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A communication method and device on unlicensed spectrum

A technology of unlicensed spectrum and time-frequency position, applied in the field of unlicensed spectrum communication, can solve problems such as difficult to adopt, enhance inter-cell interference elimination, interference, etc.

Active Publication Date: 2019-01-08
SHANGHAI LANGBO COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Compared with LTE communication on traditional licensed spectrum, LTE architecture on unlicensed spectrum faces greater interference problems: for the former, multiple cells working on the same frequency are deployed by the same operator, so coordinated Methods to mitigate the impact of interference, such as multi-point coordination (CoMP-Coordinate Multiple Points), enhanced inter-cell interference cancellation (eICIC-enhanced Inter-Cell Interference Cancellation) and other technologies; for the latter, multiple cells working on the same frequency May be deployed by different operators, it is difficult to adopt technologies like CoMP and eICIC

Method used

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  • A communication method and device on unlicensed spectrum
  • A communication method and device on unlicensed spectrum
  • A communication method and device on unlicensed spectrum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] Embodiment 1 illustrates a schematic diagram of exchanging cell coverage information between base stations, as shown in the attached figure 1 shown. attached figure 1 Among them, the base station N1 is a base station working on the first carrier, and the base station N2 is a base station near the base station N1.

[0106] for base station N1 , in step S11, sending a first measurement reference signal on a first carrier; in step S11, sending a first signaling on a first physical resource of the first carrier to indicate a first power value.

[0107] for base station N2 , in step S21, receive a group of measurement reference signals-the first measurement reference signal on the first carrier, and in step S22, receive a group of signaling on a group of physical resources (first physical resources) of the first carrier (First letter) Obtain a set of power values ​​(first power value) respectively.

[0108] In Embodiment 1, the first carrier is deployed in an unlicens...

Embodiment 2

[0116] Embodiment 2 illustrates a schematic diagram of a base station obtaining and sending cell coverage information, as shown in the attached figure 2 shown. attached figure 2 Among them, base station N4 is a base station working on the first carrier, base station N4 is a serving base station of UE U6, and base station N5 is a neighboring base station of base station N4.

[0117] for base station N4 , in step S41, send the first measurement reference signal on the first carrier; in step S42, receive the uplink signaling to obtain the RSRP for the first measurement reference signal; in step S43, in the first physical The first signaling is sent on the resource to indicate the first power value.

[0118] for Base station N5 , in step S51, receive a group of measurement reference signals - the first measurement reference signal on the first carrier, in step S52, receive a group of signaling on a group of physical resources (first physical resources) of the first carrier...

Embodiment 3

[0122] Embodiment 3 illustrates a schematic diagram of carrier selection, as shown in the attached image 3 shown. attached image 3 Among them, base station N7 and base station N8 are base stations working on the first carrier, and base station N9 is a neighboring base station of base station N7 and base station N8.

[0123] for base station N7 , in step S71, the measurement reference signal S is sent on the first carrier 1 ; In step S72, the physical resource R of the first carrier 1 send signaling C 1 Indicated power value P 1 .

[0124] for base station N8 , in step S81, the measurement reference signal S is sent on the first carrier 2 ; In step S82, the physical resource R of the first carrier 2 send signaling C 2 Indicated power value P 2 .

[0125] for base station N9 , in step S91, two groups of measurement reference signals S are received on the first carrier 1 and S 2 ; In step S92, receive 2 groups of signaling on 2 groups of physical resources of ...

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Abstract

The invention discloses a communication method and device on an unlicensed frequency spectrum. Aiming at the problem of inter-cell interference on the unlicensed frequency spectrum, the present invention provides a method for realizing inter-cell coordination by using an air interface signal. As an embodiment, the cell indicates the first power value by sending broadcast signaling on the unlicensed spectrum, the first power value is the RSRP for the measurement reference signal at the coverage edge of the cell, and the adjacent cells monitor the first power value Determine whether it can work on the unlicensed spectrum, and if it can work, further use the first power value to determine the transmission power and coverage of the unlicensed spectrum. The invention can ensure that the cell working on the unlicensed frequency spectrum is the cell with the best received signal quality of the served UE, and realizes a function similar to the cell selection in the traditional LTE network.

Description

technical field [0001] The present invention relates to a communication scheme using unlicensed spectrum in a wireless communication system, in particular to a communication scheme based on long-term evolution (LTE-Long Term Evolution) using unlicensed spectrum (Unlicensed Spectrum). Background technique [0002] In the traditional 3GPP–3rd Generation Partner Project (3GPP–3rd Generation Partner Project) LTE system, data transmission can only occur on the licensed spectrum. However, with the rapid increase of traffic, especially in some urban areas, the licensed spectrum may be difficult Meet the needs of business volume. The 62nd plenary meeting of 3GPP RAN discussed a new research topic, that is, the research on unlicensed spectrum synthesis (RP-132085), the main purpose of which is to study the non-standalone (Non-standalone) deployment of LTE on unlicensed spectrum, the so-called Non-independent means that the communication on the unlicensed spectrum must be associated ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/14H04W72/08H04L5/00H04W72/54
CPCH04L5/0053H04W16/14H04W72/542
Inventor 张晓博
Owner SHANGHAI LANGBO COMM TECH CO LTD