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Uplink data transmission method and device

A data transmission method and data technology, applied in the field of communication, can solve the problems of reducing the quality of uplink transmission, not specifying the effective time standard of information, and reducing the efficiency of uplink transmission, etc.

Inactive Publication Date: 2018-05-18
HUAWEI TECH CO LTD
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Problems solved by technology

[0005] However, in the prior art, there is no provision for the effective time standards of the above-mentioned information
If the original rank value indicates single-stream transmission and the new rank value indicates dual-stream transmission, but the new rank value does not take effect, but the SG and auxiliary stream-related information takes effect first, the UE will still only use the indicated mainstream block length to uplink single-stream transmission, which will reduce the quality of uplink transmission; similarly, when the rank information takes effect, and the SG and auxiliary stream related information take effect later, if the rank information has indicated dual-stream transmission, since the auxiliary stream related information does not take effect at this time, the UE cannot obtain The latest auxiliary stream authorization, so the UE can only use the original auxiliary stream block length for uplink auxiliary stream transmission, which will also reduce the uplink transmission efficiency

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  • Uplink data transmission method and device

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Embodiment Construction

[0040] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0041] When the UE cache is limited, the amount of buffered data is small, or the UE power is limited, and the data cannot be sent according to the authorized data block length given by the maximum SG, the UE needs to adjust the actual amount of transmitted data by itself, or lower the transmit power. In this case, it may occur that the performance of sending data by the UE using the dual stream is not as good as that of sending data by using the single stream. At this time, the UE needs to re-judgment the number of ranks to be sent, and if it is judged that the single-stream transmission can obtain a higher throughput, the UE will automatically fall back to the single-stream for data transmission. At this time, the UE needs to determine the single-stream transmission SG information of the data. That is, the UE can in...

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Abstract

The present invention relates to an uplink data transmission method and device, the method comprising: receiving a Rank value from a base station; determining a transmitting mode for a user terminal according to the Rank value; and transmitting data to an uplink channel according to the determined transmitting mode. An embodiment of the present invention can prevent decreased uplink transmission efficiency due to the problem that the effectiveness of instructions is not synchronized.

Description

technical field [0001] The present invention relates to the communication field, in particular to an uplink data transmission method and device. Background technique [0002] Multiple Input Multiple Output (MIMO) technology is widely used in Long Term Evolution (Long Term Evolution, LTE) and Universal Mobile Telecommunications System (Universal Mobile Telecommunications System, UMTS). Its characteristic is that the data is transmitted synchronously through multiple antennas after multiple cuts. MIMO technology can not only increase the data transmission speed of the wireless network spectrum, without occupying additional spectrum resources, but also increase the signal receiving distance. [0003] In the UMTS system, the base station sets a target load ROT target to characterize the interference level, and measures the current real-time load, compares the current real-time load with the target load, determines the maximum power that the UE can transmit currently, and uses t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/18
CPCH04B7/0404H04B7/0486H04B7/063H04B7/0689
Inventor 赵悦莹邵家枫
Owner HUAWEI TECH CO LTD
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