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Method and apparatus for repeatedly transmitting uplink channel in wireless communication system

A wireless communication system and link channel technology, applied in the field of repeatedly sending uplink channels, can solve problems such as resource shortage

Pending Publication Date: 2022-07-29
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mobile communication system has been extended to data services as well as voice services, and at present, the explosive growth of services has caused a shortage of resources, and users have demanded faster services, so more advanced mobile communication systems have been demanded

Method used

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  • Method and apparatus for repeatedly transmitting uplink channel in wireless communication system
  • Method and apparatus for repeatedly transmitting uplink channel in wireless communication system
  • Method and apparatus for repeatedly transmitting uplink channel in wireless communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment I

[0174] When the URLLC (Ultra Reliable Low Latency Communication) service is supported, with regard to the wireless channel state, in particular, ensuring reliability is an important issue. The requirements for the wireless portion of reliability define that the probability of sending a packet of y bytes in x milliseconds should typically be equal to or greater than z% (eg, x=1, y=100, z=99.999). The most difficult thing to meet this requirement is because the quality of the wireless channel itself is seriously degraded, and the capacity of the corresponding channel may not satisfy the condition in principle. In this context, the present disclosure attempts to solve this problem by obtaining cell / base station diversity. In other words, when a plurality of cells / base stations / RPs (reception points) receive the same data, although the radio channel for a specific cell / base station / RP is severely degraded, the terminal can transmit information to a cell with a relatively good chan...

example 1

[0202] Example 1: When transmitting N consecutive TUs, the terminal may apply independent timing per TU after muting the last symbol of the first TU ~ (N-1)th TU or the first symbol of the second TU ~ Nth TU advance value.

example 2

[0203] Example 2: Symbol muting can be performed only if the difference in timing advance values ​​satisfies the specific condition in Example 1. For example, muting may only be performed if the timing advance value of the subsequent TU is greater than the timing advance value of the previous TU.

[0204] This proposal is made because the uplink time synchronization for each TU may be different when the terminals are signaling to the base station at physically different distances.

[0205] A muting operation may be interpreted variously as transmission omission of a particular physical signal or channel or a puncturing operation or a rate matching operation on resource elements (REs) corresponding to corresponding symbols of a particular physical channel.

[0206] Figure 10 A method of applying timing advance in uplink repeated transmissions according to an embodiment of the present disclosure is illustrated.

[0207] exist Figure 10 , which is an embodiment in which the ...

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Abstract

A method and apparatus for repeatedly transmitting an uplink channel in a wireless communication system are disclosed. A method by which a terminal repeatedly transmits an uplink channel in a wireless communication system according to an embodiment of the present invention comprises: an uplink channel mapping step for mapping one uplink channel to a plurality of transmission opportunities (TOs) associated with a plurality of transmission units (TUs), the number of which is less than the plurality of TOs, wherein each of one or more specific TUs among the plurality of TUs includes two or more contiguous TOs; a step for mapping a spatial relationship reference signal (RS) to each of the plurality of TOs; and a step for transmitting one uplink channel to the base station at each of the plurality of TOs on the basis of the spatial relationship reference signals, wherein the spatial relationship reference signals mapped to two or more consecutive TOs included in the one or more specific TUs may be the same or different.

Description

technical field [0001] The present disclosure relates to wireless communication systems and, in more detail, to methods and apparatus for repeatedly transmitting uplink channels in wireless communication systems. Background technique [0002] Mobile communication systems have been developed to provide voice services while ensuring user mobility. However, mobile communication systems have been extended to data services as well as voice services, and currently, the explosive growth of traffic has resulted in shortage of resources, and users have demanded faster services, and thus more advanced mobile communication systems have been demanded. [0003] The overall requirements of the next generation mobile communication system should be able to support the accommodation of explosive data traffic, significantly increase the transmission rate per user, accommodate a significantly increased number of connected devices, very low end-to-end latency and high energy efficiency. To thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04L1/08H04W72/04H04W72/12
CPCH04L1/08Y02D30/70H04L5/0078H04L5/0044H04B7/04H04L1/1893H04L1/1861H04L1/1896H04L1/1819H04L1/1854H04L1/1671H04L1/0041H04L5/0048H04L5/0012H04L5/0094H04L5/0051H04L5/0023H04W72/0446H04W72/1268
Inventor 姜智源金亨泰
Owner LG ELECTRONICS INC
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