Apparatus and method for random access with multiple antennas in a wireless network

A technology for random access and random access to signals, applied in diversity/multi-antenna systems, antennas, wireless communications, etc., and can solve problems such as increasing network signaling overhead and delay

Active Publication Date: 2015-04-15
SAMSUNG ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the capital and operating costs required to acquire, install and maintain a large number of cells can be challenging since a 1000-fold increase in capacity would theoretically result

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  • Apparatus and method for random access with multiple antennas in a wireless network
  • Apparatus and method for random access with multiple antennas in a wireless network
  • Apparatus and method for random access with multiple antennas in a wireless network

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Embodiment Construction

[0028] discussed below Figures 1 to 14 Also, the various embodiments used to describe the principles of the disclosure in this patent document are by way of illustration only and should not be construed in any way as limiting the scope of the disclosure. Those skilled in the art will understand that the principles of the present disclosure may be implemented in any suitably arranged wireless communication system.

[0029] The following literature and standard descriptions are hereby incorporated into this disclosure as if fully set forth herein: Z. Pi and F. Khan, "An introduction to millimeter-wave mobile broadband systems (introduction to millimeter-wave mobile broadband systems), "IEEE Journal of Communications, June 2011 (REF 1), Z. Pi and F. Khan, "System design and network architecture for a millimeter-wave mobile broadband (MMB) system" System Design and Network Architecture), "Proc.Sarnoff Proceedings, 2011 (REF 2); and 3GPP TS36.221, "Evolved Universal Terrestr i a...

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Abstract

A base station enables a mobile station to employ a random access retransmission scheme in a wireless communication network. The mobile station includes a plurality of antennas configured to communicate with the base station. The mobile station also includes a processing circuitry coupled to the plurality of antennas. The processing circuitry is configured to perform a random access during a random access channel (RACH) burst. The processing circuitry also is configured to at least one of: transmit a random access signal with at least one of an initial transmit power level and an initial transmit beamwidth, and, in response to a random access attempt failure, change at least one of a transmit (Tx) power level and a Tx beamwidth and retransmit the random access signal.

Description

technical field [0001] The present application relates generally to wireless communications, and more particularly, to systems and methods for performing random access using multiple antennas. Background technique [0002] It is expected that the next generation of mobile broadband communication systems (5G) will need to deliver higher bandwidth than current 4G systems such as Long Term Evolution (LTE) and World Interoperability for Microwave Access (WIMA). i MAX)) 100-1000 times more capacity to meet the expected growth of mobile traffic. Existing approaches to increasing spectral efficiency are unlikely to meet the explosive demand for wireless data. Current 4G systems use various advanced technologies including Orthogonal Frequency Division Multiplexing (OFDM), Multiple Input Multiple Output (MIMO), Multiuser Diversity, Space Division Multiple Access (SDMA), Higher Order Modulation and Advanced Coding and Link Adaptation technology to virtually eliminate the discrepancy...

Claims

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Application Information

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IPC IPC(8): H04W74/08H04B7/04
CPCH01Q1/246H01Q1/242H04W74/08H04W52/42H04W74/0833H01Q3/36H04B7/0617H04L1/1829H04W52/36H04W88/08
Inventor 李英P.纽吉哈利R.斯特林-加拉彻皮周悦
Owner SAMSUNG ELECTRONICS CO LTD
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