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Method and system for sending downlink data feedback information

A technology for feedback information and downlink data, applied in the field of mobile communication, can solve the problems of data packet loss, waste of transmission resources, unreliable base station scheduling, etc., to reduce the probability of packet loss and save scheduling resources.

Active Publication Date: 2021-07-02
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the data sent by the user equipment is random, so obtaining the feedback information of the downlink data in this random way is very unreliable for the scheduling of the base station. It will waste transmission resources to retransmit correctly transmitted data, and the user equipment receives incorrectly received data, and the base station receives a feedback message of correct transmission, which will cause data packet loss and affect the scheduling performance of the network

Method used

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  • Method and system for sending downlink data feedback information
  • Method and system for sending downlink data feedback information
  • Method and system for sending downlink data feedback information

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Embodiment Construction

[0032] Embodiments of the present invention will be described in detail below, and examples of the embodiments are illustrated in the drawings, in which the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions. The following is exemplary, and is intended to be used herein, not to be construed as limiting the invention.

[0033] In the description of the present invention, the term "longitudinal", "horizontal", "upper", "lower", "front", "post", "left", "right", "vertical", "horizontal", " The orientation or position of the indicated by the top, "bottom", etc. is based on the orientation or positional relationship shown in the drawings, but is intended to facilitate the description of the present invention, and not to require the present invention, it must be constructed and operated in a specific orientation, so it cannot be understood as Restrictions on the invention.

[0034] These and other aspects of the emb...

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Abstract

The present invention provides a method and system for sending downlink data feedback information. The method includes: a base station determines a scheduling situation that may cause feedback ambiguity when the downlink data feedback information is transmitted through a PUCCH channel; if the current scheduling situation belongs to a situation that may cause feedback ambiguity In the case of scheduling, the base station judges whether the UE is at the moment of feeding back the downlink data feedback information, and whether it has an uplink data scheduling request; The UE performs uplink scheduling authorization. If there is no uplink data scheduling request, the base station assigns a virtual uplink data scheduling request to the UE, and then performs uplink scheduling authorization to the UE; the base station performs uplink data scheduling for the UE according to the uplink data scheduling request or virtual uplink data scheduling request. The scheduling grant authorizes the UE to transmit downlink data feedback information through the PUSCH channel. Through the above method, it can be ensured that the base station correctly obtains the feedback information of the downlink scheduling.

Description

Technical field [0001] The present invention relates to the field of mobile communication technologies, and more particularly to a method and system of a downlink data feedback information. Background technique [0002] At present, Long Term Evolution, LTE) communication system, after the base station transmits data to the user equipment (User Equipment, the UE), the user equipment needs to send the feedback information to the base station, the feedback message is the state of the base station transmission data. Indicates to facilitate the base station decision to continue to transmit new data (the data transmitted is correct) or retransmit the previously transmitted data (transmitted data errors). The user equipment sends a data feedback information to the base station, which can be passed through the PUCCH channel (Physical Uplinkshared Channel). [0003] In the prior art, the feedback message of the downlink data is transmitted on the PUCCH channel or the PUSCH channel. It is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04L1/16
CPCH04L1/1607H04W72/23
Inventor 许倩倩
Owner ZTE CORP
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