A method and device for indicating uplink subframes on unlicensed spectrum

An unlicensed spectrum and location-indicating technology, applied in the field of communication, can solve the problems of low and inflexible transmission efficiency, and achieve the effect of improving transmission efficiency and dynamic and flexible frame structure.

Active Publication Date: 2019-03-22
YULONG COMPUTER TELECOMM SCI (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Based on this, in order to solve the technical problem of low transmission efficiency caused by the inflexible shortcoming of the TDD uplink and downlink configurations in the above-mentioned traditional technology with only 7 kinds of uplink and downlink configurations, a non-licensed Method for indicating uplink subframe on frequency spectrum

Method used

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  • A method and device for indicating uplink subframes on unlicensed spectrum
  • A method and device for indicating uplink subframes on unlicensed spectrum
  • A method and device for indicating uplink subframes on unlicensed spectrum

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Embodiment 1

[0090] In this embodiment, the indication signaling includes a bit sequence, that is, a DCI bit sequence, the number of bits in the bit sequence is the same as the number of subframes in the cycle duration, and the position of 0 / 1 in the bit sequence respectively corresponding to the relative timing positions of the uplink subframes in the indicated period.

[0091] For example, if the indication period is 10 ms, and the starting position is the same as that of the TDD frame. Then the DCI bit sequence is a 10-bit bit sequence. If 1 is used to indicate the uplink subframe, and 0 is used to indicate the downlink subframe and special subframe, then if subframe 3 and 8 in the pre-allocated next indication cycle are uplink subframes, The corresponding DCI bit sequence is: 0001000010, where the fourth bit of the sequence corresponds to subframe 3, and the ninth bit corresponds to subframe 8. The sequence order in the DCI bit sequence corresponds to the timing order of the subframes ...

Embodiment 2

[0094] In this embodiment, the indication signaling includes identification information corresponding to a preset uplink subframe allocation configuration, and the uplink subframe allocation configuration includes a timing position of an uplink and downlink subframe in a TDD frame.

[0095] That is to say, the frame structure of the TDD frame can be pre-extended from seven frame structures to multiple frame structures (only the timing order and / or allocation ratio of the uplink and downlink subframes are changed), and then the identification with fewer bits can be used The information numbers each frame structure, and notifies the terminal of the mapping relationship between the identifier and the frame structure in advance. Then in the indication signaling, it is only necessary to send the identification information of the configuration of the corresponding frame structure. After receiving the indication signaling, the terminal can find the frame structure corresponding to the...

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Abstract

The embodiment of the present invention discloses a method for indicating an uplink subframe on an unlicensed frequency spectrum, including: determining the current indication period and the next indication period according to a preset period length; acquiring a preset indication position in the current indication period, The indication position is the preset timing position of one or more downlink subframes; when the indication position in the current indication cycle arrives, the indication signaling is sent in the downlink subframe corresponding to the indication position, and the received The terminal of the downlink subframe acquires the timing position of the uplink subframe within the time range of the current indication period or the next indication period according to the indication signaling. The method for indicating uplink subframes on the unlicensed spectrum above extends the TDD frame structure, making the TDD frame structure more flexible, adaptable to more transmission environments, and improving transmission efficiency.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a method and device for indicating uplink subframes on unlicensed spectrum. Background technique [0002] With the rapid increase of communication traffic, the 3GPP authorized spectrum is increasingly insufficient to provide higher network capacity. In order to further improve the utilization of spectrum resources, unlicensed spectrum such as 2.4 GHz and 5 GHz frequency bands can be used in the prior art. These unlicensed spectrums are currently mainly used by WiFi, Bluetooth, radar, medical and other systems. In order to allow the LTE standard to be used in the unlicensed frequency band, 3GPP proposed the concept of LAA (LTE Assisted Access, LTE Assisted Access), using the unlicensed spectrum with the help of the LTE licensed spectrum. Unlicensed spectrum can work in two ways, one is Supplemental Downlink (SDL, Supplemental Downlink), that is, only downlink tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/16H04W28/26
CPCH04W28/16H04W28/26H04W74/006H04W72/0446H04W72/23H04W76/11H03M13/09H04L5/0044H04L5/005
Inventor 李明菊朱亚军张云飞
Owner YULONG COMPUTER TELECOMM SCI (SHENZHEN) CO LTD
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