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Communication method and device

A communication method and technology of a communication device, applied in the field of communication, capable of solving problems affecting sector coverage relations, etc.

Active Publication Date: 2015-03-11
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 and also transmits the narrow beam at the same time, taking the terminal as an example of a user equipment (User Equipment, UE) such as a mobile phone, in order to avoid the narrow beam from affecting the original Influenced by the UE attachment process, the base station can still use the wide beam to send the CRS in the full frequency band on all subframes of the wide beam. For example, assuming that the base station transmits three narrow beams while transmitting one 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, then the base station transmits Wide and narrow beams can be formed as image 3 coverage shown. in, image 3 For the meaning of the various lines in figure 2 The explanation of the meaning of the various lines in , will not be repeated here.

[0109] based on image 3 Under the...

Embodiment 2

[0119] According to the communication method provided by the embodiment of the present invention, the base station transmits a wide beam and at least two narrow beams at the same time, therefore, before transmitting data and indicating a CSI-RS configuration index for a specific UE, it can first configure the index for the specific UE. The UE selects the appropriate serving 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 a beam for the UE to transmit data for the UE based on the SRS signal strength values ​​received by the antenna transmitting the wide beam and the antenna transmitting each narrow beam.

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

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 transmit downlink data on the same time-frequency resource, there will be a problem between the two. serious disturbance. 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; and 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 transmitted by the wide beam and the narrow beam respectively are staggered from each other.

[0132] 2. Time-divi...

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Abstract

Provided are a communication method and a base station. By way of transmitting, by the base station, a wide beam covering one sector of a base station and a narrow beam, of which the coverage range is completely within the coverage range of the wide beam, on the premise that the coverage range of the sector of the base station is enabled to remain unchanged using the wide beam enhanced coverage for the sector is further achieved by means of the narrow beam, thereby increasing the spectrum effectiveness. Because the coverage range of wide beams transmitted by a base station for the sectors still remains unchanged, the solution will not affect the coverage relationship between sectors. In addition, the solution does not need additional station locations to feed back a resource, and does not need additional standardization supports either.

Description

technical field [0001] The present invention relates to the technical field of communication, 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 constantly puts forward new demands on the mobile communication network, which leads to the emergence of various new technologies. For example, Orthogonal Frequency Division Multiplexing (OFDM) technology, multiple antenna multiple input multiple output (Multiple Input Multiple Output, MIMO) technology, relay technology, carrier aggregation (Carrier Aggregation, CA) technology, collaboration A common point of multi-point (Coordinated Multi-Point, CoMP) transmission technologies and the like is that they constantly seek to improve spectrum efficiency and capacity of mobile communication networks. [0003] Theoretically, the core of improving the spectral efficiency of the mobile communication network is to improv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/28H04B7/04H04W72/54
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