource scheduling information are released.

Description

technical field [0001] The present invention relates to the technical field of network communication, in particular to an uplink scheduling method, device, equipment and system. Background technique [0002] With the rapid increase of data traffic in the mobile Internet, it has become a development trend to use a Long Term Evolution (Long Term Evolution, LTE) technology on an unlicensed frequency band (U-band). The unlicensed frequency band is open to all operators, and different operators have the same right to deploy LTE on the unlicensed frequency band. In order to allow different systems or different operators to compete fairly for the use of unlicensed frequency bands, a listen before talk (LBT) mechanism is introduced, that is, before each data transmission, a period of time is reserved to sense the carrier. Carry out the Clear Channel Assessment (CCA) process, and start data transmission only when the carrier is sensed to be available, and there is a maximum time lim...

Claims

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Application Information

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IPC IPC(8): H04W72/12H04W74/00
CPCH04W74/004H04W72/21H04W72/12
Inventor 柯颋童辉刘建军沈晓冬侯雪颖王锐
Owner CHINA MOBILE COMM GRP CO LTD
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