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Service transmission method, device and system in long term evolution time division duplex system

A technology of service transmission and time division duplexing, which is applied in the direction of using the return channel for error prevention/detection, wireless communication, electrical components, etc., and can solve the problems that the base station cannot receive correctly and the timing of HARQ is chaotic

Active Publication Date: 2018-02-23
CHINA MOBILE COMM GRP CO LTD
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Problems solved by technology

[0015] Embodiments of the present invention provide a service transmission method, device, and system in an LTE TDD system, which are used to solve the problem that the HARQ timing sequence is chaotic during the ambiguity period and the base station cannot receive data correctly in the downlink and uplink allocation proportion configuration scheme of the existing LTE TDD system. question

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  • Service transmission method, device and system in long term evolution time division duplex system
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  • Service transmission method, device and system in long term evolution time division duplex system

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Embodiment Construction

[0031] Embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0032] Aiming at the problem of HARQ timing disorder in the ambiguity period and the base station unable to receive data correctly in the downlink and uplink allocation proportion configuration scheme of the existing LTE TDD system, the embodiment of the present invention proposes a service transmission method and device in the LTE TDD system, using to solve this problem.

[0033] In the technical solution provided by the embodiment of the present invention, after the base station reconfigures the downlink and uplink allocation ratio in the LTE TDD system, within the fuzzy period, the base station uses the downlink and uplink allocation ratio before reconfiguration and the downlink and upli...

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Abstract

The invention discloses a service transmission method, device and system in a long-term evolution time-division duplex system, which are used to solve the problems of HARQ timing disorder in the fuzzy period and base stations unable to receive data correctly in the existing downlink and uplink allocation proportion configuration scheme . After the base station reconfigures the downlink and uplink allocation ratio in the LTE TDD system, within the fuzzy period, the base station uses the HARQ process with the same HARQ timing relationship between the downlink and uplink allocation ratio before reconfiguration and the downlink and uplink allocation ratio after reconfiguration. For downlink / uplink service transmission, after the fuzzy period ends, the base station performs downlink / uplink business transmission according to the reconfigured downlink and uplink allocation ratio. Even if the base station and UE have different understandings of the downlink and uplink allocation ratio during the fuzzy period, the base station and UE can Service transmission is performed correctly in the aforementioned HARQ processes having the same HARQ timing relationship.

Description

technical field [0001] The present invention relates to a Long Term Evolution (LTE, Long Term Evolution) Time Division Duplexing (TDD, Time Division Duplexing) system in a mobile communication system, in particular to a service transmission method, device and system in the LTE TDD system. Background technique [0002] Currently, there are 7 different uplink and downlink subframe allocation ratios in the LTE TDD system, as shown in Table 1. Among them, D represents a downlink subframe, U represents an uplink subframe, and S represents a transition point subframe. For example, subframe 0 with an allocation ratio of 0 is a downlink subframe, subframe 1 is a transition point subframe, and subframes 2 to 4 are uplink subframes. frame, subframe 5 is a downlink subframe, subframe 6 is a transition point subframe, and subframes 7 to 9 are uplink subframes. [0003] Table 1 [0004] [0005] According to the LTE specification, in a Hybrid Automatic Repeat Request (HARQ, Hybrid A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04L1/18
Inventor 王飞沈晓冬
Owner CHINA MOBILE COMM GRP CO LTD
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