Systems and methods for resolving a physical cell identity confusion in a heterogeneous network

Abstract

Embodiment of the present disclosure relates to resolving physical cell identity confusion in heterogenous networks. In one embodiment, a method is disclosed, comprising: receiving a handover requestincluding a first physical cell identity of a first target base station [120A]; comparing the first physical cell identity with a neighbor list comprising the first physical cell identity of the firsttarget base station [120A] and a second physical cell identity of a second target base station [120B]; transmitting an identifier of an access point [130A, 130B, 130C, 130D] to the first target basestation base stations [120A] and the second target base station [120B]; and analyzing response messages received from each of the first target base stations [120A] and the second target base station [120B] for performing a handover from a serving base station [102] to one of the first target base station [120A] and the second target base station [120B].

Description

technical field [0001] Embodiments of the present disclosure relate generally to communication systems. Embodiments of the present disclosure particularly relate to solving the problem of physical cell identity confusion in a heterogeneous network. Background technique [0002] Currently, in outbound cellular deployments, suitable powered macrocells have been deployed to cover larger areas. However, such deployment of macro cells does not seek to alleviate the rapid degradation of capacity as the number of user equipments (UEs) operating in the macro cell coverage area increases. As a result, cellular operators are now enhancing macro cell deployments and placing one or more low power small cells (known as femto / pico / micro cells) at multiple strategic locations within one or more macro coverage areas, which This arrangement of macro cells and small cells is called Heterogeneous Networks or HetNets. [0003] In a typical HetNest, the key locations of small cells usually in...

AI Technical Summary

Problems solved by technology

However, the proposed method requires overhead to maintain a headroom for handover identifiers such as Cell Radio Network Temporary Identifiers (C-RNTIs) to be allocated by the serving base station to handle PCI confusion scenarios

Furthermore, since all target base stations (i.e., first microcell and second microcell) are ready for handover in case PCI confusion occurs, there is an overhead of signaling to one or more target base stations that are not needed

[0016] Therefore, the prior art cannot solve the problems related to the PCI confusion that occurs in HetNet during the handover process in order to reuse the PCI space between various small cell clusters operating under the designated macrocell coverage area

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