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Subframe scheduling method, system, network equipment and terminal

A multi-subframe scheduling and frame scheduling technology, applied in the field of wireless communication, can solve the problems of large control signaling overhead, poor scheduling flexibility, and affecting spectrum efficiency, so as to reduce control signaling overhead, improve scheduling flexibility, and save Effects on system resources

Inactive Publication Date: 2014-05-14
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, LTE uplink can also adopt the TTI bundling scheme, but multiple consecutive subframes transmit different redundant versions of the same data packet, which affects the overall spectral efficiency
[0006] In some scenarios, such as small cells (Small Cell) and multi-user, multi-packet services, the main factor restricting system capacity is the capacity of the control channel. If dynamic scheduling is used, each data packet of each user needs a DCI Correspondingly, it will inevitably require a lot of control signaling overhead and occupy a lot of precious resources. Even if ePDCCH (Enhanced Physical Downlink Control Channel, enhanced physical downlink control channel) is used, there is a problem of high control signaling overhead; if half Static scheduling, scheduling flexibility is poor

Method used

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  • Subframe scheduling method, system, network equipment and terminal
  • Subframe scheduling method, system, network equipment and terminal
  • Subframe scheduling method, system, network equipment and terminal

Examples

Experimental program
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Embodiment 1

[0136] This embodiment describes in detail the multi-subframe scheduling method provided by the present invention for downlink data transmission in an FDD (Frequency Division Duplexing, frequency division duplex) system.

[0137] The specific processing steps on the base station side are as follows: figure 1 shown, where:

[0138] Preferably, the base station indicates the use of multi-subframe scheduling instead of traditional single-subframe scheduling in one of the following four ways:

[0139] Way 1, distinguishing indications through the DCI format of the transmission mode. Two DCI formats are defined for the transmission mode, one for single-subframe scheduling and the other for multi-subframe scheduling. The base station indicates the use of multi-subframe scheduling by selecting the DCI format for multi-subframe scheduling;

[0140] In the second manner, the search space of the transmission mode is used to distinguish between single-frame scheduling and multi-subfram...

application example 1

[0166] This application example elaborates the newly defined transmission mode.

[0167] First, the system defines a new transmission mode, such as transmission mode X. This transmission mode can only be used for multi-subframe scheduling, or can be used for both multi-subframe scheduling and single-subframe scheduling. As for the mode that can be used for both single-subframe scheduling and multi-subframe scheduling, the base station can configure according to different situations to improve scheduling flexibility and system compatibility.

[0168] For the case where both single-subframe and multiple-subframe scheduling can be performed, the base station can distinguish between indicating single-subframe or multiple-subframe scheduling in the following manner.

[0169] Mode 1, distinguishing indications through the DCI format of the transmission mode. It is defined that transmission mode X includes two DCI formats, DCI format1A and DCI format1F. DCI format1A is the origina...

application example 2

[0181] This application example describes the situation of the scheduled subframe.

[0182] The multiple subframes to be scheduled can be a predefined number of fixed subframes, such as a fixed number of continuous or discrete subframes, consecutive subframes 1, 2, 3, 4 or 6, 7, 8, 9, or , consecutive subframes 1, 2, 3, or 4, 5, 6 or, 7, 8, 9. Or several discrete subframes, the discrete interval is fixed at 2, and the subframes are 2, 4, 6, 8 or 1, 3, 5, 7, etc.

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Abstract

The invention discloses a subframe scheduling method. The subframe scheduling method includes the following steps that: a transmission mode is configured for a network side, wherein the transmission mode at least comprises a multi-subframe scheduling transmission mode; and the network side selects a corresponding control information format according to the transmission mode to transmit downlink control information which is corresponding to the control information format, and thereafter, subframe scheduling is performed according to the downlink control information. The invention also discloses a subframe scheduling system, network equipment and a terminal correspondingly. With the subframe scheduling method, the subframe scheduling system, the network equipment and the terminal of the invention adopted, multi-subframe scheduling can be performed when user channel state information is relatively stable, and therefore, control signaling overhead can be decreased, and system resources can be saved, and scheduling flexibility can be improved.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a subframe scheduling method, system, network equipment, and terminal. Background technique [0002] In LTE / LTE-A (Long Term Evolution / Long Term Evolution Advance, long-term evolution / advanced long-term evolution), the terminal sends the DCI (Downlink Control Information, downlink control information) scheduling instruction, demodulate PDSCH (Physical Downlink Share Channel, physical downlink shared channel), send PUSCH (Physical Uplink Share Channel, physical uplink shared channel), complete the reception of downlink data and the transmission of uplink data. [0003] Multiple DCI formats are defined in the LTE / LTE-A system. For uplink scheduling, DCIFormat 0 and DCI Format4 can be used, and for downlink scheduling, DCI Format 1, DCI Format 1A, DCI Format1B, DCI Format1C, DCI Format1D, DCI Format2, DCI Format 2A, DCI Format 2B, DCI Format 2C, DCI Format 3, DCI Forma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/14H04L1/00H04L1/18
CPCH04L5/0053H04L27/0008H04W28/06H04W72/12H04L1/0001H04L1/1887H04L1/0038H04L1/1864H04W72/23H04L5/0055H04W74/004
Inventor 李新彩戴博夏树强石靖
Owner ZTE CORP
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