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Communication method and device

A communication method and technology of a communication device, applied in the field of communication, can solve problems such as affecting the coverage relationship of sectors

Active Publication Date: 2019-09-03
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are more or less existing technologies for improving spectrum efficiency by increasing the number of antennas in a unit area, such as requiring additional site backhaul resources, affecting the coverage relationship between sectors, and requiring additional The pitfalls of standardization support

Method used

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  • Communication method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] In Embodiment 1, when the base station transmits the above-mentioned wide beam while also transmitting the narrow beam, the terminal is a user equipment (User Equipment, UE) such as a mobile phone as an example. In order to prevent the narrow beam from affecting the original The effect of the UE attachment process allows the base station to still use the wide beam and send CRS in the full frequency band on all subframes of the wide beam. For example, suppose the base station transmits three narrow beams while transmitting a wide beam, and the antenna used to transmit the wide beam has two ports, and the antenna used to transmit a single narrow beam also has two ports. Wide beam and narrow beam can be formed as image 3 Coverage shown. among them, image 3 For the meaning of the various lines in the figure 2 The explanation of the meaning of the various lines in the text will not be repeated here.

[0109] Based on image 3 Assuming conditions shown, the base station can ...

Embodiment 2

[0119] According to the communication method provided by the embodiment of the present invention, the base station will transmit a wide beam and at least two narrow beams at the same time. Therefore, before transmitting data for a specific UE and instructing the CSI-RS configuration index, the base station can first configure the index for the specific UE. The UE selects an appropriate service beam or beams.

[0120] Due to the reciprocity of the path loss, when selecting the serving beam for the UE, the selection can be made based on the uplink signal or the downlink signal. In Embodiment 2, it is assumed that the base station selects the beam for the UE to transmit data for the UE based on the signal strength value of the SRS received by the antenna that transmits the wide beam and the antenna that transmits each narrow beam.

[0121] In the LTE system, the UE can periodically send SRS according to the configuration of the base station, so that the base station can determine the ...

Embodiment 3

[0129] In practical applications, since the coverage of any narrow beam is completely within the coverage of the wide beam, if both the wide beam and the narrow beam are used for downlink data transmission on the same time-frequency resources, there will be Serious interference. Therefore, Embodiment 3 proposes a corresponding resource allocation mechanism to avoid strong interference between the two.

[0130] In Embodiment 3, a resource allocation mechanism is provided, which mainly includes:

[0131] 1. On the time-frequency resources occupied by the downlink data transmitted by the wide beam, the narrow beam does not transmit downlink data; while on the time-frequency resources occupied by the downlink data transmitted by the narrow beam, the wide beam does not transmit downlink data . That is, the time-frequency resources occupied by the downlink data respectively transmitted by the wide beam and the narrow beam are staggered.

[0132] 2. Time division multiplexing (TDM) or fr...

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Abstract

Embodiments of the present invention provide a communication method and a base station. The base station transmits a wide beam covering a sector of the base station, and a narrow beam whose coverage is completely within the coverage of the wide beam. On the premise that the coverage of the zone does not change, the narrow beam is further used to achieve enhanced coverage of the sector to improve spectrum efficiency. In this solution, since the coverage of the sector by the wide beam transmitted by the base station remains unchanged, the coverage relationship between the sectors will not be affected. Moreover, this solution does not require additional site backhaul resources, nor does it require additional standardization support.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular to a communication method and device. Background technique [0002] With the rapid development of the mobile Internet, the explosive growth of business volume continuously puts forward new demands on the mobile communication network, which makes various new technologies emerge in an endless stream. For example, Orthogonal Frequency Division Multipelexing (OFDM) technology, Multiple Input Multiple Output (MIMO) technology, relay technology, Carrier Aggregation (CA) technology, Cooperative Multipoint (Coordinated Multi-Point, CoMP) transmission technology, etc., they have in common in that they constantly pursue the improvement of the spectrum efficiency and capacity of the mobile communication network. [0003] From a theoretical analysis, the core of improving the spectrum efficiency of mobile communication networks is to improve the signal-to-interference-to-noise ratio. F...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/28H04B7/04
CPCH04W16/28H04W16/32H04W72/046H04B7/0408H04B7/0626H04B7/0413H04B7/0617
Inventor 彭炎周宏睿杨敬马霓赵建平
Owner HUAWEI TECH CO LTD