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Data channel transmission method and device and data channel receiving method and device

A technology of data channel and transmission method, which is applied in the direction of digital transmission system, transmission system, and multiple use of transmission path, which can solve the problems of high resource overhead and high CP overhead of data channel.

Active Publication Date: 2019-10-29
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, taking the CP length of the data channel in Msg1 as an example of 3168 sampling intervals, when the data channel adopts 15KHz subcarrier spacing, the data part of each orthogonal frequency division multiple access (orthogonal frequency division multiplexing, OFDM) symbol corresponds to 2048 sampling interval, the CP overhead of the data channel in Msg1 is as high as 61%
And the CP overhead of general data is only 6.6%
For method 2, in order to avoid interference between multiple UEs, each UE can use different time-frequency resources for sending data channels in Msg1, which will cause large resource overhead

Method used

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  • Data channel transmission method and device and data channel receiving method and device
  • Data channel transmission method and device and data channel receiving method and device
  • Data channel transmission method and device and data channel receiving method and device

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Embodiment Construction

[0057] The term "and / or" in this application is only an association relationship to describe associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can mean that A exists alone, A and B exist at the same time, independently There are three cases of B. In addition, the character " / " in this application generally indicates that the related objects are an "or" relationship.

[0058] It should be noted that, in this application, words such as "exemplary" or "for example" are used to represent examples, illustrations or illustrations. Any embodiment or design described in this application as "exemplary" or "such as" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present the related concepts in a specific manner.

[0059] The network architecture and service scenarios described in the embodiments of the present ap...

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Abstract

The invention relates to the technical field of communication, in particular to a data channel transmission method and device, a data channel receiving method and device, which are used for reducing signaling overhead and improving a resource utilization rate, and the scheme comprises the following steps: determining a CP length corresponding to a data channel according to a cyclic prefix CP length corresponding to a random access preamble and a time length corresponding to a cyclic shift interval; transmitting the data channel. The scheme can be applied to a random access process.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular, to a data channel transmission method, a reception method, and an apparatus. Background technique [0002] In the wireless communication process, user equipment (UE) can establish a connection with a base station (BS) through a random access procedure (random access procedure) and obtain uplink synchronization, and then can send uplink data to the accessed BS. data. Currently, the UE can access the BS through a four-step random access procedure or a two-step random access procedure. The four-step random access process may be as follows: the UE sends a random access preamble (random access preamble) to the BS, also referred to as message one (message1, Msg1). After detecting the random access preamble, the BS sends a random access response, also called message two (Msg2), to the UE. The UE sends an uplink message through a data channel (for example, a physi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W74/08H04L5/00
CPCH04W74/0833H04L5/0048H04L5/00H04L27/2613H04L27/2607H04W28/06
Inventor 吴艺群柴晓萌陈雁
Owner HUAWEI TECH CO LTD
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