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Coherent detection of large physical random access control channel (prach) delays

A detector and propagation delay technology, applied in transmission path sub-channel allocation, wireless communication, signaling allocation, etc., can solve problems such as undesired realization, reduce the risk of subsequent communication failure, reduce the risk of incorrect settings, The effect of improving performance

Active Publication Date: 2022-05-10
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

While this solution works well in LTE, in fifth-generation (5G) radio communication systems, large antenna arrays will be the cornerstone, with application-specific integrated circuits (ASICs) for each antenna branch The potential need for a particularly large DFT in , may be undesirable for an implementation
There are other potential issues, for example, related to the coexistence of different signal numbers

Method used

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  • Coherent detection of large physical random access control channel (prach) delays
  • Coherent detection of large physical random access control channel (prach) delays
  • Coherent detection of large physical random access control channel (prach) delays

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Embodiment Construction

[0048] References in the specification to "one embodiment," "an embodiment," and "example embodiment" indicate that the described embodiments may include a particular feature, structure, or characteristic, but that each embodiment may not necessarily include the particular feature, structure, or characteristic. structure, or property. Furthermore, such phrases are not necessarily referring to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is considered to be within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in combination with other embodiments (whether explicitly described or not). .

[0049] Herein, text in parentheses and boxes with dashed borders (eg, dashed dotted lines, dashed dashed lines, dotted dashed lines, and dots) may be used to illustrate optional operations that add additional features to embodiments of the inventi...

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Abstract

According to the embodiments described herein, the long delay detector improves the estimation performance of PRACH for many practical deployment scenarios. For example, this reduces the risk of the UE's timing advance being set incorrectly, thus reducing the risk of subsequent communications failing and the UE spreading unnecessary interference to other communications in the system.

Description

technical field [0001] The present disclosure relates to random access in a wireless communication system, and in particular, to a radio for transmitting and processing a preamble to calculate a propagation delay between a user equipment (UE) and a radio network node in a wireless communication system Network nodes, wireless devices and methods. Background technique [0002] In a typical radio communication system (e.g. a system based on Long Term Evolution (LTE)), the first transmission performed by a user equipment (UE) after it is switched on is to transmit a preamble on the Physical Random Access Control Channel (PRACH) code. The PRACH preamble is typically a synchronization sequence used to (i) inform the network that there is a new UE that wants to join the network, and (ii) allow the network to estimate the propagation delay between the UE and the network transmit and receive point (TRP). [0003] Estimation of the propagation delay in (ii) is possible because the U...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04W74/00
CPCH04L27/2662H04L27/2692H04L5/0053H04L27/2675H04L27/2665H04L27/2672H04J13/107H04L27/2607H04W56/0015H04W56/0045H04W56/0085H04L27/26132H04L27/26025H04W56/0055H04W72/044H04W74/0891
Inventor 约翰·艾克斯纳斯亨利克·萨林安德烈斯·雷亚那伽·维什努·康德·伊鲁库拉帕蒂
Owner TELEFON AB LM ERICSSON (PUBL)