Heterogeneous Network Paging Interference Elimination
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Solution Overview
Problem
In LTE wireless communication systems, heterogeneous networks experience mutual paging interference between macro and low-power base stations due to shared frequency spectrum resources, with no prior solution available to effectively eliminate this interference.
Innovation Solution
A method and base station configuration where a first base station receives a paging parameter from a second base station, calculates a subframe for sending paging information, and sets a period to send and stop sending information on specific subframes and frames, using either the second base station's DRX period or the maximum actual paging periods of its users, to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If macro base station and low-power base station configure the same frequency spectrum resources to improve utilization efficiency, then frequency spectrum utilization is improved, but mutual paging interference occurs between the base stations
Solution Approach 1:
The patent applies periodic action by implementing discontinuous transmission of paging information. The first base station transmits paging information only during specific periods (set period) and remains silent during other periods (next set period), creating a periodic transmission pattern that alternates between transmission and silence to avoid interference with the second base station's paging transmissions
Solution Approach 2:
The patent segments the time domain by dividing the transmission schedule into distinct periods: a set period when the first base station transmits paging information and a next set period when it stops transmitting. This temporal segmentation allows both base stations to share frequency resources without simultaneous transmission interference
2Reliability
If the first base station continuously sends paging information to maintain paging performance, then paging performance is maintained, but paging interference to the second base station increases
Solution Approach 1:
The first base station implements periodic transmission by sending paging information only during the set period and remaining silent during the next set period, creating a rhythmic transmission pattern that maintains paging performance during active periods while avoiding interference during silent periods
Solution Approach 2:
The transmission pattern is dynamic rather than static, allowing the first base station to adapt its transmission behavior by switching between active transmission during the set period and silent operation during the next set period, optimizing the balance between paging performance and interference avoidance
Data Source
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AI summary
Embodiments of the present invention relate to the field of communication technologies, and in particular, disclose a method and a base station for eliminating paging interference in a heterogeneous network. The method for eliminating paging interference includes: receiving, by a first base station, a paging parameter nB sent by a second base station; calculating, by the first base station according to the paging parameter nB of the second base station, a subframe for the second base station to send paging information and a paging frame to which the subframe belongs; obtaining, by the first base station, a set period; sending, by the first base station, paging information on the subframe in the paging frame within the set period; and stopping, by the first base station, information on the subframe in the paging frame within a next set period. Embodiments of the present invention are capable of reducing paging interference in a heterogeneous network.