Method and device for random access in UE and base station

A random access and random number technology, applied in wireless communication, network data management, electrical components, etc., can solve problems such as collision ambiguity, resource waste, etc.

Active Publication Date: 2020-02-18
SHANGHAI LANGBO COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a solution to the problems of collision ambiguity and resource waste caused by beam sweeping in the random access process

Method used

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  • Method and device for random access in UE and base station
  • Method and device for random access in UE and base station
  • Method and device for random access in UE and base station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0157] Embodiment 1 illustrates the transmission flow chart of wireless signals, as attached figure 1 shown. in the attached figure 1 In , the base station N1 is the maintenance base station of the serving cell of the UE U2.

[0158] for base station N1 , monitor the first wireless signal in step S11, send the third wireless signal in step S12, send the first signaling in step S13, receive the second wireless signal in step S14, and send the fourth wireless signal in step S15 .

[0159] for UE U2 , send the first wireless signal in step S21, receive X3 third sub-signals in step S22, receive the first signaling in step S23, send the second wireless signal in step S24, receive X4 in step S25 The fourth sub-signal.

[0160] In Embodiment 1, the first wireless signal includes X1 first sub-signals, and the second wireless signal includes X2 second sub-signals. The X1 is an integer greater than or equal to the X2, and the X2 is a positive integer. The first sub-signal is g...

Embodiment 2

[0177] Embodiment 2 illustrates the schematic diagram of the first wireless signal, as shown in the attached image 3 shown. in the attached image 3 In , the horizontal axis represents time, the vertical axis represents frequency, and each rectangle filled with oblique lines represents the first sub-signal. In Embodiment 2, the first wireless signal includes X1 first sub-signals, where X1 is a positive integer, and the first sub-signals are generated by a characteristic sequence.

[0178] In sub-embodiment 1 of embodiment 2, the transmission channel corresponding to the first wireless signal is RACH (Random Access Channel, random access channel).

[0179] In sub-embodiment 2 of embodiment 2, the physical channel of the first wireless signal is PRACH (Physical Random Access Channel, Physical Random Access Channel).

[0180] In sub-embodiment 3 of embodiment 2, the characteristic sequence is a preamble.

[0181] In sub-embodiment 4 of embodiment 2, the characteristic sequen...

Embodiment 3

[0191] Embodiment 3 illustrates a schematic diagram of the relationship between the first wireless signal and the second wireless signal, as shown in the attached image 3 shown. in the attached image 3 , the horizontal axis represents time, each rectangle filled with diagonal lines represents the first sub-signal, each rectangle filled with cross-lines represents the second sub-signal, and the curve with arrows represents the connected first sub-signal and second sub-signal correlation between.

[0192] In Embodiment 3, the first wireless signal includes X1 first sub-signals, and the second wireless signal includes X2 second sub-signals. The X1 is an integer greater than or equal to the X2, and the X2 is a positive integer. The first signaling is used to determine X2 first sub-signals among the X1 first sub-signals, the configuration information of the X2 second sub-signals is respectively related to the X2 first sub-signals, and the The configuration information include...

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Abstract

The present invention discloses a method and an apparatus for user equipment (UE) and base station random access. A UE first sends a first wireless signal; receives first signaling; and sends a second wireless signal. The first wireless signal comprises X1 first sub-signals, and the second wireless signal comprises X2 second sub-signals. The first sub-signals are generated from a feature sequence, the X2 second sub-signals respectively carry X2 pieces of first sub-information, and the first sub-information comprises at least one of an RRC connection request, a tracking area update, a scheduling request, an ID of the UE, a random number, and a downlink antenna port group. The first signaling is used to determine the X2 first sub-signals in the X1 first sub-signals, time-frequency resources and antenna port groups of the X2 second sub-signals are correlated with the X2 first sub-signals. The method disclosed by the invention can support spatial multiplexing in uplink random accesses and can avoid the problem of ambiguities in random access and improve random access performance.

Description

technical field [0001] The present application relates to a transmission scheme in a wireless communication system, in particular to a random access method and device. Background technique [0002] The application scenarios of future wireless communication systems are becoming more and more diversified, and different application scenarios put forward different performance requirements for the system. In order to meet the different performance requirements of various application scenarios, the new air interface technology (NR, New Radio) for research. [0003] Massive MIMO has become a research hotspot in the next generation mobile communication system NR. In massive MIMO, multiple antennas use beamforming to form narrower beams pointing in a specific direction to improve communication quality. The beams formed by multi-antenna beamforming are generally narrow, and the two communicating parties need to obtain part of the channel information of the other party to make the f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W74/08H04W74/00
CPCH04W74/008H04W74/085H04W8/02H04W74/00H04W74/08
Inventor 张晓博
Owner SHANGHAI LANGBO COMM TECH CO LTD
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