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A method for cross-carrier scheduling in carrier aggregation with different uplink and downlink ratios

A technology of cross-carrier scheduling and carrier aggregation, applied in the direction of data exchange network, digital transmission system, electrical components, etc., can solve problems such as inability to perform scheduling, inability to send authorization, etc.

Active Publication Date: 2014-10-22
POTEVIO INFORMATION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

like Figure 5 (b) As shown in (d), if the scheduling subframe corresponding to the scheduled subframe is an uplink subframe according to the timing relationship, since the scheduling subframe is an uplink subframe, the grant cannot be sent, so scheduling cannot be performed

Method used

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  • A method for cross-carrier scheduling in carrier aggregation with different uplink and downlink ratios
  • A method for cross-carrier scheduling in carrier aggregation with different uplink and downlink ratios
  • A method for cross-carrier scheduling in carrier aggregation with different uplink and downlink ratios

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Embodiment Construction

[0042] The present invention is applicable to full-duplex scenarios. For the seven uplink and downlink subframe ratios of configuration 0-configuration 6, because the mixed ratio has a great impact on the specification and the complexity of the design is high, the present invention will be based on the aggregated carrier Use the same switching point period assumption. Assume that different CCs are only configured with a combination of subframe ratios of 5 ms or 10 ms. At the same time, the CC carrying the scheduling grant is called the scheduling CC, and the CC on which the scheduling grant is transmitted on other CCs is called the scheduled CC.

[0043] When the uplink subframes of the scheduled CC are more than the uplink subframes of the scheduled CC, such as Image 6 shown. CC1 is the scheduling CC, and CC2 is the scheduled CC. Such as Image 6As shown, 601-604 are the timing relationship of CC1 sending the uplink grant of the uplink subframe. For the PUSCH grant of t...

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Abstract

The invention provides a cross carrier scheduling method in carrier aggregation with different uplink and downlink allocations. The cross carrier scheduling method comprises step A, determining whether an uplink subframe of a component carrier is more than that of a scheduled component carrier, if so, performing step B; step B, adding one bit to the downlink control information DCI of the scheduled component carrier to indicate whether the scheduled component carrier is cross subframe scheduling; step C, determining whether the uplink and the downlink of the scheduled component carrier are consistent with those of corresponding subframe of the component carrier, if so, performing step E, otherwise step D; step D, enabling an downlink subframe of the component carrier offset at certain time before the downlink so as to complete the scheduling; and step E, performing cross carrier scheduling to the scheduled component carrier according to timing relationship of the component carrier, but transmitting hybrid automatic repeat request physical indicator channel (PHICH) according to positions of the component carrier so that the scheduling is completed.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to carrier aggregation technology, in particular to a cross-carrier scheduling method in carrier aggregation with different uplink and downlink ratios. Background technique [0002] In Long Term Evolution Time Division Duplex Release 10 (LTE-A TDD Release 10), the concept of carrier aggregation is introduced to support wider bandwidth transmission, that is, two or more carriers are aggregated together to support LTE-A transmission bandwidth greater than 20MHz transmission. For the carrier aggregation TD of Release10, only the intra-band scenario is supported. This frequency band (band) is the available wireless resource spectrum resource determined by the International Telecommunication Union. If different uplink and downlink ratios are used, the uplink and Severe interference occurs during downlink transmission and reception, so the aggregated component carrie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/911H04W72/12
Inventor 鲁智陈哲池连刚
Owner POTEVIO INFORMATION TECH CO LTD
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