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Feedback duration indication and determination methods, base station and UE (User Equipment)

A technology of a user equipment and a determination method, applied in the communication field, can solve problems such as increased signaling overhead, and achieve the effects of reducing signaling overhead and reducing communication load

Active Publication Date: 2019-02-05
SHENZHEN TRANSSION HLDG CO LTD
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  • Application Information

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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a feedback duration indication, a confirmation method, a base station, and a user equipment to solve the problem that the timing strategy of the uplink feedback under the 5G new air interface will increase the signaling overhead between the base station and the UE

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  • Feedback duration indication and determination methods, base station and UE (User Equipment)
  • Feedback duration indication and determination methods, base station and UE (User Equipment)
  • Feedback duration indication and determination methods, base station and UE (User Equipment)

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Embodiment approach

[0072] In S401, a number of pre-quantized processing capability levels are obtained, each processing capability level corresponds to a preset number of symbols, which is used to indicate that the UE with the corresponding processing capability level performs feedback under the requirements of the cell parameter set. The minimum number of symbols required.

[0073] The base station can quantify several processing capability levels locally in advance, for example, quantize the shortest processing time required by the UE for feedback into six shortest processing time levels {100us, 200us, 500us, 1ms, 2ms, 4ms}, and The subcarrier spacing in the parameter set determines the unit symbol length in the cell environment, and then the six shortest processing time levels are divided by the unit symbol length and rounded. If the subcarrier spacing in the cell parameter set is 30KHz, then the unit symbol length in the cell environment is 35.6us, and thus six processes {3, 6, 15, 29, 57, 1...

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Abstract

The embodiment of the invention discloses feedback duration indication and determination methods, a base station and UE (User Equipment). The feedback duration indication method comprises the steps of: acquiring a first symbol number, wherein the first symbol number is related to processing capacity of the UE and a cell parameter set; determining a second symbol number required by the UE for carrying out feedback on current dispatching; and sending a quantitative difference value between the first symbol number and the second symbol number to the UE. In the embodiment of the invention, the base station only needs to transfer the quantitative difference value between symbol lengths to the UE, and then the UE can determine a sub-frame of the UE, which is used for carrying out uplink feedback, at a terminal local of the UE according to the quantitative difference value, so that signaling cost between the base station and the UE is greatly reduced, thereby reducing a communication load generated in the uplink feedback process under a HARQ (Hybrid Automatic Repeat Request) mechanism.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a feedback duration indication, a confirmation method, a base station, and user equipment. Background technique [0002] Hybrid Automatic Repeat Request (HARQ) is a technology that combines forward error correction coding (Forward Error Correction, FEC) and automatic repeat request (Automatic Repeat Request, ARQ), which can efficiently The bit error caused by the link adaptation is compensated to improve the data transmission rate and reduce the data transmission delay. In the fifth-generation (5th-Generation, 5G) mobile communication technology, in order to meet the needs of different communication scenarios, its system supports variable subcarrier spacing and flexible frame structure configuration, and considers configurable HARQ timing methods. That is, different HARQ feedback durations are set according to different user equipment (User Equipment, UE) capabilit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18
CPCH04L1/1854
Inventor 朱广勇
Owner SHENZHEN TRANSSION HLDG CO LTD
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