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UE scheduling method, device and base station

The technology of a scheduling device and a scheduling method, which is applied in the field of communication, can solve problems such as reducing system throughput, increasing system load, and resource waste, and achieves the effect of eliminating feedback ambiguity, small impact, and low cost

Active Publication Date: 2018-01-05
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a UE scheduling method, device, and base station to solve feedback ambiguity in the uplink feedback process in the prior art, resulting in multiple invalid downlink retransmissions of the base station, reducing system throughput and generating waste of resources and problems that increase system load

Method used

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  • UE scheduling method, device and base station
  • UE scheduling method, device and base station
  • UE scheduling method, device and base station

Examples

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Effect test

no. 1 example

[0048] The embodiment of the present invention discloses a UE scheduling method, combining figure 1 As shown, the method includes:

[0049] Step 101: When scheduling the current UE, the base station judges whether the hybrid automatic repeat request (HARQ) may cause feedback ambiguity if the current UE is scheduled on the current subframe.

[0050]In the TDD-LTE system, the number of uplink and downlink subframes is not necessarily symmetrical. In a configuration where there are more downlink subframes than uplink subframes, there may be a situation in which HARQ of multiple downlink subframes are reported simultaneously in one uplink subframe. The number of downlink subframes reported is equal to the length of the feedback window, which is jointly determined by the subframe configuration of the LTE system and the current scheduled subframe. In order to solve the HARQ feedback ambiguity that may occur when the base station schedules UEs, the base station first needs to deter...

no. 2 example

[0060] This embodiment discloses a UE scheduling method, combining figure 2 As shown, it includes: Step 201: when scheduling the current UE, the base station judges whether scheduling the current UE on the current subframe may cause hybrid automatic repeat request (HARQ) feedback ambiguity; Whether the scheduling times in the fixed window exceeds the threshold range; Step 203: If the scheduling times of the current UE in the current binding window exceeds the threshold range, then give up scheduling the current UE on the current subframe, determine the next UE to be scheduled, and send the next A UE to be scheduled is used as the currently scheduled UE, and returns to the first step.

[0061] Specifically, due to the analysis, in the multiplexing feedback mode of the TDD system, when the binding window length is 4, the number of combinations of the corresponding ACK / NACK resource index and 2-bit data in the standard is not enough, and the same 2-bit data appears There are mu...

no. 3 example

[0082] combine Figure 6 , Figure 7 As shown, this embodiment discloses an apparatus for scheduling a user equipment UE, including: a first judgment module 301 , a determination module 302 and an abandonment scheduling module 303 .

[0083] The first judging module 301 is configured to judge, when scheduling the current UE, whether the hybrid automatic repeat request (HARQ) may cause feedback ambiguity if the current UE is scheduled on the current subframe.

[0084] The determining module 302 is configured to, if yes, determine whether the number of scheduling times of the current UE within the current binding window exceeds a threshold range.

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Abstract

The invention provides an UE scheduling method and device, and a base station. The method comprises the following steps: judging whether an operation of scheduling the current UE on the current sub-frame possibly causes the existence of feedback ambiguity in a hybrid automatic repeat request HARQ when a base station schedules the current UE; if the operation of scheduling the current UE on the current sub-frame causes the existence of feedback ambiguity in the HARQ, determining whether the scheduling time of the current UE in the current binding window exceeds a threshold range; if the scheduling time of the current UE in the current binding window exceeds the threshold range, abandoning the operation of scheduling the current UE on the current sub-frame, and determining the next to-be-scheduled UE; taking the next to-be-scheduled UE as the current scheduled UE, and returning to the first step. The scheme provided by the invention can eliminate the feedback ambiguity of the ACK / NACK onthe HARQ, and avoids repeated downlink invalid retransmission of the base station.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to a UE scheduling method, device and base station. Background technique [0002] The downlink HARQ (Hybrid Automatic Repeat reQuest, hybrid automatic repeat request) of the LTE (Long Term Evolution, long-term evolution) system refers to the feedback of the UE (User Equipment, user equipment) on the downlink scheduling, and the feedback is divided into binding and multiplexing. model. In the bonding mode, the UE performs an AND operation on each flow of multiple subframes scheduled in the downlink, and in the multiplexing mode, the UE performs an AND operation on the multiple flows of each subframe scheduled in the downlink. Under the TDD (Time Division Duplexing, Time Division Duplexing) system, there are a total of 7 subframe ratios, and the uplink and downlink subframe ratios of each configuration are different, so there is a situation where one uplink subfr...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04W72/12
Inventor 刘庆生谢向文
Owner ZTE CORP