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Uplink scheduling method, system and device in TDD system

A resource scheduling and resource technology, applied in network traffic/resource management, communication between multiple stations, electrical components, etc., can solve problems such as reducing system transmission performance, and achieve the effect of dynamic scheduling

Active Publication Date: 2009-04-01
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this solution leads to HARQ_RTT=15ms for UL Subframe 3 / 4, and the increase in the time interval between two adjacent transmissions reduces the transmission performance of the system

Method used

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  • Uplink scheduling method, system and device in TDD system
  • Uplink scheduling method, system and device in TDD system
  • Uplink scheduling method, system and device in TDD system

Examples

Experimental program
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Embodiment 1

[0040] In the first embodiment, it is assumed that the interval d corresponding to the UL Subframe P of adjacent Frames does not overlap in time, as shown in the formula [2]:

[0041] Ts+Tenb+Tue≥HARQ_RTT-Tframe [2]

[0042] Among them, Tframe is the length of a Frame.

[0043] Embodiment 1 corresponds to the case where the overlapping sub-interval is equal to 0. In this case, the system pre-configures the delivery time interval of the UL Grant as the maximum available interval d, and pre-configures the uplink sub-frame scheduling strategy, that is, the uplink sub-frame in the UL Grant The implicit correspondence between the frame index USI and the UL Subframe in the scheduled wireless frame Frame is: after the UL Grant for the UL Subframe P is processed by the UE, it always schedules the next nearest UL Subframe P, and at the same time, according to the existing LTE technology The corresponding relationship between the USI and the subframe number of the ULSubframe is also pr...

Embodiment 2

[0057] In the second embodiment, it is assumed that the interval d corresponding to the UL Subframe P of the adjacent Frame overlaps in time, as shown in the formula [3]:

[0058] Ts+Tenb+Tue

[0059]Embodiment 2 corresponds to the case where the overlapping sub-interval is greater than 0. In this case, since each wireless frame has two adjacent wireless frames, for a UL Subframe P in a specific wireless frame, its corresponding lower The maximum available interval d of the issued UL Grant is divided into three parts, including two overlapping sub-intervals at both ends and a non-overlapping sub-interval in the middle. The interval is the second coincident subinterval. Such as Figure 6 As shown, for the maximum available interval d corresponding to UL Subframe P in wireless frame Frame N+3, it is divided into three parts including: unavailable subinterval, located in the middle of d; and UL Subframe in Frame N+2 The first overlapping subinterval between...

Embodiment 3

[0073] Embodiment 3 also corresponds to the case where the overlapping sub-interval is greater than 0. For this case, the measure taken is that in each overlapping sub-interval, only the ULSubframe P of the Frame with a larger frame sequence number among the adjacent Frames sends the UL Grant. In this case, the system pre-configures the time interval for issuing the UL Grant as the remaining interval in the maximum available interval d except the second overlapping subinterval, that is, including the non-overlapping self-interval and the first overlapping subinterval. The system pre-configures the uplink subframe scheduling strategy, that is, the implicit correspondence between the uplink subframe index USI in the UL Grant and the UL Subframe in the scheduled wireless frame Frame is: After the UL Grant for UL Subframe P is processed by the UE, the UE Determine the sub-interval receiving the UL Grant, if it is received in a non-coincident sub-interval, then send the uplink data ...

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Abstract

An embodiment of the invention discloses an upward resource scheduling method of a TDD system, a system and a device, realizing dynamic scheduling on the upward resource on the basis of ensuring optimal transmission performance. The upward resource scheduling method comprises: a base station distributes upward resources for transmitting upward data on the user equipment, and transmits upward resource distribution information including upward sub-frame indexes in the sending time span corresponding to the upward sub-frame occupied by the upward resource, the sending time span corresponding to the upward sub-frame is arranged in advanced; the user equipment receives the distribution information, determines the upward sub-frame according to the upward sub-frame indexes and the upward sub-frame scheduling strategy, and transmits the upward data on the upward resource indicated by the distribution information in the upward sub-frame. An upward resource scheduling system comprises: user equipment and a base station. The embodiment of the invention also discloses a base station and user equipment.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to an uplink resource scheduling technology applied to a TDD system. Background technique [0002] The third generation mobile communication standardization organization (3rd Generation Partnership Project, 3GPP) has started the standardization work of the Long Term Evolution (LTE) technology. In the future LTE technology, a shared channel is used to provide services for multiple users, thereby Obtaining multi-user scheduling and multiplexing gain, improving spectrum utilization and system throughput has become the mainstream mode adopted in system design. [0003] In order to support multi-user sharing of channel resources, a dynamic scheduling method is used to allocate resources for transmitting data to UEs in real time. The following takes UE transmission of uplink data as an example, and gives the dynamic scheduling process of resources, such as figure 1 As shown...

Claims

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Application Information

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IPC IPC(8): H04W28/02H04B7/26
Inventor 李国庆谌丽高卓
Owner DATANG MOBILE COMM EQUIP CO LTD
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