Uplink channel transmission method, UE and base station

A transmission method and channel transmission technology, applied in the field of communication, can solve the problem that the short TTI uplink channel cannot be guaranteed to be transmitted at the same time

Active Publication Date: 2020-06-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After realizing short TTI (such as: 0.5msTTI or shorter TTI), if the UE supports both long TTI (such as: 1ms TTI) and short TTI, the current technology can only ensure that the uplink channel corresponding to the long TTI is transmitted, and cannot guarantee the short TTI. The uplink channel corresponding to the TTI is sent at the same time. Therefore, it is urgent to provide a solution that enables the UE to send the uplink channel corresponding to the short TTI in the scenario where the UE supports both long TTI and short TTI.

Method used

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  • Uplink channel transmission method, UE and base station
  • Uplink channel transmission method, UE and base station
  • Uplink channel transmission method, UE and base station

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0159] An embodiment of the present invention provides a method for transmitting an uplink channel, and the execution subject is a UE, such as image 3 As shown, the method includes the following steps:

[0160] 101. The UE determines to use n first channels numbered i to send information and use m second channels numbered j to send information, where the number i The length of the first time unit is the first transmission time interval TTI, the length of the second time unit numbered j is the second TTI, the second TTI is shorter than the first TTI, and at least one of the numbers is The first time unit of i overlaps with at least one second time unit numbered j, and the information sent by the first channel and the second channel correspond to different cells.

[0161] It should be noted that the first channel on n first time units numbered i can be understood as that there is one first channel on each first time unit numbered i, which is equivalent to the existence of n O...

Embodiment 2

[0211] An embodiment of the present invention provides a method for transmitting an uplink channel, and the execution subject is a base station, such as Figure 4 As shown, the method includes the following steps:

[0212] 201. The base station sends the reserved power information of the first transmission time interval TTI and the reserved power information of the second TTI to the UE, so that the UE can compare the time between the first time unit numbered i and the second time unit numbered j When there is overlap, allocate transmit power for the L uplink channels according to the reserved power information of the first TTI and the reserved power information of the second TTI; or send the reserved power information of the second TTI to the UE, so that the When the first time unit numbered i and the second time unit numbered j overlap in time, the UE allocates transmit power for the L uplink channels according to the reserved power information of the second TTI , wherein th...

Embodiment 3

[0223] An embodiment of the present invention provides a method for transmitting an uplink channel, such as Figure 5 As shown, the method includes the following steps:

[0224] 301. The base station sends capability indication information to the UE.

[0225] Wherein, the capability indication information is used to instruct the UE to simultaneously transmit the channel corresponding to the long TTI and the channel corresponding to the short TTI.

[0226] In order to achieve shorter RTT and shorter data transmission delay, a scenario where the TTI length is set to 0.5 ms or shorter has been proposed. Then UE may use 0.5ms TTI to transmit short-latency services (such as small packets / voice) on a cell (cell), and at the same time use 1ms TTI to transmit large data volume services (such as video, download) on this cell. Therefore, the UE can simultaneously support a long TTI (eg: 1ms TTI) and a short TTI (eg: 0.5ms TTI), and the UE can simultaneously transmit the channel corres...

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Abstract

Provided are an uplink channel transmission method, a UE and a base station, which relate to the field of communications. Transmission power can be allocated to an uplink channel corresponding to a short TTI when the UE supports a long TTI and a short TTI at the same time. The method comprises the following steps: UE determines n first channels and m second channels; according to a maximum uplinktransmission time difference between the n first channels and the m second channels, allocating transmitting power L uplink channels at least comprising k second channels in the m second channels; sending the L uplink channels. The first channel is an uplink channel corresponding to a first cell on a first time unit with a number of i; the duration of the first time unit is a first TTI; the secondchannel is an uplink channel corresponding to a second cell on a second time unit numbered as j, the duration of the second time unit is a second TTI; and the second TTI is shorter than the first TTI.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method for transmitting an uplink channel, a UE (User Equipment, user equipment) and a base station. Background technique [0002] In the LTE (Long Term Evolution, Long Term Evolution) system, the process of UE sending uplink channel includes: UE receives the downlink scheduling signaling sent by the base station, then demodulates the downlink scheduling signaling, prepares uplink data, and then according to the obtained uplink channel The information (such as: required power, maximum allowable transmit power of the UE) allocates transmit power for the uplink channel, and then sends the uplink channel. [0003] Currently, the length of a subframe is 1 ms, and the length of a TTI (Transmission Time Interval, transmission time interval) is 1 ms. All scheduling is scheduled with TTI as the smallest scheduling unit. In order to achieve a shorter data transmission delay, a shorte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/14H04W52/28H04W52/32H04W52/34H04W52/36H04W72/04H04W72/12
CPCH04W52/34H04L5/0007H04W52/146H04W52/246H04W52/281H04W52/325H04W52/367H04W72/21H04W72/53H04W52/346H04W72/0446H04W72/1268
Inventor 邵家枫
Owner HUAWEI TECH CO LTD
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