Pilot frequency distribution method and device

A technology of pilot allocation and pilot sequence, applied in the field of communication, can solve the problem of low efficiency of pilot use, achieve the effect of increasing pilot frequency and reducing the number

Active Publication Date: 2018-12-25
CHINA UNITED NETWORK COMM GRP CO LTD
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Problems solved by technology

[0004] Embodiments of the present invention provide a pilot allocation method and device for solving the technical problem of low efficiency of pilot use in the prior art

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  • Pilot frequency distribution method and device

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Embodiment Construction

[0084] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application. The use of the terms "first" and "second" etc. does not denote any order, and the above terms may be interpreted as names of the described objects. In the embodiments of the present application, words such as "exemplary" or "for example" are used as examples, illustrations or illustrations. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present application shall not be interpreted as being more preferred or more advantageous...

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Abstract

The invention discloses a pilot frequency distribution method and a device, which relate to the technical field of communication and are used for solving the technical problem of low pilot frequency use efficiency in the prior art. The method comprises the following steps: according to the number of base stations, the number of users and the large-scale fading factor, the users are divided into afirst user group user with low interference intensity and a second user group user with high interference intensity; a plurality of user clusters are obtained by clustering analysis for a user of a second user group, and the user cluster is marked as a first user cluster if the user source cell indexes in each user cluster are all the same, otherwise, the user cluster is marked as a second user cluster; the pilot sequence of all cells is divided, a first pilot set is acquired to assign its pilot sequence to a first user group user, a second pilot set is acquired to assign its pilot sequence toa first user cluster user in the first user cluster, and a third pilot set is acquired to assign its pilot sequence to a second user cluster user in the second user cluster. The invention is used forimproving the use efficiency of the pilot frequency.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular, to a pilot allocation method and device. Background technique [0002] At present, in massive MIMO systems, due to the influence of pilot pollution, massive MIMO systems usually formulate pilot allocation strategies for users, and reduce the impact of pilot pollution by allocating appropriate pilot sequences to users in different cells. Influence, obtain more accurate channel state information, and then improve the overall performance of the system. [0003] In the prior art, the pilot allocation strategy divides the users of each cell into the high interference group users that cause higher interference to other users and the low interference group users that cause lower interference to other users according to the level of interference caused by users to other users. group users. The users in the low-interference group perform pilot frequency ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04W72/08
CPCH04L5/0048H04L5/0062H04W72/541
Inventor 韩潇王友祥冯毅高贺张天魁
Owner CHINA UNITED NETWORK COMM GRP CO LTD
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