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Indirect Positioning for Automated Identification of Base Stations and Relays Disclosure Number: IPCOM000197760D
Publication Date: 2010-Jul-21
Document File: 3 page(s) / 889K

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Indirect Positioning for Automated Identification of Base Stations and Relays

Peter Szilagyi, Henning Sanneck

The integration of new network nodes in a network, e.g. base stations in current mobile radio networks, or the re-location of existing network nodes causes con- siderable manual configuration effort on site. Existing auto-configuration methods can help minimize this configuration effort by enabling to retrieve the con- figuration data for the new or re-located node from a preconfigured configuration planning database (containing a so-called network plan). Such an auto- configuration method may use e.g. the standard IETF protocol DHCP or similar protocols (IETF: Internet Engineering Task Force, DHCP: Dynamic Host Con- figuration Protocol).

The described background applies to regular base stations as well as to relays. Relays are mobile net- work base stations, which connect to the network via an in-band wireless backhaul link instead of using a dedicated wired or wireless (e.g., microwave) backhaul link. In-band relaying means that the same radio re- sources are used by relays and customer UEs (User Equipments). The purpose of using relays is to pro- vide coverage extension to high shadowing regions or locations where dedicated backhaul links are not deployed. Relays can also be used to enhance capacity.
For an RN (Relay Node) thus no dedicated fixed line or microwave backhaul link is required.

For deployment of relays, automation of initial config- uration (often called self-configuration) including au- tomated node identification is of crucial importance.
The reasons for it are: a) the expected large number of RNs, b) often physical relocations of RNs in order to address changing operator requirements, c) to save costs, and d) to avoid error-prone human intervention.

A precondition for such an auto-configuration is that a
mapping of the new network node to a planned node
in a network plan can be made, so that the correct set
of configuration parameters can be applied to the new
or re-located node. The mapping can be made by plan-
ning a designated physical network node at a partic-
ular location identified by a physical identifier in the
network plan. This method of identifying a network
node by a hardware dependent identifier has the dis-
advantage that it introduces administrative overhead for the network installation staff and operator: First, it is not possible to install any node of a particular type which is in stock at a particular location, and second, it is tedious to provide the detailed information, e.g. with respect to particular hardware, to provide a cer- tain network function.

Another point to keep in mind with respect to RNs is that there may be unplanned scenarios where the RN site is chosen ad-hoc. This is the case because RNs need to be deployed at specific locations (like cell edg- es) to fulfill their specific goal of coverage or capacity extension for the regular radio network. Howev...