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Random access methods and devices in base station and UE

A random access and random number technology, applied in electrical components, wireless communication, network data management, etc., can solve problems such as waste of resources, blurred collisions, etc.

Active Publication Date: 2018-04-27
SHANGHAI LANGBO COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention 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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  • Random access methods and devices in base station and UE
  • Random access methods and devices in base station and UE
  • Random access methods and devices in base station and UE

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 invention discloses random access methods and devices in a base station and UE. The method comprises the steps of: sending a first wireless signal by the UE at first; then, receiving first signalling; and sending a second wireless signal, wherein the first wireless signal comprises X1 first sub-signals; the second wireless signal comprises X2 second sub-signals; the first sub-signals are generated by a characteristic sequence; the X2 second sub-signals respectively carry X2 pieces of first sub-information; the first sub-information comprises at least one selected from a group consisting ofan RRC connection request, tracking area updating, a scheduling request, the ID of the UE, a random number and a downlink antenna port set; the first signalling is used for determining X2 first sub-signals in the X1 first sub-signals; and time-frequency resources of the X2 second sub-signals are related to the antenna port set and the X2 first sub-signals. The method disclosed by the invention can support spatial multiplexing of uplink random access; furthermore, the fuzzy problem of random access can be avoided; and thus, the random access performance is improved.

Description

technical field [0001] The present invention 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 for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W74/08H04W74/00
CPCH04W74/085H04W74/002H04W8/02H04W74/00H04W74/08
Inventor 张晓博
Owner SHANGHAI LANGBO COMM TECH CO LTD
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