A method and device for interference control

Abstract

The present invention relates to the field of communication, and disclosed are a method and a device for controlling interference. The method comprises: a central node dividing transmission nodes into multiple clusters on the basis of the coupling path loss between the transmission nodes; then, determining, according to TDD uplink and downlink reference configuration and TDD uplink / downlink traffic of the transmission node, whether cross timeslot interference exists between the transmission nodes comprised in each cluster in a set subframe, and performing interference reduction adjustment on the transmission node comprised in the cluster in the set subframe having the cross timeslot interference, so as to not only effectively lower or avoid the cross timeslot interference between the transmission nodes in each subframe, but also maximize flexibility of a subframe configuration manner between the transmission nodes, thereby significantly improving the system performance.

Description

technical field [0001] The present invention relates to the field of communications, in particular to a method and device for interference control Background technique [0002] As one of the two basic duplex systems, the TDD (Time division duplex, time division duplex) system has received more and more attention under the background of increasing bandwidth requirements for broadband mobile communications. In a TDD system, uplink and downlink transmission use the same frequency resource, and uplink / downlink signals are transmitted on different time slots. In common TDD systems [eg, 3G TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system and 4G TD-LTE (TD-SCDMA-Long Term Evolution, Time Division Synchronous Code long-term evolution of multiple access)], the division of uplink and downlink time slots is static or semi-static, the usual practice is to determine the proportion of uplink and downlink time slots in the network planning process according to the...

AI Technical Summary

Problems solved by technology

[0022] Therefore, although there are schemes for dynamically allocating TDD uplink and downlink configurations in the prior art, the application obstacles of these schemes will cause serious cross-slot interference between adjacent cells, including the interference of adjacent cells of the same frequency , including adjacent cell interference of adjacent frequencies. If this type of interference problem cannot be resolved, not only will the advantages of the scheme of dynamically allocating TDD uplink and downlink configuration not be fully utilized, but the entire network will be paralyzed, resulting in a serious decline in system performance.

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